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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.rex</a></div>
<h2 title="Interface RexVisitor" class="title">Interface RexVisitor&lt;R&gt;</h2>
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<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>R</code> - Return type</dd>
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<dl>
<dt>All Known Implementing Classes:</dt>
<dd><code><a href="../rel/rules/ProjectCorrelateTransposeRule.RexFieldAccessReplacer.html" title="class in org.apache.calcite.rel.rules">ProjectCorrelateTransposeRule.RexFieldAccessReplacer</a></code>, <code><a href="../rel/rules/ReduceDecimalsRule.DecimalShuttle.html" title="class in org.apache.calcite.rel.rules">ReduceDecimalsRule.DecimalShuttle</a></code>, <code><a href="../rel/rules/ReduceExpressionsRule.CaseShuttle.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.CaseShuttle</a></code>, <code><a href="../rel/rules/ReduceExpressionsRule.ReducibleExprLocator.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.ReducibleExprLocator</a></code>, <code><a href="../rel/rules/ReduceExpressionsRule.RexReplacer.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.RexReplacer</a></code>, <code><a href="../plan/RelOptUtil.InputFinder.html" title="class in org.apache.calcite.plan">RelOptUtil.InputFinder</a></code>, <code><a href="../plan/RelOptUtil.InputReferencedVisitor.html" title="class in org.apache.calcite.plan">RelOptUtil.InputReferencedVisitor</a></code>, <code><a href="../plan/RelOptUtil.RexInputConverter.html" title="class in org.apache.calcite.plan">RelOptUtil.RexInputConverter</a></code>, <code><a href="../plan/RelOptUtil.VariableUsedVisitor.html" title="class in org.apache.calcite.plan">RelOptUtil.VariableUsedVisitor</a></code>, <code><a href="RexChecker.html" title="class in org.apache.calcite.rex">RexChecker</a></code>, <code><a href="RexInterpreter.html" title="class in org.apache.calcite.rex">RexInterpreter</a></code>, <code><a href="RexPermutationShuttle.html" title="class in org.apache.calcite.rex">RexPermutationShuttle</a></code>, <code><a href="RexPermuteInputsShuttle.html" title="class in org.apache.calcite.rex">RexPermuteInputsShuttle</a></code>, <code><a href="RexShuttle.html" title="class in org.apache.calcite.rex">RexShuttle</a></code>, <code><a href="../adapter/enumerable/RexToLixTranslator.html" title="class in org.apache.calcite.adapter.enumerable">RexToLixTranslator</a></code>, <code><a href="RexUtil.ExprSimplifier.html" title="class in org.apache.calcite.rex">RexUtil.ExprSimplifier</a></code>, <code><a href="RexUtil.FieldAccessFinder.html" title="class in org.apache.calcite.rex">RexUtil.FieldAccessFinder</a></code>, <code><a href="RexUtil.FixNullabilityShuttle.html" title="class in org.apache.calcite.rex">RexUtil.FixNullabilityShuttle</a></code>, <code><a href="RexUtil.SubQueryFinder.html" title="class in org.apache.calcite.rex">RexUtil.SubQueryFinder</a></code>, <code><a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a></code></dd>
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<pre>public interface <span class="typeNameLabel">RexVisitor&lt;R&gt;</span></pre>
<div class="block">Visitor pattern for traversing a tree of <a href="RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a> objects.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../util/Glossary.html#VISITOR_PATTERN"><code>Glossary.VISITOR_PATTERN</code></a>,
<a href="RexShuttle.html" title="class in org.apache.calcite.rex"><code>RexShuttle</code></a>,
<a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex"><code>RexVisitorImpl</code></a></dd>
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<table class="memberSummary">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t5" class="tableTab"><span><a href="javascript:show(16);">Default Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitCall(org.apache.calcite.rex.RexCall)">visitCall</a></span>&#8203;(<a href="RexCall.html" title="class in org.apache.calcite.rex">RexCall</a>&nbsp;call)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitCorrelVariable(org.apache.calcite.rex.RexCorrelVariable)">visitCorrelVariable</a></span>&#8203;(<a href="RexCorrelVariable.html" title="class in org.apache.calcite.rex">RexCorrelVariable</a>&nbsp;correlVariable)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitDynamicParam(org.apache.calcite.rex.RexDynamicParam)">visitDynamicParam</a></span>&#8203;(<a href="RexDynamicParam.html" title="class in org.apache.calcite.rex">RexDynamicParam</a>&nbsp;dynamicParam)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>default void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitEach(java.lang.Iterable)">visitEach</a></span>&#8203;(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a>&lt;? extends <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;exprs)</code></th>
<td class="colLast">
<div class="block">Visits a list of expressions.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitFieldAccess(org.apache.calcite.rex.RexFieldAccess)">visitFieldAccess</a></span>&#8203;(<a href="RexFieldAccess.html" title="class in org.apache.calcite.rex">RexFieldAccess</a>&nbsp;fieldAccess)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitInputRef(org.apache.calcite.rex.RexInputRef)">visitInputRef</a></span>&#8203;(<a href="RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&nbsp;inputRef)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>default <a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitList(java.lang.Iterable)">visitList</a></span>&#8203;(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a>&lt;? extends <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;exprs)</code></th>
<td class="colLast">
<div class="block">Visits a list and returns a list of the results.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>default void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitList(java.lang.Iterable,java.util.List)">visitList</a></span>&#8203;(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a>&lt;? extends <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;exprs,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&gt;&nbsp;out)</code></th>
<td class="colLast">
<div class="block">Visits a list and writes the results to another list.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitLiteral(org.apache.calcite.rex.RexLiteral)">visitLiteral</a></span>&#8203;(<a href="RexLiteral.html" title="class in org.apache.calcite.rex">RexLiteral</a>&nbsp;literal)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitLocalRef(org.apache.calcite.rex.RexLocalRef)">visitLocalRef</a></span>&#8203;(<a href="RexLocalRef.html" title="class in org.apache.calcite.rex">RexLocalRef</a>&nbsp;localRef)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitOver(org.apache.calcite.rex.RexOver)">visitOver</a></span>&#8203;(<a href="RexOver.html" title="class in org.apache.calcite.rex">RexOver</a>&nbsp;over)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitPatternFieldRef(org.apache.calcite.rex.RexPatternFieldRef)">visitPatternFieldRef</a></span>&#8203;(<a href="RexPatternFieldRef.html" title="class in org.apache.calcite.rex">RexPatternFieldRef</a>&nbsp;fieldRef)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitRangeRef(org.apache.calcite.rex.RexRangeRef)">visitRangeRef</a></span>&#8203;(<a href="RexRangeRef.html" title="class in org.apache.calcite.rex">RexRangeRef</a>&nbsp;rangeRef)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitSubQuery(org.apache.calcite.rex.RexSubQuery)">visitSubQuery</a></span>&#8203;(<a href="RexSubQuery.html" title="class in org.apache.calcite.rex">RexSubQuery</a>&nbsp;subQuery)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visitTableInputRef(org.apache.calcite.rex.RexTableInputRef)">visitTableInputRef</a></span>&#8203;(<a href="RexTableInputRef.html" title="class in org.apache.calcite.rex">RexTableInputRef</a>&nbsp;fieldRef)</code></th>
<td class="colLast">&nbsp;</td>
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<h3>Method Detail</h3>
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<h4>visitInputRef</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitInputRef&#8203;(<a href="RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&nbsp;inputRef)</pre>
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<a id="visitLocalRef(org.apache.calcite.rex.RexLocalRef)">
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<h4>visitLocalRef</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitLocalRef&#8203;(<a href="RexLocalRef.html" title="class in org.apache.calcite.rex">RexLocalRef</a>&nbsp;localRef)</pre>
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<a id="visitLiteral(org.apache.calcite.rex.RexLiteral)">
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<h4>visitLiteral</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitLiteral&#8203;(<a href="RexLiteral.html" title="class in org.apache.calcite.rex">RexLiteral</a>&nbsp;literal)</pre>
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<a id="visitCall(org.apache.calcite.rex.RexCall)">
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<h4>visitCall</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitCall&#8203;(<a href="RexCall.html" title="class in org.apache.calcite.rex">RexCall</a>&nbsp;call)</pre>
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<a id="visitOver(org.apache.calcite.rex.RexOver)">
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<h4>visitOver</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitOver&#8203;(<a href="RexOver.html" title="class in org.apache.calcite.rex">RexOver</a>&nbsp;over)</pre>
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<a id="visitCorrelVariable(org.apache.calcite.rex.RexCorrelVariable)">
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<h4>visitCorrelVariable</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitCorrelVariable&#8203;(<a href="RexCorrelVariable.html" title="class in org.apache.calcite.rex">RexCorrelVariable</a>&nbsp;correlVariable)</pre>
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<h4>visitDynamicParam</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitDynamicParam&#8203;(<a href="RexDynamicParam.html" title="class in org.apache.calcite.rex">RexDynamicParam</a>&nbsp;dynamicParam)</pre>
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<h4>visitRangeRef</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitRangeRef&#8203;(<a href="RexRangeRef.html" title="class in org.apache.calcite.rex">RexRangeRef</a>&nbsp;rangeRef)</pre>
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<h4>visitFieldAccess</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitFieldAccess&#8203;(<a href="RexFieldAccess.html" title="class in org.apache.calcite.rex">RexFieldAccess</a>&nbsp;fieldAccess)</pre>
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<h4>visitSubQuery</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitSubQuery&#8203;(<a href="RexSubQuery.html" title="class in org.apache.calcite.rex">RexSubQuery</a>&nbsp;subQuery)</pre>
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<h4>visitTableInputRef</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitTableInputRef&#8203;(<a href="RexTableInputRef.html" title="class in org.apache.calcite.rex">RexTableInputRef</a>&nbsp;fieldRef)</pre>
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<h4>visitPatternFieldRef</h4>
<pre class="methodSignature"><a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&nbsp;visitPatternFieldRef&#8203;(<a href="RexPatternFieldRef.html" title="class in org.apache.calcite.rex">RexPatternFieldRef</a>&nbsp;fieldRef)</pre>
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<h4>visitList</h4>
<pre class="methodSignature">default&nbsp;void&nbsp;visitList&#8203;(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a>&lt;? extends <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;exprs,
<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&gt;&nbsp;out)</pre>
<div class="block">Visits a list and writes the results to another list.</div>
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<h4>visitList</h4>
<pre class="methodSignature">default&nbsp;<a href="https://docs.oracle.com/javase/9/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util" class="externalLink">List</a>&lt;<a href="RexVisitor.html" title="type parameter in RexVisitor">R</a>&gt;&nbsp;visitList&#8203;(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a>&lt;? extends <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;exprs)</pre>
<div class="block">Visits a list and returns a list of the results.
The resulting list is immutable and does not contain nulls.</div>
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<h4>visitEach</h4>
<pre class="methodSignature">default&nbsp;void&nbsp;visitEach&#8203;(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a>&lt;? extends <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;exprs)</pre>
<div class="block">Visits a list of expressions.</div>
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