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Breadcrumbs go here --> <li>Working with the DOM Tree</li> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <link rel="prev" href="xml-sax.html" /> <link rel="next" href="xmlprocessing.html" /> <p class="naviNextPrevious headerNavi"> <a class="prevPage" href="xml-sax.html">The SAX interface</a> <a class="nextPage" href="xmlprocessing.html">XQuery/XPath and XML Schema</a> </p><p/> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#introduction-to-dom">Introduction to DOM</a></li> </ul> </div> <h1 class="title">Working with the DOM Tree</h1> <span class="subtitle"></span> <!-- $$$xml-dom.tml-description --> <div class="descr"> <a name="details"></a> <a name="dom"></a><p>DOM Level 2 is a W3C Recommendation for XML interfaces that maps the constituents of an XML document to a tree structure. The specification of DOM Level 2 can be found at <a href="http://www.w3.org/DOM/">http://www.w3.org/DOM/</a>.</p> <a name="domintro"></a><a name="introduction-to-dom"></a> <h2>Introduction to DOM</h2> <p>DOM provides an interface to access and change the content and structure of an XML file. It makes a hierarchical view of the document (a tree view). Thus -- in contrast to the SAX2 interface -- an object model of the document is resident in memory after parsing which makes manipulation easy.</p> <p>All DOM nodes in the document tree are subclasses of <a href="qdomnode.html">QDomNode</a>. The document itself is represented as a <a href="qdomdocument.html">QDomDocument</a> object.</p> <p>Here are the available node classes and their potential child classes:</p> <ul> <li><a href="qdomdocument.html">QDomDocument</a>: Possible children are<ul> <li><a href="qdomelement.html">QDomElement</a> (at most one)</li> <li><a href="qdomprocessinginstruction.html">QDomProcessingInstruction</a></li> <li><a href="qdomcomment.html">QDomComment</a></li> <li><a href="qdomdocumenttype.html">QDomDocumentType</a></li> </ul> </li> <li><a href="qdomdocumentfragment.html">QDomDocumentFragment</a>: Possible children are<ul> <li><a href="qdomelement.html">QDomElement</a></li> <li><a href="qdomprocessinginstruction.html">QDomProcessingInstruction</a></li> <li><a href="qdomcomment.html">QDomComment</a></li> <li><a href="qdomtext.html">QDomText</a></li> <li><a href="qdomcdatasection.html">QDomCDATASection</a></li> <li><a href="qdomentityreference.html">QDomEntityReference</a></li> </ul> </li> <li><a href="qdomdocumenttype.html">QDomDocumentType</a>: No children</li> <li><a href="qdomentityreference.html">QDomEntityReference</a>: Possible children are<ul> <li><a href="qdomelement.html">QDomElement</a></li> <li><a href="qdomprocessinginstruction.html">QDomProcessingInstruction</a></li> <li><a href="qdomcomment.html">QDomComment</a></li> <li><a href="qdomtext.html">QDomText</a></li> <li><a href="qdomcdatasection.html">QDomCDATASection</a></li> <li><a href="qdomentityreference.html">QDomEntityReference</a></li> </ul> </li> <li><a href="qdomelement.html">QDomElement</a>: Possible children are<ul> <li><a href="qdomelement.html">QDomElement</a></li> <li><a href="qdomtext.html">QDomText</a></li> <li><a href="qdomcomment.html">QDomComment</a></li> <li><a href="qdomprocessinginstruction.html">QDomProcessingInstruction</a></li> <li><a href="qdomcdatasection.html">QDomCDATASection</a></li> <li><a href="qdomentityreference.html">QDomEntityReference</a></li> </ul> </li> <li><a href="qdomattr.html">QDomAttr</a>: Possible children are<ul> <li><a href="qdomtext.html">QDomText</a></li> <li><a href="qdomentityreference.html">QDomEntityReference</a></li> </ul> </li> <li><a href="qdomprocessinginstruction.html">QDomProcessingInstruction</a>: No children</li> <li><a href="qdomcomment.html">QDomComment</a>: No children</li> <li><a href="qdomtext.html">QDomText</a>: No children</li> <li><a href="qdomcdatasection.html">QDomCDATASection</a>: No children</li> <li><a href="qdomentity.html">QDomEntity</a>: Possible children are<ul> <li><a href="qdomelement.html">QDomElement</a></li> <li><a href="qdomprocessinginstruction.html">QDomProcessingInstruction</a></li> <li><a href="qdomcomment.html">QDomComment</a></li> <li><a href="qdomtext.html">QDomText</a></li> <li><a href="qdomcdatasection.html">QDomCDATASection</a></li> <li><a href="qdomentityreference.html">QDomEntityReference</a></li> </ul> </li> <li><a href="qdomnotation.html">QDomNotation</a>: No children</li> </ul> <p>With <a href="qdomnodelist.html">QDomNodeList</a> and <a href="qdomnamednodemap.html">QDomNamedNodeMap</a> two collection classes are provided: <a href="qdomnodelist.html">QDomNodeList</a> is a list of nodes, and <a href="qdomnamednodemap.html">QDomNamedNodeMap</a> is used to handle unordered sets of nodes (often used for attributes).</p> <p>The <a href="qdomimplementation.html">QDomImplementation</a> class allows the user to query features of the DOM implementation.</p> <p>To get started please refer to the <a href="qdomdocument.html">QDomDocument</a> documentation. You might also want to take a look at the <a href="xml-dombookmarks.html">DOM Bookmarks example</a>, which illustrates how to read and write an XML bookmark file (XBEL) using DOM.</p> </div> <!-- @@@xml-dom.tml --> <p class="naviNextPrevious footerNavi"> <a class="prevPage" href="xml-sax.html">The SAX interface</a> <a class="nextPage" href="xmlprocessing.html">XQuery/XPath and XML Schema</a> </p> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd. 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