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<td><strong>Class</strong></td>
<td class="class-name-in-header">Redland::Literal</td>
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<td><strong>In:</strong></td>
<td><a href="../../files/rdf/redland/node_rb.html">rdf/redland/node.rb</a><br /></td>
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<td><strong>Parent:</strong></td>
<td><a href="Node.html">Node</a></td>
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<p>A literal node</p>
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<h3 class="section-bar">Methods</h3>
<div class="name-list"><a href="#M000078">from_node</a> <a href="#M000079">from_xml</a> <a href="#M000077">new</a> </div>
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<div id="includes-list"><span class="include-name"><a href="../Redland.html">Redland</a></span></div>
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<h3 class="section-bar">Attributes</h3>
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<td class="context-item-name">language</td>
<td class="context-item-value"> [R] </td>
<td class="context-item-desc">the language of the literal</td>
</tr>
<tr class="top-aligned-row context-row">
<td class="context-item-name">value</td>
<td class="context-item-value"> [R] </td>
<td class="context-item-desc">the string value of the literal</td>
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<h3 class="section-bar">Public Class methods</h3>
<div id="method-M000078" class="method-detail"><a name="M000078" id="M000078"></a>
<div class="method-heading"><a href="#M000078" class="method-signature"><span class="method-name">from_node</span><span class="method-args">(node)</span></a></div>
<div class="method-description">
<p>create a literal from another <a href="Node.html">Node</a></p>
<p><a class="source-toggle" href="#" onclick="toggleCode('M000078-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000078-source">
<pre>
<span class="ruby-comment cmt"># File rdf/redland/node.rb, line 246</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-constant">Literal</span>.<span class="ruby-identifier">from_node</span>(<span class="ruby-identifier">node</span>)
<span class="ruby-identifier">lang</span> = <span class="ruby-constant">Redland</span>.<span class="ruby-identifier">librdf_node_get_literal_value_language</span>(<span class="ruby-identifier">node</span>) <span class="ruby-keyword kw">if</span> <span class="ruby-constant">Redland</span>.<span class="ruby-identifier">librdf_node_get_literal_value_language</span>(<span class="ruby-identifier">node</span>)
<span class="ruby-identifier">str</span> = <span class="ruby-constant">Redland</span>.<span class="ruby-identifier">librdf_node_get_literal_value</span>(<span class="ruby-identifier">node</span>)
<span class="ruby-identifier">hash_uri</span> = <span class="ruby-constant">Redland</span>.<span class="ruby-identifier">librdf_node_get_literal_value_datatype_uri</span>(<span class="ruby-identifier">node</span>)
<span class="ruby-identifier">hash_uri</span> = <span class="ruby-constant">Uri</span>.<span class="ruby-identifier">new</span>(<span class="ruby-constant">Redland</span>.<span class="ruby-identifier">librdf_uri_to_string</span>(<span class="ruby-identifier">hash_uri</span>)) <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">hash_uri</span>
<span class="ruby-keyword kw">return</span> <span class="ruby-constant">Literal</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">str</span>,<span class="ruby-identifier">lang</span>,<span class="ruby-identifier">hash_uri</span>)
<span class="ruby-keyword kw">end</span>
</pre></div>
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<div id="method-M000079" class="method-detail"><a name="M000079" id="M000079"></a>
<div class="method-heading"><a href="#M000079" class="method-signature"><span class="method-name">from_xml</span><span class="method-args">(str,lang=nil)</span></a></div>
<div class="method-description">
<p>create a literal from and xml string</p>
<pre>
literal = Literal.from_xml('<em>This is emphasized</em>')
</pre>
<p><a class="source-toggle" href="#" onclick="toggleCode('M000079-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000079-source">
<pre>
<span class="ruby-comment cmt"># File rdf/redland/node.rb, line 256</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-constant">Literal</span>.<span class="ruby-identifier">from_xml</span>(<span class="ruby-identifier">str</span>,<span class="ruby-identifier">lang</span>=<span class="ruby-keyword kw">nil</span>)
<span class="ruby-keyword kw">return</span> <span class="ruby-constant">Literal</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">str</span>,<span class="ruby-identifier">lang</span>,<span class="ruby-keyword kw">nil</span>,<span class="ruby-keyword kw">true</span>)
<span class="ruby-keyword kw">end</span>
</pre></div>
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<div id="method-M000077" class="method-detail"><a name="M000077" id="M000077"></a>
<div class="method-heading"><a href="#M000077" class="method-signature"><span class="method-name">new</span><span class="method-args">(str,lang=nil,uri=nil,is_xml=false)</span></a></div>
<div class="method-description">
<p>create a <a href="Literal.html#M000077">new</a> <a href="Literal.html">Literal</a> node</p>
<pre>
literal = Literal.new('Dominic')
label = Literal.new('Name','en')
</pre>
<p><a class="source-toggle" href="#" onclick="toggleCode('M000077-source');return false;">[Source]</a></p>
<div class="method-source-code" id="M000077-source">
<pre>
<span class="ruby-comment cmt"># File rdf/redland/node.rb, line 231</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">initialize</span>(<span class="ruby-identifier">str</span>,<span class="ruby-identifier">lang</span>=<span class="ruby-keyword kw">nil</span>,<span class="ruby-identifier">uri</span>=<span class="ruby-keyword kw">nil</span>,<span class="ruby-identifier">is_xml</span>=<span class="ruby-keyword kw">false</span>)
<span class="ruby-ivar">@value</span> = <span class="ruby-identifier">str</span>
<span class="ruby-ivar">@language</span> = <span class="ruby-identifier">lang</span>
<span class="ruby-identifier">is_xml</span> = <span class="ruby-identifier">is_xml</span><span class="ruby-operator">==</span><span class="ruby-keyword kw">true</span> <span class="ruby-operator">?</span> <span class="ruby-value">1</span> <span class="ruby-operator">:</span> <span class="ruby-value">0</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">uri</span>
<span class="ruby-ivar">@node</span> = <span class="ruby-constant">Redland</span>.<span class="ruby-identifier">librdf_new_node_from_typed_literal</span>(<span class="ruby-identifier">$world</span>.<span class="ruby-identifier">world</span>,<span class="ruby-identifier">value</span>,<span class="ruby-identifier">lang</span>,<span class="ruby-identifier">uri</span>.<span class="ruby-identifier">uri</span>)
<span class="ruby-keyword kw">else</span>
<span class="ruby-ivar">@node</span> = <span class="ruby-constant">Redland</span>.<span class="ruby-identifier">librdf_new_node_from_literal</span>(<span class="ruby-identifier">$world</span>.<span class="ruby-identifier">world</span>,<span class="ruby-identifier">value</span>,<span class="ruby-identifier">lang</span>,<span class="ruby-identifier">is_xml</span>)
<span class="ruby-keyword kw">end</span>
<span class="ruby-identifier">raise</span> <span class="ruby-constant">RedlandError</span>.<span class="ruby-identifier">new</span>(<span class="ruby-value str">"Node construction failed"</span>) <span class="ruby-keyword kw">if</span> <span class="ruby-keyword kw">not</span> <span class="ruby-ivar">@node</span>
<span class="ruby-constant">ObjectSpace</span>.<span class="ruby-identifier">define_finalizer</span>(<span class="ruby-keyword kw">self</span>,<span class="ruby-constant">Node</span>.<span class="ruby-identifier">create_finalizer</span>(<span class="ruby-ivar">@node</span>))
<span class="ruby-keyword kw">end</span>
</pre></div>
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