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<title>SchemaValidate Task</title>
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<h2><a name="schemavalidate">SchemaValidate</a></h2>
<h3>Description</h3>

<p>This task validates XML files described by an XML Schema.
The task extends the XmlValidate task with XSD-specific features.</p>
<ol>
<li>The parser is created validating and namespace aware
</li>
<li>Validation is turned on.</li>
<li>and Schema validation is turned on.</li>
<li>Any default schema supplied is used as the no-namespace schema
<li>All nested schema declarations are turned into the list of namespace-url
bindings for schema lookup.
</ol>

Note that nested catalogs are still used for lookup of the URLs given as the
sources of schema documents, so you can still delegate lookup to a catalog, you
just need to list all schema URIs and their URL equivalents.

<p>This task supports the use of nested
  <li><a href="../CoreTypes/xmlcatalog.html"><tt>&lt;xmlcatalog&gt;</tt></a> elements</li>
  <li> <tt>&lt;schema&gt;</tt> elements, that bind a namespace URI to a URL or a
  local filename.
  <li><tt>&lt;dtd&gt;</tt> elements which are used to resolve DTDs and entities.</li>
  <li><tt>&lt;attribute&gt;</tt> elements which are used to set features on the parser.
      These can be any number of
      <a href="http://www.saxproject.org/apidoc/org/xml/sax/package-summary.html#package_description"><tt>http://xml.org/sax/features/</tt></a>
      or other features that your parser may support.</li>
  <li><tt>&lt;property&gt;</tt> elements, containing string properties
</p>

<p>
The task only supports SAX2 or later parsers: it is an error to specify a SAX1
parser. 


<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">the file(s) you want to check. (optionally can use an embedded fileset)</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">defaultSchemaFile</td>
    <td valign="top">
      filename of a no-namespace XSD file to provide the 
      schema for no-namespace XML content.
    </td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">noNamespaceURL</td>
    <td valign="top">
      URL of a no-namespace XSD file to provide the 
      schema for no-namespace XML content.
    </td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">noNamespaceFile</td>
    <td valign="top">
      filename of a no-namespace XSD file to provide the 
      schema for no-namespace XML content.
    </td>
    <td valign="top" align="center">No</td>
  </tr>
  
  <tr>
    <td valign="top">fullchecking</td>
    <td valign="top">
      enable full schema checking. Slow but strict.
    </td>
    <td valign="top" align="center">No - default true</td>
  </tr>
  <tr>
    <td valign="top">lenient</td>
    <td valign="top">
      if true, only check the XML document is well formed
    </td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">classname</td>
    <td valign="top">the parser to use.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">classpathref</td>
    <td valign="top">where to find the parser class. 
    Optionally can use an embedded <tt>&lt;classpath&gt;</tt> element.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">failonerror</td>
    <td valign="top">fails on a error if set to true (defaults to true).</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">warn</td>
    <td valign="top">log parser warn events.</td>
    <td align="center" valign="top">No</td>
  </tr>
</table>

<h3><a name="nested">Nested Elements</a></h3>


<h4>schema</h4>
<p>
Identify the name and location of a schema that may be used in validating
the document(s).
</p>
<table border="1" cellpadding="2" cellspacing="0">
<tr>
  <td width="12%" valign="top"><b>Attribute</b></td>
  <td width="78%" valign="top"><b>Description</b></td>
  <td width="10%" valign="top"><b>Required</b></td>
</tr>
  <tr>
    <td valign="top">namespace</td>
    <td valign="top">URI of the schema namespace</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">url</td>
    <td valign="top">URL of the schema</td>
    <td align="center" valign="top">One of url or file is required</td>
  </tr>
  <tr>
    <td valign="top">file</td>
    <td valign="top">file of the schema</td>
    <td align="center" valign="top">One of url or file is required</td>
  </tr>
</table>

<h4>dtd</h4>
<p>
<tt>&lt;dtd&gt;</tt> is used to specify different locations for DTD resolution.
</p>
<table border="1" cellpadding="2" cellspacing="0">
<tr>
  <td width="12%" valign="top"><b>Attribute</b></td>
  <td width="78%" valign="top"><b>Description</b></td>
  <td width="10%" valign="top"><b>Required</b></td>
</tr>
  <tr>
    <td valign="top">publicId</td>
    <td valign="top">Public ID of the DTD to resolve</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">location</td>
    <td valign="top">Location of the DTD to use, which can be a file,
    a resource, or a URL</td>
    <td align="center" valign="top">Yes</td>
  </tr>
</table>
<h4>xmlcatalog</h4>
<p>The <a href="../CoreTypes/xmlcatalog.html"><tt>&lt;xmlcatalog&gt;</tt></a>
element is used to perform entity resolution.</p>
<h4>attribute</h4>
<p>The <tt>&lt;attribute&gt;</tt> element is used to set parser features.<br>
Features usable with the xerces parser are defined here :
 <a href="http://xml.apache.org/xerces-j/features.html">Setting features</a><br>

SAX features are defined here:
 <a href="http://www.saxproject.org/apidoc/org/xml/sax/package-summary.html#package_description"><tt>http://xml.org/sax/features/</tt></a><br>
 </p>
<table border="1" cellpadding="2" cellspacing="0">
<tr>
  <td width="12%" valign="top"><b>Attribute</b></td>
  <td width="78%" valign="top"><b>Description</b></td>
  <td width="10%" valign="top"><b>Required</b></td>
</tr>
  <tr>
    <td valign="top">name</td>
    <td valign="top">The name of the feature</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">value</td>
    <td valign="top">The boolean value of the feature</td>
    <td align="center" valign="top">Yes</td>
  </tr>
</table>
</p>

<h4>property</h4>
<p>The <tt>&lt;property&gt;</tt> element is used to set properties.
These properties are defined here for the xerces XML parser implementation :
 <a href="http://xml.apache.org/xerces-j/properties.html">XML Parser properties</a>
Properties can be used to set the schema used to validate the XML file.
</p>
<table border="1" cellpadding="2" cellspacing="0">
<tr>
  <td width="12%" valign="top"><b>Attribute</b></td>
  <td width="78%" valign="top"><b>Description</b></td>
  <td width="10%" valign="top"><b>Required</b></td>
</tr>
  <tr>
    <td valign="top">name</td>
    <td valign="top">The name of the feature</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">value</td>
    <td valign="top">The string value of the property</td>
    <td align="center" valign="top">Yes</td>
  </tr>
</table>
</p>


<h3>Examples</h3>
<pre>
&lt;xmlvalidate file="toto.xml"/&gt;
</pre>
Validate toto.xml
<pre>
&lt;xmlvalidate failonerror="no" lenient="yes" warn="yes"
             classname="org.apache.xerces.parsers.SAXParser"&gt;
             classpath="lib/xerces.jar"&gt;
  &lt;fileset dir="src" includes="style/*.xsl"/&gt;
&lt;/xmlvalidate&gt;
</pre>
Validate all .xsl files in src/style, but only warn if there is an error, rather than
halt the build.
<pre>

&lt;xmlvalidate file="struts-config.xml" warn="false"&gt;
  &lt;dtd publicId="-//Apache Software Foundation//DTD Struts Configuration 1.0//EN"
       location="struts-config_1_0.dtd"/&gt;
&lt;/xmlvalidate&gt;
</pre>

Validate a struts configuration, using a local copy of the DTD. 
<pre> 
&lt;xmlvalidate failonerror="no"&gt;
  &lt;fileset dir="${project.dir}" includes="**/*.xml"/&gt;
  &lt;xmlcatalog refid="mycatalog"/&gt;
&lt;/xmlvalidate&gt;
</pre>

Scan all XML files in the project, using a predefined catalog to map URIs to local files.
<pre>
&lt;xmlvalidate failonerror="no"&gt;
  &lt;fileset dir="${project.dir}" includes="**/*.xml"/&gt;
  &lt;xmlcatalog&gt;
       &lt;dtd
         publicId=&quot;-//ArielPartners//DTD XML Article V1.0//EN&quot;
         location=&quot;com/arielpartners/knowledgebase/dtd/article.dtd&quot;/&gt;
  &lt;/xmlcatalog&gt;
&lt;/xmlvalidate&gt;
</pre>
Scan all XML files in the project, using the catalog defined inline.

<pre>
&lt;xmlvalidate failonerror="yes" lenient="no" warn="yes"&gt;
  &lt;fileset dir="xml" includes="**/*.xml"/&gt;
  &lt;attribute name="http://xml.org/sax/features/validation" value="true"/&gt;
  &lt;attribute name="http://apache.org/xml/features/validation/schema"  value="true"/&gt;
  &lt;attribute name="http://xml.org/sax/features/namespaces" value="true"/&gt;
&lt;/xmlvalidate&gt;
</pre>
Validate all .xml files in xml directory with the parser configured to perform schema validation. Note: The parser must support the
<pre>http://apache.org/xml/features/validation/schema</pre> feature.

<br>
<pre>
<!-- Converts path to URL format -->
&lt;pathconvert dirsep="/" property="xsd.file"&gt;
&lt;path&gt;
   &lt;pathelement location="xml/doc.xsd"/&gt;
&lt;/path&gt;
&lt;/pathconvert&gt;

&lt;xmlvalidate file="xml/endpiece-noSchema.xml" lenient="false"
  failonerror="true" warn="true"&gt;
  &lt;attribute name="http://apache.org/xml/features/validation/schema"
  value="true"/&gt;
  &lt;attribute name="http://xml.org/sax/features/namespaces" value="true"/&gt;
  &lt;property
  name="http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation"
  value="${xsd.file}"/&gt;
&lt;/xmlvalidate&gt;
</pre>
<br>
Validate the file xml/endpiece-noSchema.xml against the schema xml/doc.xsd.
<br>
<hr>
<p align="center">Copyright &copy; 2001-2002,2004 The Apache Software Foundation. All rights
Reserved.</p>

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