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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="Class RexUtil.ForwardRefFinder" class="title">Class RexUtil.ForwardRefFinder</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<ul class="inheritance">
<li><a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">org.apache.calcite.rex.RexVisitorImpl</a>&lt;java.lang.Void&gt;</li>
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<li>org.apache.calcite.rex.RexUtil.ForwardRefFinder</li>
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<dd><code><a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;java.lang.Void&gt;</code></dd>
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<pre>private static class <span class="typeNameLabel">RexUtil.ForwardRefFinder</span>
extends <a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a>&lt;java.lang.Void&gt;</pre>
<div class="block">Walks over an expression and throws an exception if it finds an
<a href="RexInputRef.html" title="class in org.apache.calcite.rex"><code>RexInputRef</code></a> with an ordinal beyond the number of fields in the
input row type, or a <a href="RexLocalRef.html" title="class in org.apache.calcite.rex"><code>RexLocalRef</code></a> with ordinal greater than that set
using <a href="#setLimit(int)"><code>setLimit(int)</code></a>.</div>
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<td class="colFirst"><code>(package private) static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="RexUtil.ForwardRefFinder.IllegalForwardRefException.html" title="class in org.apache.calcite.rex">RexUtil.ForwardRefFinder.IllegalForwardRefException</a></span></code></th>
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<div class="block">Thrown to abort a visit when we find an illegal forward reference.</div>
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<td class="colFirst"><code>private <a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#inputRowType">inputRowType</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>private int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#limit">limit</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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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.rel.type.RelDataType)">ForwardRefFinder</a></span>&#8203;(<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;inputRowType)</code></th>
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<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setLimit(int)">setLimit</a></span>&#8203;(int&nbsp;limit)</code></th>
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<td class="colFirst"><code>java.lang.Void</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>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>java.lang.Void</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;inputRef)</code></th>
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<h3>Methods 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#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#visitCall(org.apache.calcite.rex.RexCall)">visitCall</a>, <a href="RexVisitorImpl.html#visitCorrelVariable(org.apache.calcite.rex.RexCorrelVariable)">visitCorrelVariable</a>, <a href="RexVisitorImpl.html#visitDynamicParam(org.apache.calcite.rex.RexDynamicParam)">visitDynamicParam</a>, <a href="RexVisitorImpl.html#visitFieldAccess(org.apache.calcite.rex.RexFieldAccess)">visitFieldAccess</a>, <a href="RexVisitorImpl.html#visitLiteral(org.apache.calcite.rex.RexLiteral)">visitLiteral</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#visitRangeRef(org.apache.calcite.rex.RexRangeRef)">visitRangeRef</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>limit</h4>
<pre>private&nbsp;int limit</pre>
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<h4>inputRowType</h4>
<pre>private final&nbsp;<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> inputRowType</pre>
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<h4>ForwardRefFinder</h4>
<pre>ForwardRefFinder&#8203;(<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;inputRowType)</pre>
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<pre class="methodSignature">public&nbsp;java.lang.Void&nbsp;visitInputRef&#8203;(<a href="RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&nbsp;inputRef)</pre>
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<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;java.lang.Void&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;java.lang.Void&gt;</code></dd>
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<pre class="methodSignature">public&nbsp;java.lang.Void&nbsp;visitLocalRef&#8203;(<a href="RexLocalRef.html" title="class in org.apache.calcite.rex">RexLocalRef</a>&nbsp;inputRef)</pre>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="RexVisitor.html#visitLocalRef(org.apache.calcite.rex.RexLocalRef)">visitLocalRef</a></code>&nbsp;in interface&nbsp;<code><a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a>&lt;java.lang.Void&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="RexVisitorImpl.html#visitLocalRef(org.apache.calcite.rex.RexLocalRef)">visitLocalRef</a></code>&nbsp;in class&nbsp;<code><a href="RexVisitorImpl.html" title="class in org.apache.calcite.rex">RexVisitorImpl</a>&lt;java.lang.Void&gt;</code></dd>
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<h4>setLimit</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;setLimit&#8203;(int&nbsp;limit)</pre>
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