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<div class="title">uda-sample.h</div> </div>
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<a href="uda-sample_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2012 Cloudera Inc.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<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>&#160;<span class="comment">// You may obtain a copy of the License at</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<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>&#160;<span class="comment">// distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<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>&#160;<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>&#160;<span class="comment">// limitations under the License.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#ifndef IMPALA_UDF_SAMPLE_UDA_H</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define IMPALA_UDF_SAMPLE_UDA_H</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="udf_8h.html">udf/udf.h</a>&gt;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="keyword">using namespace </span>impala_udf;</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="keywordtype">void</span> <a class="code" href="uda-sample_8h.html#ab0fcda6069e5bbd8fcc92cff662d4eb9">CountInit</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <a class="code" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a>* val);</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="keywordtype">void</span> <a class="code" href="uda-sample_8h.html#af4dbe44a1ba19bdd6c84c94917948848">CountUpdate</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <span class="keyword">const</span> <a class="code" href="structimpala__udf_1_1IntVal.html">IntVal</a>&amp; input, <a class="code" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a>* val);</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="keywordtype">void</span> <a class="code" href="uda-sample_8h.html#aac8e236fb6db26d075c6c434266c5b53">CountMerge</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <span class="keyword">const</span> <a class="code" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a>&amp; src, <a class="code" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a>* dst);</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<a class="code" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a> <a class="code" href="uda-sample_8h.html#aad20429b2909a2803de721afa4e1cca2">CountFinalize</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <span class="keyword">const</span> <a class="code" href="structimpala__udf_1_1BigIntVal.html">BigIntVal</a>&amp; val);</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keywordtype">void</span> <a class="code" href="uda-sample_8h.html#a39881c9365b577a6949a5d179c071abb">AvgInit</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <a class="code" href="namespaceimpala__udf.html#a233587ab404d9304f392b1eda6826ea5">BufferVal</a>* val);</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="keywordtype">void</span> <a class="code" href="uda-sample_8h.html#a6555cbf9baa7a356fc1de6c595f3d48d">AvgUpdate</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <span class="keyword">const</span> <a class="code" href="structimpala__udf_1_1DoubleVal.html">DoubleVal</a>&amp; input, <a class="code" href="namespaceimpala__udf.html#a233587ab404d9304f392b1eda6826ea5">BufferVal</a>* val);</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="keywordtype">void</span> <a class="code" href="uda-sample_8h.html#ae22def6c9bc2f969f82012a45cab2e7e">AvgMerge</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <span class="keyword">const</span> <a class="code" href="namespaceimpala__udf.html#a233587ab404d9304f392b1eda6826ea5">BufferVal</a>&amp; src, <a class="code" href="namespaceimpala__udf.html#a233587ab404d9304f392b1eda6826ea5">BufferVal</a>* dst);</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<a class="code" href="structimpala__udf_1_1DoubleVal.html">DoubleVal</a> <a class="code" href="uda-sample_8h.html#a1ff44126e5fd1eede5c1863af268435d">AvgFinalize</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <span class="keyword">const</span> <a class="code" href="namespaceimpala__udf.html#a233587ab404d9304f392b1eda6826ea5">BufferVal</a>&amp; val);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="keywordtype">void</span> <a class="code" href="uda-sample_8h.html#a1beb385e2adb1c750336e51e4feb6390">StringConcatInit</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <a class="code" href="structimpala__udf_1_1StringVal.html">StringVal</a>* val);</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="keywordtype">void</span> <a class="code" href="uda-sample_8h.html#a9a5c023bfcf2f10968d52724590fbc9b">StringConcatUpdate</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <span class="keyword">const</span> <a class="code" href="structimpala__udf_1_1StringVal.html">StringVal</a>&amp; arg1,</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keyword">const</span> <a class="code" href="structimpala__udf_1_1StringVal.html">StringVal</a>&amp; arg2, <a class="code" href="structimpala__udf_1_1StringVal.html">StringVal</a>* val);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="keywordtype">void</span> <a class="code" href="uda-sample_8h.html#a3ed721587b9868912f96ced1b1691f0f">StringConcatMerge</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <span class="keyword">const</span> <a class="code" href="structimpala__udf_1_1StringVal.html">StringVal</a>&amp; src, <a class="code" href="structimpala__udf_1_1StringVal.html">StringVal</a>* dst);</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<a class="code" href="structimpala__udf_1_1StringVal.html">StringVal</a> <a class="code" href="uda-sample_8h.html#adb989c3d19aa394888bfe5722c835c28">StringConcatFinalize</a>(<a class="code" href="classimpala__udf_1_1FunctionContext.html">FunctionContext</a>* context, <span class="keyword">const</span> <a class="code" href="structimpala__udf_1_1StringVal.html">StringVal</a>&amp; val);</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="uda-sample_8h_html_ae22def6c9bc2f969f82012a45cab2e7e"><div class="ttname"><a href="uda-sample_8h.html#ae22def6c9bc2f969f82012a45cab2e7e">AvgMerge</a></div><div class="ttdeci">void AvgMerge(FunctionContext *context, const BufferVal &amp;src, BufferVal *dst)</div><div class="ttdef"><b>Definition:</b> <a href="uda-sample_8cc_source.html#l00061">uda-sample.cc:61</a></div></div>
<div class="ttc" id="uda-sample_8h_html_a1ff44126e5fd1eede5c1863af268435d"><div class="ttname"><a href="uda-sample_8h.html#a1ff44126e5fd1eede5c1863af268435d">AvgFinalize</a></div><div class="ttdeci">DoubleVal AvgFinalize(FunctionContext *context, const BufferVal &amp;val)</div><div class="ttdef"><b>Definition:</b> <a href="uda-sample_8cc_source.html#l00069">uda-sample.cc:69</a></div></div>
<div class="ttc" id="uda-sample_8h_html_a3ed721587b9868912f96ced1b1691f0f"><div class="ttname"><a href="uda-sample_8h.html#a3ed721587b9868912f96ced1b1691f0f">StringConcatMerge</a></div><div class="ttdeci">void StringConcatMerge(FunctionContext *context, const StringVal &amp;src, StringVal *dst)</div><div class="ttdef"><b>Definition:</b> <a href="uda-sample_8cc_source.html#l00099">uda-sample.cc:99</a></div></div>
<div class="ttc" id="structimpala__udf_1_1DoubleVal_html"><div class="ttname"><a href="structimpala__udf_1_1DoubleVal.html">impala_udf::DoubleVal</a></div><div class="ttdef"><b>Definition:</b> <a href="udf_8h_source.html#l00475">udf.h:475</a></div></div>
<div class="ttc" id="udf_8h_html"><div class="ttname"><a href="udf_8h.html">udf.h</a></div></div>
<div class="ttc" id="uda-sample_8h_html_af4dbe44a1ba19bdd6c84c94917948848"><div class="ttname"><a href="uda-sample_8h.html#af4dbe44a1ba19bdd6c84c94917948848">CountUpdate</a></div><div class="ttdeci">void CountUpdate(FunctionContext *context, const IntVal &amp;input, BigIntVal *val)</div><div class="ttdef"><b>Definition:</b> <a href="uda-test_8cc_source.html#l00039">uda-test.cc:39</a></div></div>
<div class="ttc" id="uda-sample_8h_html_a6555cbf9baa7a356fc1de6c595f3d48d"><div class="ttname"><a href="uda-sample_8h.html#a6555cbf9baa7a356fc1de6c595f3d48d">AvgUpdate</a></div><div class="ttdeci">void AvgUpdate(FunctionContext *context, const DoubleVal &amp;input, BufferVal *val)</div><div class="ttdef"><b>Definition:</b> <a href="uda-sample_8cc_source.html#l00054">uda-sample.cc:54</a></div></div>
<div class="ttc" id="uda-sample_8h_html_ab0fcda6069e5bbd8fcc92cff662d4eb9"><div class="ttname"><a href="uda-sample_8h.html#ab0fcda6069e5bbd8fcc92cff662d4eb9">CountInit</a></div><div class="ttdeci">void CountInit(FunctionContext *context, BigIntVal *val)</div><div class="ttdoc">This is an example of the COUNT aggregate function. </div><div class="ttdef"><b>Definition:</b> <a href="uda-test_8cc_source.html#l00034">uda-test.cc:34</a></div></div>
<div class="ttc" id="uda-sample_8h_html_aad20429b2909a2803de721afa4e1cca2"><div class="ttname"><a href="uda-sample_8h.html#aad20429b2909a2803de721afa4e1cca2">CountFinalize</a></div><div class="ttdeci">BigIntVal CountFinalize(FunctionContext *context, const BigIntVal &amp;val)</div><div class="ttdef"><b>Definition:</b> <a href="uda-test_8cc_source.html#l00049">uda-test.cc:49</a></div></div>
<div class="ttc" id="uda-sample_8h_html_aac8e236fb6db26d075c6c434266c5b53"><div class="ttname"><a href="uda-sample_8h.html#aac8e236fb6db26d075c6c434266c5b53">CountMerge</a></div><div class="ttdeci">void CountMerge(FunctionContext *context, const BigIntVal &amp;src, BigIntVal *dst)</div><div class="ttdef"><b>Definition:</b> <a href="uda-test_8cc_source.html#l00045">uda-test.cc:45</a></div></div>
<div class="ttc" id="namespaceimpala__udf_html_a233587ab404d9304f392b1eda6826ea5"><div class="ttname"><a href="namespaceimpala__udf.html#a233587ab404d9304f392b1eda6826ea5">impala_udf::BufferVal</a></div><div class="ttdeci">uint8_t * BufferVal</div><div class="ttdef"><b>Definition:</b> <a href="udf_8h_source.html#l00600">udf.h:600</a></div></div>
<div class="ttc" id="uda-sample_8h_html_adb989c3d19aa394888bfe5722c835c28"><div class="ttname"><a href="uda-sample_8h.html#adb989c3d19aa394888bfe5722c835c28">StringConcatFinalize</a></div><div class="ttdeci">StringVal StringConcatFinalize(FunctionContext *context, const StringVal &amp;val)</div><div class="ttdef"><b>Definition:</b> <a href="uda-sample_8cc_source.html#l00104">uda-sample.cc:104</a></div></div>
<div class="ttc" id="classimpala__udf_1_1FunctionContext_html"><div class="ttname"><a href="classimpala__udf_1_1FunctionContext.html">impala_udf::FunctionContext</a></div><div class="ttdef"><b>Definition:</b> <a href="udf_8h_source.html#l00047">udf.h:47</a></div></div>
<div class="ttc" id="structimpala__udf_1_1StringVal_html"><div class="ttname"><a href="structimpala__udf_1_1StringVal.html">impala_udf::StringVal</a></div><div class="ttdef"><b>Definition:</b> <a href="udf_8h_source.html#l00521">udf.h:521</a></div></div>
<div class="ttc" id="uda-sample_8h_html_a9a5c023bfcf2f10968d52724590fbc9b"><div class="ttname"><a href="uda-sample_8h.html#a9a5c023bfcf2f10968d52724590fbc9b">StringConcatUpdate</a></div><div class="ttdeci">void StringConcatUpdate(FunctionContext *context, const StringVal &amp;arg1, const StringVal &amp;arg2, StringVal *val)</div><div class="ttdef"><b>Definition:</b> <a href="uda-sample_8cc_source.html#l00083">uda-sample.cc:83</a></div></div>
<div class="ttc" id="structimpala__udf_1_1IntVal_html"><div class="ttname"><a href="structimpala__udf_1_1IntVal.html">impala_udf::IntVal</a></div><div class="ttdef"><b>Definition:</b> <a href="udf_8h_source.html#l00420">udf.h:420</a></div></div>
<div class="ttc" id="structimpala__udf_1_1BigIntVal_html"><div class="ttname"><a href="structimpala__udf_1_1BigIntVal.html">impala_udf::BigIntVal</a></div><div class="ttdef"><b>Definition:</b> <a href="udf_8h_source.html#l00439">udf.h:439</a></div></div>
<div class="ttc" id="uda-sample_8h_html_a1beb385e2adb1c750336e51e4feb6390"><div class="ttname"><a href="uda-sample_8h.html#a1beb385e2adb1c750336e51e4feb6390">StringConcatInit</a></div><div class="ttdeci">void StringConcatInit(FunctionContext *context, StringVal *val)</div><div class="ttdef"><b>Definition:</b> <a href="uda-sample_8cc_source.html#l00079">uda-sample.cc:79</a></div></div>
<div class="ttc" id="uda-sample_8h_html_a39881c9365b577a6949a5d179c071abb"><div class="ttname"><a href="uda-sample_8h.html#a39881c9365b577a6949a5d179c071abb">AvgInit</a></div><div class="ttdeci">void AvgInit(FunctionContext *context, BufferVal *val)</div><div class="ttdef"><b>Definition:</b> <a href="uda-sample_8cc_source.html#l00049">uda-sample.cc:49</a></div></div>
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