$Buffer Position: Difference between revisions
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{{DISPLAYTITLE:$ | {{DISPLAYTITLE:$Buffer_Position}} | ||
<b>Function</b> | <b>Function</b> | ||
<p>Returns the current Universal Buffer position</p> | <p>Returns the current Universal Buffer position</p> | ||
<b>Syntax</b> | <b>Syntax</b> | ||
<p class="code">$ | <p class="code">$Buffer_Position | ||
</p> | </p> | ||
<b>Where</b> | <b>Where</b> | ||
<p>The $ | <p>The $Buffer_Position function, which takes no arguments, returns numeric results for the following circumstances:</p> | ||
<table> | <table> | ||
<tr class="head"> | <tr class="head"> | ||
| Line 27: | Line 27: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>MQGET {image | %variable}</td> | <td>[[MQ/204_and_SOUL_statements#MQGET_statement|MQGET]] {image | %variable}</td> | ||
<td>Byte after the last byte copied into the %variable or image. </td> | <td>Byte after the last byte copied into the %variable or image. </td> | ||
<td> </td> | <td> </td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>MQGET, running in an APSY subsystem with AUTOCOMMIT=NO</td> | <td>MQGET, running in an [[Application_Subsystem_development|APSY]] subsystem with AUTOCOMMIT=NO</td> | ||
<td>Position after the last byte of the previous request</td> | <td>Position after the last byte of the previous request</td> | ||
<td> </td> | <td> </td> | ||
| Line 42: | Line 42: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>MQPUT or MQPUT1</td> | <td>[[MQ/204_and_SOUL_statements#MQPUT_statement|MQPUT]] or [[MQ/204_and_SOUL_statements#MQPUT1_statement|MQPUT1]]</td> | ||
<td>1</td> | <td>1</td> | ||
<td>Beginning of the buffer.</td> | <td>Beginning of the buffer.</td> | ||
| Line 57: | Line 57: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
<td>All other User Language statements--including when MQ/204 is not linked in </td> | <td>All other User Language statements--including when [[MQ/204_overview|MQ/204]] is not linked in </td> | ||
<td>-1</td> | <td>-1</td> | ||
<td> </td> | <td> </td> | ||
Latest revision as of 14:11, 11 January 2018
Function
Returns the current Universal Buffer position
Syntax
$Buffer_Position
Where
The $Buffer_Position function, which takes no arguments, returns numeric results for the following circumstances:
| If the most recent statement was... | System returns... | Signifying... |
|---|---|---|
| MODIFY BUFFER NOPRESERVE | 1 | |
| MODIFY BUFFER PRESERVE | Position is unchanged. | If the new BUFFER size is less than this value, then it is set to the byte after the last byte in the BUFFER area. |
| MQGET {image | %variable} | Byte after the last byte copied into the %variable or image. | |
| MQGET, running in an APSY subsystem with AUTOCOMMIT=NO | Position after the last byte of the previous request | |
| MQGET BUFFER | 1 | Beginning of the buffer. |
| MQPUT or MQPUT1 | 1 | Beginning of the buffer. |
| READ FROM BUFFER | Position after the last byte read from the buffer. | First byte read by a subsequent READ from BUFFER area without POSITION specified. |
| WRITE ON BUFFER | Position after the last byte written to the buffer. | First byte written by a subsequent WRITE to BUFFER area without POSITION specified. |
| All other User Language statements--including when MQ/204 is not linked in | -1 |