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<title>RexCall (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.rex</a></div>
<h1 title="Class RexCall" class="title">Class RexCall</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"><a href="RexNode.html" title="class in org.apache.calcite.rex">org.apache.calcite.rex.RexNode</a>
<div class="inheritance">org.apache.calcite.rex.RexCall</div>
</div>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="../rel/core/Match.RexMRAggCall.html" title="class in org.apache.calcite.rel.core">Match.RexMRAggCall</a></code>, <code><a href="RexOver.html" title="class in org.apache.calcite.rex">RexOver</a></code>, <code><a href="RexSubQuery.html" title="class in org.apache.calcite.rex">RexSubQuery</a></code>, <code><a href="../rel/core/Window.RexWinAggCall.html" title="class in org.apache.calcite.rel.core">Window.RexWinAggCall</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">RexCall</span>
<span class="extends-implements">extends <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></span></div>
<div class="block">An expression formed by a call to an operator with zero or more expressions
as operands.
<p>Operators may be binary, unary, functions, special syntactic constructs
like <code>CASE ... WHEN ... END</code>, or even internally generated
constructs like implicit type conversions. The syntax of the operator is
really irrelevant, because row-expressions (unlike
<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql"><code>SQL expressions</code></a>)
do not directly represent a piece of source code.
<p>It's not often necessary to sub-class this class. The smarts should be in
the operator, rather than the call. Any extra information about the call can
often be encoded as extra arguments. (These don't need to be hidden, because
no one is going to be generating source code from this tree.)</p></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>protected int</code></div>
<div class="col-second even-row-color"><code><a href="#hash" class="member-name-link">hash</a></code></div>
<div class="col-last even-row-color">
<div class="block">Cache of hash code.</div>
</div>
<div class="col-first odd-row-color"><code>final int</code></div>
<div class="col-second odd-row-color"><code><a href="#nodeCount" class="member-name-link">nodeCount</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
<div class="col-first even-row-color"><code>final <a href="../sql/SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a></code></div>
<div class="col-second even-row-color"><code><a href="#op" class="member-name-link">op</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>final com.google.common.collect.ImmutableList&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></div>
<div class="col-second odd-row-color"><code><a href="#operands" class="member-name-link">operands</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
<div class="col-first even-row-color"><code>final <a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second even-row-color"><code><a href="#type" class="member-name-link">type</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
</div>
<div class="inherited-list">
<h3 id="fields-inherited-from-class-org.apache.calcite.rex.RexNode">Fields inherited from class&nbsp;org.apache.calcite.rex.<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></h3>
<code><a href="RexNode.html#digest">digest</a></code></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.rel.type.RelDataType,org.apache.calcite.sql.SqlOperator,java.util.List)" class="member-name-link">RexCall</a><wbr>(<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
<a href="../sql/SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a>&nbsp;operator,
<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;? extends <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;operands)</code></div>
<div class="col-last even-row-color">&nbsp;</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-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></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>&lt;R,<wbr>
P&gt;&nbsp;R</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#accept(org.apache.calcite.rex.RexBiVisitor,P)" class="member-name-link">accept</a><wbr>(<a href="RexBiVisitor.html" title="interface in org.apache.calcite.rex">RexBiVisitor</a>&lt;R,<wbr>P&gt;&nbsp;visitor,
P&nbsp;arg)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Accepts a visitor with a payload, dispatching to the right overloaded
<a href="RexBiVisitor.html#visitInputRef(org.apache.calcite.rex.RexInputRef,P)"><code>RexBiVisitor.visitInputRef(RexInputRef, Object)</code></a> visitXxx} method.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>&lt;R&gt;&nbsp;R</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#accept(org.apache.calcite.rex.RexVisitor)" class="member-name-link">accept</a><wbr>(<a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;R&gt;&nbsp;visitor)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Accepts a visitor, dispatching to the right overloaded
<a href="RexVisitor.html#visitInputRef(org.apache.calcite.rex.RexInputRef)"><code>visitXxx</code></a> method.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>protected 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="#appendOperands(java.lang.StringBuilder)" class="member-name-link">appendOperands</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/StringBuilder.html" title="class or interface in java.lang" class="external-link">StringBuilder</a>&nbsp;sb)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Appends call operands without parenthesis.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="RexCall.html" title="class in org.apache.calcite.rex">RexCall</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#clone(org.apache.calcite.rel.type.RelDataType,java.util.List)" class="member-name-link">clone</a><wbr>(<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;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="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;operands)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a new call to the same operator with different operands.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>protected <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#computeDigest(boolean)" class="member-name-link">computeDigest</a><wbr>(boolean&nbsp;withType)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</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="#equals(java.lang.Object)" class="member-name-link">equals</a><wbr>(@Nullable <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>&nbsp;o)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"></div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../sql/SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getKind()" class="member-name-link">getKind</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 kind of node this is.</div>
</div>
<div class="col-first odd-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="RexNode.html" title="class in org.apache.calcite.rex">RexNode</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="#getOperands()" class="member-name-link">getOperands</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../sql/SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getOperator()" class="member-name-link">getOperator</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getType()" class="member-name-link">getType</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#hashCode()" class="member-name-link">hashCode</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"></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="#isAlwaysFalse()" class="member-name-link">isAlwaysFalse</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 whether this expression always returns false.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#isAlwaysTrue()" class="member-name-link">isAlwaysTrue</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 whether this expression always returns true.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#nodeCount()" class="member-name-link">nodeCount</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 number of nodes in this expression.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>final <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#toString()" class="member-name-link">toString</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.calcite.rex.RexNode">Methods inherited from class&nbsp;org.apache.calcite.rex.<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></h3>
<code><a href="RexNode.html#isA(java.util.Collection)">isA</a>, <a href="RexNode.html#isA(org.apache.calcite.sql.SqlKind)">isA</a></code></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#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#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#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="op">
<h3>op</h3>
<div class="member-signature"><span class="modifiers">public final</span>&nbsp;<span class="return-type"><a href="../sql/SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a></span>&nbsp;<span class="element-name">op</span></div>
</section>
</li>
<li>
<section class="detail" id="operands">
<h3>operands</h3>
<div class="member-signature"><span class="modifiers">public final</span>&nbsp;<span class="return-type">com.google.common.collect.ImmutableList&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</span>&nbsp;<span class="element-name">operands</span></div>
</section>
</li>
<li>
<section class="detail" id="type">
<h3>type</h3>
<div class="member-signature"><span class="modifiers">public final</span>&nbsp;<span class="return-type"><a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">type</span></div>
</section>
</li>
<li>
<section class="detail" id="nodeCount">
<h3>nodeCount</h3>
<div class="member-signature"><span class="modifiers">public final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">nodeCount</span></div>
</section>
</li>
<li>
<section class="detail" id="hash">
<h3>hash</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">hash</span></div>
<div class="block">Cache of hash code.</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.rel.type.RelDataType,org.apache.calcite.sql.SqlOperator,java.util.List)">
<h3>RexCall</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="element-name">RexCall</span><wbr><span class="parameters">(<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
<a href="../sql/SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a>&nbsp;operator,
<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;? extends <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;operands)</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="appendOperands(java.lang.StringBuilder)">
<h3>appendOperands</h3>
<div class="member-signature"><span class="modifiers">protected final</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">appendOperands</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/StringBuilder.html" title="class or interface in java.lang" class="external-link">StringBuilder</a>&nbsp;sb)</span></div>
<div class="block">Appends call operands without parenthesis.
<a href="RexLiteral.html" title="class in org.apache.calcite.rex"><code>RexLiteral</code></a> might omit data type depending on the context.
For instance, <code>null:BOOLEAN</code> vs <code>=(true, null)</code>.
The idea here is to omit "obvious" types for readability purposes while
still maintain <a href="../rel/RelNode.html#getDigest()"><code>RelNode.getDigest()</code></a> contract.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>sb</code> - destination</dd>
<dt>See Also:</dt>
<dd>
<ul class="see-list-long">
<li><a href="RexLiteral.html#computeDigest(org.apache.calcite.rex.RexDigestIncludeType)"><code>RexLiteral.computeDigest(RexDigestIncludeType)</code></a></li>
</ul>
</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="computeDigest(boolean)">
<h3>computeDigest</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/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span>&nbsp;<span class="element-name">computeDigest</span><wbr><span class="parameters">(boolean&nbsp;withType)</span></div>
</section>
</li>
<li>
<section class="detail" id="toString()">
<h3>toString</h3>
<div class="member-signature"><span class="modifiers">public final</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span>&nbsp;<span class="element-name">toString</span>()</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="RexNode.html#toString()">toString</a></code>&nbsp;in class&nbsp;<code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="accept(org.apache.calcite.rex.RexVisitor)">
<h3>accept</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="type-parameters">&lt;R&gt;</span>&nbsp;<span class="return-type">R</span>&nbsp;<span class="element-name">accept</span><wbr><span class="parameters">(<a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;R&gt;&nbsp;visitor)</span></div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><a href="RexNode.html#accept(org.apache.calcite.rex.RexVisitor)">RexNode</a></code></span></div>
<div class="block">Accepts a visitor, dispatching to the right overloaded
<a href="RexVisitor.html#visitInputRef(org.apache.calcite.rex.RexInputRef)"><code>visitXxx</code></a> method.
<p>Also see <a href="RexUtil.html#apply(org.apache.calcite.rex.RexVisitor,java.util.List,org.apache.calcite.rex.RexNode)"><code>RexUtil.apply(RexVisitor, java.util.List, RexNode)</code></a>,
which applies a visitor to several expressions simultaneously.</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="RexNode.html#accept(org.apache.calcite.rex.RexVisitor)">accept</a></code>&nbsp;in class&nbsp;<code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="accept(org.apache.calcite.rex.RexBiVisitor,P)">
<h3 id="accept(org.apache.calcite.rex.RexBiVisitor,java.lang.Object)">accept</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="type-parameters">&lt;R,<wbr>
P&gt;</span>&nbsp;<span class="return-type">R</span>&nbsp;<span class="element-name">accept</span><wbr><span class="parameters">(<a href="RexBiVisitor.html" title="interface in org.apache.calcite.rex">RexBiVisitor</a>&lt;R,<wbr>P&gt;&nbsp;visitor,
P&nbsp;arg)</span></div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><a href="RexNode.html#accept(org.apache.calcite.rex.RexBiVisitor,P)">RexNode</a></code></span></div>
<div class="block">Accepts a visitor with a payload, dispatching to the right overloaded
<a href="RexBiVisitor.html#visitInputRef(org.apache.calcite.rex.RexInputRef,P)"><code>RexBiVisitor.visitInputRef(RexInputRef, Object)</code></a> visitXxx} method.</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="RexNode.html#accept(org.apache.calcite.rex.RexBiVisitor,P)">accept</a></code>&nbsp;in class&nbsp;<code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getType()">
<h3>getType</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">getType</span>()</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="RexNode.html#getType()">getType</a></code>&nbsp;in class&nbsp;<code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="isAlwaysTrue()">
<h3>isAlwaysTrue</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">isAlwaysTrue</span>()</div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><a href="RexNode.html#isAlwaysTrue()">RexNode</a></code></span></div>
<div class="block">Returns whether this expression always returns true. (Such as if this
expression is equal to the literal <code>TRUE</code>.)</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="RexNode.html#isAlwaysTrue()">isAlwaysTrue</a></code>&nbsp;in class&nbsp;<code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="isAlwaysFalse()">
<h3>isAlwaysFalse</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">isAlwaysFalse</span>()</div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><a href="RexNode.html#isAlwaysFalse()">RexNode</a></code></span></div>
<div class="block">Returns whether this expression always returns false. (Such as if this
expression is equal to the literal <code>FALSE</code>.)</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="RexNode.html#isAlwaysFalse()">isAlwaysFalse</a></code>&nbsp;in class&nbsp;<code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getKind()">
<h3>getKind</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../sql/SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a></span>&nbsp;<span class="element-name">getKind</span>()</div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><a href="RexNode.html#getKind()">RexNode</a></code></span></div>
<div class="block">Returns the kind of node this is.</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="RexNode.html#getKind()">getKind</a></code>&nbsp;in class&nbsp;<code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd>
<dt>Returns:</dt>
<dd>Node kind, never null</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getOperands()">
<h3>getOperands</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="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</span>&nbsp;<span class="element-name">getOperands</span>()</div>
</section>
</li>
<li>
<section class="detail" id="getOperator()">
<h3>getOperator</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../sql/SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a></span>&nbsp;<span class="element-name">getOperator</span>()</div>
</section>
</li>
<li>
<section class="detail" id="nodeCount()">
<h3>nodeCount</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">nodeCount</span>()</div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><a href="RexNode.html#nodeCount()">RexNode</a></code></span></div>
<div class="block">Returns the number of nodes in this expression.
<p>Leaf nodes, such as <a href="RexInputRef.html" title="class in org.apache.calcite.rex"><code>RexInputRef</code></a> or <a href="RexLiteral.html" title="class in org.apache.calcite.rex"><code>RexLiteral</code></a>, have
a count of 1. Calls have a count of 1 plus the sum of their operands.
<p>Node count is a measure of expression complexity that is used by some
planner rules to prevent deeply nested expressions.</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="RexNode.html#nodeCount()">nodeCount</a></code>&nbsp;in class&nbsp;<code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="clone(org.apache.calcite.rel.type.RelDataType,java.util.List)">
<h3>clone</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="RexCall.html" title="class in org.apache.calcite.rex">RexCall</a></span>&nbsp;<span class="element-name">clone</span><wbr><span class="parameters">(<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;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="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;operands)</span></div>
<div class="block">Creates a new call to the same operator with different operands.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>type</code> - Return type</dd>
<dd><code>operands</code> - Operands to call</dd>
<dt>Returns:</dt>
<dd>New call</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="equals(java.lang.Object)">
<h3>equals</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">equals</span><wbr><span class="parameters">(@Nullable <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>&nbsp;o)</span></div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><a href="RexNode.html#equals(java.lang.Object)">RexNode</a></code></span></div>
<div class="block">
<p>Every node must implement <a href="RexNode.html#equals(java.lang.Object)"><code>RexNode.equals(java.lang.Object)</code></a> based on its content</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="RexNode.html#equals(java.lang.Object)">equals</a></code>&nbsp;in class&nbsp;<code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="hashCode()">
<h3>hashCode</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">hashCode</span>()</div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><a href="RexNode.html#hashCode()">RexNode</a></code></span></div>
<div class="block">
<p>Every node must implement <a href="RexNode.html#hashCode()"><code>RexNode.hashCode()</code></a> consistent with
<a href="RexNode.html#equals(java.lang.Object)"><code>RexNode.equals(java.lang.Object)</code></a></div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="RexNode.html#hashCode()">hashCode</a></code>&nbsp;in class&nbsp;<code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd>
</dl>
</section>
</li>
</ul>
</section>
</li>
</ul>
</section>
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