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<h2 title="Uses of Class org.apache.hadoop.mapred.join.TupleWritable" class="title">Uses of Class<br>org.apache.hadoop.mapred.join.TupleWritable</h2>
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<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing packages, and an explanation">
<caption><span>Packages that use <a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Package</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.mapred.join">org.apache.hadoop.mapred.join</a></td>
<td class="colLast">&nbsp;</td>
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<h3>Uses of <a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a> in <a href="../../../../../../org/apache/hadoop/mapred/join/package-summary.html">org.apache.hadoop.mapred.join</a></h3>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../../org/apache/hadoop/mapred/join/package-summary.html">org.apache.hadoop.mapred.join</a> that return <a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a></code></td>
<td class="colLast"><span class="typeNameLabel">CompositeRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/join/CompositeRecordReader.html#createInternalValue--">createInternalValue</a></span>()</code>
<div class="block">Create a value to be used internally for joins.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a></code></td>
<td class="colLast"><span class="typeNameLabel">JoinRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.html#createValue--">createValue</a></span>()</code>
<div class="block">Create an object of the appropriate type to be used as a value.</div>
</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../../org/apache/hadoop/mapred/join/package-summary.html">org.apache.hadoop.mapred.join</a> that return types with arguments of type <a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
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<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/mapred/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapred.join">ResetableIterator</a>&lt;<a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">JoinRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.html#getDelegate--">getDelegate</a></span>()</code>
<div class="block">Return an iterator wrapping the JoinCollector.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/mapred/join/ComposableRecordReader.html" title="interface in org.apache.hadoop.mapred.join">ComposableRecordReader</a>&lt;<a href="../../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html" title="type parameter in CompositeInputFormat">K</a>,<a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">CompositeInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>
<div class="block">Construct a CompositeRecordReader for the children of this InputFormat
as defined in the init expression.</div>
</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../../org/apache/hadoop/mapred/join/package-summary.html">org.apache.hadoop.mapred.join</a> with parameters of type <a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>protected abstract boolean</code></td>
<td class="colLast"><span class="typeNameLabel">CompositeRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/join/CompositeRecordReader.html#combine-java.lang.Object:A-org.apache.hadoop.mapred.join.TupleWritable-">combine</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]&nbsp;srcs,
<a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a>&nbsp;value)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><span class="typeNameLabel">MultiFilterRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/join/MultiFilterRecordReader.html#combine-java.lang.Object:A-org.apache.hadoop.mapred.join.TupleWritable-">combine</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]&nbsp;srcs,
<a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a>&nbsp;dst)</code>
<div class="block">Default implementation offers <a href="../../../../../../org/apache/hadoop/mapred/join/MultiFilterRecordReader.html#emit-org.apache.hadoop.mapred.join.TupleWritable-"><code>MultiFilterRecordReader.emit(org.apache.hadoop.mapred.join.TupleWritable)</code></a> every Tuple from the
collector (the outer join of child RRs).</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><span class="typeNameLabel">OuterJoinRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/join/OuterJoinRecordReader.html#combine-java.lang.Object:A-org.apache.hadoop.mapred.join.TupleWritable-">combine</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]&nbsp;srcs,
<a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a>&nbsp;dst)</code>
<div class="block">Emit everything from the collector.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><span class="typeNameLabel">InnerJoinRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/join/InnerJoinRecordReader.html#combine-java.lang.Object:A-org.apache.hadoop.mapred.join.TupleWritable-">combine</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]&nbsp;srcs,
<a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a>&nbsp;dst)</code>
<div class="block">Return true iff the tuple is full (all data sources contain this key).</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected abstract <a href="../../../../../../org/apache/hadoop/mapred/join/MultiFilterRecordReader.html" title="type parameter in MultiFilterRecordReader">V</a></code></td>
<td class="colLast"><span class="typeNameLabel">MultiFilterRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/join/MultiFilterRecordReader.html#emit-org.apache.hadoop.mapred.join.TupleWritable-">emit</a></span>(<a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a>&nbsp;dst)</code>
<div class="block">For each tuple emitted, return a value (typically one of the values
in the tuple).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/mapred/join/OverrideRecordReader.html" title="type parameter in OverrideRecordReader">V</a></code></td>
<td class="colLast"><span class="typeNameLabel">OverrideRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/join/OverrideRecordReader.html#emit-org.apache.hadoop.mapred.join.TupleWritable-">emit</a></span>(<a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a>&nbsp;dst)</code>
<div class="block">Emit the value with the highest position in the tuple.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><span class="typeNameLabel">JoinRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.html#next-K-org.apache.hadoop.mapred.join.TupleWritable-">next</a></span>(<a href="../../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.html" title="type parameter in JoinRecordReader">K</a>&nbsp;key,
<a href="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a>&nbsp;value)</code>
<div class="block">Emit the next set of key, value pairs as defined by the child
RecordReaders and operation associated with this composite RR.</div>
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