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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.rel.rules</a></div>
<h1 title="Class MultiJoin" class="title">Class MultiJoin</h1>
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<div class="inheritance"><a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">org.apache.calcite.rel.AbstractRelNode</a>
<div class="inheritance">org.apache.calcite.rel.rules.MultiJoin</div>
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Cloneable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Cloneable</a></code>, <code><a href="../../plan/RelOptNode.html" title="interface in org.apache.calcite.plan">RelOptNode</a></code>, <code><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></dd>
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<pre>public final class <span class="typeNameLabel">MultiJoin</span>
extends <a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></pre>
<div class="block">A MultiJoin represents a join of N inputs, whereas regular Joins
represent strictly binary joins.</div>
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<h2>Nested Class Summary</h2>
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<h2>Nested classes/interfaces inherited from interface&nbsp;org.apache.calcite.rel.<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></h2>
<a id="nested.classes.inherited.from.class.org.apache.calcite.rel.RelNode">
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</a><code><a href="../RelNode.Context.html" title="interface in org.apache.calcite.rel">RelNode.Context</a></code></div>
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<h2>Field Summary</h2>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
</thead>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>com.google.common.collect.ImmutableMap&lt;<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang" class="externalLink">Integer</a>,&#8203;<a href="../../util/ImmutableIntList.html" title="class in org.apache.calcite.util">ImmutableIntList</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#joinFieldRefCountsMap">joinFieldRefCountsMap</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
</tbody>
</table>
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<div class="inheritedList">
<h3>Fields inherited from class&nbsp;org.apache.calcite.rel.<a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></h3>
<a id="fields.inherited.from.class.org.apache.calcite.rel.AbstractRelNode">
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</a><code><a href="../AbstractRelNode.html#digest">digest</a>, <a href="../AbstractRelNode.html#id">id</a>, <a href="../AbstractRelNode.html#traitSet">traitSet</a></code></div>
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<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.plan.RelOptCluster,java.util.List,org.apache.calcite.rex.RexNode,org.apache.calcite.rel.type.RelDataType,boolean,java.util.List,java.util.List,java.util.List,com.google.common.collect.ImmutableMap,org.apache.calcite.rex.RexNode)">MultiJoin</a></span>&#8203;(<a href="../../plan/RelOptCluster.html" title="class in org.apache.calcite.plan">RelOptCluster</a>&nbsp;cluster,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;inputs,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;joinFilter,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
boolean&nbsp;isFullOuterJoin,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;? extends @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;outerJoinConditions,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../core/JoinRelType.html" title="enum in org.apache.calcite.rel.core">JoinRelType</a>&gt;&nbsp;joinTypes,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;? extends @Nullable <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&gt;&nbsp;projFields,
com.google.common.collect.ImmutableMap&lt;<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang" class="externalLink">Integer</a>,&#8203;<a href="../../util/ImmutableIntList.html" title="class in org.apache.calcite.util">ImmutableIntList</a>&gt;&nbsp;joinFieldRefCountsMap,
@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;postJoinFilter)</code></th>
<td class="colLast">
<div class="block">Constructs a MultiJoin.</div>
</td>
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<h2>Method Summary</h2>
<div class="memberSummary">
<div role="tablist" aria-orientation="horizontal"><button role="tab" aria-selected="true" aria-controls="memberSummary_tabpanel" tabindex="0" onkeydown="switchTab(event)" id="t0" class="activeTableTab">All Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t2" class="tableTab" onclick="show(2);">Instance Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t4" class="tableTab" onclick="show(8);">Concrete Methods</button></div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor" id="i0">
<td class="colFirst"><code><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#accept(org.apache.calcite.rex.RexShuttle)">accept</a></span>&#8203;(<a href="../../rex/RexShuttle.html" title="class in org.apache.calcite.rex">RexShuttle</a>&nbsp;shuttle)</code></th>
<td class="colLast">
<div class="block">Accepts a visit from a shuttle.</div>
</td>
</tr>
<tr class="rowColor" id="i1">
<td class="colFirst"><code><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copy(org.apache.calcite.plan.RelTraitSet,java.util.List)">copy</a></span>&#8203;(<a href="../../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a>&nbsp;traitSet,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;inputs)</code></th>
<td class="colLast">
<div class="block">Creates a copy of this relational expression, perhaps changing traits and
inputs.</div>
</td>
</tr>
<tr class="altColor" id="i2">
<td class="colFirst"><code><a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deriveRowType()">deriveRowType</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor" id="i3">
<td class="colFirst"><code><a href="../RelWriter.html" title="interface in org.apache.calcite.rel">RelWriter</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#explainTerms(org.apache.calcite.rel.RelWriter)">explainTerms</a></span>&#8203;(<a href="../RelWriter.html" title="interface in org.apache.calcite.rel">RelWriter</a>&nbsp;pw)</code></th>
<td class="colLast">
<div class="block">Describes the inputs and attributes of this relational expression.</div>
</td>
</tr>
<tr class="altColor" id="i4">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util" class="externalLink">Map</a>&lt;<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang" class="externalLink">Integer</a>,&#8203;int[]&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCopyJoinFieldRefCountsMap()">getCopyJoinFieldRefCountsMap</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a copy of the map of reference counts for each input, representing
the fields accessed in join conditions.</div>
</td>
</tr>
<tr class="rowColor" id="i5">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getInputs()">getInputs</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns an array of this relational expression's inputs.</div>
</td>
</tr>
<tr class="altColor" id="i6">
<td class="colFirst"><code>com.google.common.collect.ImmutableMap&lt;<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang" class="externalLink">Integer</a>,&#8203;<a href="../../util/ImmutableIntList.html" title="class in org.apache.calcite.util">ImmutableIntList</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getJoinFieldRefCountsMap()">getJoinFieldRefCountsMap</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the map of reference counts for each input, representing the fields
accessed in join conditions.</div>
</td>
</tr>
<tr class="rowColor" id="i7">
<td class="colFirst"><code><a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getJoinFilter()">getJoinFilter</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns join filters associated with this MultiJoin.</div>
</td>
</tr>
<tr class="altColor" id="i8">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../core/JoinRelType.html" title="enum in org.apache.calcite.rel.core">JoinRelType</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getJoinTypes()">getJoinTypes</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns join types of each input.</div>
</td>
</tr>
<tr class="rowColor" id="i9">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getOuterJoinConditions()">getOuterJoinConditions</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns outer join conditions for null-generating inputs.</div>
</td>
</tr>
<tr class="altColor" id="i10">
<td class="colFirst"><code>@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPostJoinFilter()">getPostJoinFilter</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns post-join filter associated with this MultiJoin.</div>
</td>
</tr>
<tr class="rowColor" id="i11">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;@Nullable <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getProjFields()">getProjFields</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns bitmaps representing the fields projected from each input; if an
entry is null, all fields are projected.</div>
</td>
</tr>
<tr class="altColor" id="i12">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isFullOuterJoin()">isFullOuterJoin</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns true if the MultiJoin corresponds to a full outer join.</div>
</td>
</tr>
<tr class="rowColor" id="i13">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#replaceInput(int,org.apache.calcite.rel.RelNode)">replaceInput</a></span>&#8203;(int&nbsp;ordinalInParent,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;p)</code></th>
<td class="colLast">
<div class="block">Replaces the <code>ordinalInParent</code><sup>th</sup> input.</div>
</td>
</tr>
</tbody>
</table>
</div>
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<div class="inheritedList">
<h3>Methods inherited from class&nbsp;org.apache.calcite.rel.<a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></h3>
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</a><code><a href="../AbstractRelNode.html#accept(org.apache.calcite.rel.RelShuttle)">accept</a>, <a href="../AbstractRelNode.html#childrenAccept(org.apache.calcite.rel.RelVisitor)">childrenAccept</a>, <a href="../AbstractRelNode.html#collectVariablesSet(java.util.Set)">collectVariablesSet</a>, <a href="../AbstractRelNode.html#collectVariablesUsed(java.util.Set)">collectVariablesUsed</a>, <a href="../AbstractRelNode.html#computeSelfCost(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.rel.metadata.RelMetadataQuery)">computeSelfCost</a>, <a href="../AbstractRelNode.html#deepEquals(java.lang.Object)">deepEquals</a>, <a href="../AbstractRelNode.html#deepHashCode()">deepHashCode</a>, <a href="../AbstractRelNode.html#equals(java.lang.Object)">equals</a>, <a href="../AbstractRelNode.html#estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery)">estimateRowCount</a>, <a href="../AbstractRelNode.html#explain(org.apache.calcite.rel.RelWriter)">explain</a>, <a href="../AbstractRelNode.html#getCluster()">getCluster</a>, <a href="../AbstractRelNode.html#getConvention()">getConvention</a>, <a href="../AbstractRelNode.html#getCorrelVariable()">getCorrelVariable</a>, <a href="../AbstractRelNode.html#getDescription()">getDescription</a>, <a href="../AbstractRelNode.html#getDigest()">getDigest</a>, <a href="../AbstractRelNode.html#getExpectedInputRowType(int)">getExpectedInputRowType</a>, <a href="../AbstractRelNode.html#getId()">getId</a>, <a href="../AbstractRelNode.html#getInput(int)">getInput</a>, <a href="../AbstractRelNode.html#getRelDigest()">getRelDigest</a>, <a href="../AbstractRelNode.html#getRelTypeName()">getRelTypeName</a>, <a href="../AbstractRelNode.html#getRowType()">getRowType</a>, <a href="../AbstractRelNode.html#getTable()">getTable</a>, <a href="../AbstractRelNode.html#getTraitSet()">getTraitSet</a>, <a href="../AbstractRelNode.html#getVariablesSet()">getVariablesSet</a>, <a href="../AbstractRelNode.html#hashCode()">hashCode</a>, <a href="../AbstractRelNode.html#isEnforcer()">isEnforcer</a>, <a href="../AbstractRelNode.html#isValid(org.apache.calcite.util.Litmus,org.apache.calcite.rel.RelNode.Context)">isValid</a>, <a href="../AbstractRelNode.html#metadata(java.lang.Class,org.apache.calcite.rel.metadata.RelMetadataQuery)">metadata</a>, <a href="../AbstractRelNode.html#onRegister(org.apache.calcite.plan.RelOptPlanner)">onRegister</a>, <a href="../AbstractRelNode.html#recomputeDigest()">recomputeDigest</a>, <a href="../AbstractRelNode.html#register(org.apache.calcite.plan.RelOptPlanner)">register</a>, <a href="../AbstractRelNode.html#sole(java.util.List)">sole</a>, <a href="../AbstractRelNode.html#toString()">toString</a></code></div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3>
<a id="methods.inherited.from.class.java.lang.Object">
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</a><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></div>
<div class="inheritedList">
<h3>Methods inherited from interface&nbsp;org.apache.calcite.rel.<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></h3>
<a id="methods.inherited.from.class.org.apache.calcite.rel.RelNode">
<!-- -->
</a><code><a href="../RelNode.html#explain()">explain</a>, <a href="../RelNode.html#fieldIsNullable(int)">fieldIsNullable</a></code></div>
</section>
</li>
</ul>
</section>
<section class="details">
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</a>
<h2>Field Details</h2>
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<li class="blockList">
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<h3><a id="joinFieldRefCountsMap">joinFieldRefCountsMap</a></h3>
<div class="memberSignature"><span class="modifiers">public final</span>&nbsp;<span class="returnType">com.google.common.collect.ImmutableMap&lt;<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang" class="externalLink">Integer</a>,&#8203;<a href="../../util/ImmutableIntList.html" title="class in org.apache.calcite.util">ImmutableIntList</a>&gt;</span>&nbsp;<span class="memberName">joinFieldRefCountsMap</span></div>
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<h2>Constructor Details</h2>
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<h3><a id="&lt;init&gt;(org.apache.calcite.plan.RelOptCluster,java.util.List,org.apache.calcite.rex.RexNode,org.apache.calcite.rel.type.RelDataType,boolean,java.util.List,java.util.List,java.util.List,com.google.common.collect.ImmutableMap,org.apache.calcite.rex.RexNode)">MultiJoin</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="memberName">MultiJoin</span>&#8203;(<span class="arguments"><a href="../../plan/RelOptCluster.html" title="class in org.apache.calcite.plan">RelOptCluster</a>&nbsp;cluster,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;inputs,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;joinFilter,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
boolean&nbsp;isFullOuterJoin,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;? extends @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;outerJoinConditions,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../core/JoinRelType.html" title="enum in org.apache.calcite.rel.core">JoinRelType</a>&gt;&nbsp;joinTypes,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;? extends @Nullable <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&gt;&nbsp;projFields,
com.google.common.collect.ImmutableMap&lt;<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang" class="externalLink">Integer</a>,&#8203;<a href="../../util/ImmutableIntList.html" title="class in org.apache.calcite.util">ImmutableIntList</a>&gt;&nbsp;joinFieldRefCountsMap,
@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;postJoinFilter)</span></div>
<div class="block">Constructs a MultiJoin.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cluster</code> - cluster that join belongs to</dd>
<dd><code>inputs</code> - inputs into this multi-join</dd>
<dd><code>joinFilter</code> - join filter applicable to this join node</dd>
<dd><code>rowType</code> - row type of the join result of this node</dd>
<dd><code>isFullOuterJoin</code> - true if the join is a full outer join</dd>
<dd><code>outerJoinConditions</code> - outer join condition associated with each join
input, if the input is null-generating in a
left or right outer join; null otherwise</dd>
<dd><code>joinTypes</code> - the join type corresponding to each input; if
an input is null-generating in a left or right
outer join, the entry indicates the type of
outer join; otherwise, the entry is set to
INNER</dd>
<dd><code>projFields</code> - fields that will be projected from each input;
if null, projection information is not
available yet so it's assumed that all fields
from the input are projected</dd>
<dd><code>joinFieldRefCountsMap</code> - counters of the number of times each field
is referenced in join conditions, indexed by
the input #</dd>
<dd><code>postJoinFilter</code> - filter to be applied after the joins are</dd>
</dl>
</section>
</li>
</ul>
</section>
</li>
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<h2>Method Details</h2>
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<h3><a id="replaceInput(int,org.apache.calcite.rel.RelNode)">replaceInput</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType">void</span>&nbsp;<span class="memberName">replaceInput</span>&#8203;(<span class="arguments">int&nbsp;ordinalInParent,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;p)</span></div>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../RelNode.html#replaceInput(int,org.apache.calcite.rel.RelNode)">RelNode</a></code></span></div>
<div class="block">Replaces the <code>ordinalInParent</code><sup>th</sup> input. You must
override this method if you override <a href="../RelNode.html#getInputs()"><code>RelNode.getInputs()</code></a>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../RelNode.html#replaceInput(int,org.apache.calcite.rel.RelNode)">replaceInput</a></code>&nbsp;in interface&nbsp;<code><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../AbstractRelNode.html#replaceInput(int,org.apache.calcite.rel.RelNode)">replaceInput</a></code>&nbsp;in class&nbsp;<code><a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ordinalInParent</code> - Position of the child input, 0 is the first</dd>
<dd><code>p</code> - New node that should be put at position <code>ordinalInParent</code></dd>
</dl>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="copy(org.apache.calcite.plan.RelTraitSet,java.util.List)">copy</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType"><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></span>&nbsp;<span class="memberName">copy</span>&#8203;(<span class="arguments"><a href="../../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a>&nbsp;traitSet,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;inputs)</span></div>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../RelNode.html#copy(org.apache.calcite.plan.RelTraitSet,java.util.List)">RelNode</a></code></span></div>
<div class="block">Creates a copy of this relational expression, perhaps changing traits and
inputs.
<p>Sub-classes with other important attributes are encouraged to create
variants of this method with more parameters.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../RelNode.html#copy(org.apache.calcite.plan.RelTraitSet,java.util.List)">copy</a></code>&nbsp;in interface&nbsp;<code><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../AbstractRelNode.html#copy(org.apache.calcite.plan.RelTraitSet,java.util.List)">copy</a></code>&nbsp;in class&nbsp;<code><a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>traitSet</code> - Trait set</dd>
<dd><code>inputs</code> - Inputs</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Copy of this relational expression, substituting traits and
inputs</dd>
</dl>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="explainTerms(org.apache.calcite.rel.RelWriter)">explainTerms</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType"><a href="../RelWriter.html" title="interface in org.apache.calcite.rel">RelWriter</a></span>&nbsp;<span class="memberName">explainTerms</span>&#8203;(<span class="arguments"><a href="../RelWriter.html" title="interface in org.apache.calcite.rel">RelWriter</a>&nbsp;pw)</span></div>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../AbstractRelNode.html#explainTerms(org.apache.calcite.rel.RelWriter)">AbstractRelNode</a></code></span></div>
<div class="block">Describes the inputs and attributes of this relational expression.
Each node should call <code>super.explainTerms</code>, then call the
<a href="../RelWriter.html#input(java.lang.String,org.apache.calcite.rel.RelNode)"><code>RelWriter.input(String, RelNode)</code></a>
and
<a href="../RelWriter.html#item(java.lang.String,java.lang.Object)"><code>RelWriter.item(String, Object)</code></a>
methods for each input and attribute.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../AbstractRelNode.html#explainTerms(org.apache.calcite.rel.RelWriter)">explainTerms</a></code>&nbsp;in class&nbsp;<code><a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pw</code> - Plan writer</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Plan writer for fluent-explain pattern</dd>
</dl>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="deriveRowType()">deriveRowType</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType"><a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="memberName">deriveRowType</span>()</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../AbstractRelNode.html#deriveRowType()">deriveRowType</a></code>&nbsp;in class&nbsp;<code><a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></code></dd>
</dl>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="getInputs()">getInputs</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType"><a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;</span>&nbsp;<span class="memberName">getInputs</span>()</div>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../RelNode.html#getInputs()">RelNode</a></code></span></div>
<div class="block">Returns an array of this relational expression's inputs. If there are no
inputs, returns an empty list, not <code>null</code>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../RelNode.html#getInputs()">getInputs</a></code>&nbsp;in interface&nbsp;<code><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../plan/RelOptNode.html#getInputs()">getInputs</a></code>&nbsp;in interface&nbsp;<code><a href="../../plan/RelOptNode.html" title="interface in org.apache.calcite.plan">RelOptNode</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../AbstractRelNode.html#getInputs()">getInputs</a></code>&nbsp;in class&nbsp;<code><a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Array of this relational expression's inputs</dd>
</dl>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="accept(org.apache.calcite.rex.RexShuttle)">accept</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType"><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></span>&nbsp;<span class="memberName">accept</span>&#8203;(<span class="arguments"><a href="../../rex/RexShuttle.html" title="class in org.apache.calcite.rex">RexShuttle</a>&nbsp;shuttle)</span></div>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../RelNode.html#accept(org.apache.calcite.rex.RexShuttle)">RelNode</a></code></span></div>
<div class="block">Accepts a visit from a shuttle. If the shuttle updates expression, then
a copy of the relation should be created. This new relation might have
a different row-type.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../RelNode.html#accept(org.apache.calcite.rex.RexShuttle)">accept</a></code>&nbsp;in interface&nbsp;<code><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../AbstractRelNode.html#accept(org.apache.calcite.rex.RexShuttle)">accept</a></code>&nbsp;in class&nbsp;<code><a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>shuttle</code> - Shuttle</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A copy of this node incorporating changes made by the shuttle to
this node's children</dd>
</dl>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="getJoinFilter()">getJoinFilter</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType"><a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></span>&nbsp;<span class="memberName">getJoinFilter</span>()</div>
<div class="block">Returns join filters associated with this MultiJoin.</div>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="isFullOuterJoin()">isFullOuterJoin</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType">boolean</span>&nbsp;<span class="memberName">isFullOuterJoin</span>()</div>
<div class="block">Returns true if the MultiJoin corresponds to a full outer join.</div>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="getOuterJoinConditions()">getOuterJoinConditions</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType"><a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</span>&nbsp;<span class="memberName">getOuterJoinConditions</span>()</div>
<div class="block">Returns outer join conditions for null-generating inputs.</div>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="getJoinTypes()">getJoinTypes</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType"><a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="../core/JoinRelType.html" title="enum in org.apache.calcite.rel.core">JoinRelType</a>&gt;</span>&nbsp;<span class="memberName">getJoinTypes</span>()</div>
<div class="block">Returns join types of each input.</div>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="getProjFields()">getProjFields</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType"><a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;@Nullable <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&gt;</span>&nbsp;<span class="memberName">getProjFields</span>()</div>
<div class="block">Returns bitmaps representing the fields projected from each input; if an
entry is null, all fields are projected.</div>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="getJoinFieldRefCountsMap()">getJoinFieldRefCountsMap</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType">com.google.common.collect.ImmutableMap&lt;<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang" class="externalLink">Integer</a>,&#8203;<a href="../../util/ImmutableIntList.html" title="class in org.apache.calcite.util">ImmutableIntList</a>&gt;</span>&nbsp;<span class="memberName">getJoinFieldRefCountsMap</span>()</div>
<div class="block">Returns the map of reference counts for each input, representing the fields
accessed in join conditions.</div>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="getCopyJoinFieldRefCountsMap()">getCopyJoinFieldRefCountsMap</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType"><a href="https://docs.oracle.com/javase/9/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util" class="externalLink">Map</a>&lt;<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang" class="externalLink">Integer</a>,&#8203;int[]&gt;</span>&nbsp;<span class="memberName">getCopyJoinFieldRefCountsMap</span>()</div>
<div class="block">Returns a copy of the map of reference counts for each input, representing
the fields accessed in join conditions.</div>
</section>
</li>
<li class="blockList">
<section class="detail">
<h3><a id="getPostJoinFilter()">getPostJoinFilter</a></h3>
<div class="memberSignature"><span class="modifiers">public</span>&nbsp;<span class="returnType">@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></span>&nbsp;<span class="memberName">getPostJoinFilter</span>()</div>
<div class="block">Returns post-join filter associated with this MultiJoin.</div>
</section>
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