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From st...@apache.org
Subject svn commit: r996832 [21/30] - in /websites/production/commonsrdf/content: ./ apidocs/ apidocs/org/apache/commons/rdf/api/ apidocs/org/apache/commons/rdf/api/class-use/ apidocs/org/apache/commons/rdf/simple/ apidocs/org/apache/commons/rdf/simple/class-u...
Date Wed, 07 Sep 2016 02:26:22 GMT
Added: websites/production/commonsrdf/content/xref-test/org/apache/commons/rdf/api/AbstractGraphTest.html
==============================================================================
--- websites/production/commonsrdf/content/xref-test/org/apache/commons/rdf/api/AbstractGraphTest.html (added)
+++ websites/production/commonsrdf/content/xref-test/org/apache/commons/rdf/api/AbstractGraphTest.html Wed Sep  7 02:26:20 2016
@@ -0,0 +1,498 @@
+<!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" xml:lang="en" lang="en">
+<head><meta http-equiv="content-type" content="text/html; charset=UTF-8" />
+<title>AbstractGraphTest xref</title>
+<link type="text/css" rel="stylesheet" href="../../../../../stylesheet.css" />
+</head>
+<body>
+<div id="overview"><a href="../../../../../../testapidocs/org/apache/commons/rdf/api/AbstractGraphTest.html">View Javadoc</a></div><pre>
+<a class="jxr_linenumber" name="L1" href="#L1">1</a>   <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L2" href="#L2">2</a>   <em class="jxr_javadoccomment"> * Licensed to the Apache Software Foundation (ASF) under one</em>
+<a class="jxr_linenumber" name="L3" href="#L3">3</a>   <em class="jxr_javadoccomment"> * or more contributor license agreements. See the NOTICE file</em>
+<a class="jxr_linenumber" name="L4" href="#L4">4</a>   <em class="jxr_javadoccomment"> * distributed with this work for additional information</em>
+<a class="jxr_linenumber" name="L5" href="#L5">5</a>   <em class="jxr_javadoccomment"> * regarding copyright ownership. The ASF licenses this file</em>
+<a class="jxr_linenumber" name="L6" href="#L6">6</a>   <em class="jxr_javadoccomment"> * to you under the Apache License, Version 2.0 (the</em>
+<a class="jxr_linenumber" name="L7" href="#L7">7</a>   <em class="jxr_javadoccomment"> * "License"); you may not use this file except in compliance</em>
+<a class="jxr_linenumber" name="L8" href="#L8">8</a>   <em class="jxr_javadoccomment"> * with the License.  You may obtain a copy of the License at</em>
+<a class="jxr_linenumber" name="L9" href="#L9">9</a>   <em class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L10" href="#L10">10</a>  <em class="jxr_javadoccomment"> *     <a href="http://www.apache.org/licenses/LICENSE-2." target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.</a>0</em>
+<a class="jxr_linenumber" name="L11" href="#L11">11</a>  <em class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L12" href="#L12">12</a>  <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em>
+<a class="jxr_linenumber" name="L13" href="#L13">13</a>  <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
+<a class="jxr_linenumber" name="L14" href="#L14">14</a>  <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
+<a class="jxr_linenumber" name="L15" href="#L15">15</a>  <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em>
+<a class="jxr_linenumber" name="L16" href="#L16">16</a>  <em class="jxr_javadoccomment"> * limitations under the License.</em>
+<a class="jxr_linenumber" name="L17" href="#L17">17</a>  <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L18" href="#L18">18</a>  <strong class="jxr_keyword">package</strong> org.apache.commons.rdf.api;
+<a class="jxr_linenumber" name="L19" href="#L19">19</a>  
+<a class="jxr_linenumber" name="L20" href="#L20">20</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.junit.Assert.assertEquals;
+<a class="jxr_linenumber" name="L21" href="#L21">21</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.junit.Assert.assertFalse;
+<a class="jxr_linenumber" name="L22" href="#L22">22</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.junit.Assert.assertNotNull;
+<a class="jxr_linenumber" name="L23" href="#L23">23</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.junit.Assert.assertTrue;
+<a class="jxr_linenumber" name="L24" href="#L24">24</a>  
+<a class="jxr_linenumber" name="L25" href="#L25">25</a>  <strong class="jxr_keyword">import</strong> java.util.ArrayList;
+<a class="jxr_linenumber" name="L26" href="#L26">26</a>  <strong class="jxr_keyword">import</strong> java.util.HashSet;
+<a class="jxr_linenumber" name="L27" href="#L27">27</a>  <strong class="jxr_keyword">import</strong> java.util.Iterator;
+<a class="jxr_linenumber" name="L28" href="#L28">28</a>  <strong class="jxr_keyword">import</strong> java.util.List;
+<a class="jxr_linenumber" name="L29" href="#L29">29</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
+<a class="jxr_linenumber" name="L30" href="#L30">30</a>  <strong class="jxr_keyword">import</strong> java.util.Optional;
+<a class="jxr_linenumber" name="L31" href="#L31">31</a>  <strong class="jxr_keyword">import</strong> java.util.Set;
+<a class="jxr_linenumber" name="L32" href="#L32">32</a>  <strong class="jxr_keyword">import</strong> java.util.UUID;
+<a class="jxr_linenumber" name="L33" href="#L33">33</a>  <strong class="jxr_keyword">import</strong> java.util.concurrent.ConcurrentHashMap;
+<a class="jxr_linenumber" name="L34" href="#L34">34</a>  
+<a class="jxr_linenumber" name="L35" href="#L35">35</a>  <strong class="jxr_keyword">import</strong> org.junit.Assume;
+<a class="jxr_linenumber" name="L36" href="#L36">36</a>  <strong class="jxr_keyword">import</strong> org.junit.Before;
+<a class="jxr_linenumber" name="L37" href="#L37">37</a>  <strong class="jxr_keyword">import</strong> org.junit.Test;
+<a class="jxr_linenumber" name="L38" href="#L38">38</a>  
+<a class="jxr_linenumber" name="L39" href="#L39">39</a>  <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L40" href="#L40">40</a>  <em class="jxr_javadoccomment"> * Test Graph implementation</em>
+<a class="jxr_linenumber" name="L41" href="#L41">41</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="L42" href="#L42">42</a>  <em class="jxr_javadoccomment"> * To add to your implementation's tests, create a subclass with a name ending</em>
+<a class="jxr_linenumber" name="L43" href="#L43">43</a>  <em class="jxr_javadoccomment"> * in &lt;code&gt;Test&lt;/code&gt; and provide {@link #createFactory()} which minimally</em>
+<a class="jxr_linenumber" name="L44" href="#L44">44</a>  <em class="jxr_javadoccomment"> * must support {@link RDFTermFactory#createGraph()} and</em>
+<a class="jxr_linenumber" name="L45" href="#L45">45</a>  <em class="jxr_javadoccomment"> * {@link RDFTermFactory#createIRI(String)}, but ideally support all operations.</em>
+<a class="jxr_linenumber" name="L46" href="#L46">46</a>  <em class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L47" href="#L47">47</a>  <em class="jxr_javadoccomment"> * @see Graph</em>
+<a class="jxr_linenumber" name="L48" href="#L48">48</a>  <em class="jxr_javadoccomment"> * @see RDFTermFactory</em>
+<a class="jxr_linenumber" name="L49" href="#L49">49</a>  <em class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L50" href="#L50">50</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/commons/rdf/api/AbstractGraphTest.html">AbstractGraphTest</a> {
+<a class="jxr_linenumber" name="L51" href="#L51">51</a>  
+<a class="jxr_linenumber" name="L52" href="#L52">52</a>      <strong class="jxr_keyword">protected</strong> RDFTermFactory factory;
+<a class="jxr_linenumber" name="L53" href="#L53">53</a>      <strong class="jxr_keyword">protected</strong> Graph graph;
+<a class="jxr_linenumber" name="L54" href="#L54">54</a>      <strong class="jxr_keyword">protected</strong> IRI alice;
+<a class="jxr_linenumber" name="L55" href="#L55">55</a>      <strong class="jxr_keyword">protected</strong> IRI bob;
+<a class="jxr_linenumber" name="L56" href="#L56">56</a>      <strong class="jxr_keyword">protected</strong> IRI name;
+<a class="jxr_linenumber" name="L57" href="#L57">57</a>      <strong class="jxr_keyword">protected</strong> IRI knows;
+<a class="jxr_linenumber" name="L58" href="#L58">58</a>      <strong class="jxr_keyword">protected</strong> IRI member;
+<a class="jxr_linenumber" name="L59" href="#L59">59</a>      <strong class="jxr_keyword">protected</strong> BlankNode bnode1;
+<a class="jxr_linenumber" name="L60" href="#L60">60</a>      <strong class="jxr_keyword">protected</strong> BlankNode bnode2;
+<a class="jxr_linenumber" name="L61" href="#L61">61</a>      <strong class="jxr_keyword">protected</strong> Literal aliceName;
+<a class="jxr_linenumber" name="L62" href="#L62">62</a>      <strong class="jxr_keyword">protected</strong> Literal bobName;
+<a class="jxr_linenumber" name="L63" href="#L63">63</a>      <strong class="jxr_keyword">protected</strong> Literal secretClubName;
+<a class="jxr_linenumber" name="L64" href="#L64">64</a>      <strong class="jxr_keyword">protected</strong> Literal companyName;
+<a class="jxr_linenumber" name="L65" href="#L65">65</a>      <strong class="jxr_keyword">protected</strong> Triple bobNameTriple;
+<a class="jxr_linenumber" name="L66" href="#L66">66</a>  
+<a class="jxr_linenumber" name="L67" href="#L67">67</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> RDFTermFactory createFactory();
+<a class="jxr_linenumber" name="L68" href="#L68">68</a>  
+<a class="jxr_linenumber" name="L69" href="#L69">69</a>      @Before
+<a class="jxr_linenumber" name="L70" href="#L70">70</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> createGraphAndAdd() {
+<a class="jxr_linenumber" name="L71" href="#L71">71</a>          factory = createFactory();
+<a class="jxr_linenumber" name="L72" href="#L72">72</a>          graph = factory.createGraph();
+<a class="jxr_linenumber" name="L73" href="#L73">73</a>          assertEquals(0, graph.size());
+<a class="jxr_linenumber" name="L74" href="#L74">74</a>  
+<a class="jxr_linenumber" name="L75" href="#L75">75</a>          alice = factory.createIRI(<span class="jxr_string">"http://example.com/alice"</span>);
+<a class="jxr_linenumber" name="L76" href="#L76">76</a>          bob = factory.createIRI(<span class="jxr_string">"http://example.com/bob"</span>);
+<a class="jxr_linenumber" name="L77" href="#L77">77</a>          name = factory.createIRI(<span class="jxr_string">"http://xmlns.com/foaf/0.1/name"</span>);
+<a class="jxr_linenumber" name="L78" href="#L78">78</a>          knows = factory.createIRI(<span class="jxr_string">"http://xmlns.com/foaf/0.1/knows"</span>);
+<a class="jxr_linenumber" name="L79" href="#L79">79</a>          member = factory.createIRI(<span class="jxr_string">"http://xmlns.com/foaf/0.1/member"</span>);
+<a class="jxr_linenumber" name="L80" href="#L80">80</a>          <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="L81" href="#L81">81</a>              bnode1 = factory.createBlankNode(<span class="jxr_string">"org1"</span>);
+<a class="jxr_linenumber" name="L82" href="#L82">82</a>              bnode2 = factory.createBlankNode(<span class="jxr_string">"org2"</span>);
+<a class="jxr_linenumber" name="L83" href="#L83">83</a>          } <strong class="jxr_keyword">catch</strong> (UnsupportedOperationException ex) {
+<a class="jxr_linenumber" name="L84" href="#L84">84</a>              <em class="jxr_comment">// leave as null</em>
+<a class="jxr_linenumber" name="L85" href="#L85">85</a>          }
+<a class="jxr_linenumber" name="L86" href="#L86">86</a>  
+<a class="jxr_linenumber" name="L87" href="#L87">87</a>          <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="L88" href="#L88">88</a>              secretClubName = factory.createLiteral(<span class="jxr_string">"The Secret Club"</span>);
+<a class="jxr_linenumber" name="L89" href="#L89">89</a>              companyName = factory.createLiteral(<span class="jxr_string">"A company"</span>);
+<a class="jxr_linenumber" name="L90" href="#L90">90</a>              aliceName = factory.createLiteral(<span class="jxr_string">"Alice"</span>);
+<a class="jxr_linenumber" name="L91" href="#L91">91</a>              bobName = factory.createLiteral(<span class="jxr_string">"Bob"</span>, <span class="jxr_string">"en-US"</span>);
+<a class="jxr_linenumber" name="L92" href="#L92">92</a>          } <strong class="jxr_keyword">catch</strong> (UnsupportedOperationException ex) {
+<a class="jxr_linenumber" name="L93" href="#L93">93</a>              <em class="jxr_comment">// leave as null</em>
+<a class="jxr_linenumber" name="L94" href="#L94">94</a>          }
+<a class="jxr_linenumber" name="L95" href="#L95">95</a>  
+<a class="jxr_linenumber" name="L96" href="#L96">96</a>          <strong class="jxr_keyword">if</strong> (aliceName != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L97" href="#L97">97</a>              graph.add(alice, name, aliceName);
+<a class="jxr_linenumber" name="L98" href="#L98">98</a>          }
+<a class="jxr_linenumber" name="L99" href="#L99">99</a>          graph.add(alice, knows, bob);
+<a class="jxr_linenumber" name="L100" href="#L100">100</a> 
+<a class="jxr_linenumber" name="L101" href="#L101">101</a>         <strong class="jxr_keyword">if</strong> (bnode1 != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L102" href="#L102">102</a>             graph.add(alice, member, bnode1);
+<a class="jxr_linenumber" name="L103" href="#L103">103</a>         }
+<a class="jxr_linenumber" name="L104" href="#L104">104</a> 
+<a class="jxr_linenumber" name="L105" href="#L105">105</a>         <strong class="jxr_keyword">if</strong> (bobName != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L106" href="#L106">106</a>             <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="L107" href="#L107">107</a>                 bobNameTriple = factory.createTriple(bob, name, bobName);
+<a class="jxr_linenumber" name="L108" href="#L108">108</a>             } <strong class="jxr_keyword">catch</strong> (UnsupportedOperationException ex) {
+<a class="jxr_linenumber" name="L109" href="#L109">109</a>                 <em class="jxr_comment">// leave as null</em>
+<a class="jxr_linenumber" name="L110" href="#L110">110</a>             }
+<a class="jxr_linenumber" name="L111" href="#L111">111</a>             <strong class="jxr_keyword">if</strong> (bobNameTriple != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L112" href="#L112">112</a>                 graph.add(bobNameTriple);
+<a class="jxr_linenumber" name="L113" href="#L113">113</a>             }
+<a class="jxr_linenumber" name="L114" href="#L114">114</a>         }
+<a class="jxr_linenumber" name="L115" href="#L115">115</a>         <strong class="jxr_keyword">if</strong> (bnode1 != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L116" href="#L116">116</a>             graph.add(factory.createTriple(bob, member, bnode1));
+<a class="jxr_linenumber" name="L117" href="#L117">117</a>             graph.add(factory.createTriple(bob, member, bnode2));
+<a class="jxr_linenumber" name="L118" href="#L118">118</a>             <strong class="jxr_keyword">if</strong> (secretClubName != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L119" href="#L119">119</a>                 graph.add(bnode1, name, secretClubName);
+<a class="jxr_linenumber" name="L120" href="#L120">120</a>                 graph.add(bnode2, name, companyName);
+<a class="jxr_linenumber" name="L121" href="#L121">121</a>             }
+<a class="jxr_linenumber" name="L122" href="#L122">122</a>         }
+<a class="jxr_linenumber" name="L123" href="#L123">123</a>     }
+<a class="jxr_linenumber" name="L124" href="#L124">124</a> 
+<a class="jxr_linenumber" name="L125" href="#L125">125</a>  
+<a class="jxr_linenumber" name="L126" href="#L126">126</a>     @Test
+<a class="jxr_linenumber" name="L127" href="#L127">127</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> size() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L128" href="#L128">128</a>         assertTrue(graph.size() &gt; 0);
+<a class="jxr_linenumber" name="L129" href="#L129">129</a>         Assume.assumeNotNull(bnode1, bnode2, aliceName, bobName, secretClubName,
+<a class="jxr_linenumber" name="L130" href="#L130">130</a>                 companyName, bobNameTriple);
+<a class="jxr_linenumber" name="L131" href="#L131">131</a>         <em class="jxr_comment">// Can only reliably predict size if we could create all triples</em>
+<a class="jxr_linenumber" name="L132" href="#L132">132</a>         assertEquals(8, graph.size());
+<a class="jxr_linenumber" name="L133" href="#L133">133</a>     }
+<a class="jxr_linenumber" name="L134" href="#L134">134</a> 
+<a class="jxr_linenumber" name="L135" href="#L135">135</a>     @Test
+<a class="jxr_linenumber" name="L136" href="#L136">136</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> iterate() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L137" href="#L137">137</a> 
+<a class="jxr_linenumber" name="L138" href="#L138">138</a>         Assume.assumeTrue(graph.size() &gt; 0);
+<a class="jxr_linenumber" name="L139" href="#L139">139</a> 
+<a class="jxr_linenumber" name="L140" href="#L140">140</a>         List&lt;Triple&gt; triples = <strong class="jxr_keyword">new</strong> ArrayList&lt;&gt;();
+<a class="jxr_linenumber" name="L141" href="#L141">141</a>         <strong class="jxr_keyword">for</strong> (Triple t : graph.iterate()) {
+<a class="jxr_linenumber" name="L142" href="#L142">142</a>             triples.add(t);
+<a class="jxr_linenumber" name="L143" href="#L143">143</a>         }
+<a class="jxr_linenumber" name="L144" href="#L144">144</a>         assertEquals(graph.size(), triples.size());
+<a class="jxr_linenumber" name="L145" href="#L145">145</a>         <strong class="jxr_keyword">if</strong> (bobNameTriple != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L146" href="#L146">146</a>             assertTrue(triples.contains(bobNameTriple));
+<a class="jxr_linenumber" name="L147" href="#L147">147</a>         }
+<a class="jxr_linenumber" name="L148" href="#L148">148</a> 
+<a class="jxr_linenumber" name="L149" href="#L149">149</a>         <em class="jxr_comment">// aborted iteration</em>
+<a class="jxr_linenumber" name="L150" href="#L150">150</a>         Iterator&lt;Triple&gt; it = graph.iterate().iterator();
+<a class="jxr_linenumber" name="L151" href="#L151">151</a> 
+<a class="jxr_linenumber" name="L152" href="#L152">152</a>         assertTrue(it.hasNext());
+<a class="jxr_linenumber" name="L153" href="#L153">153</a>         it.next();
+<a class="jxr_linenumber" name="L154" href="#L154">154</a> 
+<a class="jxr_linenumber" name="L155" href="#L155">155</a>         <em class="jxr_comment">// second iteration - should start from fresh and</em>
+<a class="jxr_linenumber" name="L156" href="#L156">156</a>         <em class="jxr_comment">// get the same count</em>
+<a class="jxr_linenumber" name="L157" href="#L157">157</a>         <strong class="jxr_keyword">long</strong> count = 0;
+<a class="jxr_linenumber" name="L158" href="#L158">158</a>         Iterable&lt;Triple&gt; iterable = graph.iterate();
+<a class="jxr_linenumber" name="L159" href="#L159">159</a>         <strong class="jxr_keyword">for</strong> (Triple t : iterable) {
+<a class="jxr_linenumber" name="L160" href="#L160">160</a>             count++;
+<a class="jxr_linenumber" name="L161" href="#L161">161</a>         }
+<a class="jxr_linenumber" name="L162" href="#L162">162</a>         assertEquals(graph.size(), count);
+<a class="jxr_linenumber" name="L163" href="#L163">163</a>     }
+<a class="jxr_linenumber" name="L164" href="#L164">164</a> 
+<a class="jxr_linenumber" name="L165" href="#L165">165</a>     @Test
+<a class="jxr_linenumber" name="L166" href="#L166">166</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> iterateFilter() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L167" href="#L167">167</a>         List&lt;RDFTerm&gt; friends = <strong class="jxr_keyword">new</strong> ArrayList&lt;&gt;();
+<a class="jxr_linenumber" name="L168" href="#L168">168</a>         IRI alice = factory.createIRI(<span class="jxr_string">"http://example.com/alice"</span>);
+<a class="jxr_linenumber" name="L169" href="#L169">169</a>         IRI knows = factory.createIRI(<span class="jxr_string">"http://xmlns.com/foaf/0.1/knows"</span>);
+<a class="jxr_linenumber" name="L170" href="#L170">170</a>         <strong class="jxr_keyword">for</strong> (Triple t : graph.iterate(alice, knows, <strong class="jxr_keyword">null</strong>)) {
+<a class="jxr_linenumber" name="L171" href="#L171">171</a>             friends.add(t.getObject());
+<a class="jxr_linenumber" name="L172" href="#L172">172</a>         }
+<a class="jxr_linenumber" name="L173" href="#L173">173</a>         assertEquals(1, friends.size());
+<a class="jxr_linenumber" name="L174" href="#L174">174</a>         assertEquals(bob, friends.get(0));
+<a class="jxr_linenumber" name="L175" href="#L175">175</a> 
+<a class="jxr_linenumber" name="L176" href="#L176">176</a>         <em class="jxr_comment">// .. can we iterate over zero hits?</em>
+<a class="jxr_linenumber" name="L177" href="#L177">177</a>         assertFalse(graph.iterate(bob, knows, alice).iterator().hasNext());
+<a class="jxr_linenumber" name="L178" href="#L178">178</a>     }
+<a class="jxr_linenumber" name="L179" href="#L179">179</a> 
+<a class="jxr_linenumber" name="L180" href="#L180">180</a>     @Test
+<a class="jxr_linenumber" name="L181" href="#L181">181</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> contains() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L182" href="#L182">182</a>         assertFalse(graph.contains(bob, knows, alice)); <em class="jxr_comment">// or so he claims..</em>
+<a class="jxr_linenumber" name="L183" href="#L183">183</a> 
+<a class="jxr_linenumber" name="L184" href="#L184">184</a>         assertTrue(graph.contains(alice, knows, bob));
+<a class="jxr_linenumber" name="L185" href="#L185">185</a> 
+<a class="jxr_linenumber" name="L186" href="#L186">186</a>         Optional&lt;? <strong class="jxr_keyword">extends</strong> Triple&gt; first = graph.stream().skip(4)
+<a class="jxr_linenumber" name="L187" href="#L187">187</a>                 .findFirst();
+<a class="jxr_linenumber" name="L188" href="#L188">188</a>         Assume.assumeTrue(first.isPresent());
+<a class="jxr_linenumber" name="L189" href="#L189">189</a>         Triple existingTriple = first.get();
+<a class="jxr_linenumber" name="L190" href="#L190">190</a>         assertTrue(graph.contains(existingTriple));
+<a class="jxr_linenumber" name="L191" href="#L191">191</a> 
+<a class="jxr_linenumber" name="L192" href="#L192">192</a>         Triple nonExistingTriple = factory.createTriple(bob, knows, alice);
+<a class="jxr_linenumber" name="L193" href="#L193">193</a>         assertFalse(graph.contains(nonExistingTriple));
+<a class="jxr_linenumber" name="L194" href="#L194">194</a> 
+<a class="jxr_linenumber" name="L195" href="#L195">195</a>         Triple triple = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="L196" href="#L196">196</a>         <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="L197" href="#L197">197</a>             triple = factory.createTriple(alice, knows, bob);
+<a class="jxr_linenumber" name="L198" href="#L198">198</a>         } <strong class="jxr_keyword">catch</strong> (UnsupportedOperationException ex) {
+<a class="jxr_linenumber" name="L199" href="#L199">199</a>         }
+<a class="jxr_linenumber" name="L200" href="#L200">200</a>         <strong class="jxr_keyword">if</strong> (triple != <strong class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L201" href="#L201">201</a>             <em class="jxr_comment">// FIXME: Should not this always be true?</em>
+<a class="jxr_linenumber" name="L202" href="#L202">202</a>             <em class="jxr_comment">// assertTrue(graph.contains(triple));</em>
+<a class="jxr_linenumber" name="L203" href="#L203">203</a>         }
+<a class="jxr_linenumber" name="L204" href="#L204">204</a>     }
+<a class="jxr_linenumber" name="L205" href="#L205">205</a> 
+<a class="jxr_linenumber" name="L206" href="#L206">206</a>     @Test
+<a class="jxr_linenumber" name="L207" href="#L207">207</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> remove() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L208" href="#L208">208</a>         <strong class="jxr_keyword">long</strong> fullSize = graph.size();
+<a class="jxr_linenumber" name="L209" href="#L209">209</a>         graph.remove(alice, knows, bob);
+<a class="jxr_linenumber" name="L210" href="#L210">210</a>         <strong class="jxr_keyword">long</strong> shrunkSize = graph.size();
+<a class="jxr_linenumber" name="L211" href="#L211">211</a>         assertEquals(1, fullSize - shrunkSize);
+<a class="jxr_linenumber" name="L212" href="#L212">212</a> 
+<a class="jxr_linenumber" name="L213" href="#L213">213</a>         graph.remove(alice, knows, bob);
+<a class="jxr_linenumber" name="L214" href="#L214">214</a>         assertEquals(shrunkSize, graph.size()); <em class="jxr_comment">// unchanged</em>
+<a class="jxr_linenumber" name="L215" href="#L215">215</a> 
+<a class="jxr_linenumber" name="L216" href="#L216">216</a>         graph.add(alice, knows, bob);
+<a class="jxr_linenumber" name="L217" href="#L217">217</a>         graph.add(alice, knows, bob);
+<a class="jxr_linenumber" name="L218" href="#L218">218</a>         graph.add(alice, knows, bob);
+<a class="jxr_linenumber" name="L219" href="#L219">219</a>         <em class="jxr_comment">// Undetermined size at this point -- but at least it</em>
+<a class="jxr_linenumber" name="L220" href="#L220">220</a>         <em class="jxr_comment">// should be bigger</em>
+<a class="jxr_linenumber" name="L221" href="#L221">221</a>         assertTrue(graph.size() &gt; shrunkSize);
+<a class="jxr_linenumber" name="L222" href="#L222">222</a> 
+<a class="jxr_linenumber" name="L223" href="#L223">223</a>         <em class="jxr_comment">// and after a single remove they should all be gone</em>
+<a class="jxr_linenumber" name="L224" href="#L224">224</a>         graph.remove(alice, knows, bob);
+<a class="jxr_linenumber" name="L225" href="#L225">225</a>         assertEquals(shrunkSize, graph.size());
+<a class="jxr_linenumber" name="L226" href="#L226">226</a> 
+<a class="jxr_linenumber" name="L227" href="#L227">227</a>         Optional&lt;? <strong class="jxr_keyword">extends</strong> Triple&gt; anyTriple = graph.stream().findAny();
+<a class="jxr_linenumber" name="L228" href="#L228">228</a>         Assume.assumeTrue(anyTriple.isPresent());
+<a class="jxr_linenumber" name="L229" href="#L229">229</a> 
+<a class="jxr_linenumber" name="L230" href="#L230">230</a>         Triple otherTriple = anyTriple.get();
+<a class="jxr_linenumber" name="L231" href="#L231">231</a>         graph.remove(otherTriple);
+<a class="jxr_linenumber" name="L232" href="#L232">232</a>         assertEquals(shrunkSize - 1, graph.size());
+<a class="jxr_linenumber" name="L233" href="#L233">233</a>         graph.remove(otherTriple);
+<a class="jxr_linenumber" name="L234" href="#L234">234</a>         assertEquals(shrunkSize - 1, graph.size()); <em class="jxr_comment">// no change</em>
+<a class="jxr_linenumber" name="L235" href="#L235">235</a>         graph.add(otherTriple);
+<a class="jxr_linenumber" name="L236" href="#L236">236</a>         assertEquals(shrunkSize, graph.size());
+<a class="jxr_linenumber" name="L237" href="#L237">237</a>     }
+<a class="jxr_linenumber" name="L238" href="#L238">238</a> 
+<a class="jxr_linenumber" name="L239" href="#L239">239</a>     @Test
+<a class="jxr_linenumber" name="L240" href="#L240">240</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> clear() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L241" href="#L241">241</a>         graph.clear();
+<a class="jxr_linenumber" name="L242" href="#L242">242</a>         assertFalse(graph.contains(alice, knows, bob));
+<a class="jxr_linenumber" name="L243" href="#L243">243</a>         assertEquals(0, graph.size());
+<a class="jxr_linenumber" name="L244" href="#L244">244</a>         graph.clear(); <em class="jxr_comment">// no-op</em>
+<a class="jxr_linenumber" name="L245" href="#L245">245</a>         assertEquals(0, graph.size());
+<a class="jxr_linenumber" name="L246" href="#L246">246</a>     }
+<a class="jxr_linenumber" name="L247" href="#L247">247</a> 
+<a class="jxr_linenumber" name="L248" href="#L248">248</a>     @Test
+<a class="jxr_linenumber" name="L249" href="#L249">249</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> getTriples() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L250" href="#L250">250</a> 
+<a class="jxr_linenumber" name="L251" href="#L251">251</a>         <strong class="jxr_keyword">long</strong> tripleCount = graph.stream().count();
+<a class="jxr_linenumber" name="L252" href="#L252">252</a>         assertTrue(tripleCount &gt; 0);
+<a class="jxr_linenumber" name="L253" href="#L253">253</a>         assertTrue(graph.stream().allMatch(t -&gt; graph.contains(t)));
+<a class="jxr_linenumber" name="L254" href="#L254">254</a>         <em class="jxr_comment">// Check exact count</em>
+<a class="jxr_linenumber" name="L255" href="#L255">255</a>         Assume.assumeNotNull(bnode1, bnode2, aliceName, bobName, secretClubName,
+<a class="jxr_linenumber" name="L256" href="#L256">256</a>                 companyName, bobNameTriple);
+<a class="jxr_linenumber" name="L257" href="#L257">257</a>         assertEquals(8, tripleCount);
+<a class="jxr_linenumber" name="L258" href="#L258">258</a>     }
+<a class="jxr_linenumber" name="L259" href="#L259">259</a> 
+<a class="jxr_linenumber" name="L260" href="#L260">260</a>     @Test
+<a class="jxr_linenumber" name="L261" href="#L261">261</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> getTriplesQuery() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L262" href="#L262">262</a> 
+<a class="jxr_linenumber" name="L263" href="#L263">263</a>         <strong class="jxr_keyword">long</strong> aliceCount = graph.stream(alice, <strong class="jxr_keyword">null</strong>, <strong class="jxr_keyword">null</strong>).count();
+<a class="jxr_linenumber" name="L264" href="#L264">264</a>         assertTrue(aliceCount &gt; 0);
+<a class="jxr_linenumber" name="L265" href="#L265">265</a>         Assume.assumeNotNull(aliceName);
+<a class="jxr_linenumber" name="L266" href="#L266">266</a>         assertEquals(3, aliceCount);
+<a class="jxr_linenumber" name="L267" href="#L267">267</a> 
+<a class="jxr_linenumber" name="L268" href="#L268">268</a>         Assume.assumeNotNull(bnode1, bnode2, bobName, companyName, secretClubName);
+<a class="jxr_linenumber" name="L269" href="#L269">269</a>         assertEquals(4, graph.stream(<strong class="jxr_keyword">null</strong>, name, <strong class="jxr_keyword">null</strong>).count());
+<a class="jxr_linenumber" name="L270" href="#L270">270</a>         Assume.assumeNotNull(bnode1);
+<a class="jxr_linenumber" name="L271" href="#L271">271</a>         assertEquals(3, graph.stream(<strong class="jxr_keyword">null</strong>, member, <strong class="jxr_keyword">null</strong>).count());
+<a class="jxr_linenumber" name="L272" href="#L272">272</a>     }
+<a class="jxr_linenumber" name="L273" href="#L273">273</a> 
+<a class="jxr_linenumber" name="L274" href="#L274">274</a>     @Test
+<a class="jxr_linenumber" name="L275" href="#L275">275</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addBlankNodesFromMultipleGraphs() {
+<a class="jxr_linenumber" name="L276" href="#L276">276</a> 
+<a class="jxr_linenumber" name="L277" href="#L277">277</a>         <strong class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="L278" href="#L278">278</a>         	<em class="jxr_comment">// Create two separate Graph instances</em>
+<a class="jxr_linenumber" name="L279" href="#L279">279</a>             Graph g1 = createGraph1();
+<a class="jxr_linenumber" name="L280" href="#L280">280</a>             Graph g2 = createGraph2();
+<a class="jxr_linenumber" name="L281" href="#L281">281</a> 
+<a class="jxr_linenumber" name="L282" href="#L282">282</a>             <em class="jxr_comment">// and add them to a new Graph g3</em>
+<a class="jxr_linenumber" name="L283" href="#L283">283</a>             Graph g3 = factory.createGraph();  
+<a class="jxr_linenumber" name="L284" href="#L284">284</a>             addAllTriples(g1, g3);
+<a class="jxr_linenumber" name="L285" href="#L285">285</a>             addAllTriples(g2, g3);
+<a class="jxr_linenumber" name="L286" href="#L286">286</a> 
+<a class="jxr_linenumber" name="L287" href="#L287">287</a>             
+<a class="jxr_linenumber" name="L288" href="#L288">288</a>             <em class="jxr_comment">// Let's make a map to find all those blank nodes after insertion</em>
+<a class="jxr_linenumber" name="L289" href="#L289">289</a>             <em class="jxr_comment">// (The Graph implementation is not currently required to </em>
+<a class="jxr_linenumber" name="L290" href="#L290">290</a>             <em class="jxr_comment">// keep supporting those BlankNodes with contains() - see COMMONSRDF-15)</em>
+<a class="jxr_linenumber" name="L291" href="#L291">291</a> 
+<a class="jxr_linenumber" name="L292" href="#L292">292</a>             <strong class="jxr_keyword">final</strong> Map&lt;String, BlankNodeOrIRI&gt; whoIsWho = <strong class="jxr_keyword">new</strong> ConcurrentHashMap&lt;&gt;();
+<a class="jxr_linenumber" name="L293" href="#L293">293</a>             <em class="jxr_comment">// ConcurrentHashMap as we will try parallel forEach below,</em>
+<a class="jxr_linenumber" name="L294" href="#L294">294</a>             <em class="jxr_comment">// which should not give inconsistent results (it does with a</em>
+<a class="jxr_linenumber" name="L295" href="#L295">295</a>             <em class="jxr_comment">// HashMap!)</em>
+<a class="jxr_linenumber" name="L296" href="#L296">296</a>             
+<a class="jxr_linenumber" name="L297" href="#L297">297</a>             <em class="jxr_comment">// look up BlankNodes by name</em>
+<a class="jxr_linenumber" name="L298" href="#L298">298</a>             IRI name = factory.createIRI(<span class="jxr_string">"http://xmlns.com/foaf/0.1/name"</span>);
+<a class="jxr_linenumber" name="L299" href="#L299">299</a>             g3.stream(<strong class="jxr_keyword">null</strong>, name, <strong class="jxr_keyword">null</strong>).parallel().forEach( t -&gt;
+<a class="jxr_linenumber" name="L300" href="#L300">300</a>                 whoIsWho.put( t.getObject().ntriplesString(), t.getSubject()));
+<a class="jxr_linenumber" name="L301" href="#L301">301</a>                         
+<a class="jxr_linenumber" name="L302" href="#L302">302</a>             assertEquals(4, whoIsWho.size());
+<a class="jxr_linenumber" name="L303" href="#L303">303</a>             <em class="jxr_comment">// and contains 4 unique values</em>
+<a class="jxr_linenumber" name="L304" href="#L304">304</a>             assertEquals(4, <strong class="jxr_keyword">new</strong> HashSet&lt;BlankNodeOrIRI&gt;(whoIsWho.values()).size());
+<a class="jxr_linenumber" name="L305" href="#L305">305</a> 
+<a class="jxr_linenumber" name="L306" href="#L306">306</a>             BlankNodeOrIRI b1Alice = whoIsWho.get(<span class="jxr_string">"\&quot;Alice\&quot;"</span>);
+<a class="jxr_linenumber" name="L307" href="#L307">307</a>             assertNotNull(b1Alice);
+<a class="jxr_linenumber" name="L308" href="#L308">308</a>             BlankNodeOrIRI b2Bob = whoIsWho.get(<span class="jxr_string">"\&quot;Bob\&quot;"</span>);
+<a class="jxr_linenumber" name="L309" href="#L309">309</a>             assertNotNull(b2Bob);
+<a class="jxr_linenumber" name="L310" href="#L310">310</a>             BlankNodeOrIRI b1Charlie = whoIsWho.get(<span class="jxr_string">"\&quot;Charlie\&quot;"</span>);
+<a class="jxr_linenumber" name="L311" href="#L311">311</a>             assertNotNull(b1Charlie);
+<a class="jxr_linenumber" name="L312" href="#L312">312</a>             BlankNodeOrIRI b2Dave = whoIsWho.get(<span class="jxr_string">"\&quot;Dave\&quot;"</span>);
+<a class="jxr_linenumber" name="L313" href="#L313">313</a>             assertNotNull(b2Dave);
+<a class="jxr_linenumber" name="L314" href="#L314">314</a> 
+<a class="jxr_linenumber" name="L315" href="#L315">315</a>             <em class="jxr_comment">// All blank nodes should differ</em>
+<a class="jxr_linenumber" name="L316" href="#L316">316</a>             notEquals(b1Alice, b2Bob);
+<a class="jxr_linenumber" name="L317" href="#L317">317</a>             notEquals(b1Alice, b1Charlie);
+<a class="jxr_linenumber" name="L318" href="#L318">318</a>             notEquals(b1Alice, b2Dave);
+<a class="jxr_linenumber" name="L319" href="#L319">319</a>             notEquals(b2Bob, b1Charlie);
+<a class="jxr_linenumber" name="L320" href="#L320">320</a>             notEquals(b2Bob, b2Dave);
+<a class="jxr_linenumber" name="L321" href="#L321">321</a>             notEquals(b1Charlie, b2Dave);
+<a class="jxr_linenumber" name="L322" href="#L322">322</a> 
+<a class="jxr_linenumber" name="L323" href="#L323">323</a>             <em class="jxr_comment">// And we should be able to query with them again</em>
+<a class="jxr_linenumber" name="L324" href="#L324">324</a>             <em class="jxr_comment">// as we got them back from g3</em>
+<a class="jxr_linenumber" name="L325" href="#L325">325</a>             IRI hasChild = factory.createIRI(<span class="jxr_string">"http://example.com/hasChild"</span>);
+<a class="jxr_linenumber" name="L326" href="#L326">326</a>             assertTrue(g3.contains(b1Alice, hasChild, b2Bob));
+<a class="jxr_linenumber" name="L327" href="#L327">327</a>             assertTrue(g3.contains(b2Dave, hasChild, b1Charlie));
+<a class="jxr_linenumber" name="L328" href="#L328">328</a>             <em class="jxr_comment">// But not</em>
+<a class="jxr_linenumber" name="L329" href="#L329">329</a>             assertFalse(g3.contains(b1Alice, hasChild, b1Alice));
+<a class="jxr_linenumber" name="L330" href="#L330">330</a>             assertFalse(g3.contains(b1Alice, hasChild, b1Charlie));
+<a class="jxr_linenumber" name="L331" href="#L331">331</a>             assertFalse(g3.contains(b1Alice, hasChild, b2Dave));
+<a class="jxr_linenumber" name="L332" href="#L332">332</a>             <em class="jxr_comment">// nor</em>
+<a class="jxr_linenumber" name="L333" href="#L333">333</a>             assertFalse(g3.contains(b2Dave, hasChild, b1Alice));
+<a class="jxr_linenumber" name="L334" href="#L334">334</a>             assertFalse(g3.contains(b2Dave, hasChild, b1Alice));
+<a class="jxr_linenumber" name="L335" href="#L335">335</a> 
+<a class="jxr_linenumber" name="L336" href="#L336">336</a>             <em class="jxr_comment">// and these don't have any children (as far as we know)</em>
+<a class="jxr_linenumber" name="L337" href="#L337">337</a>             assertFalse(g3.contains(b2Bob, hasChild, <strong class="jxr_keyword">null</strong>));
+<a class="jxr_linenumber" name="L338" href="#L338">338</a>             assertFalse(g3.contains(b1Charlie, hasChild, <strong class="jxr_keyword">null</strong>));
+<a class="jxr_linenumber" name="L339" href="#L339">339</a>         } <strong class="jxr_keyword">catch</strong> (UnsupportedOperationException ex) {
+<a class="jxr_linenumber" name="L340" href="#L340">340</a>             Assume.assumeNoException(ex);
+<a class="jxr_linenumber" name="L341" href="#L341">341</a>         }
+<a class="jxr_linenumber" name="L342" href="#L342">342</a>     }
+<a class="jxr_linenumber" name="L343" href="#L343">343</a> 
+<a class="jxr_linenumber" name="L344" href="#L344">344</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> notEquals(BlankNodeOrIRI node1, BlankNodeOrIRI node2) {
+<a class="jxr_linenumber" name="L345" href="#L345">345</a>         assertFalse(node1.equals(node2));
+<a class="jxr_linenumber" name="L346" href="#L346">346</a>         <em class="jxr_comment">// in which case we should be able to assume</em>
+<a class="jxr_linenumber" name="L347" href="#L347">347</a>         <em class="jxr_comment">// (as they are in the same graph)</em>
+<a class="jxr_linenumber" name="L348" href="#L348">348</a>         assertFalse(node1.ntriplesString().equals(node2.ntriplesString()));
+<a class="jxr_linenumber" name="L349" href="#L349">349</a>     }
+<a class="jxr_linenumber" name="L350" href="#L350">350</a> 
+<a class="jxr_linenumber" name="L351" href="#L351">351</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L352" href="#L352">352</a> <em class="jxr_javadoccomment">     * Add all triples from the source to the target.</em>
+<a class="jxr_linenumber" name="L353" href="#L353">353</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="L354" href="#L354">354</a> <em class="jxr_javadoccomment">     * The triples may be copied in any order.</em>
+<a class="jxr_linenumber" name="L355" href="#L355">355</a> <em class="jxr_javadoccomment">     * No special conversion or adaptation of {@link BlankNode}s are performed.</em>
+<a class="jxr_linenumber" name="L356" href="#L356">356</a> <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L357" href="#L357">357</a> <em class="jxr_javadoccomment">     * @param source Source Graph to copy triples from</em>
+<a class="jxr_linenumber" name="L358" href="#L358">358</a> <em class="jxr_javadoccomment">     * @param target Target Graph where triples will be added</em>
+<a class="jxr_linenumber" name="L359" href="#L359">359</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L360" href="#L360">360</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> addAllTriples(Graph source, Graph target) {
+<a class="jxr_linenumber" name="L361" href="#L361">361</a> 
+<a class="jxr_linenumber" name="L362" href="#L362">362</a>         <em class="jxr_comment">// unordered() as we don't need to preserve triple order</em>
+<a class="jxr_linenumber" name="L363" href="#L363">363</a>         <em class="jxr_comment">// sequential() as we don't (currently) require target Graph to be thread-safe</em>
+<a class="jxr_linenumber" name="L364" href="#L364">364</a>         source.stream().unordered().sequential().forEach(t -&gt; target.add(t));
+<a class="jxr_linenumber" name="L365" href="#L365">365</a>     }
+<a class="jxr_linenumber" name="L366" href="#L366">366</a> 
+<a class="jxr_linenumber" name="L367" href="#L367">367</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L368" href="#L368">368</a> <em class="jxr_javadoccomment">     * Make a new graph with two BlankNodes - each with a different uniqueReference</em>
+<a class="jxr_linenumber" name="L369" href="#L369">369</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L370" href="#L370">370</a>     <strong class="jxr_keyword">private</strong> Graph createGraph1() {
+<a class="jxr_linenumber" name="L371" href="#L371">371</a>         RDFTermFactory factory1 = createFactory();
+<a class="jxr_linenumber" name="L372" href="#L372">372</a> 
+<a class="jxr_linenumber" name="L373" href="#L373">373</a>         IRI name = factory1.createIRI(<span class="jxr_string">"http://xmlns.com/foaf/0.1/name"</span>);
+<a class="jxr_linenumber" name="L374" href="#L374">374</a>         Graph g1 = factory1.createGraph();
+<a class="jxr_linenumber" name="L375" href="#L375">375</a>         BlankNode b1 = createOwnBlankNode(<span class="jxr_string">"b1"</span>, <span class="jxr_string">"0240eaaa-d33e-4fc0-a4f1-169d6ced3680"</span>);
+<a class="jxr_linenumber" name="L376" href="#L376">376</a>         g1.add(b1, name, factory1.createLiteral(<span class="jxr_string">"Alice"</span>));
+<a class="jxr_linenumber" name="L377" href="#L377">377</a>         
+<a class="jxr_linenumber" name="L378" href="#L378">378</a>         
+<a class="jxr_linenumber" name="L379" href="#L379">379</a>         BlankNode b2 = createOwnBlankNode(<span class="jxr_string">"b2"</span>, <span class="jxr_string">"9de7db45-0ce7-4b0f-a1ce-c9680ffcfd9f"</span>);
+<a class="jxr_linenumber" name="L380" href="#L380">380</a>         g1.add(b2, name, factory1.createLiteral(<span class="jxr_string">"Bob"</span>));
+<a class="jxr_linenumber" name="L381" href="#L381">381</a> 
+<a class="jxr_linenumber" name="L382" href="#L382">382</a>         IRI hasChild = factory1.createIRI(<span class="jxr_string">"http://example.com/hasChild"</span>);
+<a class="jxr_linenumber" name="L383" href="#L383">383</a>         g1.add(b1, hasChild,  b2);
+<a class="jxr_linenumber" name="L384" href="#L384">384</a> 
+<a class="jxr_linenumber" name="L385" href="#L385">385</a>         <strong class="jxr_keyword">return</strong> g1;
+<a class="jxr_linenumber" name="L386" href="#L386">386</a>     }
+<a class="jxr_linenumber" name="L387" href="#L387">387</a> 
+<a class="jxr_linenumber" name="L388" href="#L388">388</a>     <em class="jxr_javadoccomment">/** </em>
+<a class="jxr_linenumber" name="L389" href="#L389">389</a> <em class="jxr_javadoccomment">     * Create a different implementation of BlankNode to be tested with</em>
+<a class="jxr_linenumber" name="L390" href="#L390">390</a> <em class="jxr_javadoccomment">     * graph.add(a,b,c);</em>
+<a class="jxr_linenumber" name="L391" href="#L391">391</a> <em class="jxr_javadoccomment">     * (the implementation may or may not then choose to translate such to </em>
+<a class="jxr_linenumber" name="L392" href="#L392">392</a> <em class="jxr_javadoccomment">     * its own instances)</em>
+<a class="jxr_linenumber" name="L393" href="#L393">393</a> <em class="jxr_javadoccomment">     * </em>
+<a class="jxr_linenumber" name="L394" href="#L394">394</a> <em class="jxr_javadoccomment">     * @param name</em>
+<a class="jxr_linenumber" name="L395" href="#L395">395</a> <em class="jxr_javadoccomment">     * @return</em>
+<a class="jxr_linenumber" name="L396" href="#L396">396</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L397" href="#L397">397</a> 	<strong class="jxr_keyword">private</strong> BlankNode createOwnBlankNode(String name, String uuid) {
+<a class="jxr_linenumber" name="L398" href="#L398">398</a> 		<strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> BlankNode() {			
+<a class="jxr_linenumber" name="L399" href="#L399">399</a> 			@Override
+<a class="jxr_linenumber" name="L400" href="#L400">400</a> 			<strong class="jxr_keyword">public</strong> String ntriplesString() {
+<a class="jxr_linenumber" name="L401" href="#L401">401</a> 				<strong class="jxr_keyword">return</strong> <span class="jxr_string">"_: "</span> + name;
+<a class="jxr_linenumber" name="L402" href="#L402">402</a> 			}
+<a class="jxr_linenumber" name="L403" href="#L403">403</a> 			@Override
+<a class="jxr_linenumber" name="L404" href="#L404">404</a> 			<strong class="jxr_keyword">public</strong> String uniqueReference() {
+<a class="jxr_linenumber" name="L405" href="#L405">405</a> 				<strong class="jxr_keyword">return</strong> uuid;
+<a class="jxr_linenumber" name="L406" href="#L406">406</a> 			}
+<a class="jxr_linenumber" name="L407" href="#L407">407</a> 			@Override
+<a class="jxr_linenumber" name="L408" href="#L408">408</a> 			<strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong> hashCode() {
+<a class="jxr_linenumber" name="L409" href="#L409">409</a> 				<strong class="jxr_keyword">return</strong> uuid.hashCode();
+<a class="jxr_linenumber" name="L410" href="#L410">410</a> 			}
+<a class="jxr_linenumber" name="L411" href="#L411">411</a> 			@Override
+<a class="jxr_linenumber" name="L412" href="#L412">412</a> 			<strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> equals(Object obj) {
+<a class="jxr_linenumber" name="L413" href="#L413">413</a> 				<strong class="jxr_keyword">if</strong> (!( obj instanceof BlankNode)) {
+<a class="jxr_linenumber" name="L414" href="#L414">414</a> 					<strong class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="L415" href="#L415">415</a> 				}
+<a class="jxr_linenumber" name="L416" href="#L416">416</a> 				BlankNode other = (BlankNode)obj;
+<a class="jxr_linenumber" name="L417" href="#L417">417</a> 				<strong class="jxr_keyword">return</strong> uuid.equals(other.uniqueReference());
+<a class="jxr_linenumber" name="L418" href="#L418">418</a> 			}
+<a class="jxr_linenumber" name="L419" href="#L419">419</a> 		};
+<a class="jxr_linenumber" name="L420" href="#L420">420</a> 	}
+<a class="jxr_linenumber" name="L421" href="#L421">421</a> 
+<a class="jxr_linenumber" name="L422" href="#L422">422</a>     <strong class="jxr_keyword">private</strong> Graph createGraph2() {
+<a class="jxr_linenumber" name="L423" href="#L423">423</a>         RDFTermFactory factory2 = createFactory();
+<a class="jxr_linenumber" name="L424" href="#L424">424</a>         IRI name = factory2.createIRI(<span class="jxr_string">"http://xmlns.com/foaf/0.1/name"</span>);
+<a class="jxr_linenumber" name="L425" href="#L425">425</a> 
+<a class="jxr_linenumber" name="L426" href="#L426">426</a>         Graph g2 = factory2.createGraph();
+<a class="jxr_linenumber" name="L427" href="#L427">427</a> 
+<a class="jxr_linenumber" name="L428" href="#L428">428</a>         BlankNode b1 = createOwnBlankNode(<span class="jxr_string">"b1"</span>, <span class="jxr_string">"bc8d3e45-a08f-421d-85b3-c25b373abf87"</span>);
+<a class="jxr_linenumber" name="L429" href="#L429">429</a>         g2.add(b1, name, factory2.createLiteral(<span class="jxr_string">"Charlie"</span>));
+<a class="jxr_linenumber" name="L430" href="#L430">430</a> 
+<a class="jxr_linenumber" name="L431" href="#L431">431</a>         BlankNode b2 = createOwnBlankNode(<span class="jxr_string">"b2"</span>, <span class="jxr_string">"2209097a-5078-4b03-801a-6a2d2f50d739"</span>);
+<a class="jxr_linenumber" name="L432" href="#L432">432</a>         g2.add(b2, name, factory2.createLiteral(<span class="jxr_string">"Dave"</span>));
+<a class="jxr_linenumber" name="L433" href="#L433">433</a> 
+<a class="jxr_linenumber" name="L434" href="#L434">434</a>         IRI hasChild = factory2.createIRI(<span class="jxr_string">"http://example.com/hasChild"</span>);
+<a class="jxr_linenumber" name="L435" href="#L435">435</a>         <em class="jxr_comment">// NOTE: Opposite direction of loadGraph1</em>
+<a class="jxr_linenumber" name="L436" href="#L436">436</a>         g2.add(b2, hasChild,  b1);
+<a class="jxr_linenumber" name="L437" href="#L437">437</a>         <strong class="jxr_keyword">return</strong> g2;
+<a class="jxr_linenumber" name="L438" href="#L438">438</a>     }
+<a class="jxr_linenumber" name="L439" href="#L439">439</a> 
+<a class="jxr_linenumber" name="L440" href="#L440">440</a>     <em class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L441" href="#L441">441</a> <em class="jxr_javadoccomment">     * An attempt to use the Java 8 streams to look up a more complicated query.</em>
+<a class="jxr_linenumber" name="L442" href="#L442">442</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
+<a class="jxr_linenumber" name="L443" href="#L443">443</a> <em class="jxr_javadoccomment">     * FYI, the equivalent SPARQL version (untested):</em>
+<a class="jxr_linenumber" name="L444" href="#L444">444</a> <em class="jxr_javadoccomment">     * &lt;pre&gt;</em>
+<a class="jxr_linenumber" name="L445" href="#L445">445</a> <em class="jxr_javadoccomment">     * 	SELECT ?orgName WHERE {</em>
+<a class="jxr_linenumber" name="L446" href="#L446">446</a> <em class="jxr_javadoccomment">     * 			?org foaf:name ?orgName .</em>
+<a class="jxr_linenumber" name="L447" href="#L447">447</a> <em class="jxr_javadoccomment">     * 			?alice foaf:member ?org .</em>
+<a class="jxr_linenumber" name="L448" href="#L448">448</a> <em class="jxr_javadoccomment">     * 			?bob foaf:member ?org .</em>
+<a class="jxr_linenumber" name="L449" href="#L449">449</a> <em class="jxr_javadoccomment">     * 			?alice foaf:knows ?bob .</em>
+<a class="jxr_linenumber" name="L450" href="#L450">450</a> <em class="jxr_javadoccomment">     * 		  FILTER NOT EXIST { ?bob foaf:knows ?alice }</em>
+<a class="jxr_linenumber" name="L451" href="#L451">451</a> <em class="jxr_javadoccomment">     *    }</em>
+<a class="jxr_linenumber" name="L452" href="#L452">452</a> <em class="jxr_javadoccomment">     * &lt;/pre&gt;</em>
+<a class="jxr_linenumber" name="L453" href="#L453">453</a> <em class="jxr_javadoccomment">     *</em>
+<a class="jxr_linenumber" name="L454" href="#L454">454</a> <em class="jxr_javadoccomment">     * @throws Exception</em>
+<a class="jxr_linenumber" name="L455" href="#L455">455</a> <em class="jxr_javadoccomment">     */</em>
+<a class="jxr_linenumber" name="L456" href="#L456">456</a>     @Test
+<a class="jxr_linenumber" name="L457" href="#L457">457</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> whyJavaStreamsMightNotTakeOverFromSparql() <strong class="jxr_keyword">throws</strong> Exception {
+<a class="jxr_linenumber" name="L458" href="#L458">458</a>         Assume.assumeNotNull(bnode1, bnode2, secretClubName);
+<a class="jxr_linenumber" name="L459" href="#L459">459</a>         <em class="jxr_comment">// Find a secret organizations</em>
+<a class="jxr_linenumber" name="L460" href="#L460">460</a>         assertEquals(
+<a class="jxr_linenumber" name="L461" href="#L461">461</a>                 <span class="jxr_string">"\&quot;The Secret Club\&quot;"</span>,
+<a class="jxr_linenumber" name="L462" href="#L462">462</a>                 graph.stream(<strong class="jxr_keyword">null</strong>, knows, <strong class="jxr_keyword">null</strong>)
+<a class="jxr_linenumber" name="L463" href="#L463">463</a>                         <em class="jxr_comment">// Find One-way "knows"</em>
+<a class="jxr_linenumber" name="L464" href="#L464">464</a>                         .filter(t -&gt; !graph.contains(
+<a class="jxr_linenumber" name="L465" href="#L465">465</a>                                 (BlankNodeOrIRI) t.getObject(), knows,
+<a class="jxr_linenumber" name="L466" href="#L466">466</a>                                 t.getSubject()))
+<a class="jxr_linenumber" name="L467" href="#L467">467</a>                         .map(knowsTriple -&gt; graph
+<a class="jxr_linenumber" name="L468" href="#L468">468</a>                                 <em class="jxr_comment">// and those they know, what are they member of?</em>
+<a class="jxr_linenumber" name="L469" href="#L469">469</a>                                 .stream(
+<a class="jxr_linenumber" name="L470" href="#L470">470</a>                                         (BlankNodeOrIRI) knowsTriple
+<a class="jxr_linenumber" name="L471" href="#L471">471</a>                                                 .getObject(), member, <strong class="jxr_keyword">null</strong>)
+<a class="jxr_linenumber" name="L472" href="#L472">472</a>                                         <em class="jxr_comment">// keep those which first-guy is a member of</em>
+<a class="jxr_linenumber" name="L473" href="#L473">473</a>                                 .filter(memberTriple -&gt; graph.contains(
+<a class="jxr_linenumber" name="L474" href="#L474">474</a>                                         knowsTriple.getSubject(), member,
+<a class="jxr_linenumber" name="L475" href="#L475">475</a>                                         <em class="jxr_comment">// First hit is good enough</em>
+<a class="jxr_linenumber" name="L476" href="#L476">476</a>                                         memberTriple.getObject())).findFirst()
+<a class="jxr_linenumber" name="L477" href="#L477">477</a>                                 .get().getObject())
+<a class="jxr_linenumber" name="L478" href="#L478">478</a>                                 <em class="jxr_comment">// then look up the name of that org</em>
+<a class="jxr_linenumber" name="L479" href="#L479">479</a>                         .map(org -&gt; graph
+<a class="jxr_linenumber" name="L480" href="#L480">480</a>                                 .stream((BlankNodeOrIRI) org, name, <strong class="jxr_keyword">null</strong>)
+<a class="jxr_linenumber" name="L481" href="#L481">481</a>                                 .findFirst().get().getObject().ntriplesString())
+<a class="jxr_linenumber" name="L482" href="#L482">482</a>                         .findFirst().get());
+<a class="jxr_linenumber" name="L483" href="#L483">483</a> 
+<a class="jxr_linenumber" name="L484" href="#L484">484</a>     }
+<a class="jxr_linenumber" name="L485" href="#L485">485</a> }
+</pre>
+<hr/>
+<div id="footer">Copyright &#169; 2015&#x2013;2016 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</div>
+</body>
+</html>
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