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| <div class="subTitle">com.yahoo.sketches.pig.theta</div> |
| <h2 title="Class AexcludeB" class="title">Class AexcludeB</h2> |
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| <ul class="inheritance"> |
| <li>org.apache.pig.EvalFunc<org.apache.pig.data.Tuple></li> |
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| <pre>public class <span class="typeNameLabel">AexcludeB</span> |
| extends org.apache.pig.EvalFunc<org.apache.pig.data.Tuple></pre> |
| <div class="block">This is a Pig UDF that performs the A-NOT-B Set Operation on two given Sketches. Because this |
| operation is fundamentally asymetric, it is structured as a single stateless operation rather |
| than stateful as are Union and Intersection UDFs, which can be iterative. |
| The requirement to perform iterative A\B\C\... is rare. If needed, it can be rendered easily by |
| the caller.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Author:</span></dt> |
| <dd>Lee Rhodes</dd> |
| </dl> |
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| <code>org.apache.pig.EvalFunc.SchemaType</code></li> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../com/yahoo/sketches/pig/theta/AexcludeB.html#AexcludeB--">AexcludeB</a></span>()</code> |
| <div class="block">Default constructor to make pig validation happy.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../com/yahoo/sketches/pig/theta/AexcludeB.html#AexcludeB-long-">AexcludeB</a></span>(long seed)</code> |
| <div class="block">Base constructor.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../com/yahoo/sketches/pig/theta/AexcludeB.html#AexcludeB-java.lang.String-">AexcludeB</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> seedStr)</code> |
| <div class="block">String constructor.</div> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>org.apache.pig.data.Tuple</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../com/yahoo/sketches/pig/theta/AexcludeB.html#exec-org.apache.pig.data.Tuple-">exec</a></span>(org.apache.pig.data.Tuple inputTuple)</code> |
| <div class="block">Top Level Exec Function.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>org.apache.pig.impl.logicalLayer.schema.Schema</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../com/yahoo/sketches/pig/theta/AexcludeB.html#outputSchema-org.apache.pig.impl.logicalLayer.schema.Schema-">outputSchema</a></span>(org.apache.pig.impl.logicalLayer.schema.Schema input)</code> </td> |
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| <h3>Methods inherited from class org.apache.pig.EvalFunc</h3> |
| <code>allowCompileTimeCalculation, finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, needEndOfAllInputProcessing, progress, setEndOfAllInput, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn</code></li> |
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| <h4>AexcludeB</h4> |
| <pre>public AexcludeB()</pre> |
| <div class="block">Default constructor to make pig validation happy. Assumes: |
| <ul> |
| <li><a href="../../../../../resources/dictionary.html#defaultUpdateSeed">See Default Update Seed</a></li> |
| </ul></div> |
| </li> |
| </ul> |
| <a name="AexcludeB-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>AexcludeB</h4> |
| <pre>public AexcludeB(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> seedStr)</pre> |
| <div class="block">String constructor.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>seedStr</code> - <a href="../../../../../resources/dictionary.html#seed">See Update Hash Seed</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="AexcludeB-long-"> |
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| <h4>AexcludeB</h4> |
| <pre>public AexcludeB(long seed)</pre> |
| <div class="block">Base constructor.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>seed</code> - <a href="../../../../../resources/dictionary.html#seed">See Update Hash Seed</a>.</dd> |
| </dl> |
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| <h4>exec</h4> |
| <pre>public org.apache.pig.data.Tuple exec(org.apache.pig.data.Tuple inputTuple) |
| throws <a href="http://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Top Level Exec Function. |
| <p> |
| This method accepts a <b>Sketch AnotB Input Tuple</b> and returns a |
| <b>Sketch Tuple</b>. |
| </p> |
| |
| <b>Sketch AnotB Input Tuple</b> |
| <ul> |
| <li>Tuple: TUPLE (Must contain 2 fields): <br> |
| Java data type: Pig DataType: Description |
| <ul> |
| <li>index 0: DataByteArray: BYTEARRAY: Sketch A</li> |
| <li>index 1: DataByteArray: BYTEARRAY: Sketch B</li> |
| </ul> |
| </li> |
| </ul> |
| |
| <p> |
| Any other input tuple will throw an exception! |
| </p> |
| |
| <b>Sketch Tuple</b> |
| <ul> |
| <li>Tuple: TUPLE (Contains exactly 1 field) |
| <ul> |
| <li>index 0: DataByteArray: BYTEARRAY = The serialization of a Sketch object.</li> |
| </ul> |
| </li> |
| </ul></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>exec</code> in class <code>org.apache.pig.EvalFunc<org.apache.pig.data.Tuple></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>org.apache.pig.backend.executionengine.ExecException</code> - from Pig.</dd> |
| <dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
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| <h4>outputSchema</h4> |
| <pre>public org.apache.pig.impl.logicalLayer.schema.Schema outputSchema(org.apache.pig.impl.logicalLayer.schema.Schema input)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>outputSchema</code> in class <code>org.apache.pig.EvalFunc<org.apache.pig.data.Tuple></code></dd> |
| </dl> |
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