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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.rel.core</a></div>
<h2 title="Class TableFunctionScan" class="title">Class TableFunctionScan</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li><a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">org.apache.calcite.rel.AbstractRelNode</a></li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.rel.core.TableFunctionScan</li>
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<dt>All Implemented Interfaces:</dt>
<dd><code>java.lang.Cloneable</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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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="../../adapter/enumerable/EnumerableTableFunctionScan.html" title="class in org.apache.calcite.adapter.enumerable">EnumerableTableFunctionScan</a></code>, <code><a href="../logical/LogicalTableFunctionScan.html" title="class in org.apache.calcite.rel.logical">LogicalTableFunctionScan</a></code></dd>
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<hr>
<pre>public abstract class <span class="typeNameLabel">TableFunctionScan</span>
extends <a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></pre>
<div class="block">Relational expression that calls a table-valued function.
<p>The function returns a result set.
It can appear as a leaf in a query tree,
or can be applied to relational inputs.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../logical/LogicalTableFunctionScan.html" title="class in org.apache.calcite.rel.logical"><code>LogicalTableFunctionScan</code></a></dd>
</dl>
</li>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.calcite.rel.<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></h3>
<code><a href="../RelNode.Context.html" title="interface in org.apache.calcite.rel">RelNode.Context</a></code></li>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected com.google.common.collect.ImmutableSet&lt;<a href="../metadata/RelColumnMapping.html" title="class in org.apache.calcite.rel.metadata">RelColumnMapping</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#columnMappings">columnMappings</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private java.lang.reflect.Type</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#elementType">elementType</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private com.google.common.collect.ImmutableList&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="#inputs">inputs</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <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="#rexCall">rexCall</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<h3>Fields inherited from class&nbsp;org.apache.calcite.rel.<a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></h3>
<code><a href="../AbstractRelNode.html#digest">digest</a>, <a href="../AbstractRelNode.html#id">id</a>, <a href="../AbstractRelNode.html#rowType">rowType</a>, <a href="../AbstractRelNode.html#traitSet">traitSet</a></code></li>
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<h3>Constructor Summary</h3>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier</th>
<th class="colSecond" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
<td class="colFirst"><code>protected </code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.plan.RelOptCluster,org.apache.calcite.plan.RelTraitSet,java.util.List,org.apache.calcite.rex.RexNode,java.lang.reflect.Type,org.apache.calcite.rel.type.RelDataType,java.util.Set)">TableFunctionScan</a></span>&#8203;(<a href="../../plan/RelOptCluster.html" title="class in org.apache.calcite.plan">RelOptCluster</a>&nbsp;cluster,
<a href="../../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a>&nbsp;traitSet,
java.util.List&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;rexCall,
java.lang.reflect.Type&nbsp;elementType,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
java.util.Set&lt;<a href="../metadata/RelColumnMapping.html" title="class in org.apache.calcite.rel.metadata">RelColumnMapping</a>&gt;&nbsp;columnMappings)</code></th>
<td class="colLast">
<div class="block">Creates a <code>TableFunctionScan</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected </code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.rel.RelInput)">TableFunctionScan</a></span>&#8203;(<a href="../RelInput.html" title="interface in org.apache.calcite.rel">RelInput</a>&nbsp;input)</code></th>
<td class="colLast">
<div class="block">Creates a TableFunctionScan by parsing serialized output.</div>
</td>
</tr>
</table>
</li>
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<h3>Method Summary</h3>
<table class="memberSummary">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<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 id="i0" class="altColor">
<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 id="i1" class="rowColor">
<td class="colFirst"><code><a href="TableFunctionScan.html" title="class in org.apache.calcite.rel.core">TableFunctionScan</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,
java.util.List&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 id="i2" class="altColor">
<td class="colFirst"><code>abstract <a href="TableFunctionScan.html" title="class in org.apache.calcite.rel.core">TableFunctionScan</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copy(org.apache.calcite.plan.RelTraitSet,java.util.List,org.apache.calcite.rex.RexNode,java.lang.reflect.Type,org.apache.calcite.rel.type.RelDataType,java.util.Set)">copy</a></span>&#8203;(<a href="../../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a>&nbsp;traitSet,
java.util.List&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;rexCall,
java.lang.reflect.Type&nbsp;elementType,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
java.util.Set&lt;<a href="../metadata/RelColumnMapping.html" title="class in org.apache.calcite.rel.metadata">RelColumnMapping</a>&gt;&nbsp;columnMappings)</code></th>
<td class="colLast">
<div class="block">Copies this relational expression, substituting traits and
inputs.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery)">estimateRowCount</a></span>&#8203;(<a href="../metadata/RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">
<div class="block">Returns an estimate of the number of rows this relational expression will
return.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<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 id="i5" class="rowColor">
<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="#getCall()">getCall</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns function invocation expression.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>java.util.List&lt;<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="#getChildExps()">getChildExps</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a list of this relational expression's child expressions.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>java.util.Set&lt;<a href="../metadata/RelColumnMapping.html" title="class in org.apache.calcite.rel.metadata">RelColumnMapping</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getColumnMappings()">getColumnMappings</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns set of mappings known for this table function, or null if unknown
(not the same as empty!).</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>java.lang.reflect.Type</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getElementType()">getElementType</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns element type of the collection that will implement this table.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>java.util.List&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 id="i10" class="altColor">
<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>
</table>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.rel.<a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">AbstractRelNode</a></h3>
<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#computeDigest()">computeDigest</a>, <a href="../AbstractRelNode.html#computeSelfCost(org.apache.calcite.plan.RelOptPlanner)">computeSelfCost</a>, <a href="../AbstractRelNode.html#computeSelfCost(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.rel.metadata.RelMetadataQuery)">computeSelfCost</a>, <a href="../AbstractRelNode.html#deriveRowType()">deriveRowType</a>, <a href="../AbstractRelNode.html#equals(java.lang.Object)">equals</a>, <a href="../AbstractRelNode.html#explain(org.apache.calcite.rel.RelWriter)">explain</a>, <a href="../AbstractRelNode.html#getCluster()">getCluster</a>, <a href="../AbstractRelNode.html#getCollationList()">getCollationList</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#getQuery()">getQuery</a>, <a href="../AbstractRelNode.html#getRelTypeName()">getRelTypeName</a>, <a href="../AbstractRelNode.html#getRows()">getRows</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#getVariablesStopped()">getVariablesStopped</a>, <a href="../AbstractRelNode.html#hashCode()">hashCode</a>, <a href="../AbstractRelNode.html#isDistinct()">isDistinct</a>, <a href="../AbstractRelNode.html#isKey(org.apache.calcite.util.ImmutableBitSet)">isKey</a>, <a href="../AbstractRelNode.html#isValid(boolean)">isValid</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></li>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</code></li>
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<h4>rexCall</h4>
<pre>private final&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> rexCall</pre>
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<a id="elementType">
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<h4>elementType</h4>
<pre>private final&nbsp;java.lang.reflect.Type elementType</pre>
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<h4>inputs</h4>
<pre>private&nbsp;com.google.common.collect.ImmutableList&lt;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt; inputs</pre>
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<pre>protected final&nbsp;com.google.common.collect.ImmutableSet&lt;<a href="../metadata/RelColumnMapping.html" title="class in org.apache.calcite.rel.metadata">RelColumnMapping</a>&gt; columnMappings</pre>
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<a id="&lt;init&gt;(org.apache.calcite.plan.RelOptCluster,org.apache.calcite.plan.RelTraitSet,java.util.List,org.apache.calcite.rex.RexNode,java.lang.reflect.Type,org.apache.calcite.rel.type.RelDataType,java.util.Set)">
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<h4>TableFunctionScan</h4>
<pre>protected&nbsp;TableFunctionScan&#8203;(<a href="../../plan/RelOptCluster.html" title="class in org.apache.calcite.plan">RelOptCluster</a>&nbsp;cluster,
<a href="../../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a>&nbsp;traitSet,
java.util.List&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;rexCall,
java.lang.reflect.Type&nbsp;elementType,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
java.util.Set&lt;<a href="../metadata/RelColumnMapping.html" title="class in org.apache.calcite.rel.metadata">RelColumnMapping</a>&gt;&nbsp;columnMappings)</pre>
<div class="block">Creates a <code>TableFunctionScan</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cluster</code> - Cluster that this relational expression belongs to</dd>
<dd><code>inputs</code> - 0 or more relational inputs</dd>
<dd><code>traitSet</code> - Trait set</dd>
<dd><code>rexCall</code> - Function invocation expression</dd>
<dd><code>elementType</code> - Element type of the collection that will implement
this table</dd>
<dd><code>rowType</code> - Row type produced by function</dd>
<dd><code>columnMappings</code> - Column mappings associated with this function</dd>
</dl>
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<h4>TableFunctionScan</h4>
<pre>protected&nbsp;TableFunctionScan&#8203;(<a href="../RelInput.html" title="interface in org.apache.calcite.rel">RelInput</a>&nbsp;input)</pre>
<div class="block">Creates a TableFunctionScan by parsing serialized output.</div>
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<pre class="methodSignature">public final&nbsp;<a href="TableFunctionScan.html" title="class in org.apache.calcite.rel.core">TableFunctionScan</a>&nbsp;copy&#8203;(<a href="../../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a>&nbsp;traitSet,
java.util.List&lt;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;inputs)</pre>
<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.</p></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>
</li>
</ul>
<a id="copy(org.apache.calcite.plan.RelTraitSet,java.util.List,org.apache.calcite.rex.RexNode,java.lang.reflect.Type,org.apache.calcite.rel.type.RelDataType,java.util.Set)">
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<pre class="methodSignature">public abstract&nbsp;<a href="TableFunctionScan.html" title="class in org.apache.calcite.rel.core">TableFunctionScan</a>&nbsp;copy&#8203;(<a href="../../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a>&nbsp;traitSet,
java.util.List&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;rexCall,
java.lang.reflect.Type&nbsp;elementType,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
java.util.Set&lt;<a href="../metadata/RelColumnMapping.html" title="class in org.apache.calcite.rel.metadata">RelColumnMapping</a>&gt;&nbsp;columnMappings)</pre>
<div class="block">Copies this relational expression, substituting traits and
inputs.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>traitSet</code> - Traits</dd>
<dd><code>inputs</code> - 0 or more relational inputs</dd>
<dd><code>rexCall</code> - Function invocation expression</dd>
<dd><code>elementType</code> - Element type of the collection that will implement
this table</dd>
<dd><code>rowType</code> - Row type produced by function</dd>
<dd><code>columnMappings</code> - Column mappings associated with this function</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Copy of this relational expression, substituting traits and
inputs</dd>
</dl>
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<h4>getInputs</h4>
<pre class="methodSignature">public&nbsp;java.util.List&lt;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;getInputs()</pre>
<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>
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<h4>getChildExps</h4>
<pre class="methodSignature">public&nbsp;java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;getChildExps()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../RelNode.html#getChildExps()">RelNode</a></code></span></div>
<div class="block">Returns a list of this relational expression's child expressions.
(These are scalar expressions, and so do not include the relational
inputs that are returned by <a href="../RelNode.html#getInputs()"><code>RelNode.getInputs()</code></a>.
<p>The caller should treat the list as unmodifiable; typical
implementations will return an immutable list. If there are no
child expressions, returns an empty list, not <code>null</code>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../RelNode.html#getChildExps()">getChildExps</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#getChildExps()">getChildExps</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>List of this relational expression's child expressions</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../RelNode.html#accept(org.apache.calcite.rex.RexShuttle)"><code>RelNode.accept(org.apache.calcite.rex.RexShuttle)</code></a></dd>
</dl>
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<h4>accept</h4>
<pre class="methodSignature">public&nbsp;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;accept&#8203;(<a href="../../rex/RexShuttle.html" title="class in org.apache.calcite.rex">RexShuttle</a>&nbsp;shuttle)</pre>
<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>
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<h4>replaceInput</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;replaceInput&#8203;(int&nbsp;ordinalInParent,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;p)</pre>
<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>
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<h4>estimateRowCount</h4>
<pre class="methodSignature">public&nbsp;double&nbsp;estimateRowCount&#8203;(<a href="../metadata/RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../RelNode.html#estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery)">RelNode</a></code></span></div>
<div class="block">Returns an estimate of the number of rows this relational expression will
return.
<p>NOTE jvs 29-Mar-2006: Don't call this method directly. Instead, use
<a href="../metadata/RelMetadataQuery.html#getRowCount(org.apache.calcite.rel.RelNode)"><code>RelMetadataQuery.getRowCount(org.apache.calcite.rel.RelNode)</code></a>, which gives plugins a chance to
override the rel's default ideas about row count.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../RelNode.html#estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery)">estimateRowCount</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#estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery)">estimateRowCount</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>mq</code> - Metadata query</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Estimate of the number of rows this relational expression will
return</dd>
</dl>
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<h4>getCall</h4>
<pre class="methodSignature">public&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;getCall()</pre>
<div class="block">Returns function invocation expression.
<p>Within this rexCall, instances of
<a href="../../rex/RexInputRef.html" title="class in org.apache.calcite.rex"><code>RexInputRef</code></a> refer to entire input
<a href="../RelNode.html" title="interface in org.apache.calcite.rel"><code>RelNode</code></a>s rather than their fields.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>function invocation expression</dd>
</dl>
</li>
</ul>
<a id="explainTerms(org.apache.calcite.rel.RelWriter)">
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<h4>explainTerms</h4>
<pre class="methodSignature">public&nbsp;<a href="../RelWriter.html" title="interface in org.apache.calcite.rel">RelWriter</a>&nbsp;explainTerms&#8203;(<a href="../RelWriter.html" title="interface in org.apache.calcite.rel">RelWriter</a>&nbsp;pw)</pre>
<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="../externalize/RelWriterImpl.html#item(java.lang.String,java.lang.Object)"><code>RelWriterImpl.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>
</li>
</ul>
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<h4>getColumnMappings</h4>
<pre class="methodSignature">public&nbsp;java.util.Set&lt;<a href="../metadata/RelColumnMapping.html" title="class in org.apache.calcite.rel.metadata">RelColumnMapping</a>&gt;&nbsp;getColumnMappings()</pre>
<div class="block">Returns set of mappings known for this table function, or null if unknown
(not the same as empty!).</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>set of mappings known for this table function, or null if unknown
(not the same as empty!)</dd>
</dl>
</li>
</ul>
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<h4>getElementType</h4>
<pre class="methodSignature">public&nbsp;java.lang.reflect.Type&nbsp;getElementType()</pre>
<div class="block">Returns element type of the collection that will implement this table.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>element type of the collection that will implement this table</dd>
</dl>
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