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Subject svn commit: r1001278 [5/41] - in /websites/production/commonsrdf/content/commons-rdf-parent: ./ apidocs/ apidocs/org/ apidocs/org/apache/ apidocs/org/apache/commons/ apidocs/org/apache/commons/rdf/ apidocs/org/apache/commons/rdf/api/ apidocs/org/apache...
Date Thu, 17 Nov 2016 14:45:36 GMT
Added: websites/production/commonsrdf/content/commons-rdf-parent/apidocs/org/apache/commons/rdf/api/Literal.html
==============================================================================
--- websites/production/commonsrdf/content/commons-rdf-parent/apidocs/org/apache/commons/rdf/api/Literal.html (added)
+++ websites/production/commonsrdf/content/commons-rdf-parent/apidocs/org/apache/commons/rdf/api/Literal.html Thu Nov 17 14:45:34 2016
@@ -0,0 +1,411 @@
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+<!-- NewPage -->
+<html lang="en">
+<head>
+<!-- Generated by javadoc -->
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+<title>Literal (Commons RDF 0.4.0-incubating-SNAPSHOT API)</title>
+<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
+<script type="text/javascript" src="../../../../../script.js"></script>
+</head>
+<body>
+<script type="text/javascript"><!--
+    try {
+        if (location.href.indexOf('is-external=true') == -1) {
+            parent.document.title="Literal (Commons RDF 0.4.0-incubating-SNAPSHOT API)";
+        }
+    }
+    catch(err) {
+    }
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+var methods = {"i0":6,"i1":6,"i2":6,"i3":6,"i4":6};
+var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],4:["t3","Abstract Methods"]};
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+var rowColor = "rowColor";
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+<div class="topNav"><a name="navbar.top">
+<!--   -->
+</a>
+<div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div>
+<a name="navbar.top.firstrow">
+<!--   -->
+</a>
+<ul class="navList" title="Navigation">
+<li><a href="../../../../../overview-summary.html">Overview</a></li>
+<li><a href="package-summary.html">Package</a></li>
+<li class="navBarCell1Rev">Class</li>
+<li><a href="class-use/Literal.html">Use</a></li>
+<li><a href="package-tree.html">Tree</a></li>
+<li><a href="../../../../../deprecated-list.html">Deprecated</a></li>
+<li><a href="../../../../../index-all.html">Index</a></li>
+<li><a href="../../../../../help-doc.html">Help</a></li>
+</ul>
+</div>
+<div class="subNav">
+<ul class="navList">
+<li><a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
+<li><a href="../../../../../org/apache/commons/rdf/api/Quad.html" title="interface in org.apache.commons.rdf.api"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
+</ul>
+<ul class="navList">
+<li><a href="../../../../../index.html?org/apache/commons/rdf/api/Literal.html" target="_top">Frames</a></li>
+<li><a href="Literal.html" target="_top">No&nbsp;Frames</a></li>
+</ul>
+<ul class="navList" id="allclasses_navbar_top">
+<li><a href="../../../../../allclasses-noframe.html">All&nbsp;Classes</a></li>
+</ul>
+<div>
+<script type="text/javascript"><!--
+  allClassesLink = document.getElementById("allclasses_navbar_top");
+  if(window==top) {
+    allClassesLink.style.display = "block";
+  }
+  else {
+    allClassesLink.style.display = "none";
+  }
+  //-->
+</script>
+</div>
+<div>
+<ul class="subNavList">
+<li>Summary:&nbsp;</li>
+<li>Nested&nbsp;|&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
+<li>Constr&nbsp;|&nbsp;</li>
+<li><a href="#method.summary">Method</a></li>
+</ul>
+<ul class="subNavList">
+<li>Detail:&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
+<li>Constr&nbsp;|&nbsp;</li>
+<li><a href="#method.detail">Method</a></li>
+</ul>
+</div>
+<a name="skip.navbar.top">
+<!--   -->
+</a></div>
+<!-- ========= END OF TOP NAVBAR ========= -->
+<!-- ======== START OF CLASS DATA ======== -->
+<div class="header">
+<div class="subTitle">org.apache.commons.rdf.api</div>
+<h2 title="Interface Literal" class="title">Interface Literal</h2>
+</div>
+<div class="contentContainer">
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<dl>
+<dt>All Superinterfaces:</dt>
+<dd><a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api">RDFTerm</a></dd>
+</dl>
+<hr>
+<br>
+<pre>public interface <a href="../../../../../src-html/org/apache/commons/rdf/api/Literal.html#line.34">Literal</a>
+extends <a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api">RDFTerm</a></pre>
+<div class="block">A RDF-1.1 Literal, as defined by
+ <a href= "http://www.w3.org/TR/rdf11-concepts/#section-Graph-Literal"
+ >RDF-1.1 Concepts and Abstract Syntax</a>, a W3C Recommendation published on
+ 25 February 2014</div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../../../org/apache/commons/rdf/api/RDF.html#createLiteral-java.lang.String-"><code>RDF.createLiteral(String)</code></a>, 
+<a href="../../../../../org/apache/commons/rdf/api/RDF.html#createLiteral-java.lang.String-org.apache.commons.rdf.api.IRI-"><code>RDF.createLiteral(String, IRI)</code></a>, 
+<a href="../../../../../org/apache/commons/rdf/api/RDF.html#createLiteral-java.lang.String-java.lang.String-"><code>RDF.createLiteral(String, String)</code></a></dd>
+</dl>
+</li>
+</ul>
+</div>
+<div class="summary">
+<ul class="blockList">
+<li class="blockList">
+<!-- ========== METHOD SUMMARY =========== -->
+<ul class="blockList">
+<li class="blockList"><a name="method.summary">
+<!--   -->
+</a>
+<h3>Method Summary</h3>
+<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr id="i0" class="altColor">
+<td class="colFirst"><code>boolean</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Literal.html#equals-java.lang.Object-">equals</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;other)</code>
+<div class="block">Check it this Literal is equal to another Literal.</div>
+</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code><a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api">IRI</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Literal.html#getDatatype--">getDatatype</a></span>()</code>
+<div class="block">The IRI identifying the datatype that determines how the lexical form
+ maps to a literal value.</div>
+</td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Literal.html#getLanguageTag--">getLanguageTag</a></span>()</code>
+<div class="block">If and only if the datatype IRI is
+ <a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#langString"
+ >http://www.w3.org/1999/02/22-rdf-syntax-ns#langString</a>, the language
+ tag for this Literal is a non-empty language tag as defined by
+ <a href="http://tools.ietf.org/html/bcp47">BCP47</a>.<br>
+ If the datatype IRI is not
+ <a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#langString"
+ >http://www.w3.org/1999/02/22-rdf-syntax-ns#langString</a>, this method
+ must return <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#empty--" title="class or interface in java.util"><code>Optional.empty()</code></a>.</div>
+</td>
+</tr>
+<tr id="i3" class="rowColor">
+<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Literal.html#getLexicalForm--">getLexicalForm</a></span>()</code>
+<div class="block">The lexical form of this literal, represented by a
+ <a href="http://www.unicode.org/versions/latest/">Unicode string</a>.</div>
+</td>
+</tr>
+<tr id="i4" class="altColor">
+<td class="colFirst"><code>int</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Literal.html#hashCode--">hashCode</a></span>()</code>
+<div class="block">Calculate a hash code for this Literal.</div>
+</td>
+</tr>
+</table>
+<ul class="blockList">
+<li class="blockList"><a name="methods.inherited.from.class.org.apache.commons.rdf.api.RDFTerm">
+<!--   -->
+</a>
+<h3>Methods inherited from interface&nbsp;org.apache.commons.rdf.api.<a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api">RDFTerm</a></h3>
+<code><a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html#ntriplesString--">ntriplesString</a></code></li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="details">
+<ul class="blockList">
+<li class="blockList">
+<!-- ============ METHOD DETAIL ========== -->
+<ul class="blockList">
+<li class="blockList"><a name="method.detail">
+<!--   -->
+</a>
+<h3>Method Detail</h3>
+<a name="getLexicalForm--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getLexicalForm</h4>
+<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Literal.html#line.45">getLexicalForm</a>()</pre>
+<div class="block">The lexical form of this literal, represented by a
+ <a href="http://www.unicode.org/versions/latest/">Unicode string</a>.</div>
+<dl>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>The lexical form of this literal.</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href=
+      "http://www.w3.org/TR/rdf11-concepts/#dfn-lexical-form">RDF-1.1
+      Literal lexical form</a></dd>
+</dl>
+</li>
+</ul>
+<a name="getDatatype--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getDatatype</h4>
+<pre><a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api">IRI</a>&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Literal.html#line.63">getDatatype</a>()</pre>
+<div class="block">The IRI identifying the datatype that determines how the lexical form
+ maps to a literal value.
+
+ If the datatype IRI is
+ <a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#langString"
+ >http://www.w3.org/1999/02/22-rdf-syntax-ns#langString</a>,
+ <a href="../../../../../org/apache/commons/rdf/api/Literal.html#getLanguageTag--"><code>getLanguageTag()</code></a> must not return <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#empty--" title="class or interface in java.util"><code>Optional.empty()</code></a>, and
+ it must return a valid
+ <a href="http://tools.ietf.org/html/bcp47">BCP47</a> language tag.</div>
+<dl>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>The datatype IRI for this literal.</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href=
+      "http://www.w3.org/TR/rdf11-concepts/#dfn-datatype-iri">RDF-1.1
+      Literal datatype IRI</a></dd>
+</dl>
+</li>
+</ul>
+<a name="getLanguageTag--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getLanguageTag</h4>
+<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Literal.html#line.89">getLanguageTag</a>()</pre>
+<div class="block">If and only if the datatype IRI is
+ <a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#langString"
+ >http://www.w3.org/1999/02/22-rdf-syntax-ns#langString</a>, the language
+ tag for this Literal is a non-empty language tag as defined by
+ <a href="http://tools.ietf.org/html/bcp47">BCP47</a>.<br>
+ If the datatype IRI is not
+ <a href="http://www.w3.org/1999/02/22-rdf-syntax-ns#langString"
+ >http://www.w3.org/1999/02/22-rdf-syntax-ns#langString</a>, this method
+ must return <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#empty--" title="class or interface in java.util"><code>Optional.empty()</code></a>.
+
+ Implementation note: If your application requires <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io"><code>Serializable</code></a>
+ objects, it is best not to store an <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util"><code>Optional</code></a> in a field. It is
+ recommended to use <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#ofNullable-T-" title="class or interface in java.util"><code>Optional.ofNullable(Object)</code></a> to create the
+ return value for this method.</div>
+<dl>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>The <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util"><code>Optional</code></a> language tag for this literal. If
+         <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#isPresent--" title="class or interface in java.util"><code>Optional.isPresent()</code></a> returns true, the value returned by
+         <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#get--" title="class or interface in java.util"><code>Optional.get()</code></a> must be a non-empty string conforming to
+         BCP47.</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href=
+      "http://www.w3.org/TR/rdf11-concepts/#dfn-language-tag">RDF-1.1
+      Literal language tag</a></dd>
+</dl>
+</li>
+</ul>
+<a name="equals-java.lang.Object-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>equals</h4>
+<pre>boolean&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Literal.html#line.109">equals</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;other)</pre>
+<div class="block">Check it this Literal is equal to another Literal. <blockquote>
+ <a href="http://www.w3.org/TR/rdf11-concepts/#dfn-literal-term">Literal
+ term equality</a>: Two literals are term-equal (the same RDF literal) if
+ and only if the two lexical forms, the two datatype IRIs, and the two
+ language tags (if any) compare equal, character by character. Thus, two
+ literals can have the same value without being the same RDF term.
+ </blockquote>
+
+ Implementations MUST also override <a href="../../../../../org/apache/commons/rdf/api/Literal.html#hashCode--"><code>hashCode()</code></a> so that two equal
+ Literals produce the same hash code.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html#equals-java.lang.Object-">equals</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api">RDFTerm</a></code></dd>
+<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
+<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a></code>&nbsp;in class&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>other</code> - Another object</dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>true if other is a Literal and is equal to this</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang"><code>Object.equals(Object)</code></a></dd>
+</dl>
+</li>
+</ul>
+<a name="hashCode--">
+<!--   -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>hashCode</h4>
+<pre>int&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Literal.html#line.128">hashCode</a>()</pre>
+<div class="block">Calculate a hash code for this Literal.
+ <p>
+ The returned hash code MUST be equal to the result of
+ <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Objects.html?is-external=true#hash-java.lang.Object...-" title="class or interface in java.util"><code>Objects.hash(Object...)</code></a> with the arguments
+ <a href="../../../../../org/apache/commons/rdf/api/Literal.html#getLexicalForm--"><code>getLexicalForm()</code></a>, <a href="../../../../../org/apache/commons/rdf/api/Literal.html#getDatatype--"><code>getDatatype()</code></a>,
+ <a href="../../../../../org/apache/commons/rdf/api/Literal.html#getLanguageTag--"><code>getLanguageTag()</code></a>.
+ <p>
+ This method MUST be implemented in conjunction with
+ <a href="../../../../../org/apache/commons/rdf/api/Literal.html#equals-java.lang.Object-"><code>equals(Object)</code></a> so that two equal Literals produce the same hash
+ code.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html#hashCode--">hashCode</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api">RDFTerm</a></code></dd>
+<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
+<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a></code>&nbsp;in class&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>a hash code value for this Literal.</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang"><code>Object.hashCode()</code></a>, 
+<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Objects.html?is-external=true#hash-java.lang.Object...-" title="class or interface in java.util"><code>Objects.hash(Object...)</code></a></dd>
+</dl>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+</div>
+<!-- ========= END OF CLASS DATA ========= -->
+<!-- ======= START OF BOTTOM NAVBAR ====== -->
+<div class="bottomNav"><a name="navbar.bottom">
+<!--   -->
+</a>
+<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div>
+<a name="navbar.bottom.firstrow">
+<!--   -->
+</a>
+<ul class="navList" title="Navigation">
+<li><a href="../../../../../overview-summary.html">Overview</a></li>
+<li><a href="package-summary.html">Package</a></li>
+<li class="navBarCell1Rev">Class</li>
+<li><a href="class-use/Literal.html">Use</a></li>
+<li><a href="package-tree.html">Tree</a></li>
+<li><a href="../../../../../deprecated-list.html">Deprecated</a></li>
+<li><a href="../../../../../index-all.html">Index</a></li>
+<li><a href="../../../../../help-doc.html">Help</a></li>
+</ul>
+</div>
+<div class="subNav">
+<ul class="navList">
+<li><a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
+<li><a href="../../../../../org/apache/commons/rdf/api/Quad.html" title="interface in org.apache.commons.rdf.api"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
+</ul>
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+<li><a href="../../../../../index.html?org/apache/commons/rdf/api/Literal.html" target="_top">Frames</a></li>
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+  allClassesLink = document.getElementById("allclasses_navbar_bottom");
+  if(window==top) {
+    allClassesLink.style.display = "block";
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+  }
+  //-->
+</script>
+</div>
+<div>
+<ul class="subNavList">
+<li>Summary:&nbsp;</li>
+<li>Nested&nbsp;|&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
+<li>Constr&nbsp;|&nbsp;</li>
+<li><a href="#method.summary">Method</a></li>
+</ul>
+<ul class="subNavList">
+<li>Detail:&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
+<li>Constr&nbsp;|&nbsp;</li>
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+<!-- ======== END OF BOTTOM NAVBAR ======= -->
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+<ul class="navList" title="Navigation">
+<li><a href="../../../../../overview-summary.html">Overview</a></li>
+<li><a href="package-summary.html">Package</a></li>
+<li class="navBarCell1Rev">Class</li>
+<li><a href="class-use/Quad.html">Use</a></li>
+<li><a href="package-tree.html">Tree</a></li>
+<li><a href="../../../../../deprecated-list.html">Deprecated</a></li>
+<li><a href="../../../../../index-all.html">Index</a></li>
+<li><a href="../../../../../help-doc.html">Help</a></li>
+</ul>
+</div>
+<div class="subNav">
+<ul class="navList">
+<li><a href="../../../../../org/apache/commons/rdf/api/Literal.html" title="interface in org.apache.commons.rdf.api"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
+<li><a href="../../../../../org/apache/commons/rdf/api/QuadLike.html" title="interface in org.apache.commons.rdf.api"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
+</ul>
+<ul class="navList">
+<li><a href="../../../../../index.html?org/apache/commons/rdf/api/Quad.html" target="_top">Frames</a></li>
+<li><a href="Quad.html" target="_top">No&nbsp;Frames</a></li>
+</ul>
+<ul class="navList" id="allclasses_navbar_top">
+<li><a href="../../../../../allclasses-noframe.html">All&nbsp;Classes</a></li>
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+  if(window==top) {
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+  //-->
+</script>
+</div>
+<div>
+<ul class="subNavList">
+<li>Summary:&nbsp;</li>
+<li>Nested&nbsp;|&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
+<li>Constr&nbsp;|&nbsp;</li>
+<li><a href="#method.summary">Method</a></li>
+</ul>
+<ul class="subNavList">
+<li>Detail:&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
+<li>Constr&nbsp;|&nbsp;</li>
+<li><a href="#method.detail">Method</a></li>
+</ul>
+</div>
+<a name="skip.navbar.top">
+<!--   -->
+</a></div>
+<!-- ========= END OF TOP NAVBAR ========= -->
+<!-- ======== START OF CLASS DATA ======== -->
+<div class="header">
+<div class="subTitle">org.apache.commons.rdf.api</div>
+<h2 title="Interface Quad" class="title">Interface Quad</h2>
+</div>
+<div class="contentContainer">
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<dl>
+<dt>All Superinterfaces:</dt>
+<dd><a href="../../../../../org/apache/commons/rdf/api/QuadLike.html" title="interface in org.apache.commons.rdf.api">QuadLike</a>&lt;<a href="../../../../../org/apache/commons/rdf/api/BlankNodeOrIRI.html" title="interface in org.apache.commons.rdf.api">BlankNodeOrIRI</a>&gt;, <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html" title="interface in org.apache.commons.rdf.api">TripleLike</a></dd>
+</dl>
+<hr>
+<br>
+<pre>public interface <a href="../../../../../src-html/org/apache/commons/rdf/api/Quad.html#line.61">Quad</a>
+extends <a href="../../../../../org/apache/commons/rdf/api/QuadLike.html" title="interface in org.apache.commons.rdf.api">QuadLike</a>&lt;<a href="../../../../../org/apache/commons/rdf/api/BlankNodeOrIRI.html" title="interface in org.apache.commons.rdf.api">BlankNodeOrIRI</a>&gt;</pre>
+<div class="block">A Quad is a statement in a
+ <a href= "http://www.w3.org/TR/rdf11-concepts/#section-dataset" >RDF-1.1
+ Dataset</a>, as defined by <a href=
+ "https://www.w3.org/TR/2014/NOTE-rdf11-datasets-20140225/#quad-semantics"
+ >RDF-1.1 Concepts and Abstract Syntax</a>, a W3C Working Group Note published
+ on 25 February 2014.
+ <p>
+ A <code>Quad</code> object in Commons RDF is considered
+ <strong>immutable</strong>, that is, over its life time it will have
+ consistent behaviour for its <a href="../../../../../org/apache/commons/rdf/api/Quad.html#equals-java.lang.Object-"><code>equals(Object)</code></a>, and the instances
+ returned from <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getGraphName--"><code>getGraphName()</code></a>, <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getSubject--"><code>getSubject()</code></a>,
+ <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getPredicate--"><code>getPredicate()</code></a>, <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getObject--"><code>getObject()</code></a> and <a href="../../../../../org/apache/commons/rdf/api/Quad.html#asTriple--"><code>asTriple()</code></a> will
+ have consistent <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang"><code>Object.equals(Object)</code></a> behaviour.
+ <p>
+ Note that <code>Quad</code> methods are not required to return object
+ identical (<code>==</code>) instances as long as they are equivalent
+ according to <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang"><code>Object.equals(Object)</code></a>. Specialisations of
+ <code>Quad</code> may provide additional methods that are documented to be
+ mutable.
+ <p>
+ <code>Quad</code> methods are <strong>thread-safe</strong>, however
+ specialisations may provide additional methods that are documented to not be
+ thread-safe.
+ <p>
+ <code>Quad</code>s can be safely used in hashing collections like
+ <a href="https://docs.oracle.com/javase/8/docs/api/java/util/HashSet.html?is-external=true" title="class or interface in java.util"><code>HashSet</code></a> and <a href="https://docs.oracle.com/javase/8/docs/api/java/util/HashMap.html?is-external=true" title="class or interface in java.util"><code>HashMap</code></a>.
+ <p>
+ Any <code>Quad</code> can be used interchangeably across Commons RDF
+ implementations.</div>
+<dl>
+<dt><span class="simpleTagLabel">Since:</span></dt>
+<dd>0.3.0-incubating</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../../../org/apache/commons/rdf/api/Dataset.html" title="interface in org.apache.commons.rdf.api"><code>Dataset</code></a>, 
+<a href="../../../../../org/apache/commons/rdf/api/RDF.html#createQuad-org.apache.commons.rdf.api.BlankNodeOrIRI-org.apache.commons.rdf.api.BlankNodeOrIRI-org.apache.commons.rdf.api.IRI-org.apache.commons.rdf.api.RDFTerm-"><code>RDF.createQuad(BlankNodeOrIRI,BlankNodeOrIRI,IRI,RDFTerm)</code></a>, 
+<a href="http://www.w3.org/TR/2014/NOTE-rdf11-datasets-20140225/">RDF
+      1.1: On Semantics of RDF Datasets</a>, 
+<a href="http://www.w3.org/TR/rdf11-concepts/#section-dataset"> </a></dd>
+</dl>
+</li>
+</ul>
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+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t5" class="tableTab"><span><a href="javascript:show(16);">Default Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr id="i0" class="altColor">
+<td class="colFirst"><code>default <a href="../../../../../org/apache/commons/rdf/api/Triple.html" title="interface in org.apache.commons.rdf.api">Triple</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Quad.html#asTriple--">asTriple</a></span>()</code>
+<div class="block">Adapt this Quad to a Triple.</div>
+</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>boolean</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Quad.html#equals-java.lang.Object-">equals</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;other)</code>
+<div class="block">Check it this Quad is equal to another Quad.</div>
+</td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a>&lt;<a href="../../../../../org/apache/commons/rdf/api/BlankNodeOrIRI.html" title="interface in org.apache.commons.rdf.api">BlankNodeOrIRI</a>&gt;</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Quad.html#getGraphName--">getGraphName</a></span>()</code>
+<div class="block">The graph name (graph label) of this quad, if present.</div>
+</td>
+</tr>
+<tr id="i3" class="rowColor">
+<td class="colFirst"><code><a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api">RDFTerm</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Quad.html#getObject--">getObject</a></span>()</code>
+<div class="block">The object of this quad, which may be either a <a href="../../../../../org/apache/commons/rdf/api/BlankNode.html" title="interface in org.apache.commons.rdf.api"><code>BlankNode</code></a>, an
+ <a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api"><code>IRI</code></a>, or a <a href="../../../../../org/apache/commons/rdf/api/Literal.html" title="interface in org.apache.commons.rdf.api"><code>Literal</code></a>, which are represented in Commons RDF
+ by the interface <a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api"><code>RDFTerm</code></a>.</div>
+</td>
+</tr>
+<tr id="i4" class="altColor">
+<td class="colFirst"><code><a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api">IRI</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Quad.html#getPredicate--">getPredicate</a></span>()</code>
+<div class="block">The predicate <a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api"><code>IRI</code></a> of this quad.</div>
+</td>
+</tr>
+<tr id="i5" class="rowColor">
+<td class="colFirst"><code><a href="../../../../../org/apache/commons/rdf/api/BlankNodeOrIRI.html" title="interface in org.apache.commons.rdf.api">BlankNodeOrIRI</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Quad.html#getSubject--">getSubject</a></span>()</code>
+<div class="block">The subject of this quad, which may be either a <a href="../../../../../org/apache/commons/rdf/api/BlankNode.html" title="interface in org.apache.commons.rdf.api"><code>BlankNode</code></a> or an
+ <a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api"><code>IRI</code></a>, which are represented in Commons RDF by the interface
+ <a href="../../../../../org/apache/commons/rdf/api/BlankNodeOrIRI.html" title="interface in org.apache.commons.rdf.api"><code>BlankNodeOrIRI</code></a>.</div>
+</td>
+</tr>
+<tr id="i6" class="altColor">
+<td class="colFirst"><code>int</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/Quad.html#hashCode--">hashCode</a></span>()</code>
+<div class="block">Calculate a hash code for this Quad.</div>
+</td>
+</tr>
+</table>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="details">
+<ul class="blockList">
+<li class="blockList">
+<!-- ============ METHOD DETAIL ========== -->
+<ul class="blockList">
+<li class="blockList"><a name="method.detail">
+<!--   -->
+</a>
+<h3>Method Detail</h3>
+<a name="getGraphName--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getGraphName</h4>
+<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a>&lt;<a href="../../../../../org/apache/commons/rdf/api/BlankNodeOrIRI.html" title="interface in org.apache.commons.rdf.api">BlankNodeOrIRI</a>&gt;&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Quad.html#line.82">getGraphName</a>()</pre>
+<div class="block">The graph name (graph label) of this quad, if present.
+
+ If <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#isPresent--" title="class or interface in java.util"><code>Optional.isPresent()</code></a>, then the <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#get--" title="class or interface in java.util"><code>Optional.get()</code></a> is
+ either a <a href="../../../../../org/apache/commons/rdf/api/BlankNode.html" title="interface in org.apache.commons.rdf.api"><code>BlankNode</code></a> or an <a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api"><code>IRI</code></a>, indicating the
+ <a href="https://www.w3.org/TR/rdf11-concepts/#dfn-named-graph">graph
+ name</a> of this Quad. If the graph name is not present, e.g. the value
+ is <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#empty--" title="class or interface in java.util"><code>Optional.empty()</code></a>, it indicates that this Quad is in the
+ <a href="https://www.w3.org/TR/rdf11-concepts/#dfn-default-graph">default
+ graph</a>.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../../../org/apache/commons/rdf/api/QuadLike.html#getGraphName--">getGraphName</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/commons/rdf/api/QuadLike.html" title="interface in org.apache.commons.rdf.api">QuadLike</a>&lt;<a href="../../../../../org/apache/commons/rdf/api/BlankNodeOrIRI.html" title="interface in org.apache.commons.rdf.api">BlankNodeOrIRI</a>&gt;</code></dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>If <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#isPresent--" title="class or interface in java.util"><code>Optional.isPresent()</code></a>, the graph name
+         <a href="../../../../../org/apache/commons/rdf/api/BlankNodeOrIRI.html" title="interface in org.apache.commons.rdf.api"><code>BlankNodeOrIRI</code></a> of this quad, otherwise
+         <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#empty--" title="class or interface in java.util"><code>Optional.empty()</code></a>, indicating the default graph.</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="https://www.w3.org/TR/rdf11-concepts/#dfn-rdf-dataset">RDF-
+      1.1 Dataset</a></dd>
+</dl>
+</li>
+</ul>
+<a name="getSubject--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getSubject</h4>
+<pre><a href="../../../../../org/apache/commons/rdf/api/BlankNodeOrIRI.html" title="interface in org.apache.commons.rdf.api">BlankNodeOrIRI</a>&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Quad.html#line.94">getSubject</a>()</pre>
+<div class="block">The subject of this quad, which may be either a <a href="../../../../../org/apache/commons/rdf/api/BlankNode.html" title="interface in org.apache.commons.rdf.api"><code>BlankNode</code></a> or an
+ <a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api"><code>IRI</code></a>, which are represented in Commons RDF by the interface
+ <a href="../../../../../org/apache/commons/rdf/api/BlankNodeOrIRI.html" title="interface in org.apache.commons.rdf.api"><code>BlankNodeOrIRI</code></a>.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getSubject--">getSubject</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/commons/rdf/api/TripleLike.html" title="interface in org.apache.commons.rdf.api">TripleLike</a></code></dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>The subject <a href="../../../../../org/apache/commons/rdf/api/BlankNodeOrIRI.html" title="interface in org.apache.commons.rdf.api"><code>BlankNodeOrIRI</code></a> of this quad.</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="http://www.w3.org/TR/rdf11-concepts/#dfn-subject">RDF-1.1
+      Triple subject</a></dd>
+</dl>
+</li>
+</ul>
+<a name="getPredicate--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getPredicate</h4>
+<pre><a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api">IRI</a>&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Quad.html#line.104">getPredicate</a>()</pre>
+<div class="block">The predicate <a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api"><code>IRI</code></a> of this quad.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getPredicate--">getPredicate</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/commons/rdf/api/TripleLike.html" title="interface in org.apache.commons.rdf.api">TripleLike</a></code></dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>The predicate <a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api"><code>IRI</code></a> of this quad.</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="http://www.w3.org/TR/rdf11-concepts/#dfn-predicate">RDF-1.1
+      Triple predicate</a></dd>
+</dl>
+</li>
+</ul>
+<a name="getObject--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>getObject</h4>
+<pre><a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api">RDFTerm</a>&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Quad.html#line.116">getObject</a>()</pre>
+<div class="block">The object of this quad, which may be either a <a href="../../../../../org/apache/commons/rdf/api/BlankNode.html" title="interface in org.apache.commons.rdf.api"><code>BlankNode</code></a>, an
+ <a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api"><code>IRI</code></a>, or a <a href="../../../../../org/apache/commons/rdf/api/Literal.html" title="interface in org.apache.commons.rdf.api"><code>Literal</code></a>, which are represented in Commons RDF
+ by the interface <a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api"><code>RDFTerm</code></a>.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getObject--">getObject</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/commons/rdf/api/TripleLike.html" title="interface in org.apache.commons.rdf.api">TripleLike</a></code></dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>The object <a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api"><code>RDFTerm</code></a> of this quad.</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="http://www.w3.org/TR/rdf11-concepts/#dfn-object">RDF-1.1
+      Triple object</a></dd>
+</dl>
+</li>
+</ul>
+<a name="asTriple--">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>asTriple</h4>
+<pre>default&nbsp;<a href="../../../../../org/apache/commons/rdf/api/Triple.html" title="interface in org.apache.commons.rdf.api">Triple</a>&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Quad.html#line.153">asTriple</a>()</pre>
+<div class="block">Adapt this Quad to a Triple.
+ <p>
+ The returned <a href="../../../../../org/apache/commons/rdf/api/Triple.html" title="interface in org.apache.commons.rdf.api"><code>Triple</code></a> will have equivalent values returned from the
+ methods <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getSubject--"><code>TripleLike.getSubject()</code></a>,
+ <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getPredicate--"><code>TripleLike.getPredicate()</code></a> and <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getObject--"><code>TripleLike.getObject()</code></a>.
+ <p>
+ The returned <a href="../../../../../org/apache/commons/rdf/api/Triple.html" title="interface in org.apache.commons.rdf.api"><code>Triple</code></a> MUST NOT be <a href="../../../../../org/apache/commons/rdf/api/Quad.html#equals-java.lang.Object-"><code>equals(Object)</code></a> to this
+ <a href="../../../../../org/apache/commons/rdf/api/Quad.html" title="interface in org.apache.commons.rdf.api"><code>Quad</code></a>, even if this quad has a default graph
+ <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getGraphName--"><code>getGraphName()</code></a> value of <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#empty--" title="class or interface in java.util"><code>Optional.empty()</code></a>, but MUST
+ follow the <a href="../../../../../org/apache/commons/rdf/api/Triple.html#equals-java.lang.Object-"><code>Triple.equals(Object)</code></a> semantics. This means that the
+ following MUST be true:
+
+ <pre>
+ Quad q1, q2;
+ if (q1.equals(q2)) {
+     assert (q1.asTriple().equals(q2.asTriple()));
+ } else if (q1.asTriple().equals(q2.asTriple())) {
+     assert (q1.getSubject().equals(q2.getSubject()));
+     assert (q1.getPredicate().equals(q2.getPredicate()));
+     assert (q1.getObject().equals(q2.getObject()));
+     assert (!q1.getGraphName().equals(q2.getGraphName()));
+ }
+ </pre>
+
+ The <code>default</code> implementation of this method return a proxy
+ <a href="../../../../../org/apache/commons/rdf/api/Triple.html" title="interface in org.apache.commons.rdf.api"><code>Triple</code></a> instance that keeps a reference to this <a href="../../../../../org/apache/commons/rdf/api/Quad.html" title="interface in org.apache.commons.rdf.api"><code>Quad</code></a> to
+ call the underlying <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html" title="interface in org.apache.commons.rdf.api"><code>TripleLike</code></a> methods, but supplies a
+ <a href="../../../../../org/apache/commons/rdf/api/Triple.html" title="interface in org.apache.commons.rdf.api"><code>Triple</code></a> compatible implementation of <a href="../../../../../org/apache/commons/rdf/api/Triple.html#equals-java.lang.Object-"><code>Triple.equals(Object)</code></a>
+ and <a href="../../../../../org/apache/commons/rdf/api/Triple.html#hashCode--"><code>Triple.hashCode()</code></a>. Implementations may override this method,
+ e.g. for a more efficient solution.</div>
+<dl>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>A <a href="../../../../../org/apache/commons/rdf/api/Triple.html" title="interface in org.apache.commons.rdf.api"><code>Triple</code></a> that contains the same <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html" title="interface in org.apache.commons.rdf.api"><code>TripleLike</code></a>
+         properties as this Quad.</dd>
+</dl>
+</li>
+</ul>
+<a name="equals-java.lang.Object-">
+<!--   -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>equals</h4>
+<pre>boolean&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Quad.html#line.220">equals</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;other)</pre>
+<div class="block">Check it this Quad is equal to another Quad.
+ <p>
+ Two Quads are equal if and only if their <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getGraphName--"><code>getGraphName()</code></a>,
+ <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getSubject--"><code>getSubject()</code></a>, <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getPredicate--"><code>getPredicate()</code></a> and <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getObject--"><code>getObject()</code></a>
+ are equal.
+ </p>
+ <p>
+ Implementations MUST also override <a href="../../../../../org/apache/commons/rdf/api/Quad.html#hashCode--"><code>hashCode()</code></a> so that two equal
+ Quads produce the same hash code.
+ </p>
+ <p>
+ Note that a <a href="../../../../../org/apache/commons/rdf/api/Quad.html" title="interface in org.apache.commons.rdf.api"><code>Quad</code></a> MUST NOT be equal to a <a href="../../../../../org/apache/commons/rdf/api/Triple.html" title="interface in org.apache.commons.rdf.api"><code>Triple</code></a>, even if
+ this Quad's <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getGraphName--"><code>getGraphName()</code></a> is <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#empty--" title="class or interface in java.util"><code>Optional.empty()</code></a>. To test
+ triple-like equivalence, callers can use:
+ </p>
+
+ <pre>
+ Quad q1;
+ Triple t2;
+ q1.asTriple().equals(t2));
+ </pre></div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
+<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a></code>&nbsp;in class&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>other</code> - Another object</dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>true if other is a Quad and is equal to this</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang"><code>Object.equals(Object)</code></a></dd>
+</dl>
+</li>
+</ul>
+<a name="hashCode--">
+<!--   -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>hashCode</h4>
+<pre>int&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/Quad.html#line.238">hashCode</a>()</pre>
+<div class="block">Calculate a hash code for this Quad.
+ <p>
+ The returned hash code MUST be equal to the result of
+ <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Objects.html?is-external=true#hash-java.lang.Object...-" title="class or interface in java.util"><code>Objects.hash(Object...)</code></a> with the arguments <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getSubject--"><code>getSubject()</code></a>,
+ <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getPredicate--"><code>getPredicate()</code></a>, <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getObject--"><code>getObject()</code></a>, <a href="../../../../../org/apache/commons/rdf/api/Quad.html#getGraphName--"><code>getGraphName()</code></a>.
+ <p>
+ This method MUST be implemented in conjunction with
+ <a href="../../../../../org/apache/commons/rdf/api/Quad.html#equals-java.lang.Object-"><code>equals(Object)</code></a> so that two equal <a href="../../../../../org/apache/commons/rdf/api/Quad.html" title="interface in org.apache.commons.rdf.api"><code>Quad</code></a>s produce the same
+ hash code.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
+<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a></code>&nbsp;in class&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>a hash code value for this Quad.</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang"><code>Object.hashCode()</code></a>, 
+<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Objects.html?is-external=true#hash-java.lang.Object...-" title="class or interface in java.util"><code>Objects.hash(Object...)</code></a></dd>
+</dl>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+</div>
+<!-- ========= END OF CLASS DATA ========= -->
+<!-- ======= START OF BOTTOM NAVBAR ====== -->
+<div class="bottomNav"><a name="navbar.bottom">
+<!--   -->
+</a>
+<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div>
+<a name="navbar.bottom.firstrow">
+<!--   -->
+</a>
+<ul class="navList" title="Navigation">
+<li><a href="../../../../../overview-summary.html">Overview</a></li>
+<li><a href="package-summary.html">Package</a></li>
+<li class="navBarCell1Rev">Class</li>
+<li><a href="class-use/Quad.html">Use</a></li>
+<li><a href="package-tree.html">Tree</a></li>
+<li><a href="../../../../../deprecated-list.html">Deprecated</a></li>
+<li><a href="../../../../../index-all.html">Index</a></li>
+<li><a href="../../../../../help-doc.html">Help</a></li>
+</ul>
+</div>
+<div class="subNav">
+<ul class="navList">
+<li><a href="../../../../../org/apache/commons/rdf/api/Literal.html" title="interface in org.apache.commons.rdf.api"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
+<li><a href="../../../../../org/apache/commons/rdf/api/QuadLike.html" title="interface in org.apache.commons.rdf.api"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
+</ul>
+<ul class="navList">
+<li><a href="../../../../../index.html?org/apache/commons/rdf/api/Quad.html" target="_top">Frames</a></li>
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+<ul class="navList" id="allclasses_navbar_bottom">
+<li><a href="../../../../../allclasses-noframe.html">All&nbsp;Classes</a></li>
+</ul>
+<div>
+<script type="text/javascript"><!--
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+  if(window==top) {
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+<ul class="subNavList">
+<li>Summary:&nbsp;</li>
+<li>Nested&nbsp;|&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
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+<li><a href="#method.summary">Method</a></li>
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+<ul class="subNavList">
+<li>Detail:&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
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+</ul>
+</div>
+<a name="skip.navbar.bottom">
+<!--   -->
+</a></div>
+<!-- ======== END OF BOTTOM NAVBAR ======= -->
+<p class="legalCopy"><small>Copyright &#169; 2015&#x2013;2016 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p>
+</body>
+</html>
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+<!-- NewPage -->
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+<!-- Generated by javadoc -->
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+<title>QuadLike (Commons RDF 0.4.0-incubating-SNAPSHOT API)</title>
+<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
+<script type="text/javascript" src="../../../../../script.js"></script>
+</head>
+<body>
+<script type="text/javascript"><!--
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+        if (location.href.indexOf('is-external=true') == -1) {
+            parent.document.title="QuadLike (Commons RDF 0.4.0-incubating-SNAPSHOT API)";
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+<a name="navbar.top.firstrow">
+<!--   -->
+</a>
+<ul class="navList" title="Navigation">
+<li><a href="../../../../../overview-summary.html">Overview</a></li>
+<li><a href="package-summary.html">Package</a></li>
+<li class="navBarCell1Rev">Class</li>
+<li><a href="class-use/QuadLike.html">Use</a></li>
+<li><a href="package-tree.html">Tree</a></li>
+<li><a href="../../../../../deprecated-list.html">Deprecated</a></li>
+<li><a href="../../../../../index-all.html">Index</a></li>
+<li><a href="../../../../../help-doc.html">Help</a></li>
+</ul>
+</div>
+<div class="subNav">
+<ul class="navList">
+<li><a href="../../../../../org/apache/commons/rdf/api/Quad.html" title="interface in org.apache.commons.rdf.api"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
+<li><a href="../../../../../org/apache/commons/rdf/api/RDF.html" title="interface in org.apache.commons.rdf.api"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
+</ul>
+<ul class="navList">
+<li><a href="../../../../../index.html?org/apache/commons/rdf/api/QuadLike.html" target="_top">Frames</a></li>
+<li><a href="QuadLike.html" target="_top">No&nbsp;Frames</a></li>
+</ul>
+<ul class="navList" id="allclasses_navbar_top">
+<li><a href="../../../../../allclasses-noframe.html">All&nbsp;Classes</a></li>
+</ul>
+<div>
+<script type="text/javascript"><!--
+  allClassesLink = document.getElementById("allclasses_navbar_top");
+  if(window==top) {
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+    allClassesLink.style.display = "none";
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+</script>
+</div>
+<div>
+<ul class="subNavList">
+<li>Summary:&nbsp;</li>
+<li>Nested&nbsp;|&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
+<li>Constr&nbsp;|&nbsp;</li>
+<li><a href="#method.summary">Method</a></li>
+</ul>
+<ul class="subNavList">
+<li>Detail:&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
+<li>Constr&nbsp;|&nbsp;</li>
+<li><a href="#method.detail">Method</a></li>
+</ul>
+</div>
+<a name="skip.navbar.top">
+<!--   -->
+</a></div>
+<!-- ========= END OF TOP NAVBAR ========= -->
+<!-- ======== START OF CLASS DATA ======== -->
+<div class="header">
+<div class="subTitle">org.apache.commons.rdf.api</div>
+<h2 title="Interface QuadLike" class="title">Interface QuadLike&lt;G extends <a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api">RDFTerm</a>&gt;</h2>
+</div>
+<div class="contentContainer">
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<dl>
+<dt>All Superinterfaces:</dt>
+<dd><a href="../../../../../org/apache/commons/rdf/api/TripleLike.html" title="interface in org.apache.commons.rdf.api">TripleLike</a></dd>
+</dl>
+<dl>
+<dt>All Known Subinterfaces:</dt>
+<dd><a href="../../../../../org/apache/commons/rdf/api/Quad.html" title="interface in org.apache.commons.rdf.api">Quad</a></dd>
+</dl>
+<hr>
+<br>
+<pre>public interface <a href="../../../../../src-html/org/apache/commons/rdf/api/QuadLike.html#line.40">QuadLike</a>&lt;G extends <a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api">RDFTerm</a>&gt;
+extends <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html" title="interface in org.apache.commons.rdf.api">TripleLike</a></pre>
+<div class="block">A generalised "quad-like" interface, extended by <a href="../../../../../org/apache/commons/rdf/api/Quad.html" title="interface in org.apache.commons.rdf.api"><code>Quad</code></a>.
+ <p>
+ A QuadLike statement has at least a <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getSubject--"><code>TripleLike.getSubject()</code></a>,
+ <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getPredicate--"><code>TripleLike.getPredicate()</code></a>, <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getObject--"><code>TripleLike.getObject()</code></a> and <a href="../../../../../org/apache/commons/rdf/api/QuadLike.html#getGraphName--"><code>getGraphName()</code></a>,
+ but unlike a <a href="../../../../../org/apache/commons/rdf/api/Quad.html" title="interface in org.apache.commons.rdf.api"><code>Quad</code></a> does not have a formalised
+ <a href="../../../../../org/apache/commons/rdf/api/Quad.html#equals-java.lang.Object-"><code>Quad.equals(Object)</code></a> or <a href="../../../../../org/apache/commons/rdf/api/Quad.html#hashCode--"><code>Quad.hashCode()</code></a> semantics and is not
+ required to be <em>immutable</em> or <em>thread-safe</em>. This interface can
+ also be used for <em>generalised quads</em> (e.g. a <a href="../../../../../org/apache/commons/rdf/api/BlankNode.html" title="interface in org.apache.commons.rdf.api"><code>BlankNode</code></a> as
+ predicate).
+ <p>
+ Implementations should specialise which specific <a href="../../../../../org/apache/commons/rdf/api/RDFTerm.html" title="interface in org.apache.commons.rdf.api"><code>RDFTerm</code></a> types they
+ return by overriding <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getSubject--"><code>TripleLike.getSubject()</code></a>, <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getPredicate--"><code>TripleLike.getPredicate()</code></a>,
+ <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getObject--"><code>TripleLike.getObject()</code></a> and <a href="../../../../../org/apache/commons/rdf/api/QuadLike.html#getGraphName--"><code>getGraphName()</code></a>.</div>
+<dl>
+<dt><span class="simpleTagLabel">Since:</span></dt>
+<dd>0.3.0-incubating</dd>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../../../org/apache/commons/rdf/api/Quad.html" title="interface in org.apache.commons.rdf.api"><code>Quad</code></a></dd>
+</dl>
+</li>
+</ul>
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+<div class="summary">
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+<li class="blockList">
+<!-- ========== METHOD SUMMARY =========== -->
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+<!--   -->
+</a>
+<h3>Method Summary</h3>
+<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr id="i0" class="altColor">
+<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a>&lt;<a href="../../../../../org/apache/commons/rdf/api/QuadLike.html" title="type parameter in QuadLike">G</a>&gt;</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/rdf/api/QuadLike.html#getGraphName--">getGraphName</a></span>()</code>
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+<code><a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getObject--">getObject</a>, <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getPredicate--">getPredicate</a>, <a href="../../../../../org/apache/commons/rdf/api/TripleLike.html#getSubject--">getSubject</a></code></li>
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+</li>
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+</li>
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+<ul class="blockListLast">
+<li class="blockList">
+<h4>getGraphName</h4>
+<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a>&lt;<a href="../../../../../org/apache/commons/rdf/api/QuadLike.html" title="type parameter in QuadLike">G</a>&gt;&nbsp;<a href="../../../../../src-html/org/apache/commons/rdf/api/QuadLike.html#line.54">getGraphName</a>()</pre>
+<div class="block">The graph name (graph label) of this statement, if present.
+ <p>
+ If <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#isPresent--" title="class or interface in java.util"><code>Optional.isPresent()</code></a>, then the <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#get--" title="class or interface in java.util"><code>Optional.get()</code></a> indicate
+ the graph name of this statement. If the graph name is not present,e.g.
+ the value is <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#empty--" title="class or interface in java.util"><code>Optional.empty()</code></a>, it indicates that this Quad is in
+ the default graph.</div>
+<dl>
+<dt><span class="returnLabel">Returns:</span></dt>
+<dd>If <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#isPresent--" title="class or interface in java.util"><code>Optional.isPresent()</code></a>, the graph name of this quad,
+         otherwise <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true#empty--" title="class or interface in java.util"><code>Optional.empty()</code></a>, indicating the default graph.
+         The graph name is typically an <a href="../../../../../org/apache/commons/rdf/api/IRI.html" title="interface in org.apache.commons.rdf.api"><code>IRI</code></a> or <a href="../../../../../org/apache/commons/rdf/api/BlankNode.html" title="interface in org.apache.commons.rdf.api"><code>BlankNode</code></a>.</dd>
+</dl>
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