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OUT stage v1.3 |
Pipelines v2.1 |
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Syntax |
┌─0──────┐>>──OUT──┼────────┼──────────────────────────────────────────────────────────────────><
└─stream─┘
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Purpose |
OUT is dual purpose. Use the OUT stage to read records from its primary input stream and write them to the specified target stream and to its primary output stream, if it is connected. OUT appends a Line-Feed character to each output record that it writes to the specified target stream, primary output stream records are written unchanged.
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When OUT is specified in a pipeline that has been launched by the CALLPIPE stage command of the calling pipeline; the target stream operand corresponds to the specified output stream of the CALLPIPE stage. In other words, records that are written by OUT to stream 0; flow back into the CALLPIPE stage and out through its primary output stream, and records that are written by OUT to stream 1; flow back into the CALLPIPE stage and out through its secondary output stream. Records that are intended for a CALLPIPE output stream that is not connected; are discarded. |
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● |
When
OUT is specified in a pipeline that has not been launched by the CALLPIPE
stage command of a calling pipeline; records that are written to stream 0 are routed to the system
output stream; STDOUT. Records that are written to stream 1, are routed to the system output stream; STDERR. |
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Operands |
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Streams |
The following streams are used by the OUT stage:
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Usage |
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1. |
OUT
does not delay the records. |
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2. |
After
writing a record to the specified target stream;
OUT writes that same record to its primary output stream, if it is connected. |
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3. |
You
should only specify a single OUT stage command in any one set of pipelines; otherwise
the results may be unpredictable. |
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4. |
OUT is designed to work in conjunction
with the CALLPIPE stage command and the standard output streams; STDOUT and
STDERR. |
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5. |
OUT verifies that its secondary input
and output streams are not connected and then begins execution. |
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Examples |
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1. |
When the following pipeline is called by
the CALLPIPE stage command of a calling pipeline; it reads input records from
CALLPIPE and writes output records back to CALLPIPE. However, when the same
pipeline is called in any other way; it reads records from STDIN and writes
records to STDOUT. mypipe.rex **** Top of file ****1 Address Rxpipe 23 'pipe in | change /ifdef/ /ifndef/ | out' 45 Exit 0 **** End of file ****
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2. |
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3. |
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Related |
CALLPIPE, CONSOLE, IN |
History |
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Version |
Date |
Action |
Description |
Pipelines |
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1.3 |
27.12.2021 |
changed |
Application-wide rewrite. |
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04.02.2012 |
changed |
OUT writes
output records to the CALLPIPE stage command of the calling pipeline (through
a shared file segment) or to its STDOUT stream or STDERR stream. |
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23.05.2011 |
added |
Support
for two output streams; OUT 0 and OUT 1, where OUT 0
corresponds to the primary output stream
of the CALLPIPE stage of the calling pipeline and OUT 1 corresponds to the
secondary output stream of the
CALLPIPE stage of the calling pipeline. |
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1.0 |
06.09.2007 |
created |
First version. |
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