<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <title>Soprano.Node</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <link rel="stylesheet" type="text/css" href="../common/doxygen.css" /> <link rel="stylesheet" media="screen" type="text/css" title="KDE Colors" href="../common/kde.css" /> </head> <body> <div id="container"> <div id="header"> <div id="header_top"> <div> <div> <img alt ="" src="../common/top-kde.jpg"/> KDE 4.9 PyKDE API Reference </div> </div> </div> <div id="header_bottom"> <div id="location"> <ul> <li>KDE's Python API</li> </ul> </div> <div id="menu"> <ul> <li><a href="../modules.html">Overview</a></li> <li><a href="http://techbase.kde.org/Development/Languages/Python">PyKDE Home</a></li> <li><a href="http://kde.org/family/">Sitemap</a></li> <li><a href="http://kde.org/contact/">Contact Us</a></li> </ul> </div> </div> </div> <div id="body_wrapper"> <div id="body"> <div id="right"> <div class="content"> <div id="main"> <div class="clearer"> </div> <h1>Node Class Reference</h1> <code>from PyKDE4.soprano import *</code> <p> Namespace: <a href="../soprano/Soprano.html">Soprano</a><br /> <h2>Detailed Description</h2> <p>\class Node node.h Soprano/Node </p> <p> A Node represents one RDF resource. </p> <p> Nodes are the cornerstone of RDF data in %Soprano. Four Nodes form one Statement and a Model is essentially a set of Statements. </p> <p> A Node can have one of four types: EmptyNode, ResourceNode, LiteralNode, and BlankNode. Resource nodes are identified through their URI (uri()), literal nodes have a LiteralValue (literal()), and blank nodes have a string identifier. </p> <p> Empty nodes can be used as wildcards in methods such as Model.listStatements. </p> <p> <dl class="author" compact><dt><b>Author:</b></dt><dd> Daniele Galdi <daniele.galdi@gmail.com><br>Sebastian Trueg <trueg@kde.org> </dd></dl> </p> <table border="0" cellpadding="0" cellspacing="0"><tr><td colspan="2"><br><h2>Enumerations</h2></td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="#N3ParserFlag">N3ParserFlag</a> </td><td class="memItemRight" valign="bottom">{ NoFlags, StrictLiteralTypes, StrictUris, IgnorePrefixes }</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="#Type">Type</a> </td><td class="memItemRight" valign="bottom">{ EmptyNode, ResourceNode, LiteralNode, BlankNode }</td></tr> <tr><td colspan="2"><br><h2>Methods</h2></td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Node">__init__</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Node">__init__</a> (self, QUrl uri)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Node">__init__</a> (self, QString id)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Node">__init__</a> (self, <a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> value)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Node">__init__</a> (self, <a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> value, QString language)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#Node">__init__</a> (self, <a href="../soprano/Soprano.Node.html">Soprano.Node</a> other)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">QUrl </td><td class="memItemRight" valign="bottom"><a class="el" href="#dataType">dataType</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#identifier">identifier</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#isBlank">isBlank</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#isEmpty">isEmpty</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#isLiteral">isLiteral</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#isResource">isResource</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#isValid">isValid</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#language">language</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#literal">literal</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#matches">matches</a> (self, <a href="../soprano/Soprano.Node.html">Soprano.Node</a> other)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#operator !=">operator !=</a> (self, <a href="../soprano/Soprano.Node.html">Soprano.Node</a> other)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#operator ==">operator ==</a> (self, <a href="../soprano/Soprano.Node.html">Soprano.Node</a> other)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#operator ==">operator ==</a> (self, QUrl uri)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#operator ==">operator ==</a> (self, <a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> other)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#toN3">toN3</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#toString">toString</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../soprano/Soprano.Node.html#Type">Soprano.Node.Type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#type">type</a> (self)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">QUrl </td><td class="memItemRight" valign="bottom"><a class="el" href="#uri">uri</a> (self)</td></tr> <tr><td colspan="2"><br><h2>Static Methods</h2></td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#blankToN3">blankToN3</a> (QString blank)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#createBlankNode">createBlankNode</a> (QString id)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#createEmptyNode">createEmptyNode</a> ()</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#createLiteralNode">createLiteralNode</a> (<a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> value)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#createLiteralNode">createLiteralNode</a> (<a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> value, QString language)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#createResourceNode">createResourceNode</a> (QUrl uri)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#fromN3">fromN3</a> (QString n3, <a href="../soprano/Soprano.Node.html">Soprano.Node.N3ParserFlags</a> flags=Soprano.Node.NoFlags)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#fromN3Stream">fromN3Stream</a> (QTextStream stream, <a href="../soprano/Soprano.Node.html">Soprano.Node.N3ParserFlags</a> flags=Soprano.Node.NoFlags)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#literalToN3">literalToN3</a> (<a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> literal)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">QString </td><td class="memItemRight" valign="bottom"><a class="el" href="#resourceToN3">resourceToN3</a> (QUrl resource)</td></tr> </table> <hr><h2>Method Documentation</h2><a class="anchor" name="Node"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">__init__</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p>Default costructor. Creates an empty node. </p> <p> \sa createEmptyNode() </p></div></div><a class="anchor" name="Node"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">__init__</td> <td>(</td> <td class="paramtype"> <em>self</em>, </td> <td class="paramname"></td> </tr><tr> <td class="memname"></td> <td></td> <td class="paramtype">QUrl </td> <td class="paramname"><em>uri</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Creates a resource node. </p> <p> </p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td></td><td valign="top"><em>uri</em> </td><td> The URI of the node. If empty the type will be ignored and an empty node will be created. </td></tr> </table></dl> <p> \sa createResourceNode() </p></div></div><a class="anchor" name="Node"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">__init__</td> <td>(</td> <td class="paramtype"> <em>self</em>, </td> <td class="paramname"></td> </tr><tr> <td class="memname"></td> <td></td> <td class="paramtype">QString </td> <td class="paramname"><em>id</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Creates a blank node. </p> <p> </p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td></td><td valign="top"><em>id</em> </td><td> An identifier for the blank node. </td></tr> </table></dl> <p> \sa createBlankNode() </p></div></div><a class="anchor" name="Node"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">__init__</td> <td>(</td> <td class="paramtype"> <em>self</em>, </td> <td class="paramname"></td> </tr><tr> <td class="memname"></td> <td></td> <td class="paramtype"><a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> </td> <td class="paramname"><em>value</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Creates a literal node. </p> <p> </p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td></td><td valign="top"><em>value</em> </td><td> The value of a node. If empty the node will become an empty node. </td></tr> </table></dl> <p> \sa createLiteralNode() </p> <p> <dl class="since" compact><dt><b>Since:</b></dt><dd> 2.3 </dd></dl> </p></div></div><a class="anchor" name="Node"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">__init__</td> <td>(</td> <td class="paramtype"> <em>self</em>, </td> <td class="paramname"></td> </tr><tr> <td class="memname"></td> <td></td> <td class="paramtype"><a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> </td> <td class="paramname"><em>value</em>, </td> </tr> <tr> <td class="memname"></td> <td></td> <td class="paramtype">QString </td> <td class="paramname"><em>language</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"></div></div><a class="anchor" name="Node"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">__init__</td> <td>(</td> <td class="paramtype"> <em>self</em>, </td> <td class="paramname"></td> </tr><tr> <td class="memname"></td> <td></td> <td class="paramtype"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> </td> <td class="paramname"><em>other</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Copy constructor. </p></div></div><a class="anchor" name="dataType"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">QUrl dataType</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p><dl class="return" compact><dt><b>Returns:</b></dt><dd> The datatype URI of a literal node, i.e. the XML schema type or an empty value if the node is not a LiteralNode. </dd></dl> \sa LiteralValue.dataTypeUri </p></div></div><a class="anchor" name="identifier"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">QString identifier</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p>Retrieve a blank node's identifier. <dl class="return" compact><dt><b>Returns:</b></dt><dd> The node's identifier if it is a BlankNode, a null string otherwise. </dd></dl> </p></div></div><a class="anchor" name="isBlank"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">bool isBlank</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p><dl class="return" compact><dt><b>Returns:</b></dt><dd> <b>true</b> if the node is a BlankNode (anonymous). </dd></dl> </p></div></div><a class="anchor" name="isEmpty"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">bool isEmpty</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p><dl class="return" compact><dt><b>Returns:</b></dt><dd> <b>true</b> if the node is empty. </dd></dl> </p></div></div><a class="anchor" name="isLiteral"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">bool isLiteral</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p><dl class="return" compact><dt><b>Returns:</b></dt><dd> <b>true</b> if the node is a LiteralNode. </dd></dl> </p></div></div><a class="anchor" name="isResource"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">bool isResource</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p><dl class="return" compact><dt><b>Returns:</b></dt><dd> <b>true</b> if the node is a ResourceNode. </dd></dl> </p></div></div><a class="anchor" name="isValid"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">bool isValid</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p><dl class="return" compact><dt><b>Returns:</b></dt><dd> <b>true</b> if the node is a ResourceNode, LiteralNode or BlankNode. </dd></dl> </p></div></div><a class="anchor" name="language"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">QString language</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p>Each literal value can have an associated language, thus each property can be stored for different languages. An empty language refers to the default language. </p> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A string representing the language of the literal value or an empty string if the node is not a literal. </dd></dl> </p> <p> <dl class="deprecated" compact><dt><b>Deprecated:</b></dt><dd> Language exists on the Soprano.LiteralValue. Use Soprano.Node.literal() and Soprano.LiteralValue.language(). </dd></dl> </p></div></div><a class="anchor" name="literal"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname"><a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> literal</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p><dl class="return" compact><dt><b>Returns:</b></dt><dd> The literal value if the node is a LiteralNode. An null QString otherwise. </dd></dl> </p></div></div><a class="anchor" name="matches"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">bool matches</td> <td>(</td> <td class="paramtype"> <em>self</em>, </td> <td class="paramname"></td> </tr><tr> <td class="memname"></td> <td></td> <td class="paramtype"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> </td> <td class="paramname"><em>other</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Match this node against template node <b>other.</b> The only difference to operator== is that empty nodes are matched as wildcards, i.e. they match any other node. </p> <p> Be aware that the following is NOT always true since only <b>other</b> is treated a a wildcard: </p> <p> <pre class="fragment"> // NOT always true: a.matches(b) == b.matches(a) </pre> </p> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> <b>true</b> if this node matches other, <b>false</b> if not. </dd></dl> </p> <p> \sa Statement.matches </p></div></div><a class="anchor" name="operator !="></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">bool operator !=</td> <td>(</td> <td class="paramtype"> <em>self</em>, </td> <td class="paramname"></td> </tr><tr> <td class="memname"></td> <td></td> <td class="paramtype"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> </td> <td class="paramname"><em>other</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Comparision operator. <dl class="return" compact><dt><b>Returns:</b></dt><dd> <b>true</b> if this node and <b>other</b> differ. </dd></dl> </p></div></div><a class="anchor" name="operator =="></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">bool operator ==</td> <td>(</td> <td class="paramtype"> <em>self</em>, </td> <td class="paramname"></td> </tr><tr> <td class="memname"></td> <td></td> <td class="paramtype"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> </td> <td class="paramname"><em>other</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Comparision operator. <dl class="return" compact><dt><b>Returns:</b></dt><dd> <b>true</b> if this node is a LiteralNode and has literal value <b>other.</b> </dd></dl> </p></div></div><a class="anchor" name="operator =="></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">bool operator ==</td> <td>(</td> <td class="paramtype"> <em>self</em>, </td> <td class="paramname"></td> </tr><tr> <td class="memname"></td> <td></td> <td class="paramtype">QUrl </td> <td class="paramname"><em>uri</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Comparision operator. <dl class="return" compact><dt><b>Returns:</b></dt><dd> <b>true</b> if this node is a LiteralNode and has literal value <b>other.</b> </dd></dl> </p></div></div><a class="anchor" name="operator =="></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">bool operator ==</td> <td>(</td> <td class="paramtype"> <em>self</em>, </td> <td class="paramname"></td> </tr><tr> <td class="memname"></td> <td></td> <td class="paramtype"><a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> </td> <td class="paramname"><em>other</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Comparision operator. <dl class="return" compact><dt><b>Returns:</b></dt><dd> <b>true</b> if this node is a LiteralNode and has literal value <b>other.</b> </dd></dl> </p></div></div><a class="anchor" name="toN3"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">QString toN3</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p>Convert a Node into N3 notation to be used in SPARQL graph patterns. </p> <p> Examples: <pre class="fragment"> <http://soprano.sourceforce.net/> "Hello World"^^<http://www.w3.org/2001/XMLSchema#string> "09-08-1977T17:42.234Z"^^<http://www.w3.org/2001/XMLSchema#dateTime> _:blankNode </pre> </p> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A string representing the node in N3 encoding or an empty string for invalid nodes. </dd></dl> </p> <p> \sa resourceToN3(), literalToN3(), blankToN3(), fromN3(), toString() </p> <p> <dl class="since" compact><dt><b>Since:</b></dt><dd> 2.2 </dd></dl> </p></div></div><a class="anchor" name="toString"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">QString toString</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p>Converts the Node to a string. </p> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A String representation of the Node, suitable for storage, not really suitable for user readable strings. </dd></dl> </p> <p> \sa LiteralValue.toString(), QUrl.toString(), toN3() </p></div></div><a class="anchor" name="type"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname"><a href="../soprano/Soprano.Node.html#Type">Soprano.Node.Type</a> type</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p><dl class="return" compact><dt><b>Returns:</b></dt><dd> The node type. </dd></dl> </p></div></div><a class="anchor" name="uri"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">QUrl uri</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname"><em>self</em> )</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p><dl class="return" compact><dt><b>Returns:</b></dt><dd> The URI if the node is a ResourceNode. An null QUrl otherwise. </dd></dl> </p></div></div><hr><h2>Static Method Documentation</h2><a class="anchor" name="blankToN3"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">QString blankToN3</td> <td>(</td> <td class="paramtype">QString </td> <td class="paramname"><em>blank</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Format a blank node identifier as N3 string to be used in SPARQL queries. </p> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A string representing the blank identifier in N3 encoding or an empty string for invalid/empty ids. </dd></dl> </p> <p> Example: <pre class="fragment"> _:blankNode </pre> </p> <p> \sa toN3(), fromN3() </p> <p> <dl class="since" compact><dt><b>Since:</b></dt><dd> 2.3 </dd></dl> </p></div></div><a class="anchor" name="createBlankNode"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> createBlankNode</td> <td>(</td> <td class="paramtype">QString </td> <td class="paramname"><em>id</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Convenience method to create a blank node. Using this method instead of the constructor may result in better readable code. </p> <p> If you need to create a new blank node which is not used in the model yet and, thus, has a unique identifier see Model.createBlankNode(). </p> <p> </p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td></td><td valign="top"><em>id</em> </td><td> An identifier for the blank node. </td></tr> </table></dl> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A blank node or an empty Node if the specified identifier was empty. </dd></dl> </p></div></div><a class="anchor" name="createEmptyNode"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> createEmptyNode</td> <td>(</td> <td class="paramtype"> </td> <td class="paramname">)</td> <td width="100%"> </td> </tr> </table> </div> <div class="memdoc"><p>Convenience method to create an empty node. Using this method instead of the default constructor may result in better readable code. </p> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> An empty Node. </dd></dl> </p></div></div><a class="anchor" name="createLiteralNode"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> createLiteralNode</td> <td>(</td> <td class="paramtype"><a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> </td> <td class="paramname"><em>value</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Convenience method to create a literal node. Using this method instead of the constructor may result in better readable code. </p> <p> </p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td></td><td valign="top"><em>value</em> </td><td> The value of a node. If empty the node will become an empty node. </td></tr> </table></dl> <p> </p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td></td><td valign="top"><em>language</em> </td><td> The language of the literal value. </td></tr> </table></dl> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A literal node or an empty node if the specified value was empty. </dd></dl> </p> <p> <dl class="deprecated" compact><dt><b>Deprecated:</b></dt><dd> Use Soprano.Node.createLiteralNode( const LiteralValue& ) and Soprano.LiteralValue.createPlainLiteral( const QString&, const LanguageTag& ) </dd></dl> </p></div></div><a class="anchor" name="createLiteralNode"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> createLiteralNode</td> <td>(</td> <td class="paramtype"><a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> </td> <td class="paramname"><em>value</em>, </td> </tr> <tr> <td class="memname"></td> <td></td> <td class="paramtype">QString </td> <td class="paramname"><em>language</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Convenience method to create a literal node. Using this method instead of the constructor may result in better readable code. </p> <p> </p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td></td><td valign="top"><em>value</em> </td><td> The value of a node. If empty the node will become an empty node. </td></tr> </table></dl> <p> </p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td></td><td valign="top"><em>language</em> </td><td> The language of the literal value. </td></tr> </table></dl> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A literal node or an empty node if the specified value was empty. </dd></dl> </p> <p> <dl class="deprecated" compact><dt><b>Deprecated:</b></dt><dd> Use Soprano.Node.createLiteralNode( const LiteralValue& ) and Soprano.LiteralValue.createPlainLiteral( const QString&, const LanguageTag& ) </dd></dl> </p></div></div><a class="anchor" name="createResourceNode"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> createResourceNode</td> <td>(</td> <td class="paramtype">QUrl </td> <td class="paramname"><em>uri</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Convenience method to create a resource node. Using this method instead of the constructor may result in better readable code. </p> <p> </p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td></td><td valign="top"><em>uri</em> </td><td> The URI of the node. If empty the type will be ignored and an empty node will be created. </td></tr> </table></dl> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A resource Node or an empty Node if the specified URI is empty. </dd></dl> </p></div></div><a class="anchor" name="fromN3"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> fromN3</td> <td>(</td> <td class="paramtype">QString </td> <td class="paramname"><em>n3</em>, </td> </tr> <tr> <td class="memname"></td> <td></td> <td class="paramtype"><a href="../soprano/Soprano.Node.html">Soprano.Node.N3ParserFlags</a> </td> <td class="paramname"><em>flags=Soprano.Node.NoFlags</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Convert a node from its N3 representation. </p> <p> </p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td></td><td valign="top"><em>n3</em> </td><td> The N3 representation of the node. </td></tr> </table></dl> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A %Node representing the parsed version of <b>n3</b> or an invalid %Node in case parsing failed. </dd></dl> </p> <p> \sa resourceToN3(), literalToN3(), blankToN3(), toN3() </p> <p> <dl class="since" compact><dt><b>Since:</b></dt><dd> 2.5 </dd></dl> </p></div></div><a class="anchor" name="fromN3Stream"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname"><a href="../soprano/Soprano.Node.html">Soprano.Node</a> fromN3Stream</td> <td>(</td> <td class="paramtype">QTextStream </td> <td class="paramname"><em>stream</em>, </td> </tr> <tr> <td class="memname"></td> <td></td> <td class="paramtype"><a href="../soprano/Soprano.Node.html">Soprano.Node.N3ParserFlags</a> </td> <td class="paramname"><em>flags=Soprano.Node.NoFlags</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Read a node from its N3 representation on a stream. </p> <p> </p><dl compact><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td></td><td valign="top"><em>stream</em> </td><td> The stream from which the N3 representation of the node will be read. </td></tr> </table></dl> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A %Node representing the parsed version of <b>n3</b> or an invalid %Node in case parsing failed. </dd></dl> </p> <p> \sa resourceToN3(), literalToN3(), blankToN3(), toN3() </p> <p> <dl class="since" compact><dt><b>Since:</b></dt><dd> 2.5 </dd></dl> </p></div></div><a class="anchor" name="literalToN3"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">QString literalToN3</td> <td>(</td> <td class="paramtype"><a href="../soprano/Soprano.LiteralValue.html">Soprano.LiteralValue</a> </td> <td class="paramname"><em>literal</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Format a literal value as N3 string to be used in SPARQL queries. </p> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A string representing the literal in N3 encoding or an empty string for invalid literals. </dd></dl> </p> <p> Examples: <pre class="fragment"> "Hello World"^^<http://www.w3.org/2001/XMLSchema#string> "09-08-1977T17:42.234Z"^^<http://www.w3.org/2001/XMLSchema#dateTime> </pre> </p> <p> \sa toN3(), fromN3() </p> <p> <dl class="since" compact><dt><b>Since:</b></dt><dd> 2.3 </dd></dl> </p></div></div><a class="anchor" name="resourceToN3"></a> <div class="memitem"> <div class="memproto"> <table class="memname"><tr> <td class="memname">QString resourceToN3</td> <td>(</td> <td class="paramtype">QUrl </td> <td class="paramname"><em>resource</em></td> </tr> <tr> <td></td> <td>)</td> <td></td> <td></td> <td width="100%"> </td> </tr></table> </div> <div class="memdoc"><p>Format a resource URI as N3 string to be used in SPARQL queries. </p> <p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> A string representing the resource in N3 encoding or an empty string for invalid URIs. </dd></dl> </p> <p> Example: <pre class="fragment"> <http://soprano.sourceforce.net/> </pre> </p> <p> \sa toN3(), fromN3() </p> <p> <dl class="since" compact><dt><b>Since:</b></dt><dd> 2.3 </dd></dl> </p></div></div><hr><h2>Enumeration Documentation</h2><a class="anchor" name="N3ParserFlag"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr><td class="memname">N3ParserFlag</td> </tr> </table> </div> <div class="memdoc"><p>Parsing flags to infuence the behaviour of the parser in fromN3() and fromN3Stream(). </p> <p> <dl class="since" compact><dt><b>Since:</b></dt><dd> 2.5 </dd></dl> </p><dl compact><dt><b>Enumerator: </b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"><tr><td valign="top"><em>NoFlags</em> = 0x0</td><td><tr><td valign="top"><em>StrictLiteralTypes</em> = 0x1</td><td><tr><td valign="top"><em>StrictUris</em> = 0x2</td><td><tr><td valign="top"><em>IgnorePrefixes</em> = 0x4</td><td></table> </dl> </div></div><p><a class="anchor" name="Type"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr><td class="memname">Type</td> </tr> </table> </div> <div class="memdoc"><dl compact><dt><b>Enumerator: </b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"><tr><td valign="top"><em>EmptyNode</em> = 0</td><td><tr><td valign="top"><em>ResourceNode</em> = 1</td><td><tr><td valign="top"><em>LiteralNode</em> = 2</td><td><tr><td valign="top"><em>BlankNode</em> = 3</td><td></table> </dl> </div></div><p> </div> </div> </div> <div id="left"> <div class="menu_box"> <div class="nav_list"> <ul> <li><a href="../allclasses.html">Full Index</a></li> </ul> </div> <a name="cp-menu" /><div class="menutitle"><div> <h2 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