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<title>RelOptRuleCall (Apache Calcite API)</title>
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<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.plan</a></div>
<h1 title="Class RelOptRuleCall" class="title">Class RelOptRuleCall</h1>
</div>
<div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
<div class="inheritance">org.apache.calcite.plan.RelOptRuleCall</div>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="hep/HepRuleCall.html" title="class in org.apache.calcite.plan.hep">HepRuleCall</a></code>, <code><a href="volcano/VolcanoRuleCall.html" title="class in org.apache.calcite.plan.volcano">VolcanoRuleCall</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">RelOptRuleCall</span>
<span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></span></div>
<div class="block">A <code>RelOptRuleCall</code> is an invocation of a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a> with a
set of <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel"><code>relational expression</code></a>s as arguments.</div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- =========== FIELD SUMMARY =========== -->
<li>
<section class="field-summary" id="field-summary">
<h2>Field Summary</h2>
<div class="caption"><span>Fields</span></div>
<div class="summary-table three-column-summary">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Field</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color"><code>final int</code></div>
<div class="col-second even-row-color"><code><a href="#id" class="member-name-link">id</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>protected static final org.slf4j.Logger</code></div>
<div class="col-second odd-row-color"><code><a href="#LOGGER" class="member-name-link">LOGGER</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
<div class="col-first even-row-color"><code>protected <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&gt;</code></div>
<div class="col-second even-row-color"><code><a href="#nodeInputs" class="member-name-link">nodeInputs</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>protected final <a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a></code></div>
<div class="col-second odd-row-color"><code><a href="#operand0" class="member-name-link">operand0</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
<div class="col-first even-row-color"><code>final <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>[]</code></div>
<div class="col-second even-row-color"><code><a href="#rels" class="member-name-link">rels</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>final <a href="RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></div>
<div class="col-second odd-row-color"><code><a href="#rule" class="member-name-link">rule</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
</div>
</section>
</li>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<li>
<section class="constructor-summary" id="constructor-summary">
<h2>Constructor Summary</h2>
<div class="caption"><span>Constructors</span></div>
<div class="summary-table three-column-summary">
<div class="table-header col-first">Modifier</div>
<div class="table-header col-second">Constructor</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color"><code>protected </code></div>
<div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.rel.RelNode%5B%5D,java.util.Map)" class="member-name-link">RelOptRuleCall</a><wbr>(<a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a>&nbsp;planner,
<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>&nbsp;operand,
<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>[]&nbsp;rels,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&gt;&nbsp;nodeInputs)</code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>protected </code></div>
<div class="col-constructor-name odd-row-color"><code><a href="#%3Cinit%3E(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.rel.RelNode%5B%5D,java.util.Map,java.util.List)" class="member-name-link">RelOptRuleCall</a><wbr>(<a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a>&nbsp;planner,
<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>&nbsp;operand,
<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>[]&nbsp;rels,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&gt;&nbsp;nodeInputs,
@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;parents)</code></div>
<div class="col-last odd-row-color">
<div class="block">Creates a RelOptRuleCall.</div>
</div>
</div>
</section>
</li>
<!-- ========== METHOD SUMMARY =========== -->
<li>
<section class="method-summary" id="method-summary">
<h2>Method Summary</h2>
<div id="method-summary-table">
<div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab3" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab3', 3)" class="table-tab">Abstract Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button><button id="method-summary-table-tab6" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab6', 3)" class="table-tab">Deprecated Methods</button></div>
<div id="method-summary-table.tabpanel" role="tabpanel">
<div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Method</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../tools/RelBuilder.html" title="class in org.apache.calcite.tools">RelBuilder</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#builder()" class="member-name-link">builder</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a <a href="../tools/RelBuilder.html" title="class in org.apache.calcite.tools"><code>RelBuilder</code></a> to be used by
code within the call.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getChildRels(org.apache.calcite.rel.RelNode)" class="member-name-link">getChildRels</a><wbr>(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns the children of a given relational expression node matched in a
rule.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../rel/metadata/RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getMetadataQuery()" class="member-name-link">getMetadataQuery</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns the current RelMetadataQuery
to be used for instance by
<a href="RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)"><code>RelOptRule.onMatch(RelOptRuleCall)</code></a>.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getOperand0()" class="member-name-link">getOperand0</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns the root operand matched by this rule.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getParents()" class="member-name-link">getParents</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns a list of parents of the first relational expression.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getPlanner()" class="member-name-link">getPlanner</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns the planner.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getRelList()" class="member-name-link">getRelList</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns a list of matched relational expressions.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4 method-summary-table-tab6"><code><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>[]</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4 method-summary-table-tab6"><code><a href="#getRels()" class="member-name-link">getRels</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4 method-summary-table-tab6">
<div class="block"><span class="deprecated-label">Deprecated.</span>
<div class="deprecation-comment">Use <a href="#getRelList()"><code>getRelList()</code></a> or <a href="#rel(int)"><code>rel(int)</code></a></div>
</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getRule()" class="member-name-link">getRule</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns the invoked planner rule.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#isRuleExcluded()" class="member-name-link">isRuleExcluded</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Determines whether the rule is excluded by any root node hint.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>&lt;T extends <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;<br>T</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#rel(int)" class="member-name-link">rel</a><wbr>(int&nbsp;ordinal)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Retrieves the <code>ordinal</code>th matched relational expression.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>protected void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#setChildRels(org.apache.calcite.rel.RelNode,java.util.List)" class="member-name-link">setChildRels</a><wbr>(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;inputs)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Assigns the input relational expressions of a given relational expression,
as seen by this particular call.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>final void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#transformTo(org.apache.calcite.rel.RelNode)" class="member-name-link">transformTo</a><wbr>(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Registers that a rule has produced an equivalent relational expression,
but no other equivalences.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#transformTo(org.apache.calcite.rel.RelNode,java.util.Map)" class="member-name-link">transformTo</a><wbr>(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,<wbr><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;equiv)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Registers that a rule has produced an equivalent relational expression,
with specified equivalences.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>abstract void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#transformTo(org.apache.calcite.rel.RelNode,java.util.Map,org.apache.calcite.plan.RelHintsPropagator)" class="member-name-link">transformTo</a><wbr>(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,<wbr><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;equiv,
<a href="RelHintsPropagator.html" title="interface in org.apache.calcite.plan">RelHintsPropagator</a>&nbsp;handler)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Registers that a rule has produced an equivalent relational expression.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>final void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#transformTo(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelHintsPropagator)" class="member-name-link">transformTo</a><wbr>(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="RelHintsPropagator.html" title="interface in org.apache.calcite.plan">RelHintsPropagator</a>&nbsp;handler)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Registers that a rule has produced an equivalent relational expression,
but no other equivalences.</div>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div>
</section>
</li>
</ul>
</section>
<section class="details">
<ul class="details-list">
<!-- ============ FIELD DETAIL =========== -->
<li>
<section class="field-details" id="field-detail">
<h2>Field Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="LOGGER">
<h3>LOGGER</h3>
<div class="member-signature"><span class="modifiers">protected static final</span>&nbsp;<span class="return-type">org.slf4j.Logger</span>&nbsp;<span class="element-name">LOGGER</span></div>
</section>
</li>
<li>
<section class="detail" id="id">
<h3>id</h3>
<div class="member-signature"><span class="modifiers">public final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">id</span></div>
</section>
</li>
<li>
<section class="detail" id="operand0">
<h3>operand0</h3>
<div class="member-signature"><span class="modifiers">protected final</span>&nbsp;<span class="return-type"><a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a></span>&nbsp;<span class="element-name">operand0</span></div>
</section>
</li>
<li>
<section class="detail" id="nodeInputs">
<h3>nodeInputs</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&gt;</span>&nbsp;<span class="element-name">nodeInputs</span></div>
</section>
</li>
<li>
<section class="detail" id="rule">
<h3>rule</h3>
<div class="member-signature"><span class="modifiers">public final</span>&nbsp;<span class="return-type"><a href="RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></span>&nbsp;<span class="element-name">rule</span></div>
</section>
</li>
<li>
<section class="detail" id="rels">
<h3>rels</h3>
<div class="member-signature"><span class="modifiers">public final</span>&nbsp;<span class="return-type"><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>[]</span>&nbsp;<span class="element-name">rels</span></div>
</section>
</li>
</ul>
</section>
</li>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<li>
<section class="constructor-details" id="constructor-detail">
<h2>Constructor Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="&lt;init&gt;(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.rel.RelNode[],java.util.Map,java.util.List)">
<h3>RelOptRuleCall</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="element-name">RelOptRuleCall</span><wbr><span class="parameters">(<a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a>&nbsp;planner,
<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>&nbsp;operand,
<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>[]&nbsp;rels,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&gt;&nbsp;nodeInputs,
@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;parents)</span></div>
<div class="block">Creates a RelOptRuleCall.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>planner</code> - Planner</dd>
<dd><code>operand</code> - Root operand</dd>
<dd><code>rels</code> - Array of relational expressions which matched each
operand</dd>
<dd><code>nodeInputs</code> - For each node which matched with
<code>matchAnyChildren</code>=true, a list of the node's
inputs</dd>
<dd><code>parents</code> - list of parent RelNodes corresponding to the first
relational expression in the array argument, if known;
otherwise, null</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="&lt;init&gt;(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.rel.RelNode[],java.util.Map)">
<h3>RelOptRuleCall</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="element-name">RelOptRuleCall</span><wbr><span class="parameters">(<a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a>&nbsp;planner,
<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>&nbsp;operand,
<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>[]&nbsp;rels,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&gt;&nbsp;nodeInputs)</span></div>
</section>
</li>
</ul>
</section>
</li>
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="getOperand0()">
<h3>getOperand0</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a></span>&nbsp;<span class="element-name">getOperand0</span>()</div>
<div class="block">Returns the root operand matched by this rule.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>root operand</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getRule()">
<h3>getRule</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></span>&nbsp;<span class="element-name">getRule</span>()</div>
<div class="block">Returns the invoked planner rule.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>planner rule</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getRels()">
<h3>getRels</h3>
<div class="member-signature"><span class="annotations"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Deprecated.html" title="class or interface in java.lang" class="external-link">@Deprecated</a>
</span><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>[]</span>&nbsp;<span class="element-name">getRels</span>()</div>
<div class="deprecation-block"><span class="deprecated-label">Deprecated.</span>
<div class="deprecation-comment">Use <a href="#getRelList()"><code>getRelList()</code></a> or <a href="#rel(int)"><code>rel(int)</code></a></div>
</div>
<div class="block">Returns a list of matched relational expressions.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>matched relational expressions</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getRelList()">
<h3>getRelList</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;</span>&nbsp;<span class="element-name">getRelList</span>()</div>
<div class="block">Returns a list of matched relational expressions.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>matched relational expressions</dd>
<dt>See Also:</dt>
<dd>
<ul class="see-list">
<li><a href="#rel(int)"><code>rel(int)</code></a></li>
</ul>
</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="rel(int)">
<h3>rel</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="type-parameters">&lt;T extends <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;</span>&nbsp;<span class="return-type">T</span>&nbsp;<span class="element-name">rel</span><wbr><span class="parameters">(int&nbsp;ordinal)</span></div>
<div class="block">Retrieves the <code>ordinal</code>th matched relational expression. This
corresponds to the <code>ordinal</code>th operand of the rule.</div>
<dl class="notes">
<dt>Type Parameters:</dt>
<dd><code>T</code> - Type</dd>
<dt>Parameters:</dt>
<dd><code>ordinal</code> - Ordinal</dd>
<dt>Returns:</dt>
<dd>Relational expression</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getChildRels(org.apache.calcite.rel.RelNode)">
<h3>getChildRels</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;</span>&nbsp;<span class="element-name">getChildRels</span><wbr><span class="parameters">(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</span></div>
<div class="block">Returns the children of a given relational expression node matched in a
rule.
<p>If the policy of the operand which caused the match is not
<a href="RelOptRuleOperandChildPolicy.html#ANY"><code>RelOptRuleOperandChildPolicy.ANY</code></a>,
the children will have their
own operands and therefore be easily available in the array returned by
the <a href="#getRelList()"><code>getRelList()</code></a> method, so this method returns null.
<p>This method is for
<a href="RelOptRuleOperandChildPolicy.html#ANY"><code>RelOptRuleOperandChildPolicy.ANY</code></a>,
which is generally used when a node can have a variable number of
children, and hence where the matched children are not retrievable by any
other means.
<p>Warning: it produces wrong result for <code>unordered(...)</code> case.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>rel</code> - Relational expression</dd>
<dt>Returns:</dt>
<dd>Children of relational expression</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="setChildRels(org.apache.calcite.rel.RelNode,java.util.List)">
<h3>setChildRels</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">setChildRels</span><wbr><span class="parameters">(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;inputs)</span></div>
<div class="block">Assigns the input relational expressions of a given relational expression,
as seen by this particular call. Is only called when the operand is
<a href="RelRule.OperandDetailBuilder.html#anyInputs()"><code>any</code></a>.</div>
</section>
</li>
<li>
<section class="detail" id="getPlanner()">
<h3>getPlanner</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a></span>&nbsp;<span class="element-name">getPlanner</span>()</div>
<div class="block">Returns the planner.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>planner</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="isRuleExcluded()">
<h3>isRuleExcluded</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">isRuleExcluded</span>()</div>
<div class="block">Determines whether the rule is excluded by any root node hint.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>true iff rule should be excluded</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getMetadataQuery()">
<h3>getMetadataQuery</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../rel/metadata/RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a></span>&nbsp;<span class="element-name">getMetadataQuery</span>()</div>
<div class="block">Returns the current RelMetadataQuery
to be used for instance by
<a href="RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)"><code>RelOptRule.onMatch(RelOptRuleCall)</code></a>.</div>
</section>
</li>
<li>
<section class="detail" id="getParents()">
<h3>getParents</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;</span>&nbsp;<span class="element-name">getParents</span>()</div>
<div class="block">Returns a list of parents of the first relational expression.</div>
</section>
</li>
<li>
<section class="detail" id="transformTo(org.apache.calcite.rel.RelNode,java.util.Map,org.apache.calcite.plan.RelHintsPropagator)">
<h3>transformTo</h3>
<div class="member-signature"><span class="modifiers">public abstract</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">transformTo</span><wbr><span class="parameters">(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,<wbr><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;equiv,
<a href="RelHintsPropagator.html" title="interface in org.apache.calcite.plan">RelHintsPropagator</a>&nbsp;handler)</span></div>
<div class="block">Registers that a rule has produced an equivalent relational expression.
<p>Called by the rule whenever it finds a match. The implementation of
this method guarantees that the original relational expression (that is,
<code>this.rels[0]</code>) has its traits propagated to the new
relational expression (<code>rel</code>) and its unregistered children.
Any trait not specifically set in the RelTraitSet returned by <code>
rel.getTraits()</code> will be copied from <code>
this.rels[0].getTraitSet()</code>.
<p>The hints of the root relational expression of
the rule call(<code>this.rels[0]</code>)
are copied to the new relational expression(<code>rel</code>)
with specified handler <code>handler</code>.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>rel</code> - Relational expression equivalent to the root relational
expression of the rule call, <code>call.rels(0)</code></dd>
<dd><code>equiv</code> - Map of other equivalences</dd>
<dd><code>handler</code> - Handler to customize the relational expression that registers
into the planner, the first parameter is the root relational expression
and the second parameter is the new relational expression</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="transformTo(org.apache.calcite.rel.RelNode,java.util.Map)">
<h3>transformTo</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">transformTo</span><wbr><span class="parameters">(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,<wbr><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;equiv)</span></div>
<div class="block">Registers that a rule has produced an equivalent relational expression,
with specified equivalences.
<p>The hints are copied with filter strategies from
the root relational expression of the rule call(<code>this.rels[0]</code>)
to the new relational expression(<code>rel</code>).</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>rel</code> - Relational expression equivalent to the root relational
expression of the rule call, <code>call.rels(0)</code></dd>
<dd><code>equiv</code> - Map of other equivalences</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="transformTo(org.apache.calcite.rel.RelNode)">
<h3>transformTo</h3>
<div class="member-signature"><span class="modifiers">public final</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">transformTo</span><wbr><span class="parameters">(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</span></div>
<div class="block">Registers that a rule has produced an equivalent relational expression,
but no other equivalences.
<p>The hints are copied with filter strategies from
the root relational expression of the rule call(<code>this.rels[0]</code>)
to the new relational expression(<code>rel</code>).</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>rel</code> - Relational expression equivalent to the root relational
expression of the rule call, <code>call.rels(0)</code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="transformTo(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelHintsPropagator)">
<h3>transformTo</h3>
<div class="member-signature"><span class="modifiers">public final</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">transformTo</span><wbr><span class="parameters">(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="RelHintsPropagator.html" title="interface in org.apache.calcite.plan">RelHintsPropagator</a>&nbsp;handler)</span></div>
<div class="block">Registers that a rule has produced an equivalent relational expression,
but no other equivalences.
<p>The hints of the root relational expression of
the rule call(<code>this.rels[0]</code>)
are copied to the new relational expression(<code>rel</code>)
with specified handler <code>handler</code>.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>rel</code> - Relational expression equivalent to the root relational
expression of the rule call, <code>call.rels(0)</code></dd>
<dd><code>handler</code> - Handler to customize the relational expression that registers
into the planner, the first parameter is the root relational expression
and the second parameter is the new relational expression</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="builder()">
<h3>builder</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../tools/RelBuilder.html" title="class in org.apache.calcite.tools">RelBuilder</a></span>&nbsp;<span class="element-name">builder</span>()</div>
<div class="block">Creates a <a href="../tools/RelBuilder.html" title="class in org.apache.calcite.tools"><code>RelBuilder</code></a> to be used by
code within the call. The <a href="RelOptRule.html#relBuilderFactory"><code>RelOptRule.relBuilderFactory</code></a> argument contains policies
such as what implementation of <a href="../rel/core/Filter.html" title="class in org.apache.calcite.rel.core"><code>Filter</code></a> to create.</div>
</section>
</li>
</ul>
</section>
</li>
</ul>
</section>
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