$Currec: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
m (mixed case for For Record Number) |
||
| (4 intermediate revisions by 2 users not shown) | |||
| Line 5: | Line 5: | ||
</p> | </p> | ||
<p> | <p> | ||
At the beginning of each pass through a <var>For Each Record</var> loop, <var>$Currec</var> is set to the record number of the record to be processed in that pass. When the <var>For</var> loop is exited, because all records have been processed or because a <var>[[ | At the beginning of each pass through a <var>[[Record loops#FOR EACH RECORD statement|For Each Record]]</var> loop, <var>$Currec</var> is set to the record number of the record to be processed in that pass. When the <var>For</var> loop is exited, because all records have been processed or because a <var>[[Flow of control in User_Language#LOOP END statement|Loop End]]</var> or <var>[[Flow of control in User Language#JUMP TO statement|Jump]]</var> statement has been encountered, <var>$Currec</var> is restored to its value prior to the <var>For</var> statement. </p> | ||
<p> | <p> | ||
<var>$Currec</var> takes no arguments. </p> | <var>$Currec</var> takes no arguments. </p> | ||
==Usage notes== | |||
<p> | <p> | ||
Be aware of these facts when using <var>$Currec</var>: </p> | Be aware of these facts when using <var>$Currec</var>: </p> | ||
| Line 13: | Line 15: | ||
<li>A <var>[[Data maintenance#STORE RECORD statement|Store Record]]</var> statement resets <var>$Currec</var> to the record number of the newly stored record. If the <var>Store Record</var> statement is issued inside of a <var>For Record</var> loop, <var>$Currec</var> retains the stored record number until the next pass through the <var>For</var> loop or until the next <var>Store Record</var> statement. If the <var>Store Record</var> statement is issued outside of a <var>For Record</var> loop, <var>$Currec</var> will retain the stored record number until the next <var>Store Record</var> or the next <var>For Record</var> loop. </li> | <li>A <var>[[Data maintenance#STORE RECORD statement|Store Record]]</var> statement resets <var>$Currec</var> to the record number of the newly stored record. If the <var>Store Record</var> statement is issued inside of a <var>For Record</var> loop, <var>$Currec</var> retains the stored record number until the next pass through the <var>For</var> loop or until the next <var>Store Record</var> statement. If the <var>Store Record</var> statement is issued outside of a <var>For Record</var> loop, <var>$Currec</var> will retain the stored record number until the next <var>Store Record</var> or the next <var>For Record</var> loop. </li> | ||
<li>An alternative to <var>$Currec</var> is the <var>[[RecordNumber (Record function)|RecordNumber]]</var> function used against a <var>Record</var> object. The <var>RecordNumber</var> function returns the record number of the current record being processed in a <var>For</var> loop, and that record number does not change when a <var>[[Data maintenance#STORE RECORD statement|Store Record]]</var> statement is evaluated. | <li>An alternative to <var>$Currec</var> is the <var>[[RecordNumber (Record function)|RecordNumber]]</var> function used against a <var>[[Record_class|Record]]</var> object. The <var>RecordNumber</var> function returns the record number of the current record being processed in a <var>For</var> loop, and that record number does not change when a <var>[[Data maintenance#STORE RECORD statement|Store Record]]</var> statement is evaluated. | ||
<li>In a record loop on the records of a <var>Sort</var> statement, <var>$Currec</var> is set to the record number of the record from which the temporary sort copy was made. </li> | <li>In a record loop on the records of a <var>[[Sorting#SORT_RECORDS_statement|Sort]]</var> statement, <var>$Currec</var> is set to the record number of the record from which the temporary sort copy was made. </li> | ||
<li>Record numbers are not unique within a file group. The number returned by <var>$Currec</var> is valid only in reference to the file from which the record came. </li> | <li>Record numbers are not unique within a file group. The number returned by <var>$Currec</var> is valid only in reference to the file from which the record came. </li> | ||
| Line 31: | Line 33: | ||
END | END | ||
</p> | </p> | ||
Also, as of Model 204 version 7.5, the <var> | Also, as of Model 204 version 7.5, the <var>For Record Number</var> statement accepts an expression after it, for example: | ||
<p class="code">IN FILE CLAIMS STORE RECORD | <p class="code">IN FILE CLAIMS STORE RECORD | ||
... | ... | ||
Latest revision as of 21:48, 26 April 2018
The $Currec function returns an integer equal to the internal number of the current record.
At the beginning of a request, $Currec is set to minus one, an invalid record number.
At the beginning of each pass through a For Each Record loop, $Currec is set to the record number of the record to be processed in that pass. When the For loop is exited, because all records have been processed or because a Loop End or Jump statement has been encountered, $Currec is restored to its value prior to the For statement.
$Currec takes no arguments.
Usage notes
Be aware of these facts when using $Currec:
- A Store Record statement resets $Currec to the record number of the newly stored record. If the Store Record statement is issued inside of a For Record loop, $Currec retains the stored record number until the next pass through the For loop or until the next Store Record statement. If the Store Record statement is issued outside of a For Record loop, $Currec will retain the stored record number until the next Store Record or the next For Record loop.
- An alternative to $Currec is the RecordNumber function used against a Record object. The RecordNumber function returns the record number of the current record being processed in a For loop, and that record number does not change when a Store Record statement is evaluated.
- In a record loop on the records of a Sort statement, $Currec is set to the record number of the record from which the temporary sort copy was made.
- Record numbers are not unique within a file group. The number returned by $Currec is valid only in reference to the file from which the record came.
Examples
This request prints the record number of a new record:
BEGIN GET.RECS: FIND ALL RECORDS END FIND FOR 5 RECORDS IN GET.RECS PRINT 'THE INTERNAL RECORD NO IS ' WITH $CURREC END FOR END
Also, as of Model 204 version 7.5, the For Record Number statement accepts an expression after it, for example:
IN FILE CLAIMS STORE RECORD ... END STORE IN FILE CLAIMS FRN $CURREC ... END FOR