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178 lines
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<title>SFLPGMQ (Subfile Program Message Queue) keyword for display files</title>
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<body id="rzakcmstdfsfpmq"><a name="rzakcmstdfsfpmq"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">SFLPGMQ (Subfile Program Message Queue) keyword for display files</h1>
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<div><p>Use this field-level keyword on the second (and last) field in
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the subfile record format for a message subfile.</p>
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<div class="section"><p>This field contains the name of the program message queue used
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by the <span class="keyword">i5/OS™</span> operating
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system to build a message subfile. In addition, SFLPGMQ can be specified on
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the subfile control record format when the SFLINZ keyword is specified on
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the subfile control record format.</p>
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<div class="p">The format of the keyword is: <pre>SFLPGMQ([10] | [276])</pre>
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</div>
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<p>When
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10 is specified, SFLPGMQ generates a 10-byte field. 10 is the default.</p>
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<p>When
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276 is specified, SFLPGMQ generates a 276-byte field.</p>
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<div class="p">This field is
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predefined as a character data type, hidden field. The following rules apply:
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<ul><li>The field name and the SFLPGMQ keyword and parameters are the only DDS
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you can specify for this field.</li>
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<li>If the name of the program message queue placed in this field at processing
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time is less than the field length (10 or 276 bytes), it must be left-aligned
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and padded with blanks.</li>
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</ul>
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</div>
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<div class="p">For Integrated
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Language Environment<sup>®</sup> (ILE) programs using the 276-byte parameter value,
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the format of the field data must be as follows: <ul><li>The first 256 bytes contains the ILE call message queue name. The call
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message queue name is the same as the ILE procedure name. The name must be
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left-aligned and padded with blanks.</li>
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<li>Bytes 257 through 266 will optionally contain the ILE module name. The
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name, when specified, must be left-aligned and padded with blanks. If no module
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name is provided, these bytes must be set to blanks.</li>
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<li>Bytes 267 through 276 will optionally contain the name of the ILE bound
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program name. The name, when specified, must be left-aligned and padded with
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blanks. If no bound program name is provided, these bytes must be set to blanks. <div class="note"><span class="notetitle">Notes:</span> <ol><li>If a parameter value of 10 is used on SFLPGMQ and an ILE procedure name
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longer than 10 bytes is placed into this field at processing time, the procedure
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name is truncated to 10 bytes. The results will be unpredictable.</li>
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<li>If a parameter value of 276 is used on SFLPGMQ and a program message queue
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name is placed into this field at processing time, bytes 257 through 276 must
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be set to blanks. If these bytes are not blank, the system assumes that a
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call message queue name has been given and will not find the specified program
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message queue.</li>
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</ol>
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</div>
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</li>
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<li>If the SFLPGMQ keyword is specified on both the subfile and subfile control
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record, the SFLPGMQ parameter values must match. However, different subfiles
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within the same file can use different SFLPGMQ parameter values.</li>
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</ul>
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</div>
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<p>This field is required on the subfile record format (identified
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by the SFL keyword) to build the subfile one message at a time through multiple
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output operations to the subfile record format.</p>
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<p>You can also specify
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this field on the subfile control record format (identified by the SFLCTL
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keyword) to build the subfile all at once through a single output operation
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to the subfile control record. Specify option indicators with the SFLINZ keyword
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to control the way the subfile is built.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Multiple output operation</h4><p>If you specify the field
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name and SFLPGMQ on the subfile record, you build the subfile one message
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at a time with separate output operations to the subfile record format. For
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each output operation, the message reference key must be in the first field
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of the record (SFLMSGKEY keyword), and the name of the program message queue
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must be in the second field. At the time of the output operation, the <span class="keyword">i5/OS</span> program retrieves the identified
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message from the queue and places it in the subfile as a record.</p>
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<div class="note"><span class="notetitle">Note:</span> A
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CL program cannot be used for a multiple output operation. The relative record
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number required each time a message is built is not supported for CL.</div>
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</div>
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<div class="section"><h4 class="sectiontitle">Single output operation</h4><p>If you specify SFLPGMQ (with
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its named field) and the SFLINZ keyword on the subfile control record format,
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you build the entire subfile with one output operation directed to the subfile
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control record format. On the output operation, the <span class="keyword">i5/OS</span> operating
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system initializes the subfile with all messages that are on the program message
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queue whose name is in the SFLPGMQ field. If necessary, the <span class="keyword">i5/OS</span> operating
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system extends the subfile to contain all messages on the queue. For this
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function, the SFLMSGRCD, SFLMSGKEY, and SFLPGMQ keywords must be specified
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with the subfile record format (SFL keyword). The SFLPGMQ and SFLMSGKEY keywords
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are ignored for this function and your program need not set the values of
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their fields.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Special value</h4><p>The SFLPGMQ field can contain a special
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value, * (asterisk), instead of a program message queue name. If the program
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moves an asterisk to the SFLPGMQ field, the <span class="keyword">i5/OS</span> operating
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system uses the message queue of the program issuing the output operation.
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You cannot use an asterisk if your program is a CL program.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Both multiple and single output operations</h4><p>If you
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specify SFLPGMQ with both the subfile record format and subfile control record
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format, you can use the single operation function one time and the multiple
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operation function some other time. Do this by setting indicators before issuing
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the output operation; however, all operations to a particular subfile must
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be consistent (multiple or single, but not intermixed) when preparing for
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a single display of the subfile.</p>
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<p>Option indicators and display size
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condition names are not valid for this keyword.</p>
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</div>
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<div class="example"><h4 class="sectiontitle">Example</h4><p>The following example shows how to specify
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the SFLPGMQ keyword.</p>
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<pre>|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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00010A R RCDMSGILE SFL SFLMSGRCD(3)
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00020A FLDKEY SFLMSGKEY
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00030A FLDPGM SFLPGMQ(276)
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00040A R SFLCTLILE SFLCTL(RCDMSG)
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00050A 01 SFLINZ
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00060A SFLPAG(17)
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00070A SFLSIZ(17)
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00080A SFLDSP SFLDSPCTL
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A :
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A :
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00110A FLDPGM SFLPGMQ(276)
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A R RCDMSGOPM SFL SFLMSGRCD(3)
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A FLDKEY SFLMSGKEY
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A FLDPGM SFLPGMQ
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A R SFLCTLOPM SFLCTL(RCDMSG)
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A 02 SFLINZ
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A SFLPAG(17)
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A SFLSIZ(17)
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A SFLDSP SFLDSPCTL
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A :
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A :
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A FLDPGM SFLPGMQ(10)
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A</pre>
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<p>In this example, the program can build the subfile with
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more than one output operation (indicator 01 off) or a single output operation
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(indicator 01 on) to the subfile control record format.</p>
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<p>In the first
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record, the name of the subfile program queue can be as long as 276 bytes,
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while the name of the subfile program queue in the third record format can
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only be 10 bytes long.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzakcmstkeyent.htm" title="You type the keyword entries that define display files in positions 45 through 80 (functions).">DDS keyword entries for display files (positions 45 through 80)</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzakcmstdfsfctl.htm" title="Use this record-level keyword to specify that this record format is to be a subfile control record format. This record format must immediately follow the subfile record format.">SFLCTL (Subfile Control) keyword for display files</a></div>
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<div><a href="rzakcmstdfsflnz.htm" title="Use this record-level keyword on the subfile control record format to specify that the i5/OS operating system is to initialize all records in the subfile on an output operation to the subfile control record format (identified by the SFLCTL keyword).">SFLINZ (Subfile Initialize) keyword for display files</a></div>
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<div><a href="rzakcmstdfsfmky.htm" title="Use this field-level keyword on the first field in the subfile record format for a message subfile (Subfile (SFL) and Subfile Message Record (SFLMSGRCD) keywords specified).">SFLMSGKEY (Subfile Message Key) keyword for display files</a></div>
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</div>
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</div>
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