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| <div class="title">EmptySetNode.java</div> </div> |
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| <a href="EmptySetNode_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.planner;</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.ArrayList;</div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">import</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Analyzer.html">com.cloudera.impala.analysis.Analyzer</a>;</div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">import</span> <a class="code" href="namespaceimpala.html#ae794620bedabff2a726194c228af75ce">com.cloudera.impala.analysis.TupleId</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> com.cloudera.impala.thrift.TExplainLevel;</div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">import</span> com.cloudera.impala.thrift.TPlanNode;</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">import</span> com.cloudera.impala.thrift.TPlanNodeType;</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div> |
| <div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html"> 30</a></span> <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html">EmptySetNode</a> <span class="keyword">extends</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html">PlanNode</a> {</div> |
| <div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#a7f762fdffdf5effc7b35555e6f8d3ad6"> 31</a></span>  <span class="keyword">public</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#a7f762fdffdf5effc7b35555e6f8d3ad6">EmptySetNode</a>(<a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNodeId.html">PlanNodeId</a> <span class="keywordtype">id</span>, ArrayList<TupleId> tupleIds) {</div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  super(<span class="keywordtype">id</span>, tupleIds, <span class="stringliteral">"EMPTYSET"</span>);</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  }</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  @Override</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#acf5c0194f0d3b2752f2bdcc33b816b21"> 36</a></span>  <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#acf5c0194f0d3b2752f2bdcc33b816b21">computeStats</a>(<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1Analyzer.html">Analyzer</a> analyzer) {</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#ae57aa5e0da7ec358ead79fe4e14dd1e6">avgRowSize_</a> = 0;</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#a04bb91215a1a50a038ce703e2dc78414">cardinality_</a> = 0;</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#a37c30672999db94543604ed98471893e">perHostMemCost_</a> = 0;</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#a93c6ed48d9fd753d6e066d64858a019f">numNodes_</a> = 1;</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  }</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  @Override</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#a811009638f5d1a75d4fd1565b0bf1ce4"> 44</a></span>  <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#a811009638f5d1a75d4fd1565b0bf1ce4">init</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_1InternalException.html">InternalException</a> {</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="comment">// If the physical output tuple produced by an AnalyticEvalNode wasn't created</span></div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment">// the logical output tuple is returned by getMaterializedTupleIds(). It needs</span></div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="comment">// to be set as materialized (even though it isn't) to avoid failing precondition</span></div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="comment">// checks generating the thrift for slot refs that may reference this tuple.</span></div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">for</span> (<a class="code" href="classcom_1_1cloudera_1_1impala_1_1analysis_1_1TupleId.html">TupleId</a> <span class="keywordtype">id</span>: <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#a2d2eee73aedf7868e191a2024e9f3022">tupleIds_</a>) analyzer.getTupleDesc(id).setIsMaterialized(<span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#ae85be815a5423c220a5cadffd73a58b4">computeMemLayout</a>(analyzer);</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#acf5c0194f0d3b2752f2bdcc33b816b21">computeStats</a>(analyzer);</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  }</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  @Override</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#a01b2b9a32a391bcd804ebd6db3015c07"> 55</a></span>  <span class="keyword">protected</span> String <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#a01b2b9a32a391bcd804ebd6db3015c07">getNodeExplainString</a>(String prefix, String detailPrefix,</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  TExplainLevel detailLevel) {</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">return</span> String.format(<span class="stringliteral">"%s%s:%s\n"</span>, prefix, id_.toString(), <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#ac27ac0a9f2c4e08424efac97a5cb49d9">displayName_</a>);</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  @Override</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#af1f39f989b30d04a4ed310975e97b8a6"> 61</a></span>  <span class="keyword">protected</span> <span class="keywordtype">void</span> <a class="code" href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#af1f39f989b30d04a4ed310975e97b8a6">toThrift</a>(TPlanNode msg) {</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  msg.node_type = TPlanNodeType.EMPTY_SET_NODE;</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> }</div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode_html_a37c30672999db94543604ed98471893e"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#a37c30672999db94543604ed98471893e">com.cloudera.impala.planner.PlanNode.perHostMemCost_</a></div><div class="ttdeci">long perHostMemCost_</div><div class="ttdef"><b>Definition:</b> <a href="PlanNode_8java_source.html#l00114">PlanNode.java:114</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode_html_a93c6ed48d9fd753d6e066d64858a019f"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#a93c6ed48d9fd753d6e066d64858a019f">com.cloudera.impala.planner.PlanNode.numNodes_</a></div><div class="ttdeci">int numNodes_</div><div class="ttdef"><b>Definition:</b> <a href="PlanNode_8java_source.html#l00107">PlanNode.java:107</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode_html_a811009638f5d1a75d4fd1565b0bf1ce4"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#a811009638f5d1a75d4fd1565b0bf1ce4">com.cloudera.impala.planner.EmptySetNode.init</a></div><div class="ttdeci">void init(Analyzer analyzer)</div><div class="ttdef"><b>Definition:</b> <a href="EmptySetNode_8java_source.html#l00044">EmptySetNode.java:44</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode_html_a2d2eee73aedf7868e191a2024e9f3022"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#a2d2eee73aedf7868e191a2024e9f3022">com.cloudera.impala.planner.PlanNode.tupleIds_</a></div><div class="ttdeci">ArrayList< TupleId > tupleIds_</div><div class="ttdef"><b>Definition:</b> <a href="PlanNode_8java_source.html#l00074">PlanNode.java:74</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html">com.cloudera.impala.planner.PlanNode</a></div><div class="ttdef"><b>Definition:</b> <a href="PlanNode_8java_source.html#l00059">PlanNode.java:59</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html">com.cloudera.impala.planner.EmptySetNode</a></div><div class="ttdef"><b>Definition:</b> <a href="EmptySetNode_8java_source.html#l00030">EmptySetNode.java:30</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode_html_a04bb91215a1a50a038ce703e2dc78414"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#a04bb91215a1a50a038ce703e2dc78414">com.cloudera.impala.planner.PlanNode.cardinality_</a></div><div class="ttdeci">long cardinality_</div><div class="ttdef"><b>Definition:</b> <a href="PlanNode_8java_source.html#l00103">PlanNode.java:103</a></div></div> |
| <div class="ttc" id="namespaceimpala_html_ae794620bedabff2a726194c228af75ce"><div class="ttname"><a href="namespaceimpala.html#ae794620bedabff2a726194c228af75ce">impala::TupleId</a></div><div class="ttdeci">int TupleId</div><div class="ttdef"><b>Definition:</b> <a href="global-types_8h_source.html#l00023">global-types.h:23</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode_html_acf5c0194f0d3b2752f2bdcc33b816b21"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#acf5c0194f0d3b2752f2bdcc33b816b21">com.cloudera.impala.planner.EmptySetNode.computeStats</a></div><div class="ttdeci">void computeStats(Analyzer analyzer)</div><div class="ttdef"><b>Definition:</b> <a href="EmptySetNode_8java_source.html#l00036">EmptySetNode.java:36</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode_html_a7f762fdffdf5effc7b35555e6f8d3ad6"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#a7f762fdffdf5effc7b35555e6f8d3ad6">com.cloudera.impala.planner.EmptySetNode.EmptySetNode</a></div><div class="ttdeci">EmptySetNode(PlanNodeId id, ArrayList< TupleId > tupleIds)</div><div class="ttdef"><b>Definition:</b> <a href="EmptySetNode_8java_source.html#l00031">EmptySetNode.java:31</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_1planner_1_1PlanNode_html_ae57aa5e0da7ec358ead79fe4e14dd1e6"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#ae57aa5e0da7ec358ead79fe4e14dd1e6">com.cloudera.impala.planner.PlanNode.avgRowSize_</a></div><div class="ttdeci">float avgRowSize_</div><div class="ttdef"><b>Definition:</b> <a href="PlanNode_8java_source.html#l00110">PlanNode.java:110</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNodeId_html"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNodeId.html">com.cloudera.impala.planner.PlanNodeId</a></div><div class="ttdef"><b>Definition:</b> <a href="PlanNodeId_8java_source.html#l00020">PlanNodeId.java:20</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_1planner_1_1PlanNode_html_ac27ac0a9f2c4e08424efac97a5cb49d9"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#ac27ac0a9f2c4e08424efac97a5cb49d9">com.cloudera.impala.planner.PlanNode.displayName_</a></div><div class="ttdeci">String displayName_</div><div class="ttdef"><b>Definition:</b> <a href="PlanNode_8java_source.html#l00066">PlanNode.java:66</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode_html_ae85be815a5423c220a5cadffd73a58b4"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1PlanNode.html#ae85be815a5423c220a5cadffd73a58b4">com.cloudera.impala.planner.PlanNode.computeMemLayout</a></div><div class="ttdeci">void computeMemLayout(Analyzer analyzer)</div><div class="ttdef"><b>Definition:</b> <a href="PlanNode_8java_source.html#l00475">PlanNode.java:475</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_1planner_1_1EmptySetNode_html_af1f39f989b30d04a4ed310975e97b8a6"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#af1f39f989b30d04a4ed310975e97b8a6">com.cloudera.impala.planner.EmptySetNode.toThrift</a></div><div class="ttdeci">void toThrift(TPlanNode msg)</div><div class="ttdef"><b>Definition:</b> <a href="EmptySetNode_8java_source.html#l00061">EmptySetNode.java:61</a></div></div> |
| <div class="ttc" id="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode_html_a01b2b9a32a391bcd804ebd6db3015c07"><div class="ttname"><a href="classcom_1_1cloudera_1_1impala_1_1planner_1_1EmptySetNode.html#a01b2b9a32a391bcd804ebd6db3015c07">com.cloudera.impala.planner.EmptySetNode.getNodeExplainString</a></div><div class="ttdeci">String getNodeExplainString(String prefix, String detailPrefix, TExplainLevel detailLevel)</div><div class="ttdef"><b>Definition:</b> <a href="EmptySetNode_8java_source.html#l00055">EmptySetNode.java:55</a></div></div> |
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