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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 Calc" class="title">Class Calc</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<ul class="inheritance">
<li><a href="../AbstractRelNode.html" title="class in org.apache.calcite.rel">org.apache.calcite.rel.AbstractRelNode</a></li>
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<li>org.apache.calcite.rel.core.Calc</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>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="../../adapter/enumerable/EnumerableCalc.html" title="class in org.apache.calcite.adapter.enumerable">EnumerableCalc</a></code>, <code><a href="../logical/LogicalCalc.html" title="class in org.apache.calcite.rel.logical">LogicalCalc</a></code></dd>
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<pre>public abstract class <span class="typeNameLabel">Calc</span>
extends <a href="../SingleRel.html" title="class in org.apache.calcite.rel">SingleRel</a></pre>
<div class="block"><code>Calc</code> is an abstract base class for implementations of
<a href="../logical/LogicalCalc.html" title="class in org.apache.calcite.rel.logical"><code>LogicalCalc</code></a>.</div>
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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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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><code>protected <a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#program">program</a></span></code></th>
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<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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<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,org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexProgram)">Calc</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;traits,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
<a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a>&nbsp;program)</code></th>
<td class="colLast">
<div class="block">Creates a Calc.</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.plan.RelOptCluster,org.apache.calcite.plan.RelTraitSet,org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexProgram,java.util.List)">Calc</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;traits,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
<a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a>&nbsp;program,
java.util.List&lt;<a href="../RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a>&gt;&nbsp;collationList)</code></th>
<td class="colLast">
<div class="block"><span class="deprecatedLabel">Deprecated.</span></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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<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>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../plan/RelOptCost.html" title="interface in org.apache.calcite.plan">RelOptCost</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#computeSelfCost(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.rel.metadata.RelMetadataQuery)">computeSelfCost</a></span>&#8203;(<a href="../../plan/RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a>&nbsp;planner,
<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 the cost of this plan (not including children).</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="Calc.html" title="class in org.apache.calcite.rel.core">Calc</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="i3" class="rowColor">
<td class="colFirst"><code>abstract <a href="Calc.html" title="class in org.apache.calcite.rel.core">Calc</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copy(org.apache.calcite.plan.RelTraitSet,org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexProgram)">copy</a></span>&#8203;(<a href="../../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a>&nbsp;traitSet,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
<a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a>&nbsp;program)</code></th>
<td class="colLast">
<div class="block">Creates a copy of this <code>Calc</code>.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="Calc.html" title="class in org.apache.calcite.rel.core">Calc</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copy(org.apache.calcite.plan.RelTraitSet,org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexProgram,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="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
<a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a>&nbsp;program,
java.util.List&lt;<a href="../RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a>&gt;&nbsp;collationList)</code></th>
<td class="colLast">
<div class="block"><span class="deprecatedLabel">Deprecated.</span></div>
</td>
</tr>
<tr id="i5" 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="i6" 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="i7" class="rowColor">
<td class="colFirst"><code><a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getProgram()">getProgram</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isValid(org.apache.calcite.util.Litmus,org.apache.calcite.rel.RelNode.Context)">isValid</a></span>&#8203;(<a href="../../util/Litmus.html" title="interface in org.apache.calcite.util">Litmus</a>&nbsp;litmus,
<a href="../RelNode.Context.html" title="interface in org.apache.calcite.rel">RelNode.Context</a>&nbsp;context)</code></th>
<td class="colLast">
<div class="block">Returns whether this relational expression is valid.</div>
</td>
</tr>
</table>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.rel.<a href="../SingleRel.html" title="class in org.apache.calcite.rel">SingleRel</a></h3>
<code><a href="../SingleRel.html#childrenAccept(org.apache.calcite.rel.RelVisitor)">childrenAccept</a>, <a href="../SingleRel.html#deriveRowType()">deriveRowType</a>, <a href="../SingleRel.html#getInput()">getInput</a>, <a href="../SingleRel.html#getInputs()">getInputs</a>, <a href="../SingleRel.html#replaceInput(int,org.apache.calcite.rel.RelNode)">replaceInput</a></code></li>
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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#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#equals(java.lang.Object)">equals</a>, <a href="../AbstractRelNode.html#explain(org.apache.calcite.rel.RelWriter)">explain</a>, <a href="../AbstractRelNode.html#getChildExps()">getChildExps</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#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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<h3>Field Detail</h3>
<a id="program">
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<h4>program</h4>
<pre>protected final&nbsp;<a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a> program</pre>
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<h3>Constructor Detail</h3>
<a id="&lt;init&gt;(org.apache.calcite.plan.RelOptCluster,org.apache.calcite.plan.RelTraitSet,org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexProgram)">
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<h4>Calc</h4>
<pre>protected&nbsp;Calc&#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;traits,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
<a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a>&nbsp;program)</pre>
<div class="block">Creates a Calc.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cluster</code> - Cluster</dd>
<dd><code>traits</code> - Traits</dd>
<dd><code>child</code> - Input relation</dd>
<dd><code>program</code> - Calc program</dd>
</dl>
</li>
</ul>
<a id="&lt;init&gt;(org.apache.calcite.plan.RelOptCluster,org.apache.calcite.plan.RelTraitSet,org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexProgram,java.util.List)">
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<h4>Calc</h4>
<pre>@Deprecated
protected&nbsp;Calc&#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;traits,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
<a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a>&nbsp;program,
java.util.List&lt;<a href="../RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a>&gt;&nbsp;collationList)</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div>
</li>
</ul>
</li>
</ul>
</section>
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<h3>Method Detail</h3>
<a id="copy(org.apache.calcite.plan.RelTraitSet,java.util.List)">
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<h4>copy</h4>
<pre class="methodSignature">public final&nbsp;<a href="Calc.html" title="class in org.apache.calcite.rel.core">Calc</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,org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexProgram)">
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<h4>copy</h4>
<pre class="methodSignature">public abstract&nbsp;<a href="Calc.html" title="class in org.apache.calcite.rel.core">Calc</a>&nbsp;copy&#8203;(<a href="../../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a>&nbsp;traitSet,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
<a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a>&nbsp;program)</pre>
<div class="block">Creates a copy of this <code>Calc</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>traitSet</code> - Traits</dd>
<dd><code>child</code> - Input relation</dd>
<dd><code>program</code> - Calc program</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>New <code>Calc</code> if any parameter differs from the value of this
<code>Calc</code>, or just <code>this</code> if all the parameters are the same</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="#copy(org.apache.calcite.plan.RelTraitSet,java.util.List)"><code>copy(org.apache.calcite.plan.RelTraitSet, java.util.List)</code></a></dd>
</dl>
</li>
</ul>
<a id="copy(org.apache.calcite.plan.RelTraitSet,org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexProgram,java.util.List)">
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<h4>copy</h4>
<pre class="methodSignature">@Deprecated
public&nbsp;<a href="Calc.html" title="class in org.apache.calcite.rel.core">Calc</a>&nbsp;copy&#8203;(<a href="../../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a>&nbsp;traitSet,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
<a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a>&nbsp;program,
java.util.List&lt;<a href="../RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a>&gt;&nbsp;collationList)</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div>
</li>
</ul>
<a id="isValid(org.apache.calcite.util.Litmus,org.apache.calcite.rel.RelNode.Context)">
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<h4>isValid</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;isValid&#8203;(<a href="../../util/Litmus.html" title="interface in org.apache.calcite.util">Litmus</a>&nbsp;litmus,
<a href="../RelNode.Context.html" title="interface in org.apache.calcite.rel">RelNode.Context</a>&nbsp;context)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../RelNode.html#isValid(org.apache.calcite.util.Litmus,org.apache.calcite.rel.RelNode.Context)">RelNode</a></code></span></div>
<div class="block">Returns whether this relational expression is valid.
<p>If assertions are enabled, this method is typically called with <code>
litmus</code> = <code>THROW</code>, as follows:
<blockquote>
<pre>assert rel.isValid(Litmus.THROW)</pre>
</blockquote>
<p>This signals that the method can throw an <code>AssertionError</code> if it
is not valid.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../RelNode.html#isValid(org.apache.calcite.util.Litmus,org.apache.calcite.rel.RelNode.Context)">isValid</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#isValid(org.apache.calcite.util.Litmus,org.apache.calcite.rel.RelNode.Context)">isValid</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>litmus</code> - What to do if invalid</dd>
<dd><code>context</code> - Context for validity checking</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Whether relational expression is valid</dd>
</dl>
</li>
</ul>
<a id="getProgram()">
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<h4>getProgram</h4>
<pre class="methodSignature">public&nbsp;<a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a>&nbsp;getProgram()</pre>
</li>
</ul>
<a id="estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery)">
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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="../SingleRel.html#estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery)">estimateRowCount</a></code>&nbsp;in class&nbsp;<code><a href="../SingleRel.html" title="class in org.apache.calcite.rel">SingleRel</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>
</li>
</ul>
<a id="computeSelfCost(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.rel.metadata.RelMetadataQuery)">
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<h4>computeSelfCost</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptCost.html" title="interface in org.apache.calcite.plan">RelOptCost</a>&nbsp;computeSelfCost&#8203;(<a href="../../plan/RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a>&nbsp;planner,
<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#computeSelfCost(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.rel.metadata.RelMetadataQuery)">RelNode</a></code></span></div>
<div class="block">Returns the cost of this plan (not including children). The base
implementation throws an error; derived classes should override.
<p>NOTE jvs 29-Mar-2006: Don't call this method directly. Instead, use
<a href="../metadata/RelMetadataQuery.html#getNonCumulativeCost(org.apache.calcite.rel.RelNode)"><code>RelMetadataQuery.getNonCumulativeCost(org.apache.calcite.rel.RelNode)</code></a>, which gives plugins a
chance to override the rel's default ideas about cost.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../RelNode.html#computeSelfCost(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.rel.metadata.RelMetadataQuery)">computeSelfCost</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#computeSelfCost(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.rel.metadata.RelMetadataQuery)">computeSelfCost</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>planner</code> - Planner for cost calculation</dd>
<dd><code>mq</code> - Metadata query</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Cost of this plan (not including children)</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="../SingleRel.html#explainTerms(org.apache.calcite.rel.RelWriter)">explainTerms</a></code>&nbsp;in class&nbsp;<code><a href="../SingleRel.html" title="class in org.apache.calcite.rel">SingleRel</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>
<a id="accept(org.apache.calcite.rex.RexShuttle)">
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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>
</li>
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