145 lines
9.6 KiB
HTML
145 lines
9.6 KiB
HTML
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="INZINP (Initialize Input) keyword for display files" />
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<meta name="abstract" content="Use this record-level keyword to initialize input/output fields without necessarily sending the initialized data to the display when the PUTOVR and ERASEINP(*ALL) keywords are both in effect." />
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<meta name="description" content="Use this record-level keyword to initialize input/output fields without necessarily sending the initialized data to the display when the PUTOVR and ERASEINP(*ALL) keywords are both in effect." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2001, 2006" />
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<title>INZINP (Initialize Input) keyword for display files</title>
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<body id="rzakcmstdfinz"><a name="rzakcmstdfinz"><!-- --></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">INZINP (Initialize Input) keyword for display files</h1>
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<div><p>Use this record-level keyword to initialize input/output fields
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without necessarily sending the initialized data to the display when the PUTOVR
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and ERASEINP(*ALL) keywords are both in effect.</p>
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<p>This keyword has no parameters.</p>
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<p>INZINP is particularly useful for applications that perform data entry
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from remote workstations. It can reduce line traffic between the system unit
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and the remote workstation.</p>
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<p>The following steps describe how this keyword is used:</p>
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<ol><li>An output operation displays an input/output field for which the OVRDTA
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or OVRATR keyword is in effect. The system initializes the input save area
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to the program value of the field. For example, if the program sets NAME1
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to the name Bob, the input save area contains the name Bob.</li>
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<li>An input operation places data from the workstation in an input buffer.
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If the workstation user did not key into the input-capable field and the DSPATR(MDT)
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keyword is not in effect for the field, the field does not return data from
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the workstation. The system retrieves data from the input save area and places
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it in the input buffer for use by the program. Thus, all input-capable fields
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have data in the input buffer, either from the workstation or from the input
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save area.</li>
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<li>On another output operation, the following cases might occur:<ul><li>If the INZINP and OVRDTA keywords are not in effect,
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the input save area is unchanged, even if the program changed the field value.
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For example, if the program changes the field value to the name Tom, the input
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save area will still have either the value entered by the workstation user
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or the name Bob, the earlier program value.</li>
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<li>If INZINP is in effect, the input save area will have
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the current program value. The current program value is sent to the display
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for fields for which the OVRDTA keyword is in effect. <p>If the OVRDTA keyword
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is not in effect on an output operation, the program must clear the output
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buffer for the fields with the OVRDTA keyword specified to ensure that the
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input save area matches the fields on the display (which are all blanks after
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the output operation).</p>
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</li>
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</ul>
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</li>
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</ol>
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<div class="note"><span class="notetitle">Note:</span> If the ERASEINP(*ALL) keyword is in effect for the output operation,
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input-capable fields are cleared at the display device (on the display), but
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the input save area is not cleared. For the contents of the input save area,
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see <a href="#rzakcmstdfinz__exoutin">Table 1</a> and <a href="#rzakcmstdfinz__exinout">Table 2</a>.
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Fields with the DFT keyword specified are initialized with the value specified
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for the DFT keyword even if the fields are not selected for display. The values
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are maintained unless the application program selects the fields for display,
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then changes their data values. This keyword requires the PUTOVR, OVERLAY,
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and ERASEINP(*ALL) keywords to be specified at the record level.</div>
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<p>The following tables show the effect of the ERASEINP(*ALL) and PUTOVR keywords
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with and without the INZINP keyword.</p>
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<div class="tablenoborder"><a name="rzakcmstdfinz__exoutin"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rzakcmstdfinz__exoutin" width="100%" frame="hsides" border="0" rules="none"><caption>Table 1. INZINP Input/output
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fields</caption><thead align="left"><tr><th align="left" valign="bottom" width="33.33333333333333%" id="d0e51">OVRATR or OVRDTA keyword</th>
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<th align="left" valign="bottom" width="33.33333333333333%" id="d0e53">INZINP keyword</th>
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<th align="left" valign="bottom" width="33.33333333333333%" id="d0e55">Contents of input save area</th>
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</tr>
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</thead>
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<tbody><tr><td align="left" valign="top" width="33.33333333333333%" headers="d0e51 ">Not specified</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e53 ">Does not apply</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e55 ">Previous contents</td>
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</tr>
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<tr><td align="left" valign="top" width="33.33333333333333%" headers="d0e51 ">Specified but not in effect</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e53 ">Specified but not in effect</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e55 ">Previous contents</td>
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</tr>
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<tr><td align="left" valign="top" width="33.33333333333333%" headers="d0e51 ">Specified but not in effect</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e53 ">Specified and in effect</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e55 ">Program value (not sent to display)</td>
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</tr>
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<tr><td align="left" valign="top" width="33.33333333333333%" headers="d0e51 ">OVRATR specified and in effect</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e53 ">Does not apply</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e55 ">Program value (also sent to display)</td>
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</tr>
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<tr><td align="left" valign="top" width="33.33333333333333%" headers="d0e51 ">OVRATR specified and in effect; OVRDTA not
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specified or not in effect</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e53 ">Does not apply</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e55 ">Previous contents (not sent to display)</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="tablenoborder"><a name="rzakcmstdfinz__exinout"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rzakcmstdfinz__exinout" width="100%" frame="hsides" border="0" rules="none"><caption>Table 2. INZINP input-only
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fields</caption><thead align="left"><tr><th align="left" valign="bottom" width="33.33333333333333%" id="d0e102">OVRATR keyword</th>
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<th align="left" valign="bottom" width="33.33333333333333%" id="d0e104">INZINP keyword</th>
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<th align="left" valign="bottom" width="33.33333333333333%" id="d0e106">Contents of input save area</th>
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</tr>
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</thead>
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<tbody><tr><td align="left" valign="top" width="33.33333333333333%" headers="d0e102 ">Not specified</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e104 ">Does not apply</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e106 ">Previous contents</td>
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</tr>
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<tr><td align="left" valign="top" width="33.33333333333333%" headers="d0e102 ">Specified and in effect</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e104 ">Does not apply</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e106 ">Previous contents</td>
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</tr>
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<tr><td align="left" valign="top" width="33.33333333333333%" headers="d0e102 ">Specified but not in effect</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e104 ">Does not apply</td>
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<td align="left" valign="top" width="33.33333333333333%" headers="d0e106 "><p>Character fields: blanks <br />
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Numeric fields: zeros</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzakcmstdfinzeraseinp.htm">ERASEINP(*ALL) keyword</a></strong><br />
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Follow the instructions in this topic to set the input save area to blanks and zeros to match the fields cleared at the workstation by the ERASEINP(*ALL) keyword.</li>
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</ul>
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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>
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</body>
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</html>
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