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11<meta name="DC.Title" content="Validating XML schemas" />
12<meta name="abstract" content="Validating an XML schema determines whether the current state of the XML schema file is semantically valid. Any errors will be displayed in the Problems view." />
13<meta name="description" content="Validating an XML schema determines whether the current state of the XML schema file is semantically valid. Any errors will be displayed in the Problems view." />
14<meta content="XML schema files, validating" name="DC.subject" />
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24<title>Validating XML schemas</title>
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syeshind0bdb8e2005-10-27 17:44:14 +000029<h1 class="topictitle1">Validating XML schemas</h1>
kprice159fa582006-05-08 21:30:45 +000030
syeshinf3d0d4b2005-07-27 18:33:03 +000034<div><p>Validating an XML schema determines whether the current state of
35the XML schema file is semantically valid. Any errors will be displayed in
kprice159fa582006-05-08 21:30:45 +000036the Problems view.</p>
38<div class="section"><p>The following instructions were written for the Resource perspective,
39but they will also work in many other perspectives.</p>
40<p>To validate an XML
kpricede20a692008-04-24 00:27:47 +000041schema, complete the following steps:</p>
syeshinf3d0d4b2005-07-27 18:33:03 +000042</div>
kprice159fa582006-05-08 21:30:45 +000043
kprice4873f982007-04-05 03:39:40 +000045<li class="stepexpand"><span>Right-click your file in the Navigator view and click <span class="uicontrol">Validate</span>.</span>
kprice159fa582006-05-08 21:30:45 +000047
48<li class="stepexpand"><span> If validation was not successful, you can refer to the Problems
kpricede20a692008-04-24 00:27:47 +000049view to see what problems were logged. </span> <div class="note"><span class="notetitle">Note:</span> If you receive
50an error message indicating that the Problems view is full, you can increase
51the number of error messages allowed by clicking <span class="menucascade"><span class="uicontrol">Window</span>
52 &gt; <span class="uicontrol">Preferences</span></span> and selecting <span class="menucascade">
53<span class="uicontrol">General</span> &gt; <span class="uicontrol">Markers</span></span>.
54Select the <span class="uicontrol">Use marker limits</span> check box and change the
55number in the <span class="uicontrol">Limit visible items per group</span> field.</div>
syeshinf3d0d4b2005-07-27 18:33:03 +000057</li>
kprice159fa582006-05-08 21:30:45 +000058
syeshinf3d0d4b2005-07-27 18:33:03 +000059</ol>
kprice159fa582006-05-08 21:30:45 +000060
61<div class="section"><p>The XML schema support in the XML schema editor is based on the
62W3C XML Schema Recommendation Specification. The XML Schema specifications
63XML Schema Part 1: Structures and XML Schema Part 2: Datatypes from the W3C
64Web site are used for validation.</p>
65<p>Certain error messages contain a reference
66to the schema constraints listed in Appendix C of the XML Schema Part 1: Structures
67document. Each constraint has a unique name that will be referenced in the
kpricede20a692008-04-24 00:27:47 +000068error message. For example, if you receive an error message with this text: <tt class="sysout">ct-props-correct</tt> and
69you searched in the Structure document for the text, you would find that it
70is for the section "Schema Component Constraint: Complex Type Definition Properties
71Correct". </p>
72<p>You can set up a project's properties so that different types
73of project resources are automatically validated when you save them (this
74is set for all resources by default). From a project's pop-up
75menu select <span class="uicontrol">Properties</span>, then select <span class="uicontrol">Validation</span>.
76Any validators you can run against your project will be listed in the Validation
syeshinf3d0d4b2005-07-27 18:33:03 +000078</div>
kprice159fa582006-05-08 21:30:45 +000079
syeshinf3d0d4b2005-07-27 18:33:03 +000080</div>
kprice43d0c0f2006-05-18 15:56:09 +000082<div><div class="reltasks"><strong>Related tasks</strong><br />
83<div><a href="../topics/tcxmlsch.html" title="You can create an XML schema and then edit it using the XML schema editor. Using the XML schema editor, you can specify element names that indicates which elements are allowed in an XML file, and in which combinations.">Creating XML schemas</a></div>
85<div class="relinfo"><strong>Related information</strong><br />
lmandel79573072006-03-30 03:29:16 +000086<div><a href="../../org.eclipse.jst.j2ee.doc.user/topics/tjval.html" title="General validation information">../../org.eclipse.jst.j2ee.doc.user/topics/tjval.html</a></div>
87<div><a href="" target="_blank" title="See the W3C Web site for more information on XML Schema specifications">XML
88Schema Part 1: Structures</a></div>
89<div><a href="" target="_blank" title="See the W3C Web site for more information on XML Schema specifications">XML
90Schema Part 2: Datatypes</a></div>
syeshinf3d0d4b2005-07-27 18:33:03 +000094</body>