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<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
<li class="level2"><a href="#xml-schema-version">XML Schema Version</a></li>
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<h1 class="title">QXmlSchemaValidator Class Reference</h1>
<!-- $$$QXmlSchemaValidator-brief -->
<p>The QXmlSchemaValidator class validates XML instance documents against a W3C XML Schema. <a href="#details">More...</a></p>
<!-- @@@QXmlSchemaValidator -->
<pre class="cpp"> <span class="preprocessor">#include <QXmlSchemaValidator></span></pre><p><b>Note:</b> All functions in this class are <a href="threads-reentrancy.html#reentrant">reentrant</a>.</p>
<p>This class was introduced in Qt 4.6.</p>
<ul>
<li><a href="qxmlschemavalidator-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#QXmlSchemaValidator">QXmlSchemaValidator</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#QXmlSchemaValidator-2">QXmlSchemaValidator</a></b> ( const QXmlSchema & <i>schema</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#dtor.QXmlSchemaValidator">~QXmlSchemaValidator</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QAbstractMessageHandler * </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#messageHandler">messageHandler</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QXmlNamePool </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#namePool">namePool</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QNetworkAccessManager * </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#networkAccessManager">networkAccessManager</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QXmlSchema </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#schema">schema</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#setMessageHandler">setMessageHandler</a></b> ( QAbstractMessageHandler * <i>handler</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#setNetworkAccessManager">setNetworkAccessManager</a></b> ( QNetworkAccessManager * <i>manager</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#setSchema">setSchema</a></b> ( const QXmlSchema & <i>schema</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#setUriResolver">setUriResolver</a></b> ( const QAbstractUriResolver * <i>resolver</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> const QAbstractUriResolver * </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#uriResolver">uriResolver</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#validate">validate</a></b> ( const QUrl & <i>source</i> ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#validate-2">validate</a></b> ( QIODevice * <i>source</i>, const QUrl & <i>documentUri</i> = QUrl() ) const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qxmlschemavalidator.html#validate-3">validate</a></b> ( const QByteArray & <i>data</i>, const QUrl & <i>documentUri</i> = QUrl() ) const</td></tr>
</table>
<a name="details"></a>
<!-- $$$QXmlSchemaValidator-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The QXmlSchemaValidator class validates XML instance documents against a W3C XML Schema.</p>
<p>The QXmlSchemaValidator class loads, parses an XML instance document and validates it against a W3C XML Schema that has been compiled with <a href="qxmlschema.html">QXmlSchema</a>.</p>
<p>The following example shows how to load a XML Schema from a local file, check whether it is a valid schema document and use it for validation of an XML instance document:</p>
<pre class="cpp"> <span class="type"><a href="qurl.html">QUrl</a></span> schemaUrl(<span class="string">"file:///home/user/schema.xsd"</span>);
<span class="type"><a href="qxmlschema.html">QXmlSchema</a></span> schema;
schema<span class="operator">.</span>load(schemaUrl);
<span class="keyword">if</span> (schema<span class="operator">.</span>isValid()) {
<span class="type"><a href="qfile.html">QFile</a></span> file(<span class="string">"test.xml"</span>);
file<span class="operator">.</span>open(<span class="type"><a href="qiodevice.html">QIODevice</a></span><span class="operator">::</span>ReadOnly);
<span class="type">QXmlSchemaValidator</span> validator(schema);
<span class="keyword">if</span> (validator<span class="operator">.</span>validate(<span class="operator">&</span>file<span class="operator">,</span> <span class="type"><a href="qurl.html">QUrl</a></span><span class="operator">::</span>fromLocalFile(file<span class="operator">.</span>fileName())))
<a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"instance document is valid"</span>;
<span class="keyword">else</span>
<a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"instance document is invalid"</span>;
}</pre>
<a name="xml-schema-version"></a>
<h3>XML Schema Version</h3>
<p>This class implements schema validation according to the <a href="http://www.w3.org/XML/Schema">XML Schema</a> 1.0 specification.</p>
</div>
<p><b>See also </b><a href="qxmlschema.html">QXmlSchema</a> and <a href="xmlpatterns-schema.html">XML Schema Validation Example</a>.</p>
<!-- @@@QXmlSchemaValidator -->
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QXmlSchemaValidator[overload1]$$$QXmlSchemaValidator -->
<h3 class="fn"><a name="QXmlSchemaValidator"></a>QXmlSchemaValidator::<span class="name">QXmlSchemaValidator</span> ()</h3>
<p>Constructs a schema validator. The schema used for validation must be referenced in the XML instance document via the <tt>xsi:schemaLocation</tt> or <tt>xsi:noNamespaceSchemaLocation</tt> attribute.</p>
<!-- @@@QXmlSchemaValidator -->
<!-- $$$QXmlSchemaValidator$$$QXmlSchemaValidatorconstQXmlSchema& -->
<h3 class="fn"><a name="QXmlSchemaValidator-2"></a>QXmlSchemaValidator::<span class="name">QXmlSchemaValidator</span> ( const <span class="type"><a href="qxmlschema.html">QXmlSchema</a></span> & <i>schema</i> )</h3>
<p>Constructs a schema validator that will use <i>schema</i> for validation. If an empty <a href="qxmlschema.html">QXmlSchema</a> schema is passed to the validator, the schema used for validation must be referenced in the XML instance document via the <tt>xsi:schemaLocation</tt> or <tt>xsi:noNamespaceSchemaLocation</tt> attribute.</p>
<!-- @@@QXmlSchemaValidator -->
<!-- $$$~QXmlSchemaValidator[overload1]$$$~QXmlSchemaValidator -->
<h3 class="fn"><a name="dtor.QXmlSchemaValidator"></a>QXmlSchemaValidator::<span class="name">~QXmlSchemaValidator</span> ()</h3>
<p>Destroys this <a href="qxmlschemavalidator.html">QXmlSchemaValidator</a>.</p>
<!-- @@@~QXmlSchemaValidator -->
<!-- $$$messageHandler[overload1]$$$messageHandler -->
<h3 class="fn"><a name="messageHandler"></a><span class="type"><a href="qabstractmessagehandler.html">QAbstractMessageHandler</a></span> * QXmlSchemaValidator::<span class="name">messageHandler</span> () const</h3>
<p>Returns the message handler that handles parsing and validation messages for this <a href="qxmlschemavalidator.html">QXmlSchemaValidator</a>.</p>
<p><b>See also </b><a href="qxmlschemavalidator.html#setMessageHandler">setMessageHandler</a>().</p>
<!-- @@@messageHandler -->
<!-- $$$namePool[overload1]$$$namePool -->
<h3 class="fn"><a name="namePool"></a><span class="type"><a href="qxmlnamepool.html">QXmlNamePool</a></span> QXmlSchemaValidator::<span class="name">namePool</span> () const</h3>
<p>Returns the name pool used by this <a href="qxmlschemavalidator.html">QXmlSchemaValidator</a> for constructing <a href="qxmlname.html">names</a>. There is no setter for the name pool, because mixing name pools causes errors due to name confusion.</p>
<!-- @@@namePool -->
<!-- $$$networkAccessManager[overload1]$$$networkAccessManager -->
<h3 class="fn"><a name="networkAccessManager"></a><span class="type"><a href="qnetworkaccessmanager.html">QNetworkAccessManager</a></span> * QXmlSchemaValidator::<span class="name">networkAccessManager</span> () const</h3>
<p>Returns the network manager, or 0 if it has not been set.</p>
<p><b>See also </b><a href="qxmlschemavalidator.html#setNetworkAccessManager">setNetworkAccessManager</a>().</p>
<!-- @@@networkAccessManager -->
<!-- $$$schema[overload1]$$$schema -->
<h3 class="fn"><a name="schema"></a><span class="type"><a href="qxmlschema.html">QXmlSchema</a></span> QXmlSchemaValidator::<span class="name">schema</span> () const</h3>
<p>Returns the schema that is used for validation.</p>
<p><b>See also </b><a href="qxmlschemavalidator.html#setSchema">setSchema</a>().</p>
<!-- @@@schema -->
<!-- $$$setMessageHandler[overload1]$$$setMessageHandlerQAbstractMessageHandler* -->
<h3 class="fn"><a name="setMessageHandler"></a><span class="type">void</span> QXmlSchemaValidator::<span class="name">setMessageHandler</span> ( <span class="type"><a href="qabstractmessagehandler.html">QAbstractMessageHandler</a></span> * <i>handler</i> )</h3>
<p>Changes the <a href="qabstractmessagehandler.html">message handler</a> for this <a href="qxmlschemavalidator.html">QXmlSchemaValidator</a> to <i>handler</i>. The schema validator sends all parsing and validation messages to this message handler. <a href="qxmlschemavalidator.html">QXmlSchemaValidator</a> does not take ownership of <i>handler</i>.</p>
<p>Normally, the default message handler is sufficient. It writes compile and validation messages to <i>stderr</i>. The default message handler includes color codes if <i>stderr</i> can render colors.</p>
<p>When <a href="qxmlschemavalidator.html">QXmlSchemaValidator</a> calls <a href="qabstractmessagehandler.html#message">QAbstractMessageHandler::message</a>(), the arguments are as follows:</p>
<table class="generic">
<thead><tr class="qt-style"><th >message() argument</th><th >Semantics</th></tr></thead>
<tr valign="top" class="odd"><td ><a href="qtglobal.html#QtMsgType-enum">QtMsgType</a> type</td><td >Only <a href="qtglobal.html#QtMsgType-enum">QtWarningMsg</a> and <a href="qtglobal.html#QtMsgType-enum">QtFatalMsg</a> are used. The former identifies a warning, while the latter identifies an error.</td></tr>
<tr valign="top" class="even"><td >const <a href="qstring.html">QString</a> & description</td><td >An XHTML document which is the actual message. It is translated into the current language.</td></tr>
<tr valign="top" class="odd"><td >const <a href="qurl.html">QUrl</a> &identifier</td><td >Identifies the error with a URI, where the fragment is the error code, and the rest of the URI is the error namespace.</td></tr>
<tr valign="top" class="even"><td >const <a href="qsourcelocation.html">QSourceLocation</a> & sourceLocation</td><td >Identifies where the error occurred.</td></tr>
</table>
<p><b>See also </b><a href="qxmlschemavalidator.html#messageHandler">messageHandler</a>().</p>
<!-- @@@setMessageHandler -->
<!-- $$$setNetworkAccessManager[overload1]$$$setNetworkAccessManagerQNetworkAccessManager* -->
<h3 class="fn"><a name="setNetworkAccessManager"></a><span class="type">void</span> QXmlSchemaValidator::<span class="name">setNetworkAccessManager</span> ( <span class="type"><a href="qnetworkaccessmanager.html">QNetworkAccessManager</a></span> * <i>manager</i> )</h3>
<p>Sets the network manager to <i>manager</i>. <a href="qxmlschemavalidator.html">QXmlSchemaValidator</a> does not take ownership of <i>manager</i>.</p>
<p><b>See also </b><a href="qxmlschemavalidator.html#networkAccessManager">networkAccessManager</a>().</p>
<!-- @@@setNetworkAccessManager -->
<!-- $$$setSchema[overload1]$$$setSchemaconstQXmlSchema& -->
<h3 class="fn"><a name="setSchema"></a><span class="type">void</span> QXmlSchemaValidator::<span class="name">setSchema</span> ( const <span class="type"><a href="qxmlschema.html">QXmlSchema</a></span> & <i>schema</i> )</h3>
<p>Sets the <i>schema</i> that shall be used for further validation. If the schema is empty, the schema used for validation must be referenced in the XML instance document via the <tt>xsi:schemaLocation</tt> or <tt>xsi:noNamespaceSchemaLocation</tt> attribute.</p>
<p><b>See also </b><a href="qxmlschemavalidator.html#schema">schema</a>().</p>
<!-- @@@setSchema -->
<!-- $$$setUriResolver[overload1]$$$setUriResolverconstQAbstractUriResolver* -->
<h3 class="fn"><a name="setUriResolver"></a><span class="type">void</span> QXmlSchemaValidator::<span class="name">setUriResolver</span> ( const <span class="type"><a href="qabstracturiresolver.html">QAbstractUriResolver</a></span> * <i>resolver</i> )</h3>
<p>Sets the URI resolver to <i>resolver</i>. <a href="qxmlschemavalidator.html">QXmlSchemaValidator</a> does not take ownership of <i>resolver</i>.</p>
<p><b>See also </b><a href="qxmlschemavalidator.html#uriResolver">uriResolver</a>().</p>
<!-- @@@setUriResolver -->
<!-- $$$uriResolver[overload1]$$$uriResolver -->
<h3 class="fn"><a name="uriResolver"></a>const <span class="type"><a href="qabstracturiresolver.html">QAbstractUriResolver</a></span> * QXmlSchemaValidator::<span class="name">uriResolver</span> () const</h3>
<p>Returns the schema's URI resolver. If no URI resolver has been set, <a href="qtxmlpatterns.html">QtXmlPatterns</a> will use the URIs in instance documents as they are.</p>
<p>The URI resolver provides a level of abstraction, or <i>polymorphic URIs</i>. A resolver can rewrite <i>logical</i> URIs to physical ones, or it can translate obsolete or invalid URIs to valid ones.</p>
<p>When <a href="qtxmlpatterns.html">QtXmlPatterns</a> calls <a href="qabstracturiresolver.html#resolve">QAbstractUriResolver::resolve</a>() the absolute URI is the URI mandated by the schema specification, and the relative URI is the URI specified by the user.</p>
<p><b>See also </b><a href="qxmlschemavalidator.html#setUriResolver">setUriResolver</a>().</p>
<!-- @@@uriResolver -->
<!-- $$$validate[overload1]$$$validateconstQUrl& -->
<h3 class="fn"><a name="validate"></a><span class="type">bool</span> QXmlSchemaValidator::<span class="name">validate</span> ( const <span class="type"><a href="qurl.html">QUrl</a></span> & <i>source</i> ) const</h3>
<p>Validates the XML instance document read from <i>source</i> against the schema.</p>
<p>Returns <tt>true</tt> if the XML instance document is valid according to the schema, <tt>false</tt> otherwise.</p>
<p>Example:</p>
<pre class="cpp"> <span class="keyword">const</span> <span class="type"><a href="qxmlschema.html">QXmlSchema</a></span> schema <span class="operator">=</span> getSchema();
<span class="keyword">const</span> <span class="type"><a href="qurl.html">QUrl</a></span> url(<span class="string">"http://www.schema-example.org/test.xml"</span>);
<span class="type"><a href="qxmlschemavalidator.html">QXmlSchemaValidator</a></span> validator(schema);
<span class="keyword">if</span> (validator<span class="operator">.</span>validate(url))
<a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"instance document is valid"</span>;
<span class="keyword">else</span>
<a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"instance document is invalid"</span>;</pre>
<!-- @@@validate -->
<!-- $$$validate$$$validateQIODevice*constQUrl& -->
<h3 class="fn"><a name="validate-2"></a><span class="type">bool</span> QXmlSchemaValidator::<span class="name">validate</span> ( <span class="type"><a href="qiodevice.html">QIODevice</a></span> * <i>source</i>, const <span class="type"><a href="qurl.html">QUrl</a></span> & <i>documentUri</i> = QUrl() ) const</h3>
<p>Validates the XML instance document read from <i>source</i> with the given <i>documentUri</i> against the schema.</p>
<p>Returns <tt>true</tt> if the XML instance document is valid according to the schema, <tt>false</tt> otherwise.</p>
<p>Example:</p>
<pre class="cpp"> <span class="keyword">const</span> <span class="type"><a href="qxmlschema.html">QXmlSchema</a></span> schema <span class="operator">=</span> getSchema();
<span class="type"><a href="qfile.html">QFile</a></span> file(<span class="string">"test.xml"</span>);
file<span class="operator">.</span>open(<span class="type"><a href="qiodevice.html">QIODevice</a></span><span class="operator">::</span>ReadOnly);
<span class="type"><a href="qxmlschemavalidator.html">QXmlSchemaValidator</a></span> validator(schema);
<span class="keyword">if</span> (validator<span class="operator">.</span>validate(<span class="operator">&</span>file<span class="operator">,</span> <span class="type"><a href="qurl.html">QUrl</a></span><span class="operator">::</span>fromLocalFile(file<span class="operator">.</span>fileName())))
<a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"instance document is valid"</span>;
<span class="keyword">else</span>
<a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"instance document is invalid"</span>;</pre>
<!-- @@@validate -->
<!-- $$$validate$$$validateconstQByteArray&constQUrl& -->
<h3 class="fn"><a name="validate-3"></a><span class="type">bool</span> QXmlSchemaValidator::<span class="name">validate</span> ( const <span class="type"><a href="qbytearray.html">QByteArray</a></span> & <i>data</i>, const <span class="type"><a href="qurl.html">QUrl</a></span> & <i>documentUri</i> = QUrl() ) const</h3>
<p>Validates the XML instance document read from <i>data</i> with the given <i>documentUri</i> against the schema.</p>
<p>Returns <tt>true</tt> if the XML instance document is valid according to the schema, <tt>false</tt> otherwise.</p>
<p>Example:</p>
<pre class="cpp"> <span class="keyword">const</span> <span class="type"><a href="qxmlschema.html">QXmlSchema</a></span> schema <span class="operator">=</span> getSchema();
<span class="type"><a href="qbytearray.html">QByteArray</a></span> data(<span class="string">"<?xml version=\"1.0\" encoding=\"UTF-8\"?>"</span>
<span class="string">"<test></test>"</span>);
<span class="type"><a href="qbuffer.html">QBuffer</a></span> buffer(<span class="operator">&</span>data);
buffer<span class="operator">.</span>open(<span class="type"><a href="qiodevice.html">QIODevice</a></span><span class="operator">::</span>ReadOnly);
<span class="type"><a href="qxmlschemavalidator.html">QXmlSchemaValidator</a></span> validator(schema);
<span class="keyword">if</span> (validator<span class="operator">.</span>validate(<span class="operator">&</span>buffer))
<a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"instance document is valid"</span>;
<span class="keyword">else</span>
<a href="qtglobal.html#qDebug">qDebug</a>() <span class="operator"><</span><span class="operator"><</span> <span class="string">"instance document is invalid"</span>;</pre>
<!-- @@@validate -->
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