Data-source object handle

A handle to a data-source object. A data-source object supports the automatic filling of a ProDataSet object member table, as well as applying updates back to one or more database tables. There is a distinct data-source object for each member buffer, which allows a single ProDataSet object and a single FILL operation on that object to combine data from multiple databases. A data-source object is defined independently of any ProDataSet object.

A data-source object can be static or dynamic. A static data-source object is one you define at compile time with the DEFINE DATA-SOURCE statement. A dynamic data-source object is one you create at run time with the CREATE DATA-SOURCE statement. Use this handle to access the data-source object’s attributes and methods.

Note: Does not apply to SpeedScript programming.

Syntax

data-source-handle [ :attribute | :method ]

data-source-handle

A handle variable that references a data-source object.

attribute

An attribute of the data-source object.

method

A method of the data-source object.

Attributes

ADM-DATA attribute	FILL-WHERE-STRING attribute	HANDLE attribute
INSTANTIATING-PROCEDURE attribute	KEYS attribute	MERGE-BY-FIELD attribute
NAME attribute	NEXT-ROWID attribute	NEXT-SIBLING attribute
NUM-SOURCE-BUFFERS attribute	PREFER-DATASET attribute	PRIVATE-DATA attribute
QUERY attribute	RESTART-ROW attribute	RESTART-ROWID attribute
SAVE-WHERE-STRING attribute	TYPE attribute	–

Methods

ADD-SOURCE-BUFFER( ) method	GET-DATASET-BUFFER( ) method
GET-SOURCE-BUFFER( ) method	–

Notes

To associate a query with a dynamic data-source object, use the QUERY attribute. To disassociate the query and data-source object, set the QUERY attribute to the Unknown value (?).
To override the WHERE clause in the query, use the FILL-WHERE-STRING attribute.

See also

CREATE DATA-SOURCE statement, DEFINE DATA-SOURCE statement

OpenEdge Release 10.2B

Copyright © 2009 Progress Software Corporation