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| <div class="title">TupleIsNullPredicate.java</div> </div> |
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| <a href="TupleIsNullPredicate_8java.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2012 Cloudera Inc.</span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// You may obtain a copy of the License at</span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">//</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// See the License for the specific language governing permissions and</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// limitations under the License.</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">package </span>com.cloudera.impala.analysis;</div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">import</span> java.util.List;</div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">import</span> java.util.Set;</div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">import</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1common_1_1AnalysisException.html">com.cloudera.impala.common.AnalysisException</a>;</div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">import</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1common_1_1InternalException.html">com.cloudera.impala.common.InternalException</a>;</div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">import</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1service_1_1FeSupport.html">com.cloudera.impala.service.FeSupport</a>;</div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">import</span> com.cloudera.impala.thrift.TExprNode;</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">import</span> com.cloudera.impala.thrift.TExprNodeType;</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">import</span> com.cloudera.impala.thrift.TTupleIsNullPredicate;</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">import</span> com.google.common.base.Preconditions;</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">import</span> com.google.common.collect.Lists;</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">import</span> com.google.common.collect.Sets;</div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div> |
| <div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html"> 39</a></span> <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html">TupleIsNullPredicate</a> <span class="keyword">extends</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Predicate.html">Predicate</a> {</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1bd0810a6cd178faf34f25c31eeded5d"> 40</a></span>  <span class="keyword">private</span> <span class="keyword">final</span> Set<TupleId> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1bd0810a6cd178faf34f25c31eeded5d">tupleIds_</a>;</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a5f52718806f5e9110adfe5773c02d33e"> 41</a></span>  <span class="keyword">private</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Analyzer.html">Analyzer</a> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a5f52718806f5e9110adfe5773c02d33e">analyzer_</a>;</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div> |
| <div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#aed1aa9c26282c5e6550dd6750493a061"> 43</a></span>  <span class="keyword">public</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#aed1aa9c26282c5e6550dd6750493a061">TupleIsNullPredicate</a>(List<TupleId> tupleIds) {</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  Preconditions.checkState(tupleIds != null && !tupleIds.isEmpty());</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  this.tupleIds_ = Sets.newHashSet(tupleIds);</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  }</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div> |
| <div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#ab45fc5ff97f6a526167ebce87a4e1e7c"> 51</a></span>  <span class="keyword">protected</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#ab45fc5ff97f6a526167ebce87a4e1e7c">TupleIsNullPredicate</a>(<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html">TupleIsNullPredicate</a> other) {</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  super(other);</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1bd0810a6cd178faf34f25c31eeded5d">tupleIds_</a> = Sets.newHashSet(other.tupleIds_);</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a5f52718806f5e9110adfe5773c02d33e">analyzer_</a> = other.analyzer_;</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  @Override</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a73c82049bc412d6ee2102cc9da0054ef"> 58</a></span>  <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a73c82049bc412d6ee2102cc9da0054ef">analyze</a>(<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Analyzer.html">Analyzer</a> analyzer) <span class="keywordflow">throws</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1common_1_1AnalysisException.html">AnalysisException</a> {</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">if</span> (<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr.html#a8b745173008a9c04bd8892ca365d24af">isAnalyzed_</a>) <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  super.analyze(analyzer);</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a5f52718806f5e9110adfe5773c02d33e">analyzer_</a> = analyzer;</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  }</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  @Override</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#ada9fd7663413db66f84f3fe512f368c9"> 65</a></span>  <span class="keyword">protected</span> <span class="keywordtype">void</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#ada9fd7663413db66f84f3fe512f368c9">toThrift</a>(TExprNode msg) {</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  msg.node_type = TExprNodeType.TUPLE_IS_NULL_PRED;</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  msg.tuple_is_null_pred = <span class="keyword">new</span> TTupleIsNullPredicate();</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  Preconditions.checkNotNull(<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a5f52718806f5e9110adfe5773c02d33e">analyzer_</a>);</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">for</span> (<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleId.html">TupleId</a> tid: <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1bd0810a6cd178faf34f25c31eeded5d">tupleIds_</a>) {</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// Check that all referenced tuples are materialized.</span></div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleDescriptor.html">TupleDescriptor</a> tupleDesc = analyzer_.getTupleDesc(tid);</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  Preconditions.checkNotNull(tupleDesc, <span class="stringliteral">"Unknown tuple id: "</span> + tid.toString());</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  Preconditions.checkState(tupleDesc.isMaterialized(),</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  String.format(<span class="stringliteral">"Illegal reference to non-materialized tuple: tid=%s"</span>, tid));</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  msg.tuple_is_null_pred.addToTuple_ids(tid.asInt());</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  @Override</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a73c58b0cafee7a223aa348cde4ec5117"> 80</a></span>  <span class="keyword">public</span> <span class="keywordtype">boolean</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a73c58b0cafee7a223aa348cde4ec5117">equals</a>(Object o) {</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span> (!super.equals(o)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html">TupleIsNullPredicate</a> other = (<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#aed1aa9c26282c5e6550dd6750493a061">TupleIsNullPredicate</a>) o;</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> other.tupleIds_.containsAll(<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1bd0810a6cd178faf34f25c31eeded5d">tupleIds_</a>) &&</div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1bd0810a6cd178faf34f25c31eeded5d">tupleIds_</a>.containsAll(other.<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1bd0810a6cd178faf34f25c31eeded5d">tupleIds_</a>);</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  }</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  @Override</div> |
| <div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a25b14d1e9be584b46a183ead3506af2f"> 88</a></span>  <span class="keyword">protected</span> String <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a25b14d1e9be584b46a183ead3506af2f">toSqlImpl</a>() { <span class="keywordflow">return</span> <span class="stringliteral">"TupleIsNull()"</span>; }</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div> |
| <div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a479d16024b9e1e16438851a3f20e9251"> 90</a></span>  <span class="keyword">public</span> Set<TupleId> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a479d16024b9e1e16438851a3f20e9251">getTupleIds</a>() { <span class="keywordflow">return</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1bd0810a6cd178faf34f25c31eeded5d">tupleIds_</a>; }</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  @Override</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a4e3abd822b0b9b48888c75ba7a9588c5"> 93</a></span>  <span class="keyword">public</span> <span class="keywordtype">boolean</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a4e3abd822b0b9b48888c75ba7a9588c5">isConstant</a>() { <span class="keywordflow">return</span> <span class="keyword">false</span>; }</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div> |
| <div class="line"><a name="l00105"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#abda1f6a040406b16eec76f53f4556f20"> 105</a></span>  <span class="keyword">public</span> <span class="keyword">static</span> List<Expr> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#abda1f6a040406b16eec76f53f4556f20">wrapExprs</a>(List<Expr> inputExprs,</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  List<TupleId> tids, <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Analyzer.html">Analyzer</a> analyzer) <span class="keywordflow">throws</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1common_1_1InternalException.html">InternalException</a> {</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// Assert that all tids are materialized.</span></div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">for</span> (<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleId.html">TupleId</a> tid: tids) {</div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleDescriptor.html">TupleDescriptor</a> tupleDesc = analyzer.getTupleDesc(tid);</div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  Preconditions.checkState(tupleDesc.isMaterialized());</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  }</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// Perform the wrapping.</span></div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  List<Expr> result = Lists.newArrayListWithCapacity(inputExprs.size());</div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">for</span> (<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr.html">Expr</a> e: inputExprs) {</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  result.add(<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1d163fd91f6fe509e0135772dfa4c604">wrapExpr</a>(e, tids, analyzer));</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">return</span> result;</div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div> |
| <div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1d163fd91f6fe509e0135772dfa4c604"> 124</a></span>  <span class="keyword">public</span> <span class="keyword">static</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr.html">Expr</a> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1d163fd91f6fe509e0135772dfa4c604">wrapExpr</a>(<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr.html">Expr</a> expr, List<TupleId> tids, <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Analyzer.html">Analyzer</a> analyzer)</div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">throws</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1common_1_1InternalException.html">InternalException</a> {</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">if</span> (!<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a6bf560d6c4f8e869f384751ceda4f2ae">requiresNullWrapping</a>(expr, analyzer)) <span class="keywordflow">return</span> expr;</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  List<Expr> params = Lists.newArrayList();</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  params.add(<span class="keyword">new</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#aed1aa9c26282c5e6550dd6750493a061">TupleIsNullPredicate</a>(tids));</div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  params.add(<span class="keyword">new</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1NullLiteral.html">NullLiteral</a>());</div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  params.add(expr);</div> |
| <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr.html">Expr</a> ifExpr = <span class="keyword">new</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1FunctionCallExpr.html">FunctionCallExpr</a>(<span class="stringliteral">"if"</span>, params);</div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  ifExpr.analyzeNoThrow(analyzer);</div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">return</span> ifExpr;</div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  }</div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div> |
| <div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a6bf560d6c4f8e869f384751ceda4f2ae"> 141</a></span>  <span class="keyword">private</span> <span class="keyword">static</span> <span class="keywordtype">boolean</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a6bf560d6c4f8e869f384751ceda4f2ae">requiresNullWrapping</a>(<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr.html">Expr</a> expr, <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Analyzer.html">Analyzer</a> analyzer)</div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">throws</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1common_1_1InternalException.html">InternalException</a> {</div> |
| <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  Preconditions.checkNotNull(expr);</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="comment">// If the expr is already wrapped in an IF(TupleIsNull(), NULL, expr)</span></div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="comment">// then it must definitely be wrapped again at this level.</span></div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="comment">// Do not try to execute expr because a TupleIsNullPredicate is not constant.</span></div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">if</span> (expr.contains(<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html">TupleIsNullPredicate</a>.class)) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// Map for substituting SlotRefs with NullLiterals.</span></div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1ExprSubstitutionMap.html">ExprSubstitutionMap</a> nullSmap = <span class="keyword">new</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1ExprSubstitutionMap.html">ExprSubstitutionMap</a>();</div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  List<SlotRef> slotRefs = Lists.newArrayList();</div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  expr.collect(SlotRef.class, slotRefs);</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">for</span> (<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1SlotRef.html">SlotRef</a> slotRef: slotRefs) {</div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="comment">// The rhs null literal should have the same type as the lhs SlotRef to ensure</span></div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="comment">// exprs resolve to the same signature after applying this smap.</span></div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  nullSmap.put(slotRef, NullLiteral.create(slotRef.getType()));</div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment">// Replace all SlotRefs in expr with NullLiterals, and wrap the result</span></div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="comment">// with an IS NOT NULL predicate.</span></div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr.html">Expr</a> isNotNullLiteralPred =</div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">new</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1IsNullPredicate.html">IsNullPredicate</a>(expr.substitute(nullSmap, analyzer, <span class="keyword">false</span>), <span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  Preconditions.checkState(isNotNullLiteralPred.isConstant());</div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="comment">// analyze to insert casts, etc.</span></div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  isNotNullLiteralPred.analyzeNoThrow(analyzer);</div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">return</span> FeSupport.EvalPredicate(isNotNullLiteralPred, analyzer.getQueryCtx());</div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  }</div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div> |
| <div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  @Override</div> |
| <div class="line"><a name="l00170"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a95163555be805342bd2b4aaf0e45dd3e"> 170</a></span>  <span class="keyword">public</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr.html">Expr</a> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a95163555be805342bd2b4aaf0e45dd3e">clone</a>() { <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#aed1aa9c26282c5e6550dd6750493a061">TupleIsNullPredicate</a>(<span class="keyword">this</span>); }</div> |
| <div class="line"><a name="l00171"></a><span class="lineno"> 171</span> }</div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_a5f52718806f5e9110adfe5773c02d33e"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a5f52718806f5e9110adfe5773c02d33e">com.cloudera.impala.analysis.TupleIsNullPredicate.analyzer_</a></div><div class="ttdeci">Analyzer analyzer_</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00041">TupleIsNullPredicate.java:41</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleDescriptor_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleDescriptor.html">com.cloudera.impala.analysis.TupleDescriptor</a></div><div class="ttdef"><b>Definition:</b> <a href="TupleDescriptor_8java_source.html#l00054">TupleDescriptor.java:54</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_aed1aa9c26282c5e6550dd6750493a061"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#aed1aa9c26282c5e6550dd6750493a061">com.cloudera.impala.analysis.TupleIsNullPredicate.TupleIsNullPredicate</a></div><div class="ttdeci">TupleIsNullPredicate(List< TupleId > tupleIds)</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00043">TupleIsNullPredicate.java:43</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_a479d16024b9e1e16438851a3f20e9251"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a479d16024b9e1e16438851a3f20e9251">com.cloudera.impala.analysis.TupleIsNullPredicate.getTupleIds</a></div><div class="ttdeci">Set< TupleId > getTupleIds()</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00090">TupleIsNullPredicate.java:90</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_a73c58b0cafee7a223aa348cde4ec5117"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a73c58b0cafee7a223aa348cde4ec5117">com.cloudera.impala.analysis.TupleIsNullPredicate.equals</a></div><div class="ttdeci">boolean equals(Object o)</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00080">TupleIsNullPredicate.java:80</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_ada9fd7663413db66f84f3fe512f368c9"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#ada9fd7663413db66f84f3fe512f368c9">com.cloudera.impala.analysis.TupleIsNullPredicate.toThrift</a></div><div class="ttdeci">void toThrift(TExprNode msg)</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00065">TupleIsNullPredicate.java:65</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1FunctionCallExpr_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1FunctionCallExpr.html">com.cloudera.impala.analysis.FunctionCallExpr</a></div><div class="ttdef"><b>Definition:</b> <a href="FunctionCallExpr_8java_source.html#l00037">FunctionCallExpr.java:37</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_a95163555be805342bd2b4aaf0e45dd3e"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a95163555be805342bd2b4aaf0e45dd3e">com.cloudera.impala.analysis.TupleIsNullPredicate.clone</a></div><div class="ttdeci">Expr clone()</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00170">TupleIsNullPredicate.java:170</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1service_1_1FeSupport_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1service_1_1FeSupport.html">com.cloudera.impala.service.FeSupport</a></div><div class="ttdef"><b>Definition:</b> <a href="FeSupport_8java_source.html#l00060">FeSupport.java:60</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1common_1_1AnalysisException_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1common_1_1AnalysisException.html">com.cloudera.impala.common.AnalysisException</a></div><div class="ttdef"><b>Definition:</b> <a href="AnalysisException_8java_source.html#l00021">AnalysisException.java:21</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1SlotRef_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1SlotRef.html">com.cloudera.impala.analysis.SlotRef</a></div><div class="ttdef"><b>Definition:</b> <a href="SlotRef_8java_source.html#l00035">SlotRef.java:35</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1IsNullPredicate_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1IsNullPredicate.html">com.cloudera.impala.analysis.IsNullPredicate</a></div><div class="ttdef"><b>Definition:</b> <a href="IsNullPredicate_8java_source.html#l00032">IsNullPredicate.java:32</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Predicate_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Predicate.html">com.cloudera.impala.analysis.Predicate</a></div><div class="ttdef"><b>Definition:</b> <a href="Predicate_8java_source.html#l00029">Predicate.java:29</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_a4e3abd822b0b9b48888c75ba7a9588c5"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a4e3abd822b0b9b48888c75ba7a9588c5">com.cloudera.impala.analysis.TupleIsNullPredicate.isConstant</a></div><div class="ttdeci">boolean isConstant()</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00093">TupleIsNullPredicate.java:93</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_a6bf560d6c4f8e869f384751ceda4f2ae"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a6bf560d6c4f8e869f384751ceda4f2ae">com.cloudera.impala.analysis.TupleIsNullPredicate.requiresNullWrapping</a></div><div class="ttdeci">static boolean requiresNullWrapping(Expr expr, Analyzer analyzer)</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00141">TupleIsNullPredicate.java:141</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr.html">com.cloudera.impala.analysis.Expr</a></div><div class="ttdef"><b>Definition:</b> <a href="Expr_8java_source.html#l00048">Expr.java:48</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1common_1_1InternalException_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1common_1_1InternalException.html">com.cloudera.impala.common.InternalException</a></div><div class="ttdef"><b>Definition:</b> <a href="InternalException_8java_source.html#l00021">InternalException.java:21</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1NullLiteral_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1NullLiteral.html">com.cloudera.impala.analysis.NullLiteral</a></div><div class="ttdef"><b>Definition:</b> <a href="NullLiteral_8java_source.html#l00023">NullLiteral.java:23</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Analyzer_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Analyzer.html">com.cloudera.impala.analysis.Analyzer</a></div><div class="ttdef"><b>Definition:</b> <a href="Analyzer_8java_source.html#l00105">Analyzer.java:105</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_a25b14d1e9be584b46a183ead3506af2f"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a25b14d1e9be584b46a183ead3506af2f">com.cloudera.impala.analysis.TupleIsNullPredicate.toSqlImpl</a></div><div class="ttdeci">String toSqlImpl()</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00088">TupleIsNullPredicate.java:88</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr_html_a8b745173008a9c04bd8892ca365d24af"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Expr.html#a8b745173008a9c04bd8892ca365d24af">com.cloudera.impala.analysis.Expr.isAnalyzed_</a></div><div class="ttdeci">boolean isAnalyzed_</div><div class="ttdef"><b>Definition:</b> <a href="Expr_8java_source.html#l00143">Expr.java:143</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_abda1f6a040406b16eec76f53f4556f20"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#abda1f6a040406b16eec76f53f4556f20">com.cloudera.impala.analysis.TupleIsNullPredicate.wrapExprs</a></div><div class="ttdeci">static List< Expr > wrapExprs(List< Expr > inputExprs, List< TupleId > tids, Analyzer analyzer)</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00105">TupleIsNullPredicate.java:105</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_a73c82049bc412d6ee2102cc9da0054ef"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a73c82049bc412d6ee2102cc9da0054ef">com.cloudera.impala.analysis.TupleIsNullPredicate.analyze</a></div><div class="ttdeci">void analyze(Analyzer analyzer)</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00058">TupleIsNullPredicate.java:58</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleId_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleId.html">com.cloudera.impala.analysis.TupleId</a></div><div class="ttdef"><b>Definition:</b> <a href="TupleId_8java_source.html#l00023">TupleId.java:23</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1ExprSubstitutionMap_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1ExprSubstitutionMap.html">com.cloudera.impala.analysis.ExprSubstitutionMap</a></div><div class="ttdef"><b>Definition:</b> <a href="ExprSubstitutionMap_8java_source.html#l00020">ExprSubstitutionMap.java:20</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_a1bd0810a6cd178faf34f25c31eeded5d"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1bd0810a6cd178faf34f25c31eeded5d">com.cloudera.impala.analysis.TupleIsNullPredicate.tupleIds_</a></div><div class="ttdeci">final Set< TupleId > tupleIds_</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00040">TupleIsNullPredicate.java:40</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_ab45fc5ff97f6a526167ebce87a4e1e7c"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#ab45fc5ff97f6a526167ebce87a4e1e7c">com.cloudera.impala.analysis.TupleIsNullPredicate.TupleIsNullPredicate</a></div><div class="ttdeci">TupleIsNullPredicate(TupleIsNullPredicate other)</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00051">TupleIsNullPredicate.java:51</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html">com.cloudera.impala.analysis.TupleIsNullPredicate</a></div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00039">TupleIsNullPredicate.java:39</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate_html_a1d163fd91f6fe509e0135772dfa4c604"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleIsNullPredicate.html#a1d163fd91f6fe509e0135772dfa4c604">com.cloudera.impala.analysis.TupleIsNullPredicate.wrapExpr</a></div><div class="ttdeci">static Expr wrapExpr(Expr expr, List< TupleId > tids, Analyzer analyzer)</div><div class="ttdef"><b>Definition:</b> <a href="TupleIsNullPredicate_8java_source.html#l00124">TupleIsNullPredicate.java:124</a></div></div> |
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