Converts data to a standard character format
and displays it to the current output destination (except when the
current output destination is the screen) or to a named output stream.
You can use data exported to a file in standard format as input
to other ABL procedures.
Syntax
EXPORT [ STREAM stream | STREAM-HANDLE handle ] [ DELIMITER character ]
{expression...
| record [ EXCEPT field... ]
}
[ NO-LOBS ]
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EXPORT [ STREAM stream | STREAM-HANDLE handle ] { memptr | longchar }
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- STREAM stream
- The name of a stream. If you do not name a stream, the AVM uses the
unnamed stream. See the DEFINE STREAM statement reference entry and the chapter on alternate I/O sources in OpenEdge
Development: Programming Interfaces for more information
on streams.
- STREAM-HANDLE handle
- Specifies the handle to a stream. If handle it
is not a valid handle to a stream, the AVM generates a run-time
error. Note that stream handles are not valid for the unnamed streams.
See the chapter on alternate I/O sources in OpenEdge Development:
Programming Interfaces for more information on streams and
stream handles.
- DELIMITER character
- The character to use as a delimiter between field values. The character parameter
must be a quoted single character. The default is a space
character.
If you specify more than one character as a delimiter,
ABL uses the first character as the delimiter.
-
expression . . .
- One or more expressions that you want to convert into standard character
format for display to an output destination.
-
record
- The name of the record buffer with fields that you want to convert into
the standard character format to display to an output destination.
To
use EXPORT with a record in a table name used in multiple databases,
you must qualify the record's table name with the database name. See
the Record phrase reference
entry for more information.
- EXCEPT field . . .
- The AVM exports all fields except those fields listed in the
EXCEPT phrase.
-
memptr
- A variable of data type MEMPTR that contains the text to export. The
EXPORT statement may contain a MEMPTR in its field list as long
as it is the only field in the list.
-
longchar
- A variable of data type LONGCHAR that contains the text to export. The
EXPORT statement may contain a LONGCHAR in its field list as long
as it is the only field in the list.
- NO-LOBS
- Directs the AVM to ignore large object data when exporting records that
contain BLOB or CLOB fields.
Examples
This
procedure converts the data in the Customer table into standard
character format and sends that data to the customer.d file:
r-exprt.p
OUTPUT TO customer.d.
FOR EACH Customer NO-LOCK:
EXPORT Customer.
END.
OUTPUT CLOSE.
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The next procedure shows how each EXPORT statement
creates one line of data (that is, fields are not wrapped onto several
lines):
r-exprt2.p
OUTPUT TO custdump.
FOR EACH Customer NO-LOCK:
EXPORT Customer.CustNum Customer.Name Customer.CreditLimit.
END.
OUTPUT CLOSE.
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That procedure creates a text file, custdump,
with one line for each Customer. This is a typical line of output:
1 "Lift Line Skiing" 58400
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Use the DELIMITER option to specify a character
other than a space to separate fields in the output file. For example,
the following procedure uses a semicolon:
r-cstout.p
OUTPUT TO custdump2.
FOR EACH Customer NO-LOCK:
EXPORT DELIMITER ";" Customer.CustNum Customer.Name Customer.CreditLimit.
END.
OUTPUT CLOSE.
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This is a typical line of output from this code:
1;"Lift Line Skiing";58400
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The following example displays using a MEMPTR
to EXPORT mixed character and binary data:
r-expmem.p
/* Character and binary data mixed */
DEFINE VARIABLE z AS MEMPTR NO-UNDO.
ASSIGN
SET-SIZE(z) = 100
PUT-STRING(z,1) = "hi there"
PUT-LONG(z,10) = 235
PUT-STRING(z,14) = "afterint"
PUT-LONG(z,22) = 76.
OUTPUT TO abc BINARY NO-CONVERT.
EXPORT z.
OUTPUT CLOSE.
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