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<h2 title="Class RexUtil.ExpressionNormalizer" class="title">Class RexUtil.ExpressionNormalizer</h2>
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<li>java.lang.Object</li>
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<li><a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">org.apache.calcite.rex.RexVisitorImpl</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</li>
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<li>org.apache.calcite.rex.RexUtil.ExpressionNormalizer</li>
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<dd><code><a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
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<pre>private static class <span class="typeNameLabel">RexUtil.ExpressionNormalizer</span>
extends <a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</pre>
<div class="block">Walks over expressions and builds a bank of common sub-expressions.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="RexUtil.ExpressionNormalizer.SubExprExistsException.html" title="class in org.apache.calcite.rex">RexUtil.ExpressionNormalizer.SubExprExistsException</a></span></code></th>
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<div class="block">Thrown if there is a sub-expression.</div>
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<td class="colFirst"><code>(package private) boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#allowDups">allowDups</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>(package private) java.util.Map&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,&#8203;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#map">map</a></span></code></th>
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<h3>Fields inherited from class&nbsp;org.apache.calcite.rex.<a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a></h3>
<code><a href="RexVisitorImpl.html#deep">deep</a></code></li>
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<td class="colFirst"><code>protected </code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(boolean)">ExpressionNormalizer</a></span>&#8203;(boolean&nbsp;allowDups)</code></th>
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<td class="colFirst"><code>protected <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#lookup(org.apache.calcite.rex.RexNode)">lookup</a></span>&#8203;(<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;expr)</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#register(org.apache.calcite.rex.RexNode)">register</a></span>&#8203;(<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;expr)</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</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>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</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>
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<td class="colFirst"><code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</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>
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<td class="colFirst"><code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</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>
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<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</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>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</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>
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<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</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>
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<code><a href="RexVisitorImpl.html#visitArrayAnd(org.apache.calcite.rex.RexVisitor,java.util.List)">visitArrayAnd</a>, <a href="RexVisitorImpl.html#visitArrayOr(org.apache.calcite.rex.RexVisitor,java.util.List)">visitArrayOr</a>, <a href="RexVisitorImpl.html#visitLocalRef(org.apache.calcite.rex.RexLocalRef)">visitLocalRef</a>, <a href="RexVisitorImpl.html#visitOver(org.apache.calcite.rex.RexOver)">visitOver</a>, <a href="RexVisitorImpl.html#visitPatternFieldRef(org.apache.calcite.rex.RexPatternFieldRef)">visitPatternFieldRef</a>, <a href="RexVisitorImpl.html#visitSubQuery(org.apache.calcite.rex.RexSubQuery)">visitSubQuery</a>, <a href="RexVisitorImpl.html#visitTableInputRef(org.apache.calcite.rex.RexTableInputRef)">visitTableInputRef</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h4>map</h4>
<pre>final&nbsp;java.util.Map&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,&#8203;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt; map</pre>
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<h4>allowDups</h4>
<pre>final&nbsp;boolean allowDups</pre>
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<h4>ExpressionNormalizer</h4>
<pre>protected&nbsp;ExpressionNormalizer&#8203;(boolean&nbsp;allowDups)</pre>
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<a id="register(org.apache.calcite.rex.RexNode)">
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<h4>register</h4>
<pre class="methodSignature">protected&nbsp;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;register&#8203;(<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;expr)</pre>
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<a id="lookup(org.apache.calcite.rex.RexNode)">
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<h4>lookup</h4>
<pre class="methodSignature">protected&nbsp;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;lookup&#8203;(<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;expr)</pre>
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<pre class="methodSignature">public&nbsp;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;visitInputRef&#8203;(<a href="RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&nbsp;inputRef)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="RexVisitor.html#visitInputRef(org.apache.calcite.rex.RexInputRef)">visitInputRef</a></code>&nbsp;in interface&nbsp;<code><a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="RexVisitorImpl.html#visitInputRef(org.apache.calcite.rex.RexInputRef)">visitInputRef</a></code>&nbsp;in class&nbsp;<code><a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
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<a id="visitLiteral(org.apache.calcite.rex.RexLiteral)">
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<h4>visitLiteral</h4>
<pre class="methodSignature">public&nbsp;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;visitLiteral&#8203;(<a href="RexLiteral.html" title="class in org.apache.calcite.rex">RexLiteral</a>&nbsp;literal)</pre>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="RexVisitor.html#visitLiteral(org.apache.calcite.rex.RexLiteral)">visitLiteral</a></code>&nbsp;in interface&nbsp;<code><a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="RexVisitorImpl.html#visitLiteral(org.apache.calcite.rex.RexLiteral)">visitLiteral</a></code>&nbsp;in class&nbsp;<code><a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
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<h4>visitCorrelVariable</h4>
<pre class="methodSignature">public&nbsp;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;visitCorrelVariable&#8203;(<a href="RexCorrelVariable.html" title="class in org.apache.calcite.rex">RexCorrelVariable</a>&nbsp;correlVariable)</pre>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="RexVisitor.html#visitCorrelVariable(org.apache.calcite.rex.RexCorrelVariable)">visitCorrelVariable</a></code>&nbsp;in interface&nbsp;<code><a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="RexVisitorImpl.html#visitCorrelVariable(org.apache.calcite.rex.RexCorrelVariable)">visitCorrelVariable</a></code>&nbsp;in class&nbsp;<code><a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
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<a id="visitCall(org.apache.calcite.rex.RexCall)">
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<h4>visitCall</h4>
<pre class="methodSignature">public&nbsp;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;visitCall&#8203;(<a href="RexCall.html" title="class in org.apache.calcite.rex">RexCall</a>&nbsp;call)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="RexVisitor.html#visitCall(org.apache.calcite.rex.RexCall)">visitCall</a></code>&nbsp;in interface&nbsp;<code><a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="RexVisitorImpl.html#visitCall(org.apache.calcite.rex.RexCall)">visitCall</a></code>&nbsp;in class&nbsp;<code><a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
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<a id="visitDynamicParam(org.apache.calcite.rex.RexDynamicParam)">
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<h4>visitDynamicParam</h4>
<pre class="methodSignature">public&nbsp;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;visitDynamicParam&#8203;(<a href="RexDynamicParam.html" title="class in org.apache.calcite.rex">RexDynamicParam</a>&nbsp;dynamicParam)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="RexVisitor.html#visitDynamicParam(org.apache.calcite.rex.RexDynamicParam)">visitDynamicParam</a></code>&nbsp;in interface&nbsp;<code><a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="RexVisitorImpl.html#visitDynamicParam(org.apache.calcite.rex.RexDynamicParam)">visitDynamicParam</a></code>&nbsp;in class&nbsp;<code><a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
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<a id="visitRangeRef(org.apache.calcite.rex.RexRangeRef)">
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<h4>visitRangeRef</h4>
<pre class="methodSignature">public&nbsp;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;visitRangeRef&#8203;(<a href="RexRangeRef.html" title="class in org.apache.calcite.rex">RexRangeRef</a>&nbsp;rangeRef)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="RexVisitor.html#visitRangeRef(org.apache.calcite.rex.RexRangeRef)">visitRangeRef</a></code>&nbsp;in interface&nbsp;<code><a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="RexVisitorImpl.html#visitRangeRef(org.apache.calcite.rex.RexRangeRef)">visitRangeRef</a></code>&nbsp;in class&nbsp;<code><a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
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<h4>visitFieldAccess</h4>
<pre class="methodSignature">public&nbsp;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;visitFieldAccess&#8203;(<a href="RexFieldAccess.html" title="class in org.apache.calcite.rex">RexFieldAccess</a>&nbsp;fieldAccess)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="RexVisitor.html#visitFieldAccess(org.apache.calcite.rex.RexFieldAccess)">visitFieldAccess</a></code>&nbsp;in interface&nbsp;<code><a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="RexVisitorImpl.html#visitFieldAccess(org.apache.calcite.rex.RexFieldAccess)">visitFieldAccess</a></code>&nbsp;in class&nbsp;<code><a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a>&lt;<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></dd>
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