114 lines
6.0 KiB
HTML
114 lines
6.0 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Field validation specifications" />
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<meta name="abstract" content="The DDS keywords in this topic provide validation checks on input-capable fields on your display." />
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<meta name="description" content="The DDS keywords in this topic provide validation checks on input-capable fields on your display." />
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<meta name="DC.Relation" scheme="URI" content="rbagsdispfiledsgngide.htm" />
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<meta name="DC.Relation" scheme="URI" content="../rzakc/rzakcmstdfrange.htm" />
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<meta name="DC.Relation" scheme="URI" content="../rzakc/rzakcmstdfval.htm" />
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<meta name="DC.Relation" scheme="URI" content="../rzakc/rzakcmstdfcmp.htm" />
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<meta name="DC.Relation" scheme="URI" content="../rzakc/rzakcmstdfcheck.htm" />
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<meta name="DC.Relation" scheme="URI" content="../rzakc/rzakcmstdfchkme.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Identifier" content="rbagsfldvalidspecs" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Field validation specifications</title>
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</head>
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<body id="rbagsfldvalidspecs"><a name="rbagsfldvalidspecs"><!-- --></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">Field validation specifications</h1>
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<div><p>The DDS keywords in this topic provide validation checks on input-capable
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fields on your display.</p>
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<ul><li>RANGE (Range checking)</li>
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<li>VALUES (Values checking)</li>
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<li>CMP and COMP (Comparison)</li>
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<li>CHECK (Check validity, keyboard control and cursor control)</li>
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</ul>
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<p>Using the DDS keywords with any hard-coded values that are language, country,
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or cultural-dependent makes duplication and modification of the
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DDS and the application program necessary.</p>
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<div class="section"><h4 class="sectiontitle">Example: Validation checks</h4><p>An example of field validation
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checks on input-capable fields on your display using the DDS keywords VALUES,
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COMP, and CHECK follows:</p>
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<pre>A field-name length type usage line pos VALUES('Y' 'N')
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or
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A field-name length type usage line pos COMP(EQ 'US$')
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or
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A field-name length type usage line pos CHECK(M10 or M11)
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(Modulus checking)
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or
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A field-name length type usage line pos CHECK(RL)
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(Right-to-left support)</pre>
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<p>Validation checks are provided according
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to the sort sequence defined for the display file at creation time. You can
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use the same DDS source file to create objects for different languages. For
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example, the following command creates a display object tagged with the Latin
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1 sort sequence table:</p>
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<pre>CRTDSPF FILE(name) SRTSEQ(*LANGIDSHR) LANGID(DEU)</pre>
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<p>The
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following specification:</p>
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<pre>A field-name length type usage line pos COMP(EQ 'a')</pre>
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<p>accepts
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all lowercase, uppercase, and accented characters, as defined by the shared-weight
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in the Latin 1 sort sequence.</p>
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<p>In addition, note
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that all the checks specified using those DDS keywords are done by the data
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management function of the operating system. Any error message caused by wrong
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input or handling by the user appears in the language of the operating system.
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This can be the primary language or a secondary language, depending how the
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library list of the job is set up.</p>
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<p>You can override
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this when you use the additional DDS keyword CHKMSGID (Check Message Identifier).
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This keyword allows you to specify your own customized messages and message
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file to be used by the checking routines of the operating system.</p>
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<p>For
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example:</p>
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<pre>A field-name length type usage RANGE(1 999)
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A CHKMSGID(USR1234 [*libl/]APPMSGF [&MSGFLD1])
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A MSGFLD1 length type P TEXT('Message data field')
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and
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ADDMSGD MSGID(USR1234) MSGF(APPTXDENU/APPMSGF)
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MSG('Value &1; is out of range 1 to 999')
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and
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ADDMSGD MSGID(USR1234) MSGF(APPTXDDEU/APPMSGF)</pre>
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<p><samp class="codeph">MSG('Wert &1;
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ist ausserhalb des g</samp> <img src="lu170000.gif" alt="U umlaut character" /> <samp class="codeph">ltigen Bereichs 1 bis 999')</samp></p>
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<p>To use different
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message files of different library names, do not specify a fixed library name.
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You can use a message file for different languages by setting the library
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list when you run the program.</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="rbagsdispfiledsgngide.htm" title="Application panels typically consist of the major elements in this topic.">Display file design</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="../rzakc/rzakcmstdfrange.htm">RANGE (Range) keyword</a></div>
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<div><a href="../rzakc/rzakcmstdfval.htm">VALUES (Values) keyword</a></div>
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<div><a href="../rzakc/rzakcmstdfcmp.htm">CMP (Comparison) keyword</a></div>
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<div><a href="../rzakc/rzakcmstdfcheck.htm">CHECK (Check) keyword</a></div>
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<div><a href="../rzakc/rzakcmstdfchkme.htm">CHKMSGID (Check Message Identifier) keyword</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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