Consultingwerk.OERA.DataAccess - SmartComponent Library

Namespace:

Consultingwerk.OERA

Class

DataAccess

Parent classes:

Progress.Lang.Object

Consultingwerk.OERA.DataAccess

Inherits:

Progress.Lang.Object

Implements:

Consultingwerk.OERA.IDataAccess, Consultingwerk.OERA.IDataAccessCanFind, Consultingwerk.OERA.IDataAccessCountRecords, Consultingwerk.OERA.Query.IDSQueryStringSource

Inherited by:

ABSTRACT

File:	DataAccess
Purpose:	Abstract base class for OERA Data Access objects
Author(s):	Mike Fechner / Consultingwerk Ltd.
Created:	Wed Feb 24 22:19:03 CET 2010
Notes:	SCL-1480: Now supports the SaveRowChanges custom log entry
	type to log details about "current row modified by another
	user" issues

Top Method Summary

Options	Name	Purpose
	ActivateDefaultRelations ()	Enables the given ProDataset relations. Disables all other parent-relations of the relation's child buffer */
	ActivateRelations (character)	Enables the given ProDataset relations. Disables all other parent-relations of the relation's child buffer
	AssignKeyFieldValues (handle)	Invoked by DataAccess:CommitChanges within the database transaction to optionally assign key field values for new records
	LOGICAL AttachDataSource (handle, handle, character)	Attaches a data-source object to a temp-table buffer in a ProDataSet object
	LOGICAL AttachDataSource (handle, handle, character, character)	Attaches a data-source object to a temp-table buffer in a ProDataSet object
	LOGICAL AttachDataSource (handle, handle, character, character, character)	Attaches a data-source object to a temp-table buffer in a ProDataSet object
	LOGICAL AttachDataSource (handle, IBufferDataSource)	Attaches a data-source object generated by an BufferDataSource instance to a temp-table buffer in a ProDataSet object
	LOGICAL AttachDataSource (handle, IBufferDataSource, character)	Attaches a data-source object generated by an BufferDataSource instance to a temp-table buffer in a ProDataSet object
	LOGICAL AttachDataSource (handle, IBufferDataSource, character, character)	Attaches a data-source object generated by an BufferDataSource instance to a temp-table buffer in a ProDataSet object
	LOGICAL AttachDataSource (handle, IBufferDataSource, character, character, character)	Attaches a data-source object generated by an BufferDataSource instance to a temp-table buffer in a ProDataSet object
A	AttachDataSources ()	Attaches the DATA-SOURCE objects to the ProDataset Buffers
	CHARACTER BuildDataSourceQueryString (handle, IFetchDataRequest, character)	Returns the Query String to be used for the DATA-SOURCE of a ProDataset member buffer
	CHARACTER BuildDataSourceQueryString (handle, IFetchDataRequest, IQueryExpressionWithSort)	Returns the Query String to be used for the DATA-SOURCE of a ProDataset member buffer
	CanFind (CanFindParameter)	Returns a TRUE value if a record is found that meets the specified FIND criteria; otherwise it returns FALSE. CAN-FIND does not make the record available to the Business Entity or it's caller.
	CheckForRecursiveRelationWithQuery ()	Checks if the ProDataset contains recursive relations and the top-level-buffer is using a query with the DATA-SOURCE
	CommitChanges (handle)	This method is called from SaveChanges in the DA to do the actual database commit and any transaction-related validation logic for a buffer.
	CountResultRecords (ICountRecordsRequest)	Counts the number of result records in the data source query
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character, character)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character, character, character)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character, character, character, character)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character, character, character, character, character)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character, character, character, character, character, character)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)	Creates a BufferDataSource
	Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)	Creates a BufferDataSource
	CustomizeFetchDataRequest (IFetchDataRequest)	Hook method to support customization the IFetchDataRequest or ICountRecordsRequest
	LOGICAL DatasetBufferFill (handle, IFetchDataRequest)	Invokes the FILL method of a ProDataset member buffer
	LOGICAL DatasetFill (handle, IFetchDataRequest)	Invokes the ProDataset FILL method
A	DefineReadEvents ()	TO-DO: Subscribe to ProDataset Event Handlers using SET-CALLBACK as needed
A	DetachDataSources ()	Detaches the DATA-SOURCE objects to the ProDataset Buffers
	EnableDataAccessQueryLogging ()	Enables DataAccessLogging
	CHARACTER ExpandTables (character)	Expands the FetchDataRequest:Tables parameter, in case it contains the * wild-card character
	FetchData (IFetchDataRequest)	Fetch data from the data source
	FetchDataByKeyTable (IFetchDataByKeyTableParameter)	Allows retrieve multiple DB records from a Business Entity based on a temp-table with key values
	FetchDataByStaticQuery (IFetchDataByStaticQueryRequest)	Fetches data for single table, using a static query
	FetchDataByTempTable (table-handle, IFetchDataByTempTableParameter)	Supports retrieve multiple DB records from a Business Entity based on a join to an (external) temp-table
	FetchDataEmptyDataset (IFetchDataRequest)	Empties the Dataset before the request
	FetchDataFill (IFetchDataRequest, character, handle)	Invokes FILL on the Dataset or the given Dataset Buffer
	FetchDataFillFindRowWhereBatch (IFetchDataRequest, handle, integer, character[])	Verify that a FindRowWhere on the server does always return a full batch of records
	FetchDataFillRepositionTables (IFetchDataRequest, character)	FILL's buffers with REPOSITION parent-relations
	FetchDataHandleErrorStatus ()	Handles ERROR-STATUS after the FetchData's FILL
	FetchDataInternal (IFetchDataRequest, logical)	Fetch data from the data source
	FetchDataLogNextRowid (handle)	Logs the NEXT-ROWID and LAST-BATCH property of the fill-buffer
	FetchDataLogRestartRowid (handle)	Logs the RESTART-ROWID of the fill-buffer
	FetchDataPrepareChildTableQuery (IFetchDataRequest, handle, integer, character)	Prepares the query for a child table
	FetchDataPrepareParentTableQuery (IFetchDataRequest, handle, integer, integer, character, IQueryRowIdentifier, character, FindRecordResult, handle)	Prepares the query for a parent table
	FetchDataRestoreBatchSizes (integer[])	Restores the Batch-Size of the ProDataset buffers
	FetchDataSetBatchContext (handle, character)	Updates the batch context with the next-rowids
	FetchDataSetFillMode (IFetchDataRequest, handle)	Sets the FILL-MODE for a Temp-Table Buffer in preparation for a FILL() method call
	FetchDataUpdateRequestContext (IFetchDataRequest, integer, character, IQueryRowIdentifier, character, FindRecordResult)	Updates the NextContext, PrevContext and BatchContext properties of the IFetchDataInstance
	ROWID FindRecord (character, handle, character, integer, integer)	Finds a record in the data source query and returns the ROWID ARRAY (used as RESTART-ROWID in FetchData)
	Consultingwerk.OERA.FindRecordResult FindRecord2 (character, handle, character, integer, integer)	Finds a record in the data source query and returns the ROWID ARRAY (used as RESTART-ROWID in FetchData)
	Consultingwerk.OERA.FindRecordResult FindRecord2 (character, handle, character, integer, integer, logical)	Finds a record in the data source query and returns the ROWID ARRAY (used as RESTART-ROWID in FetchData)
	Consultingwerk.OERA.FindRecordResult FindRecord2 (character, handle, IQueryExpressionWithSort, integer, integer, logical)	Finds a record in the data source query and returns the ROWID ARRAY (used as RESTART-ROWID in FetchData)
	FindSourceBuffer (handle, logical)	Locates the matching record in the first source buffer of the given Dataset Buffer
	CHARACTER GetDefinedBufferName (character)	Finds a matching buffer name in the current dataset, and returns the defined buffer name
	CHARACTER GetDefinedBufferName (integer)	Finds a matching buffer name in the current dataset, and returns the defined buffer name
	HandleKnownCommitErrors (SysError, character, handle)	Handles known commit errors and adds error messages to the before buffer Notes : Extracted from CommitChanges (SysError catch block) @param poSysErr The SysError thrown by SAVE-ROW-CHANGES @param pcReturnValue The RETURN-VALUE after SAVE-ROW-CHANGES @param phBeforeBuff The handle of the before buffer */
	HandleRecordLockedError (handle, SysError)	Handles a record locked error invoked during the SAVE-ROW-CHANGES method
	InitializeDataAccessQueryLogging ()	Initializes DataAccessLogging
	HANDLE InsertToDataSourceQuery (handle, IFetchDataRequest, character)	Creates a new Query to be used as a DATA-SOURCE for a ProDataset member buffer
	HANDLE InsertToDataSourceQuery (handle, IFetchDataRequest, IQueryExpressionWithSort)	Creates a new Query to be used as a DATA-SOURCE for a ProDataset member buffer
	InvokeCommitChangesCallback (CommitCallbackTypeEnum, handle)	Invokes a CommitChangesCallback
	LOGICAL IsQueryFlagPresent (character, character)	Returns if the passed in field (prefixed with the temp-table) is referenced in a list of query flag fields and is contained in the FetchDataRequest's QueryExpression
	LogCurrentRowModifiedIssue (handle)	Logs details about "current row has been modified by another user to the current logfile
	LogUnableToFindDbBufferIssue (handle, Error)	Logs details about "Unable to find record for db buffer "name" during SAVE-ROW-CHANGES" to the current logfile
	Consultingwerk.OERA.IDSQueryString NewDSQueryString (character, character)	Factory method for the DSQueryString objects
	Consultingwerk.OERA.IDSQueryString NewDSQueryString (character, character, logical)	Factory method for the DSQueryString objects
	Consultingwerk.OERA.IDSQueryString NewDSQueryString (IQueryExpressionWithSort, character, logical)	Factory method for the DSQueryString objects
	Consultingwerk.OERA.IDSQueryString NewDSQueryStringForKeyValueTable (character, character, logical, IFetchDataByKeyTableParameter, character)	Factory method for the DSQueryStringForKeyValueTable objects
	Consultingwerk.OERA.IDSQueryString NewDSQueryStringForTempTable (character, character, logical, IFetchDataByTempTableParameter)	Factory method for the DSQueryStringForTempTable objects
	Consultingwerk.IQueryRowIdentifier NewQueryRowIdentifier ()	Overridable factory method to create an instance of the IQueryRowIdentifier class
	OnAfterSaveChanges (EventArgs)	Raises the AfterSaveChanges
	OnAfterSavingRowChanges (SaveRowChangesEventArgs)	Raises the AfterSavingRowChanges event
	OnBeforeSaveChanges (EventArgs)	Raises the BeforeSaveChanges
	OnBeforeSavingRowChanges (SaveRowChangesEventArgs)	Raises the BeforeSavingRowChanges event
	OnHandleCommitError (HandleCommitErrorEventArgs)	Raises the HandleCommitError
	OnHandleCommitSysError (HandleCommitErrorEventArgs)	Raises the HandleCommitSysError
	CHARACTER ParentRelationSourceQueryString (handle)	Returns the query string matching the DATA-RELATION field pairs referencing the source fields on the parent table
	Consultingwerk.IQueryExpression ParseTopBufferRequestQuery (IFetchDataRequest)	Parses the Query of the top-buffer from the current request
	ProcessFetchDataRequestVariables (IFetchDataRequest)	Expands variables in the FetchDataRequest:Queries
	RepositionBackwards (handle, integer)	Reposition the given query backwards by the given number of records
	ROWID RepositionBackwards (handle, rowid[], integer)	Evaluates the ROWID from which the ProDataset FILL operation needs to start on a backwards fill operation
	SaveBuffer (handle)	Called from saveChanges to process changes for a single DataSet temp-table buffer.
	SaveChanges ()	Save changes to physical storage
	SaveRowChanges (handle)	Overridable method that executes SAVE-ROW-CHANGES on the before buffer
	SetDatasetBufferCallback (handle, character, character)	Sets's a ProDataset Buffer Callback-Method (BEFORE-FILL, AFTER-FILL, BEFORE-ROW-FILL, ...)
	SetDatasetBufferCallback (handle, character, character, Object)	Sets's a ProDataset Buffer Callback-Method (BEFORE-FILL, AFTER-FILL, BEFORE-ROW-FILL, ...)
	SetDatasetCallback (character, character)	Sets's a ProDataset Callback-Method (BEFORE-FILL, AFTER-FILL)
	SetDatasetCallback (character, character, Object)	Sets's a ProDataset Callback-Method (BEFORE-FILL, AFTER-FILL)
	Consultingwerk.IQueryRowIdentifier SkipRecords (integer, handle)	Returns the Query Row Identifier (ROWID) to be used when navigating that DATA-SOURCE query based on the Skip argument of the FetchDataRequest
	Consultingwerk.IQueryRowIdentifier SkipRecords (integer, handle, logical)	Returns the Query Row Identifier (ROWID) to be used when navigating that DATA-SOURCE query based on the Skip argument of the FetchDataRequest
A	CHARACTER SourceColumn (character, character)	Returns the database field name matching a temp-table field name contained in a consumers query string (query string vs. temp-table definition)
	CHARACTER SourceColumn2 (character, character)	Wrapper to the SourceColumn method - ensures that Data-Sources are attached
A	CHARACTER SourceDefaultQuery (character)	Returns the base query string used to retrieve data for the temp tables. This query string will be appended by the query provided by the consumer (FetchDataRequest object).
	SuggestDataSourceIndex (handle, character)	Method allows enforcing specific indexes when populating child record of a data-relation. When the parent buffer and the child buffer are FILL'ed during the ProDataset:FILL() operation, we ensure the given index
	VerifyRequestTables (character, IFetchDataRequest)	Verifies tables from the current FetchDataRequest

Top Constructor Summary

	Options	Name	Purpose
		DataAccess ()	Static Constructor of the DataAccess class
		DataAccess (handle)	Constructor of the DataAccess objects

Top Event Summary

	Options	Name	Purpose
		AfterSaveChanges (Object, EventArgs)	Raised at the end of SaveChanges - within the database transaction block
		AfterSavingRowChanges (Object, SaveRowChangesEventArgs)	Event raised after the execution of the SAVE-ROW-CHANGES method for an individual record in the DataAccessObject
		BeforeSaveChanges (Object, EventArgs)	Raised at the beginning of SaveChanges - within the database transaction block
		BeforeSavingRowChanges (Object, SaveRowChangesEventArgs)	Event raised before the execution of the SAVE-ROW-CHANGES method for an individual record in the DataAccessObject
		HandleCommitError (Object, HandleCommitErrorEventArgs)	Raised to allow custom handling of AppError's (Application errors, e.g. from DB triggers) raised while performing the SaveRowChanges method
		HandleCommitSysError (Object, HandleCommitErrorEventArgs)	Raised to allow custom handling of SysError's (Progress runtime errors) raised while performing the SaveRowChanges method

Top Property Summary

	Options	Name	Purpose
		Consultingwerk.Framework.Collections.CharacterDictionary AssignSkipDictionary
		CHARACTER AssignSkipList
		LOGICAL CheckDataTypeConversionForChildRelations
		CHARACTER CUSTOM_LOG_ENTRY
		HANDLE DatasetHandle
		LOGICAL DataSourcesAttached
		CHARACTER DefinedBufferNames
		CHARACTER FetchDataArgument
		Progress.Lang.Object FetchDataArguments
		Consultingwerk.OERA.IFetchDataRequest FetchDataRequest
		LOGICAL FilterUsingInnerJoin
		LOGICAL ForceApplyQueryOnChildTables
		LOGICAL IgnoreMissingDataSourceOnSaveChanges
		LOGICAL InFetchDataByKeyTable
		LOGICAL InFetchDataByTempTable
		LOGICAL LogFetchDataDetails
		LOGICAL PrepareJoinedChildTableQueries
		Consultingwerk.OERA.QueryPurposeEnum QueryPurpose
		Consultingwerk.OERA.Enum.RequestTypeEnum RequestType
		CHARACTER SourceBufferNames
		CHARACTER SourceTableNames
		LOGICAL ThrowErrorsOnFillFailed
		LOGICAL UseForwardOnlyQueries
		LOGICAL ValidateRestartRowid

Method Detail

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ActivateDefaultRelations ()

Purpose:	Enables the given ProDataset relations. Disables all other
	parent-relations of the relation's child buffer

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ActivateRelations (character)

Purpose:	Enables the given ProDataset relations. Disables all other
	parent-relations of the relation's child buffer
Notes:	Supports a comma-delimited list of relations

Parameters:
pcRelationNames	CHARACTER
	The name of the relation to enable

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AssignKeyFieldValues (handle)

Purpose:	Invoked by DataAccess:CommitChanges within the database transaction
	to optionally assign key field values for new records
Notes:	Provides a hook to assign key fields for new records before the
	changes (create) are written to the database. The default implementation
	of this method does nothing. Override this method to implement specific
	code

Parameters:
phBeforeBuffer	HANDLE
	The handle of the before buffer

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LOGICAL AttachDataSource (handle, handle, character)

Purpose:	Attaches a data-source object to a temp-table buffer in a ProDataSet
	object
Notes:	Filters out any white space character from the field lists to allow
	for human readable source code in the DataAccess classes
	AttachDataSources method

Parameters:
phDatasetBuffer	HANDLE
	The handle of the ProDataset Buffer
phDataSource	HANDLE
	The handle of the DATA-SOURCE object
pcPairsList	CHARACTER
	pairs-list An optional character expression that evaluates to a comma-delimited list of field name pairs that specify a mapping between different field names in the data-source object buffer and the ProDataSet temp-table buffer
Returns	LOGICAL
	Logical return value of the ATTACH-DATA-SOURCE method

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LOGICAL AttachDataSource (handle, handle, character, character)

Purpose:	Attaches a data-source object to a temp-table buffer in a ProDataSet
	object
Notes:	Filters out any white space character from the field lists to allow
	for human readable source code in the DataAccess classes
	AttachDataSources method

Parameters:
phDatasetBuffer	HANDLE
	The handle of the ProDataset Buffer
phDataSource	HANDLE
	The handle of the DATA-SOURCE object
pcPairsList	CHARACTER
	pairs-list An optional character expression that evaluates to a comma-delimited list of field name pairs that specify a mapping between different field names in the data-source object buffer and the ProDataSet temp-table buffer
pcExceptList	CHARACTER
	An optional character expression that evaluates to a comma-separated list of fields in the ProDataSet object buffer that will not be populated with data from the data source (that is, fields to exclude). Use this option when it is easier to specify fields to exclude rather than include. You can specify except-fields or include-fields, but not both
Returns	LOGICAL
	Logical return value of the ATTACH-DATA-SOURCE method

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LOGICAL AttachDataSource (handle, handle, character, character, character)

Purpose:	Attaches a data-source object to a temp-table buffer in a ProDataSet
	object
Notes:	Filters out any white space character from the field lists to allow
	for human readable source code in the DataAccess classes
	AttachDataSources method

Parameters:
phDatasetBuffer	HANDLE
	The handle of the ProDataset Buffer
phDataSource	HANDLE
	The handle of the DATA-SOURCE object
pcPairsList	CHARACTER
	pairs-list An optional character expression that evaluates to a comma-delimited list of field name pairs that specify a mapping between different field names in the data-source object buffer and the ProDataSet temp-table buffer
pcExceptList	CHARACTER
	An optional character expression that evaluates to a comma-separated list of fields in the ProDataSet object buffer that will not be populated with data from the data source (that is, fields to exclude). Use this option when it is easier to specify fields to exclude rather than include. You can specify except-fields or include-fields, but not both
pcIncludeFields	CHARACTER
	An optional character expression that evaluates to a comma-separated list of fields to include in the ProDataSet object buffer, as an alternative to specifying fields to exclude in except-fields. Use this option when it is easier to specify fields to include rather than exclude. You can specify include-fields or except-fields, but not both. If you specify include-fields, you must set except-fields to the Unknown value (?)
Returns	LOGICAL
	Logical return value of the ATTACH-DATA-SOURCE method

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LOGICAL AttachDataSource (handle, IBufferDataSource)

Purpose:	Attaches a data-source object generated by an BufferDataSource
	instance to a temp-table buffer in a ProDataSet object
Notes:	Filters out any white space character from the field lists to allow
	for human readable source code in the DataAccess classes
	AttachDataSources method

Parameters:
phDatasetBuffer	HANDLE
	The handle of the ProDataset Buffer
poDataSource	Consultingwerk.OERA.IBufferDataSource
	The reference to the the BufferDataSource instance that manages a data-source object handle
Returns	LOGICAL
	Logical return value of the ATTACH-DATA-SOURCE method

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LOGICAL AttachDataSource (handle, IBufferDataSource, character)

Purpose:	Attaches a data-source object generated by an BufferDataSource
	instance to a temp-table buffer in a ProDataSet object
Notes:	Filters out any white space character from the field lists to allow
	for human readable source code in the DataAccess classes
	AttachDataSources method

Parameters:
phDatasetBuffer	HANDLE
	The handle of the ProDataset Buffer
poDataSource	Consultingwerk.OERA.IBufferDataSource
	The reference to the the BufferDataSource instance that manages a data-source object handle
pcPairsList	CHARACTER
	pairs-list An optional character expression that evaluates to a comma-delimited list of field name pairs that specify a mapping between different field names in the data-source object buffer and the ProDataSet temp-table buffer
Returns	LOGICAL
	Logical return value of the ATTACH-DATA-SOURCE method

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LOGICAL AttachDataSource (handle, IBufferDataSource, character, character)

Purpose:	Attaches a data-source object generated by an BufferDataSource
	instance to a temp-table buffer in a ProDataSet object
Notes:	Filters out any white space character from the field lists to allow
	for human readable source code in the DataAccess classes
	AttachDataSources method

Parameters:
phDatasetBuffer	HANDLE
	The handle of the ProDataset Buffer
poDataSource	Consultingwerk.OERA.IBufferDataSource
	The reference to the the BufferDataSource instance that manages a data-source object handle
pcPairsList	CHARACTER
	pairs-list An optional character expression that evaluates to a comma-delimited list of field name pairs that specify a mapping between different field names in the data-source object buffer and the ProDataSet temp-table buffer
pcExceptList	CHARACTER
	An optional character expression that evaluates to a comma-separated list of fields in the ProDataSet object buffer that will not be populated with data from the data source
Returns	LOGICAL
	Logical return value of the ATTACH-DATA-SOURCE method

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LOGICAL AttachDataSource (handle, IBufferDataSource, character, character, character)

Purpose:	Attaches a data-source object generated by an BufferDataSource
	instance to a temp-table buffer in a ProDataSet object
Notes:	Filters out any white space character from the field lists to allow
	for human readable source code in the DataAccess classes
	AttachDataSources method

Parameters:
phDatasetBuffer	HANDLE
	The handle of the ProDataset Buffer
poDataSource	Consultingwerk.OERA.IBufferDataSource
	The reference to the the BufferDataSource instance that manages a data-source object handle
pcPairsList	CHARACTER
	pairs-list An optional character expression that evaluates to a comma-delimited list of field name pairs that specify a mapping between different field names in the data-source object buffer and the ProDataSet temp-table buffer
pcExceptList	CHARACTER
	An optional character expression that evaluates to a comma-separated list of fields in the ProDataSet object buffer that will not be populated with data from the data source
pcIncludeList	CHARACTER
	An optional character expression that evaluates to a comma-separated list of fields to include in the ProDataSet object buffer, as an alternative to specifying fields to exclude in except-fields.
Returns	LOGICAL
	Logical return value of the ATTACH-DATA-SOURCE method

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AttachDataSources ()

Purpose:	Attaches the DATA-SOURCE objects to the ProDataset Buffers
Notes:	ABSTRACT method in Consultingwerk.OERA.DataAccess, overridden in
	actual DataAccess objects
	Invoked in FetchData and SaveChanges

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CHARACTER BuildDataSourceQueryString (handle, IFetchDataRequest, character)

Purpose:	Returns the Query String to be used for the DATA-SOURCE of a ProDataset
	member buffer
Notes:	Wrapper to the access to the DSQueryString class to simplify overriding
	the query manipulation in a custom Data Access class or customer
	DataAccess base class override
	This method is used to provide the query string for non top-level buffers
	The returned Query String is based on the Query String that was provided
	(by the consumer) and the Source Default Query of the Data Access object

Parameters:
phBufferHandle	HANDLE
	The Handle of the ProDataset member buffer
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The FetchDataRequest object of the current request
pcQueryString	CHARACTER
	The query string provided by the consumer
Returns	CHARACTER
	The Query String to be used for the data source of the ProDataset member buffer

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CHARACTER BuildDataSourceQueryString (handle, IFetchDataRequest, IQueryExpressionWithSort)

Purpose:	Returns the Query String to be used for the DATA-SOURCE of a ProDataset
	member buffer
Notes:	Wrapper to the access to the DSQueryString class to simplify overriding
	the query manipulation in a custom Data Access class or customer
	DataAccess base class override
	This method is used to provide the query string for non top-level buffers
	The returned Query String is based on the Query String that was provided
	(by the consumer) and the Source Default Query of the Data Access object

Parameters:
phBufferHandle	HANDLE
	The Handle of the ProDataset member buffer
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The FetchDataRequest object of the current request
poQuery	Consultingwerk.IQueryExpressionWithSort
	The query expression provided by the consumer
Returns	CHARACTER
	The Query String to be used for the data source of the ProDataset member buffer

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CanFind (CanFindParameter)

Purpose:	Returns a TRUE value if a record is found that meets the specified
	FIND criteria; otherwise it returns FALSE. CAN-FIND does not make
	the record available to the Business Entity or it's caller.
Notes:	Result will be assigned to the Result property of the CanFindParameter
	instance

Parameters:
poParameter	Consultingwerk.OERA.CanFindParameter
	The CanFindParameter with the parameters for this call

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CheckForRecursiveRelationWithQuery ()

Purpose:	Checks if the ProDataset contains recursive relations and
	the top-level-buffer is using a query with the DATA-SOURCE
Notes:	SCL-3449 / SCLSUP-399

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CommitChanges (handle)

Purpose:	This method is called from SaveChanges in the DA
	to do the actual database commit and any transaction-related
	validation logic for a buffer.
Notes:	This is taken directly from the OERI.
	- Note that in this sample that illustrates support for distributed
	business logic the DA saves the whole dataset in SaveChanges, so
	this is not currently called from the BE.
	- The event names are the same as in the OERI. The word "Trans"
	is somewhat misleading as the DA need to support large transactions.
	One could consider using a name that indicates that this is a row
	event instead.

Parameters:
phBuffer	HANDLE
	The handle of the after buffer to commit

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CountResultRecords (ICountRecordsRequest)

Purpose:	Counts the number of result records in the data source query
Notes:

Parameters:
poFetchDataRequest	Consultingwerk.OERA.ICountRecordsRequest
	The ICountRecordsRequest that also implements IFetchDataRequest

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
pcTables	CHARACTER
	A database table name or comma delimited list of database table names
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
pcTable1	CHARACTER
	The first database table name
pcTable2	CHARACTER
	The second database table name
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
pcTable1	CHARACTER
	The first database table name
pcTable2	CHARACTER
	The second database table name
pcTable3	CHARACTER
	The third database table name
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
pcTable1	CHARACTER
	The first database table name
pcTable2	CHARACTER
	The second database table name
pcTable3	CHARACTER
	The third database table name
pcTable4	CHARACTER
	The fourth database table name
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
pcTable1	CHARACTER
	The first database table name
pcTable2	CHARACTER
	The second database table name
pcTable3	CHARACTER
	The third database table name
pcTable4	CHARACTER
	The fourth database table name
pcTable5	CHARACTER
	The fifth database table name
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character, character)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
pcTable1	CHARACTER
	The first database table name
pcTable2	CHARACTER
	The second database table name
pcTable3	CHARACTER
	The third database table name
pcTable4	CHARACTER
	The fourth database table name
pcTable5	CHARACTER
	The fifth database table name
pcTable6	CHARACTER
	The sixth database table name
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character, character, character)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
pcTable1	CHARACTER
	The first database table name
pcTable2	CHARACTER
	The second database table name
pcTable3	CHARACTER
	The third database table name
pcTable4	CHARACTER
	The fourth database table name
pcTable5	CHARACTER
	The fifth database table name
pcTable6	CHARACTER
	The sixth database table name
pcTable7	CHARACTER
	The seventh database table name
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character, character, character, character)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
pcTable1	CHARACTER
	The first database table name
pcTable2	CHARACTER
	The second database table name
pcTable3	CHARACTER
	The third database table name
pcTable4	CHARACTER
	The fourth database table name
pcTable5	CHARACTER
	The fifth database table name
pcTable6	CHARACTER
	The sixth database table name
pcTable7	CHARACTER
	The seventh database table name
pcTable8	CHARACTER
	The eighth database table name
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character, character, character, character, character)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
pcTable1	CHARACTER
	The first database table name
pcTable2	CHARACTER
	The second database table name
pcTable3	CHARACTER
	The third database table name
pcTable4	CHARACTER
	The fourth database table name
pcTable5	CHARACTER
	The fifth database table name
pcTable6	CHARACTER
	The sixth database table name
pcTable7	CHARACTER
	The seventh database table name
pcTable8	CHARACTER
	The eighth database table name
pcTable9	CHARACTER
	The ninth database table name
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (character, character, character, character, character, character, character, character, character, character)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
pcTable1	CHARACTER
	The first database table name
pcTable2	CHARACTER
	The second database table name
pcTable3	CHARACTER
	The third database table name
pcTable4	CHARACTER
	The fourth database table name
pcTable5	CHARACTER
	The fifth database table name
pcTable6	CHARACTER
	The sixth database table name
pcTable7	CHARACTER
	The seventh database table name
pcTable8	CHARACTER
	The eighth database table name
pcTable9	CHARACTER
	The ninth database table name
pcTable10	CHARACTER
	The tenth database table name
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
poBufferSpecs	Consultingwerk.OERA.IBufferSpec
	A buffer specification
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
poBufferSpec1	Consultingwerk.OERA.IBufferSpec
	The first buffer specification
poBufferSpec2	Consultingwerk.OERA.IBufferSpec
	The second buffer specification
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
poBufferSpec1	Consultingwerk.OERA.IBufferSpec
	The first buffer specification
poBufferSpec2	Consultingwerk.OERA.IBufferSpec
	The second buffer specification
poBufferSpec3	Consultingwerk.OERA.IBufferSpec
	The third buffer specification
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
poBufferSpec1	Consultingwerk.OERA.IBufferSpec
	The first buffer specification
poBufferSpec2	Consultingwerk.OERA.IBufferSpec
	The second buffer specification
poBufferSpec3	Consultingwerk.OERA.IBufferSpec
	The third buffer specification
poBufferSpec4	Consultingwerk.OERA.IBufferSpec
	The fourth buffer specification
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
poBufferSpec1	Consultingwerk.OERA.IBufferSpec
	The first buffer specification
poBufferSpec2	Consultingwerk.OERA.IBufferSpec
	The second buffer specification
poBufferSpec3	Consultingwerk.OERA.IBufferSpec
	The third buffer specification
poBufferSpec4	Consultingwerk.OERA.IBufferSpec
	The fourth buffer specification
poBufferSpec5	Consultingwerk.OERA.IBufferSpec
	The fifth buffer specification
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
poBufferSpec1	Consultingwerk.OERA.IBufferSpec
	The first buffer specification
poBufferSpec2	Consultingwerk.OERA.IBufferSpec
	The second buffer specification
poBufferSpec3	Consultingwerk.OERA.IBufferSpec
	The third buffer specification
poBufferSpec4	Consultingwerk.OERA.IBufferSpec
	The fourth buffer specification
poBufferSpec5	Consultingwerk.OERA.IBufferSpec
	The fifth buffer specification
poBufferSpec6	Consultingwerk.OERA.IBufferSpec
	The sixth buffer specification
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
poBufferSpec1	Consultingwerk.OERA.IBufferSpec
	The first buffer specification
poBufferSpec2	Consultingwerk.OERA.IBufferSpec
	The second buffer specification
poBufferSpec3	Consultingwerk.OERA.IBufferSpec
	The third buffer specification
poBufferSpec4	Consultingwerk.OERA.IBufferSpec
	The fourth buffer specification
poBufferSpec5	Consultingwerk.OERA.IBufferSpec
	The fifth buffer specification
poBufferSpec6	Consultingwerk.OERA.IBufferSpec
	The sixth buffer specification
poBufferSpec7	Consultingwerk.OERA.IBufferSpec
	The seventh buffer specification
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
poBufferSpec1	Consultingwerk.OERA.IBufferSpec
	The first buffer specification
poBufferSpec2	Consultingwerk.OERA.IBufferSpec
	The second buffer specification
poBufferSpec3	Consultingwerk.OERA.IBufferSpec
	The third buffer specification
poBufferSpec4	Consultingwerk.OERA.IBufferSpec
	The fourth buffer specification
poBufferSpec5	Consultingwerk.OERA.IBufferSpec
	The fifth buffer specification
poBufferSpec6	Consultingwerk.OERA.IBufferSpec
	The sixth buffer specification
poBufferSpec7	Consultingwerk.OERA.IBufferSpec
	The seventh buffer specification
poBufferSpec8	Consultingwerk.OERA.IBufferSpec
	The eighth buffer specification
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
poBufferSpec1	Consultingwerk.OERA.IBufferSpec
	The first buffer specification
poBufferSpec2	Consultingwerk.OERA.IBufferSpec
	The second buffer specification
poBufferSpec3	Consultingwerk.OERA.IBufferSpec
	The third buffer specification
poBufferSpec4	Consultingwerk.OERA.IBufferSpec
	The fourth buffer specification
poBufferSpec5	Consultingwerk.OERA.IBufferSpec
	The fifth buffer specification
poBufferSpec6	Consultingwerk.OERA.IBufferSpec
	The sixth buffer specification
poBufferSpec7	Consultingwerk.OERA.IBufferSpec
	The seventh buffer specification
poBufferSpec8	Consultingwerk.OERA.IBufferSpec
	The eighth buffer specification
poBufferSpec9	Consultingwerk.OERA.IBufferSpec
	The ninth buffer specification
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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Consultingwerk.OERA.IBufferDataSource CreateBufferDataSource (IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec, IBufferSpec)

Purpose:	Creates a BufferDataSource
Notes:

Parameters:
poBufferSpec1	Consultingwerk.OERA.IBufferSpec
	The first buffer specification
poBufferSpec2	Consultingwerk.OERA.IBufferSpec
	The second buffer specification
poBufferSpec3	Consultingwerk.OERA.IBufferSpec
	The third buffer specification
poBufferSpec4	Consultingwerk.OERA.IBufferSpec
	The fourth buffer specification
poBufferSpec5	Consultingwerk.OERA.IBufferSpec
	The fifth buffer specification
poBufferSpec6	Consultingwerk.OERA.IBufferSpec
	The sixth buffer specification
poBufferSpec7	Consultingwerk.OERA.IBufferSpec
	The seventh buffer specification
poBufferSpec8	Consultingwerk.OERA.IBufferSpec
	The eighth buffer specification
poBufferSpec9	Consultingwerk.OERA.IBufferSpec
	The ninth buffer specification
poBufferSpec10	Consultingwerk.OERA.IBufferSpec
	The tenth buffer specification
Returns	Consultingwerk.OERA.IBufferDataSource
	The new BufferDataSource instance

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CustomizeFetchDataRequest (IFetchDataRequest)

Purpose:	Hook method to support customization the IFetchDataRequest or ICountRecordsRequest
Notes:	Centralized location to customize queries for FetchData and CountResultRecords

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The IFetchDataRequest instance to customize

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LOGICAL DatasetBufferFill (handle, IFetchDataRequest)

Purpose:	Invokes the FILL method of a ProDataset member buffer
Notes:	Allows overriding this method in custom variants of the Data Access
	Errors thrown from or raised in the FILL call-back methods of the
	DataAccess class (SET-CALLBACK) will stop the Dataset from getting
	filled / filled further. However errors thrown from the call-back
	methods are not thrown from the FILL() method further up into a
	catch block or to the client.
	See http://knowledgebase.progress.com/articles/Article/P188375

Parameters:
phBuffer	HANDLE
	The handle of the proDataset
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The FetchDataRequest instance with the parameters for the current read
Returns	LOGICAL
	If the FILL is successful, this method returns TRUE. Otherwise, it returns FALSE.

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LOGICAL DatasetFill (handle, IFetchDataRequest)

Purpose:	Invokes the ProDataset FILL method
Notes:	Allows overriding this method in custom variants of the Data Access
	Errors thrown from or raised in the FILL call-back methods of the
	DataAccess class (SET-CALLBACK) will stop the Dataset from getting
	filled / filled further. However errors thrown from the call-back
	methods are not thrown from the FILL() method further up into a
	catch block or to the client.
	See http://knowledgebase.progress.com/articles/Article/P188375

Parameters:
phDataset	HANDLE
	The handle of the ProDataset
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The FetchDataRequest instance with the parameters for the current read
Returns	LOGICAL
	If the FILL is successful, this method returns TRUE. Otherwise, it returns FALSE.

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DefineReadEvents ()

Purpose:	TO-DO: Subscribe to ProDataset Event Handlers using SET-CALLBACK
	as needed
Notes:	ABSTRACT method in Consultingwerk.OERA.DataAccess, overridden in
	actual DataAccess objects
	Invoked in FetchData

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DetachDataSources ()

Purpose:	Detaches the DATA-SOURCE objects to the ProDataset Buffers
Notes:	ABSTRACT method in Consultingwerk.OERA.DataAccess, overridden in
	actual DataAccess objects
	Invoked in FetchData and SaveChanges

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EnableDataAccessQueryLogging ()

Purpose:	Enables DataAccessLogging
Notes:

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CHARACTER ExpandTables (character)

Purpose:	Expands the FetchDataRequest:Tables parameter, in case it contains
	the * wild-card character
Notes:

Parameters:
pcTables	CHARACTER
	The initial Tables parameter
Returns	CHARACTER
	The tables parameter with the wild-cards expanded

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FetchData (IFetchDataRequest)

Purpose:	Fetch data from the data source
Notes:	poFetchDataRequest:Context property is used to control batching
	(forward/backwards) and the FindRowWhere/PreFetchOnFind
	The first entry by CHR(1) in the Context is CHR(2) delimited:
	1. Entry: RESTART-ROWID(s) - CHR(5) Delimited
	2. Entry: Find String
	3. Entry: PrefetchOnFind Value
	The poFetchDataRequest parameter may also be passed in as a
	IFetchDataAccessRequest instance allowing further specific arguments
	to be passed that are only relevant to the DataAccess class

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The IFetchDataRequest object with the parameters for this call

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FetchDataByKeyTable (IFetchDataByKeyTableParameter)

Purpose:	Allows retrieve multiple DB records from a Business Entity based on
	a temp-table with key values
Notes:

Parameters:
poParameter	Consultingwerk.OERA.IFetchDataByKeyTableParameter
	The IFetchDataByKeyTableParameter with the data for this call

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FetchDataByStaticQuery (IFetchDataByStaticQueryRequest)

Purpose:	Fetches data for single table, using a static query
Notes:	This method always throws an exception, since only the concrete DataAccess classes know
	which Fetch* method uses which parameter type

Parameters:
poParameter	Consultingwerk.OERA.IFetchDataByStaticQueryRequest
	The query parameter object

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FetchDataByTempTable (table-handle, IFetchDataByTempTableParameter)

Purpose:	Supports retrieve multiple DB records from a Business Entity based on
	a join to an (external) temp-table
Notes:

Parameters:
phTable	TABLE-HANDLE
	The handle of the temp-table with which to perform a join while fetching data
poParameter	Consultingwerk.OERA.IFetchDataByTempTableParameter
	The IFetchDataByTempTableParameter with the data for this call

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FetchDataEmptyDataset (IFetchDataRequest)

Purpose:	Empties the Dataset before the request
Notes:	Optionally support for IFetchDataAccessRequest:AppendFetchData (SCL-1048)

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The IFetchDataRequest instance

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FetchDataFill (IFetchDataRequest, character, handle)

Purpose:	Invokes FILL on the Dataset or the given Dataset Buffer
Notes:

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The reference to the FetchDataRequest instance
pcTables	CHARACTER
	The request tables
phFillBuffer	HANDLE
	The (first) buffer to fill

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FetchDataFillFindRowWhereBatch (IFetchDataRequest, handle, integer, character[])

Purpose:	Verify that a FindRowWhere on the server does always return
	a full batch of records
Notes:

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The reference to the current IFetchDataRequest instance
phBuffer	HANDLE
	The handle of the fill-buffer
piBatchSize	INTEGER
	The batch-size
pcFillWhereStrings	CHARACTER
	The array of fill-where-strings

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FetchDataFillRepositionTables (IFetchDataRequest, character)

Purpose:	FILL's buffers with REPOSITION parent-relations
Notes:

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The reference to the current IFetchDataRequest instance
pcTables	CHARACTER
	The list of tables to populate

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FetchDataHandleErrorStatus ()

Purpose:	Handles ERROR-STATUS after the FetchData's FILL
Notes:

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FetchDataInternal (IFetchDataRequest, logical)

Purpose:	Fetch data from the data source
Notes:	Internal version of the method. The attaching and de-attaching of
	the DataSources is no done in FetchData. The possible recursive call
	to fetch a complete LAST batch after FindRowWhere is calling into
	the method FetchDataInternal do not interfere with the attaching of
	the data-source's. SCL-621: This structure allows us to always detach
	the data-sources when they should still be around (left over due to
	missing FINALLY-Block execution after STOP-Condition

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The IFetchDataRequest object with the parameters for this call
plUseForwardOnlyQueries	LOGICAL
	Indicates whether the data-source queries should have FORWARD-ONLY = TRUE

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FetchDataLogNextRowid (handle)

Purpose:	Logs the NEXT-ROWID and LAST-BATCH property of the fill-buffer
Notes:

Parameters:
phFillBuffer	HANDLE
	The handle of the fill-buffer

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FetchDataLogRestartRowid (handle)

Purpose:	Logs the RESTART-ROWID of the fill-buffer
Notes:

Parameters:
phFillBuffer	HANDLE
	The handle of the fill-buffer

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FetchDataPrepareChildTableQuery (IFetchDataRequest, handle, integer, character)

Purpose:	Prepares the query for a child table
Notes:

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The IFetchDataRequest instance
phBuffer	HANDLE
	The buffer to prepare the Data Source query for
piTable	INTEGER
	The counter of the current table in the request
pcQueries	CHARACTER
	The list of query strings for all request tables

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FetchDataPrepareParentTableQuery (IFetchDataRequest, handle, integer, integer, character, IQueryRowIdentifier, character, FindRecordResult, handle)

Purpose:	Prepares the query for a parent table
Notes:

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The IFetchDataRequest instance
phBuffer	HANDLE
	The buffer to prepare the Data Source query for
piTable	INTEGER
	The counter of the current table in the request
piBatchSize	INTEGER
	The request's Batch Size
pcQueries	CHARACTER
	The list of query strings for all request tables
proRestartRowids	Consultingwerk.IQueryRowIdentifier
	INPUT-OUTPUT The reference to the IQueryRowIdentifier instance
pcFindString	CHARACTER
	OUTPUT The FIND String to return to the caller
poFindRecordResult	Consultingwerk.OERA.FindRecordResult
	OUTPUT The FindRecordResult to return to the caller
phQuery	HANDLE
	The handle of the data-source query

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FetchDataRestoreBatchSizes (integer[])

Purpose:	Restores the Batch-Size of the ProDataset buffers
Notes:

Parameters:
piBatchSizes	INTEGER
	The array with the ProDataset buffer's Batch-Sizes

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FetchDataSetBatchContext (handle, character)

Purpose:	Updates the batch context with the next-rowids
Notes:

Parameters:
phBuffer	HANDLE
	The handle of the first request buffer
pcContext	CHARACTER
	The batch context to update

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FetchDataSetFillMode (IFetchDataRequest, handle)

Purpose:	Sets the FILL-MODE for a Temp-Table Buffer in preparation for
	a FILL() method call
Notes:

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The reference to the IFetchDataRequest instance
phBuffer	HANDLE
	The handle of the current buffer

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FetchDataUpdateRequestContext (IFetchDataRequest, integer, character, IQueryRowIdentifier, character, FindRecordResult)

Purpose:	Updates the NextContext, PrevContext and BatchContext properties
	of the IFetchDataInstance
Notes:

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The reference to the IFetchDataRequest instance
piBatchSize	INTEGER
	The batch size
pcContext	CHARACTER
	The batch-context
proRestartRowids	Consultingwerk.IQueryRowIdentifier
	The restart-rowids
pcFindString	CHARACTER
	The FIND String
poFindRecordResult	Consultingwerk.OERA.FindRecordResult
	The result of the FIND operation

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ROWID FindRecord (character, handle, character, integer, integer)

Purpose:	Finds a record in the data source query and returns the ROWID ARRAY
	(used as RESTART-ROWID in FetchData)
Notes:	This method is kept for backwards compatibility as the FindRecord2
	method is now the actual working method

Parameters:
pcFindString	CHARACTER
	WHERE eCustomer.CustNum = 10
phBufferHandle	HANDLE
	The temp-table buffer handle
pcQueryString	CHARACTER
	The current data-source query string
piPrefetch	INTEGER
	The number of records to prefetch
piBatchSize	INTEGER
	The number of records to return to the client (total incl. prefetch)
Returns	ROWID
	The ROWID array of the records - that starts the resulting batch

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Consultingwerk.OERA.FindRecordResult FindRecord2 (character, handle, character, integer, integer)

Purpose:	Finds a record in the data source query and returns the ROWID ARRAY
	(used as RESTART-ROWID in FetchData)
Notes:	Defaults to THROW error on not found

Parameters:
pcFindString	CHARACTER
	WHERE eCustomer.CustNum = 10
phBufferHandle	HANDLE
	The temp-table buffer handle
pcQueryString	CHARACTER
	The current data-source query string
piPrefetch	INTEGER
	The number of records to prefetch
piBatchSize	INTEGER
	The number of records to return to the client (total incl. prefetch)
Returns	Consultingwerk.OERA.FindRecordResult
	The FindRecordResult with the array of rowids and the information if a previous batch is available

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Consultingwerk.OERA.FindRecordResult FindRecord2 (character, handle, character, integer, integer, logical)

Purpose:	Finds a record in the data source query and returns the ROWID ARRAY
	(used as RESTART-ROWID in FetchData)
Notes:

Parameters:
pcFindString	CHARACTER
	WHERE eCustomer.CustNum = 10
phBufferHandle	HANDLE
	The temp-table buffer handle
pcQueryString	CHARACTER
	The current data-source query string
piPrefetch	INTEGER
	The number of records to prefetch
piBatchSize	INTEGER
	The number of records to return to the client (total incl. prefetch)
plThrowOnNotFound	LOGICAL
	Logical value indicating if an error should be thrown when the record cannot be found
Returns	Consultingwerk.OERA.FindRecordResult
	The FindRecordResult with the array of rowids and the information if a previous batch is available, returns ? when no record was found and plThrowOnNotFound = FALSE

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Consultingwerk.OERA.FindRecordResult FindRecord2 (character, handle, IQueryExpressionWithSort, integer, integer, logical)

Purpose:	Finds a record in the data source query and returns the ROWID ARRAY
	(used as RESTART-ROWID in FetchData)
Notes:

Parameters:
pcFindString	CHARACTER
	WHERE eCustomer.CustNum = 10
phBufferHandle	HANDLE
	The temp-table buffer handle
poQuery	Consultingwerk.IQueryExpressionWithSort
	The current data-source query expression
piPrefetch	INTEGER
	The number of records to prefetch
piBatchSize	INTEGER
	The number of records to return to the client (total incl. prefetch)
plThrowOnNotFound	LOGICAL
	Logical value indicating if an error should be thrown when the record cannot be found
Returns	Consultingwerk.OERA.FindRecordResult
	The FindRecordResult with the array of rowids and the information if a previous batch is available, returns ? when no record was found and plThrowOnNotFound = FALSE

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FindSourceBuffer (handle, logical)

Purpose:	Locates the matching record in the first source buffer of the given
	Dataset Buffer
Notes:

Parameters:
phBuffer	HANDLE
	The handle of a (after or before) ProDataset buffer
plExclusiveLock	LOGICAL
	Logical value indicating if the record should be locked exclusively

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CHARACTER GetDefinedBufferName (character)

Purpose:	Finds a matching buffer name in the current dataset, and returns the defined buffer name
Notes:

Parameters:
pcName	CHARACTER
	The buffer name to find
Returns	CHARACTER
	The defined buffer name, or the input name, if none exists or could be found

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CHARACTER GetDefinedBufferName (integer)

Purpose:	Finds a matching buffer name in the current dataset, and returns the defined buffer name
Notes:

Parameters:
piIndex	INTEGER
	The index of the buffer in the dataset
Returns	CHARACTER
	The defined buffer name, or the dataset buffer name

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HandleKnownCommitErrors (SysError, character, handle)

Purpose:	Handles known commit errors and adds error messages to the before buffer
	Notes : Extracted from CommitChanges (SysError catch block)

Parameters:
poSysErr	Progress.Lang.SysError
	The SysError thrown by SAVE-ROW-CHANGES
pcReturnValue	CHARACTER
	The RETURN-VALUE after SAVE-ROW-CHANGES
phBeforeBuff	HANDLE
	The handle of the before buffer

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HandleRecordLockedError (handle, SysError)

Purpose:	Handles a record locked error invoked during the SAVE-ROW-CHANGES
	method
Notes:	Allows customization to the Progress default error message

Parameters:
phBeforeBuffer	HANDLE
	The handle to before buffer
poSysError	Progress.Lang.SysError
	The original error raised

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InitializeDataAccessQueryLogging ()

Purpose:	Initializes DataAccessLogging
Notes:

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HANDLE InsertToDataSourceQuery (handle, IFetchDataRequest, character)

Purpose:	Creates a new Query to be used as a DATA-SOURCE for a ProDataset
	member buffer
Notes:	Wrapper to the access to the DSQueryString class to simplify overriding
	the query manipulation in a custom Data Access class or customer
	DataAccess base class override
	This Query is prepared based on the Query String that was provided
	(by the consumer) and the Source Default Query of the Data Access object

Parameters:
phBufferHandle	HANDLE
	The Handle of the ProDataset member buffer
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The FetchDataRequest object of the current request
pcQueryString	CHARACTER
	The query string provided by the consumer
Returns	HANDLE
	The handle of the Query that was created

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HANDLE InsertToDataSourceQuery (handle, IFetchDataRequest, IQueryExpressionWithSort)

Purpose:	Creates a new Query to be used as a DATA-SOURCE for a ProDataset
	member buffer
Notes:	Wrapper to the access to the DSQueryString class to simplify overriding
	the query manipulation in a custom Data Access class or customer
	DataAccess base class override
	This Query is prepared based on the Query String that was provided
	(by the consumer) and the Source Default Query of the Data Access object

Parameters:
phBufferHandle	HANDLE
	The Handle of the ProDataset member buffer
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The FetchDataRequest object of the current request
poQuery	Consultingwerk.IQueryExpressionWithSort
	The query expression with sort provided by the consumer
Returns	HANDLE
	The handle of the Query that was created

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InvokeCommitChangesCallback (CommitCallbackTypeEnum, handle)

Purpose:	Invokes a CommitChangesCallback
Notes:	Provides a central location to handle error thrown from these
	callback methods. By default errors thrown will be thrown to the
	caller. By overriding this method customers can CATCH errors and add
	them to the ProDataset buffer ERROR-STRING etc.

Parameters:
poCommitCallbackType	Consultingwerk.OERA.Enum.CommitCallbackTypeEnum
	The CommitCallbackTypeEnum value describing the callback to be invoked
phBeforeBuffer	HANDLE
	The handle of the before-buffer (to determine the ROW-STATE)

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LOGICAL IsQueryFlagPresent (character, character)

Purpose:	Returns if the passed in field (prefixed with the temp-table)
	is referenced in a list of query flag fields and is contained in the
	FetchDataRequest's QueryExpression
Notes:

Parameters:
pcFieldName	CHARACTER
	The name of the field to verify
pcQueryFlagFields	CHARACTER
	The name of the fields to compare with
Returns	LOGICAL
	Logical value indicating if the passed in field is referenced in a list of query flag fields and is contained in the FetchDataRequest's QueryExpression

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LogCurrentRowModifiedIssue (handle)

Purpose:	Logs details about "current row has been modified
	by another user to the current logfile
Notes:	Invoked by the SaveRowChanges method when error 11913 occurs
	and the SaveRowChanges custom logentry type is activated

Parameters:
phBeforeBuffer	HANDLE
	The handle of the current before buffer (record)

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LogUnableToFindDbBufferIssue (handle, Error)

Purpose:	Logs details about "Unable to find record for db buffer "name" during
	SAVE-ROW-CHANGES" to the current logfile
Notes:	Invoked by the SaveRowChanges method when error 11912 occurs
	and the SaveRowChanges custom logentry type is activated

Parameters:
phBeforeBuffer	HANDLE
	The handle of the current before buffer (record)
poError	Progress.Lang.Error
	The Error instance

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Consultingwerk.OERA.IDSQueryString NewDSQueryString (character, character)

Purpose:	Factory method for the DSQueryString objects
Notes:	It's not recommended that customers override this method, SCL-866
	Customers should rather override the two methods NewDSQueryString
	(pcQuery, pcBuffer, plFilterUsingInnerJoin) and NewDSQueryStringForKeyValueTable
	(pcQuery, pcBuffer, plFilterUsingInnerJoin, poFetchDataByKeyTableParameter,
	pcFieldPairs)

Parameters:
pcQuery	CHARACTER
	The Query String for the DSQueryString instance
pcBuffer	CHARACTER
	The Buffer Name for the DSQueryString instance
Returns	Consultingwerk.OERA.IDSQueryString
	The new IDSQueryString instance

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Consultingwerk.OERA.IDSQueryString NewDSQueryString (character, character, logical)

Purpose:	Factory method for the DSQueryString objects
Notes:	Customers should override this method as a factory for custom IDSQueryString
	implementations

Parameters:
pcQuery	CHARACTER
	The Query String for the DSQueryString instance
pcBuffer	CHARACTER
	The Buffer Name for the DSQueryString instance
plFilterUsingInnerJoin	LOGICAL
	Logical value indicating if the data source query should be using an inner join
Returns	Consultingwerk.OERA.IDSQueryString
	The new IDSQueryString instance

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Consultingwerk.OERA.IDSQueryString NewDSQueryString (IQueryExpressionWithSort, character, logical)

Purpose:	Factory method for the DSQueryString objects
Notes:	Customers should override this method as a factory for custom IDSQueryString
	implementations

Parameters:
poQuery	Consultingwerk.IQueryExpressionWithSort
	The Query String for the DSQueryString instance
pcBuffer	CHARACTER
	TheIQueryExpressionWithSort instance for the DSQueryString instance
plFilterUsingInnerJoin	LOGICAL
	Logical value indicating if the data source query should be using an inner join
Returns	Consultingwerk.OERA.IDSQueryString
	The new IDSQueryString instance

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Consultingwerk.OERA.IDSQueryString NewDSQueryStringForKeyValueTable (character, character, logical, IFetchDataByKeyTableParameter, character)

Purpose:	Factory method for the DSQueryStringForKeyValueTable objects
Notes:	Customers should override this method as a factory for custom
	DSQueryStringForKeyValueTable implementations

Parameters:
pcQuery	CHARACTER
	The Query String for the DSQueryString instance
pcBuffer	CHARACTER
	The Buffer Name for the DSQueryString instance
plFilterUsingInnerJoin	LOGICAL
	Logical value indicating if the data source query should be using an inner join
poFetchDataByKeyTableParameter	Consultingwerk.OERA.IFetchDataByKeyTableParameter
	The IFetchDataByKeyTableParameter instance with the parameter of the FetchDataByKeyTable method
pcFieldPairs	CHARACTER
	The originally attached field pairs
Returns	Consultingwerk.OERA.IDSQueryString
	The new IDSQueryString instance

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Consultingwerk.OERA.IDSQueryString NewDSQueryStringForTempTable (character, character, logical, IFetchDataByTempTableParameter)

Purpose:	Factory method for the DSQueryStringForTempTable objects
Notes:	Customers should override this method as a factory for custom
	DSQueryStringForTempTable implementations

Parameters:
pcQuery	CHARACTER
	The Query String for the DSQueryString instance
pcBuffer	CHARACTER
	The Buffer Name for the DSQueryString instance
plFilterUsingInnerJoin	LOGICAL
	Logical value indicating if the data source query should be using an inner join
poFetchDataByTempTableParameter	Consultingwerk.OERA.IFetchDataByTempTableParameter
	The IFetchDataByTempTableParameter instance with the parameter of the FetchDataByTempTable method
Returns	Consultingwerk.OERA.IDSQueryString
	The new IDSQueryString instance

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Consultingwerk.IQueryRowIdentifier NewQueryRowIdentifier ()

Purpose:	Overridable factory method to create an instance of the IQueryRowIdentifier
	class
Notes:

Returns	Consultingwerk.IQueryRowIdentifier
	The reference to the new instance of the IQueryRowIdentifier interface

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OnAfterSaveChanges (EventArgs)

Purpose:	Raises the AfterSaveChanges
Notes:

Parameters:
e	Consultingwerk.EventArgs
	The Consultingwerk.EventArgs with the data for the event

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OnAfterSavingRowChanges (SaveRowChangesEventArgs)

Purpose:	Raises the AfterSavingRowChanges event
Notes:

Parameters:
e	Consultingwerk.OERA.SaveRowChangesEventArgs
	The SaveRowChangesEventArgs with the data for this event

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OnBeforeSaveChanges (EventArgs)

Purpose:	Raises the BeforeSaveChanges
Notes:

Parameters:
e	Consultingwerk.EventArgs
	The Consultingwerk.EventArgs with the data for the event

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OnBeforeSavingRowChanges (SaveRowChangesEventArgs)

Purpose:	Raises the BeforeSavingRowChanges event
Notes:

Parameters:
e	Consultingwerk.OERA.SaveRowChangesEventArgs
	The SaveRowChangesEventArgs with the data for this event

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OnHandleCommitError (HandleCommitErrorEventArgs)

Purpose:	Raises the HandleCommitError
Notes:

Parameters:
e	Consultingwerk.OERA.HandleCommitErrorEventArgs
	The HandleCommitErrorEventArgs with the data for the event

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OnHandleCommitSysError (HandleCommitErrorEventArgs)

Purpose:	Raises the HandleCommitSysError
Notes:

Parameters:
e	Consultingwerk.OERA.HandleCommitErrorEventArgs
	The HandleCommitErrorEventArgs with the data for the event

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CHARACTER ParentRelationSourceQueryString (handle)

Purpose:	Returns the query string matching the DATA-RELATION field pairs
	referencing the source fields on the parent table
Notes:

Parameters:
phBuffer	HANDLE
	The child buffer of the relation
Returns	CHARACTER
	The source query string matching the data-relation criteria

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Consultingwerk.IQueryExpression ParseTopBufferRequestQuery (IFetchDataRequest)

Purpose:	Parses the Query of the top-buffer from the current request
Notes:

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The reference to the IFetchDataRequest
Returns	Consultingwerk.IQueryExpression
	The IQueryExpression representing the query string or ? when there is no query

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ProcessFetchDataRequestVariables (IFetchDataRequest)

Purpose:	Expands variables in the FetchDataRequest:Queries
Notes:	Variables are expected within a character value and be surrounded
	by ${ } (ANT style property Syntax)
	${LanguageIsoCode}, ${LanguageKey}, ${UserKey}, ${UserName}, ${UserFullName},
	${CurrentWeek}, ${LastWeek}, ${CurrentMonth}, ${LastMonth}, ${CurrentYear},
	${LastYear}, ${Today}, ${Yesterday}, ${Tomorrow}

Parameters:
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The IFetchDataRequest instance to customize

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RepositionBackwards (handle, integer)

Purpose:	Reposition the given query backwards by the given number of records
Notes:	Overridable by child classes to implement custom behavior

Parameters:
phQuery	HANDLE
	The query handle to reposition backwards
piNumRecords	INTEGER
	The number of records

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ROWID RepositionBackwards (handle, rowid[], integer)

Purpose:	Evaluates the ROWID from which the ProDataset FILL operation
	needs to start on a backwards fill operation
Notes:	This method may be overridden in a DataAccess object class
	This method is no longer used for the backwards batching.
	It is kept for backwards compatibility of customers code.

Parameters:
phQuery	HANDLE
	The Query Handle to reposition backwards
proRowids	ROWID
	The current ROWID Array
piBatchSize	INTEGER
	The number of records to reposition backwards
Returns	ROWID
	The array of starting ROWIDs for the next FILL operation

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SaveBuffer (handle)

Purpose:	Called from saveChanges to process changes
	for a single DataSet temp-table buffer.
Notes:	This is similar to the OERI BE version, but has no pre and
	post transaction hooks because:
	- This method might very well be called inside a transaction.
	- The BE supports hooks outside of the transaction scope.

Parameters:
phBuffer	HANDLE
	The handle of the after buffer

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SaveChanges ()

Purpose:	Save changes to physical storage
Notes:	This implementation of data access save traverses all records in order
to:
	- Allow the DA to control transactions, which cannot be directly
	controlled in distributed BL. Transaction control is a concern of
	the BL, but should not be controlled with TRANSACTION keyword.
	- Offer a course grained save interface from distributed BL
	- The default operation here is just a transaction per record
	- This simple sample does not use child relations to traverse
	the buffers as the OERI BE example. (A property that controls
	update order would give the same effect).
	- Traversing of child data from a parent would make sense if done for
	one parent record at a time.

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SaveRowChanges (handle)

Purpose:	Overridable method that executes SAVE-ROW-CHANGES on the before buffer
Notes:	Called from CommitChanges

Parameters:
phBeforeBuffer	HANDLE
	The handle of the before buffer

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SetDatasetBufferCallback (handle, character, character)

Purpose:	Sets's a ProDataset Buffer Callback-Method (BEFORE-FILL, AFTER-FILL, BEFORE-ROW-FILL, ...)
Notes:

Parameters:
phBuffer	HANDLE
	The ProDataset Buffer Handle to add the callback for
pcCallback	CHARACTER
	The DatasetBufferEventEnum value to add the callback method for
pcMethod	CHARACTER
	The name of the Method to register as a callback

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SetDatasetBufferCallback (handle, character, character, Object)

Purpose:	Sets's a ProDataset Buffer Callback-Method (BEFORE-FILL, AFTER-FILL, BEFORE-ROW-FILL, ...)
Notes:

Parameters:
phBuffer	HANDLE
	The ProDataset Buffer Handle to add the callback for
pcCallback	CHARACTER
	The DatasetBufferEventEnum value to add the callback method for
pcMethod	CHARACTER
	The name of the Method to register as a callback
poObject	Progress.Lang.Object
	The Object that contains the callback method

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SetDatasetCallback (character, character)

Purpose:	Sets's a ProDataset Callback-Method (BEFORE-FILL, AFTER-FILL)
Notes:

Parameters:
pcCallback	CHARACTER
	The DatasetEventEnum value to add the callback method for
pcMethod	CHARACTER
	The name of the Method to register as a callback

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SetDatasetCallback (character, character, Object)

Purpose:	Sets's a ProDataset Callback-Method (BEFORE-FILL, AFTER-FILL)
Notes:

Parameters:
pcCallback	CHARACTER
	The DatasetEventEnum value to add the callback method for
pcMethod	CHARACTER
	The name of the Method to register as a callback
poObject	Progress.Lang.Object
	The Object that contains the callback method

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Consultingwerk.IQueryRowIdentifier SkipRecords (integer, handle)

Purpose:	Returns the Query Row Identifier (ROWID) to be used when navigating
	that DATA-SOURCE query based on the Skip argument of the FetchDataRequest
Notes:	Typically used when paging from a JSDO/Kendo UI client, SCL-819, SCL-822

Parameters:
piSkipRecords	INTEGER
	The number of records to skip from the beginning
phBuffer	HANDLE
	The temp-table buffer who's data-source should be navigated using Skip
Returns	Consultingwerk.IQueryRowIdentifier
	The IQueryRowIdentifier identifying the restart rowid

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Consultingwerk.IQueryRowIdentifier SkipRecords (integer, handle, logical)

Purpose:	Returns the Query Row Identifier (ROWID) to be used when navigating
	that DATA-SOURCE query based on the Skip argument of the FetchDataRequest
Notes:	Typically used when paging from a JSDO/Kendo UI client, SCL-819, SCL-822

Parameters:
piSkipRecords	INTEGER
	The number of records to skip from the beginning
phBuffer	HANDLE
	The temp-table buffer who's data-source should be navigated using Skip
plSkipRowsSequentially	LOGICAL
	Logical value indicating if we should skip rows sequentially
Returns	Consultingwerk.IQueryRowIdentifier
	The IQueryRowIdentifier identifying the restart rowid

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CHARACTER SourceColumn (character, character)

Purpose:	Returns the database field name matching a temp-table field name
	contained in a consumers query string (query string vs. temp-table
	definition)
Notes:	Call-back used by Consultingwerk.OERA.Query.DSQueryString (part of
DataAccess:FetchData	FetchData () query preparation
TO-DO:	Provide code for alternative mapping

Parameters:
pcTable	CHARACTER
	The temp table name to return the source (database table) field name for
pcColumn	CHARACTER
	The temp table column name to return the source (database table) field name for
Returns	CHARACTER
	The database field name mapped to the passed in temp-table field

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CHARACTER SourceColumn2 (character, character)

Purpose:	Wrapper to the SourceColumn method - ensures that Data-Sources are attached
Notes:

Parameters:
pcTable	CHARACTER
	The temp table name to return the source (database table) field name for
pcColumn	CHARACTER
	The temp table column name to return the source (database table) field name for
Returns	CHARACTER
	The database field name mapped to the passed in temp-table field

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CHARACTER SourceDefaultQuery (character)

Purpose:	Returns the base query string used to retrieve data for the temp
	tables. This query string will be appended by the query provided by
	the consumer (FetchDataRequest object).
Notes:	Call-back used by Consultingwerk.OERA.Query.DSQueryString (part of
DataAccess:FetchData	FetchData () query preparation
TO-DO:	Provide code to return the DATA-SOURCE root query string

Parameters:
pcTable	CHARACTER
	The temp table name to return the source default (database) query string for
Returns	CHARACTER
	The base query string used to retrieve data for the given temp-table

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SuggestDataSourceIndex (handle, character)

Purpose:	Method allows enforcing specific indexes when populating child record
	of a data-relation. When the parent buffer and the child buffer are
	FILL'ed during the ProDataset:FILL() operation, we ensure the given index
Notes:	Allows to avoid situations where in a Order -> OrderLine data-relation
	when filtered by Orderline.ItemNum the itemnum index is chosen instead
	of the more efficient orderline index (both indexes provide one equality
	match, but itemnum is the alphabetically first index)
	This method should be called from the dataset's BEFORE-FILL call back
	Only processes the first buffer of the data-source query, as we assume,
	that the proper join criteria between the data-source query buffers
	is specified in the SourceDefaultQuery

Parameters:
phChildBuffer	HANDLE
	The handle of the child buffer
pcIndexName	CHARACTER
	The index name to use

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VerifyRequestTables (character, IFetchDataRequest)

Purpose:	Verifies tables from the current FetchDataRequest
Notes:

Parameters:
pcTables	CHARACTER
	The list of tables form the current request
poFetchDataRequest	Consultingwerk.OERA.IFetchDataRequest
	The reference to the FetchDataRequest instance

Constructor Detail

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STATIC DataAccess ()

Purpose:	Static Constructor of the DataAccess class
Notes:

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DataAccess (handle)

Purpose:	Constructor of the DataAccess objects
Notes:	Requires to pass a valid dataset handle

Parameters:
phDataset	HANDLE
	The handle of the Business Entity dataset

Event Detail

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AfterSaveChanges (Object, EventArgs)

Purpose:	Raised at the end of SaveChanges - within the database transaction
	block
Notes:

Parameters:
sender	Progress.Lang.Object
	The object that raised the AfterSaveChanges event
e	Consultingwerk.EventArgs
	The Consultingwerk.EventArgs with the data for the event

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AfterSavingRowChanges (Object, SaveRowChangesEventArgs)

Purpose:	Event raised after the execution of the SAVE-ROW-CHANGES method
	for an individual record in the DataAccessObject
Notes:

Parameters:
sender	Progress.Lang.Object
	The reference to the object that raised this event
e	Consultingwerk.OERA.SaveRowChangesEventArgs
	The SaveRowChangesEventArgs with the data for this event

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BeforeSaveChanges (Object, EventArgs)

Purpose:	Raised at the beginning of SaveChanges - within the database transaction
	block
Notes:	This is not a cancelable event - as we have already started the database
	transaction and really only errors should revert it at this point

Parameters:
sender	Progress.Lang.Object
	The object that raised the BeforeSaveChanges event
e	Consultingwerk.EventArgs
	The Consultingwerk.EventArgs with the data for the event

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BeforeSavingRowChanges (Object, SaveRowChangesEventArgs)

Purpose:	Event raised before the execution of the SAVE-ROW-CHANGES method
	for an individual record in the DataAccessObject
Notes:

Parameters:
sender	Progress.Lang.Object
	The reference to the object that raised this event
e	Consultingwerk.OERA.SaveRowChangesEventArgs
	The SaveRowChangesEventArgs with the data for this event

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HandleCommitError (Object, HandleCommitErrorEventArgs)

Purpose:	Raised to allow custom handling of AppError's (Application errors,
	e.g. from DB triggers) raised while performing the SaveRowChanges method
Notes:

Parameters:
sender	Progress.Lang.Object
	The object that raised the HandleCommitError event
e	Consultingwerk.OERA.HandleCommitErrorEventArgs
	The HandleCommitErrorEventArgs with the data for the event

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HandleCommitSysError (Object, HandleCommitErrorEventArgs)

Purpose:	Raised to allow custom handling of SysError's (Progress runtime errors)
	raised while performing the SaveRowChanges method
Notes:

Parameters:
sender	Progress.Lang.Object
	The object that raised the HandleCommitError event
e	Consultingwerk.OERA.HandleCommitErrorEventArgs
	The HandleCommitErrorEventArgs with the data for the event

Property Detail

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Consultingwerk.Framework.Collections.CharacterDictionary AssignSkipDictionary

Returns	Consultingwerk.Framework.Collections.CharacterDictionary

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CHARACTER AssignSkipList

Returns	CHARACTER

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LOGICAL CheckDataTypeConversionForChildRelations

Returns	LOGICAL

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CHARACTER CUSTOM_LOG_ENTRY

Returns	CHARACTER

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HANDLE DatasetHandle

Returns	HANDLE

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LOGICAL DataSourcesAttached

Returns	LOGICAL

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CHARACTER DefinedBufferNames

Returns	CHARACTER

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CHARACTER FetchDataArgument

Returns	CHARACTER

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Progress.Lang.Object FetchDataArguments

Returns	Progress.Lang.Object

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Consultingwerk.OERA.IFetchDataRequest FetchDataRequest

Returns	Consultingwerk.OERA.IFetchDataRequest

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LOGICAL FilterUsingInnerJoin

Returns	LOGICAL

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LOGICAL ForceApplyQueryOnChildTables

Returns	LOGICAL

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LOGICAL IgnoreMissingDataSourceOnSaveChanges

Returns	LOGICAL

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LOGICAL InFetchDataByKeyTable

Returns	LOGICAL

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LOGICAL InFetchDataByTempTable

Returns	LOGICAL

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LOGICAL LogFetchDataDetails

Returns	LOGICAL

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LOGICAL PrepareJoinedChildTableQueries

Returns	LOGICAL

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Consultingwerk.OERA.QueryPurposeEnum QueryPurpose

Returns	Consultingwerk.OERA.QueryPurposeEnum

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Consultingwerk.OERA.Enum.RequestTypeEnum RequestType

Returns	Consultingwerk.OERA.Enum.RequestTypeEnum

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CHARACTER SourceBufferNames

Returns	CHARACTER

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CHARACTER SourceTableNames

Returns	CHARACTER

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LOGICAL ThrowErrorsOnFillFailed

Returns	LOGICAL

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LOGICAL UseForwardOnlyQueries

Returns	LOGICAL

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LOGICAL ValidateRestartRowid

Returns	LOGICAL

info@consultingwerk.de http://www.consultingwerk.de 13.04.2026 10:22:08