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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.piglet</a></div>
<h2 title="Class PigRelOpVisitor" class="title">Class PigRelOpVisitor</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>org.apache.pig.newplan.PlanVisitor</li>
<li>
<ul class="inheritance">
<li>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</li>
<li>
<ul class="inheritance">
<li><a href="PigRelOpWalker.PlanPreVisitor.html" title="class in org.apache.calcite.piglet">org.apache.calcite.piglet.PigRelOpWalker.PlanPreVisitor</a></li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.piglet.PigRelOpVisitor</li>
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<dd><code><a href="PigRelOpInnerVisitor.html" title="class in org.apache.calcite.piglet">PigRelOpInnerVisitor</a></code></dd>
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<hr>
<pre>class <span class="typeNameLabel">PigRelOpVisitor</span>
extends <a href="PigRelOpWalker.PlanPreVisitor.html" title="class in org.apache.calcite.piglet">PigRelOpWalker.PlanPreVisitor</a></pre>
<div class="block">Visits Pig logical operators and converts them into corresponding relational
algebra plans.</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>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="PigRelOpVisitor.GroupType.html" title="enum in org.apache.calcite.piglet">PigRelOpVisitor.GroupType</a></span></code></th>
<td class="colLast">
<div class="block">Type of Pig groups</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><code>protected <a href="PigRelBuilder.html" title="class in org.apache.calcite.piglet">PigRelBuilder</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#builder">builder</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private org.apache.pig.newplan.Operator</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#currentRoot">currentRoot</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>private static java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#RANK_PREFIX">RANK_PREFIX</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<h3>Fields inherited from class&nbsp;org.apache.pig.newplan.PlanVisitor</h3>
<code>currentWalker, DEFAULT_SCOPE, plan</code></li>
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<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.pig.newplan.OperatorPlan,org.apache.pig.newplan.PlanWalker,org.apache.calcite.piglet.PigRelBuilder)">PigRelOpVisitor</a></span>&#8203;(org.apache.pig.newplan.OperatorPlan&nbsp;plan,
org.apache.pig.newplan.PlanWalker&nbsp;walker,
<a href="PigRelBuilder.html" title="class in org.apache.calcite.piglet">PigRelBuilder</a>&nbsp;builder)</code></th>
<td class="colLast">
<div class="block">Creates a PigRelOpVisitor.</div>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></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="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#adjustCubeInput()">adjustCubeInput</a></span>()</code></th>
<td class="colLast">
<div class="block">Adjusts the rel input for Pig Cube operator.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>private <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#buildRankField(org.apache.pig.newplan.logical.relational.LORank)">buildRankField</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LORank&nbsp;loRank)</code></th>
<td class="colLast">
<div class="block">Builds a window function for <code>LORank</code>.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>(package private) org.apache.pig.newplan.Operator</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCurrentRoot()">getCurrentRoot</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>private java.util.List&lt;<a href="../rex/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="#getGroupRowOperands(java.util.List,boolean)">getGroupRowOperands</a></span>&#8203;(java.util.List&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;fieldRels,
boolean&nbsp;isCubeRollup)</code></th>
<td class="colLast">
<div class="block">Gets the operands for the ROW operator to construct the group column.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<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="#getGroupRowType(java.util.List,boolean)">getGroupRowType</a></span>&#8203;(java.util.List&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;groupFields,
boolean&nbsp;isCubeRollup)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>private static <a href="PigRelOpVisitor.GroupType.html" title="enum in org.apache.calcite.piglet">PigRelOpVisitor.GroupType</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getGroupType(org.apache.pig.newplan.logical.relational.LOCogroup)">getGroupType</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOCogroup&nbsp;pigGroup)</code></th>
<td class="colLast">
<div class="block">Checks the group type of a group.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>private static <a href="../rel/core/JoinRelType.html" title="enum in org.apache.calcite.rel.core">JoinRelType</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getJoinType(boolean,boolean)">getJoinType</a></span>&#8203;(boolean&nbsp;leftInner,
boolean&nbsp;rightInner)</code></th>
<td class="colLast">
<div class="block">Decides the join type from the inner types of both relation.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#joinInternal(org.apache.pig.impl.util.MultiMap,boolean%5B%5D)">joinInternal</a></span>&#8203;(org.apache.pig.impl.util.MultiMap&lt;java.lang.Integer,&#8203;org.apache.pig.newplan.logical.expression.LogicalExpressionPlan&gt;&nbsp;joinPlans,
boolean[]&nbsp;innerFlags)</code></th>
<td class="colLast">
<div class="block">Joins a list of relations (previously pushed into the builder).</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#preprocessCogroup(org.apache.pig.newplan.logical.relational.LOCogroup,boolean)">preprocessCogroup</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOCogroup&nbsp;loCogroup,
boolean&nbsp;isCubeRollup)</code></th>
<td class="colLast">
<div class="block">Projects out group key and the row for each relation</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#preVisit(org.apache.pig.newplan.logical.relational.LogicalRelationalOperator)">preVisit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LogicalRelationalOperator&nbsp;root)</code></th>
<td class="colLast">
<div class="block">Called before a node.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#processCube(org.apache.calcite.piglet.PigRelOpVisitor.GroupType,org.apache.pig.newplan.logical.relational.LOCogroup)">processCube</a></span>&#8203;(<a href="PigRelOpVisitor.GroupType.html" title="enum in org.apache.calcite.piglet">PigRelOpVisitor.GroupType</a>&nbsp;groupType,
org.apache.pig.newplan.logical.relational.LOCogroup&nbsp;loCogroup)</code></th>
<td class="colLast">
<div class="block">Processes a CUBE/ROLLUP group type.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#processRegularGroup(org.apache.pig.newplan.logical.relational.LOCogroup)">processRegularGroup</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOCogroup&nbsp;loCogroup)</code></th>
<td class="colLast">
<div class="block">Processes regular a group/group.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#projectGroup(int)">projectGroup</a></span>&#8203;(int&nbsp;groupCount)</code></th>
<td class="colLast">
<div class="block">Projects group key with 'group' alias so that upstream operator can refer to, along
with other aggregate columns.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>(package private) java.util.List&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#translate()">translate</a></span>()</code></th>
<td class="colLast">
<div class="block">Translates the given pig logical plan into a list of relational algebra plans.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOCogroup)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOCogroup&nbsp;loCogroup)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOCross)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOCross&nbsp;loCross)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOCube)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOCube&nbsp;cube)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LODistinct)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LODistinct&nbsp;loDistinct)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOFilter)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOFilter&nbsp;filter)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOForEach)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOForEach&nbsp;foreach)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOGenerate)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOGenerate&nbsp;gen)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOInnerLoad)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOInnerLoad&nbsp;load)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOJoin)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOJoin&nbsp;join)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i23" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOLimit)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOLimit&nbsp;loLimit)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOLoad)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOLoad&nbsp;load)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i25" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LONative)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LONative&nbsp;nativeMR)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i26" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LORank)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LORank&nbsp;loRank)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i27" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOSort)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOSort&nbsp;loSort)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i28" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOSplit)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOSplit&nbsp;loSplit)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i29" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOSplitOutput)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOSplitOutput&nbsp;loSplitOutput)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i30" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOStore)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOStore&nbsp;store)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i31" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOStream)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOStream&nbsp;loStream)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i32" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#visit(org.apache.pig.newplan.logical.relational.LOUnion)">visit</a></span>&#8203;(org.apache.pig.newplan.logical.relational.LOUnion&nbsp;loUnion)</code></th>
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<code>getPlan, popWalker, pushWalker, visit</code></li>
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<pre>private static final&nbsp;java.lang.String RANK_PREFIX</pre>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../constant-values.html#org.apache.calcite.piglet.PigRelOpVisitor.RANK_PREFIX">Constant Field Values</a></dd>
</dl>
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<pre>protected final&nbsp;<a href="PigRelBuilder.html" title="class in org.apache.calcite.piglet">PigRelBuilder</a> builder</pre>
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<pre>private&nbsp;org.apache.pig.newplan.Operator currentRoot</pre>
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<h4>PigRelOpVisitor</h4>
<pre>PigRelOpVisitor&#8203;(org.apache.pig.newplan.OperatorPlan&nbsp;plan,
org.apache.pig.newplan.PlanWalker&nbsp;walker,
<a href="PigRelBuilder.html" title="class in org.apache.calcite.piglet">PigRelBuilder</a>&nbsp;builder)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<div class="block">Creates a PigRelOpVisitor.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>plan</code> - Pig logical plan</dd>
<dd><code>walker</code> - The walker over Pig logical plan</dd>
<dd><code>builder</code> - Relational algebra builder</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code> - Exception during processing Pig operators</dd>
</dl>
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<pre class="methodSignature">org.apache.pig.newplan.Operator&nbsp;getCurrentRoot()</pre>
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<pre class="methodSignature">java.util.List&lt;<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;translate()
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<div class="block">Translates the given pig logical plan into a list of relational algebra plans.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The list of roots of translated plans, each corresponding to a sink
operator in the Pig plan</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code> - Exception during processing Pig operators</dd>
</dl>
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<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOLoad&nbsp;load)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
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<h4>visit</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOFilter&nbsp;filter)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
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<a id="visit(org.apache.pig.newplan.logical.relational.LOForEach)">
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<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOForEach&nbsp;foreach)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
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<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOCogroup&nbsp;loCogroup)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
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<pre class="methodSignature">private&nbsp;void&nbsp;projectGroup&#8203;(int&nbsp;groupCount)</pre>
<div class="block">Projects group key with 'group' alias so that upstream operator can refer to, along
with other aggregate columns. If group consists of multiple group keys, construct
a composite tuple/struct type to make it compatible with PIG group semantic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>groupCount</code> - Number of group keys.</dd>
</dl>
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<h4>processRegularGroup</h4>
<pre class="methodSignature">private&nbsp;void&nbsp;processRegularGroup&#8203;(org.apache.pig.newplan.logical.relational.LOCogroup&nbsp;loCogroup)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<div class="block">Processes regular a group/group.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>loCogroup</code> - Pig logical group operator</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code> - Exception during processing Pig operators</dd>
</dl>
</li>
</ul>
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<pre class="methodSignature">private&nbsp;void&nbsp;processCube&#8203;(<a href="PigRelOpVisitor.GroupType.html" title="enum in org.apache.calcite.piglet">PigRelOpVisitor.GroupType</a>&nbsp;groupType,
org.apache.pig.newplan.logical.relational.LOCogroup&nbsp;loCogroup)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<div class="block">Processes a CUBE/ROLLUP group type.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>groupType</code> - type of the group, either ROLLUP or CUBE</dd>
<dd><code>loCogroup</code> - Pig logical group operator</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code> - Exception during processing Pig operator</dd>
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<pre class="methodSignature">private&nbsp;void&nbsp;adjustCubeInput()</pre>
<div class="block">Adjusts the rel input for Pig Cube operator.</div>
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<pre class="methodSignature">private&nbsp;void&nbsp;preprocessCogroup&#8203;(org.apache.pig.newplan.logical.relational.LOCogroup&nbsp;loCogroup,
boolean&nbsp;isCubeRollup)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<div class="block">Projects out group key and the row for each relation</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>loCogroup</code> - Pig logical group operator</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code> - Exception during processing Pig operator</dd>
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<h4>getGroupRowType</h4>
<pre class="methodSignature">private&nbsp;<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;getGroupRowType&#8203;(java.util.List&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;groupFields,
boolean&nbsp;isCubeRollup)</pre>
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<h4>getGroupRowOperands</h4>
<pre class="methodSignature">private&nbsp;java.util.List&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;getGroupRowOperands&#8203;(java.util.List&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;fieldRels,
boolean&nbsp;isCubeRollup)</pre>
<div class="block">Gets the operands for the ROW operator to construct the group column.</div>
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<a id="getGroupType(org.apache.pig.newplan.logical.relational.LOCogroup)">
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<h4>getGroupType</h4>
<pre class="methodSignature">private static&nbsp;<a href="PigRelOpVisitor.GroupType.html" title="enum in org.apache.calcite.piglet">PigRelOpVisitor.GroupType</a>&nbsp;getGroupType&#8203;(org.apache.pig.newplan.logical.relational.LOCogroup&nbsp;pigGroup)</pre>
<div class="block">Checks the group type of a group.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pigGroup</code> - Pig logical group operator</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The group type, either CUBE, ROLLUP, or REGULAR</dd>
</dl>
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<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOLimit&nbsp;loLimit)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
</ul>
<a id="visit(org.apache.pig.newplan.logical.relational.LOSort)">
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<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOSort&nbsp;loSort)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
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</ul>
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<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOJoin&nbsp;join)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
</ul>
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<h4>visit</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOCross&nbsp;loCross)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
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</ul>
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<h4>joinInternal</h4>
<pre class="methodSignature">private&nbsp;void&nbsp;joinInternal&#8203;(org.apache.pig.impl.util.MultiMap&lt;java.lang.Integer,&#8203;org.apache.pig.newplan.logical.expression.LogicalExpressionPlan&gt;&nbsp;joinPlans,
boolean[]&nbsp;innerFlags)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<div class="block">Joins a list of relations (previously pushed into the builder).</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>joinPlans</code> - Join keys</dd>
<dd><code>innerFlags</code> - Join type</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code> - Exception during processing Pig operator</dd>
</dl>
</li>
</ul>
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<h4>getJoinType</h4>
<pre class="methodSignature">private static&nbsp;<a href="../rel/core/JoinRelType.html" title="enum in org.apache.calcite.rel.core">JoinRelType</a>&nbsp;getJoinType&#8203;(boolean&nbsp;leftInner,
boolean&nbsp;rightInner)</pre>
<div class="block">Decides the join type from the inner types of both relation.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>leftInner</code> - true if the left requires inner</dd>
<dd><code>rightInner</code> - true if the right requires inner</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The join type, either INNER, LEFT, RIGHT, or FULL</dd>
</dl>
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<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOUnion&nbsp;loUnion)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
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<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LODistinct&nbsp;loDistinct)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
</ul>
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<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOCube&nbsp;cube)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
</ul>
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<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOInnerLoad&nbsp;load)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
</ul>
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<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOSplit&nbsp;loSplit)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
</ul>
<a id="visit(org.apache.pig.newplan.logical.relational.LOSplitOutput)">
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<h4>visit</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOSplitOutput&nbsp;loSplitOutput)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
</ul>
<a id="visit(org.apache.pig.newplan.logical.relational.LOStore)">
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<h4>visit</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOStore&nbsp;store)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
</ul>
<a id="visit(org.apache.pig.newplan.logical.relational.LOGenerate)">
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<h4>visit</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOGenerate&nbsp;gen)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
</ul>
<a id="visit(org.apache.pig.newplan.logical.relational.LORank)">
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<h4>visit</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LORank&nbsp;loRank)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
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</ul>
<a id="buildRankField(org.apache.pig.newplan.logical.relational.LORank)">
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<h4>buildRankField</h4>
<pre class="methodSignature">private&nbsp;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;buildRankField&#8203;(org.apache.pig.newplan.logical.relational.LORank&nbsp;loRank)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<div class="block">Builds a window function for <code>LORank</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>loRank</code> - Pig logical rank operator</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The window function</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code> - Exception during processing Pig operator</dd>
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<h4>visit</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LOStream&nbsp;loStream)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
</ul>
<a id="visit(org.apache.pig.newplan.logical.relational.LONative)">
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<h4>visit</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;visit&#8203;(org.apache.pig.newplan.logical.relational.LONative&nbsp;nativeMR)
throws org.apache.pig.impl.logicalLayer.FrontendException</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>visit</code>&nbsp;in class&nbsp;<code>org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>org.apache.pig.impl.logicalLayer.FrontendException</code></dd>
</dl>
</li>
</ul>
<a id="preVisit(org.apache.pig.newplan.logical.relational.LogicalRelationalOperator)">
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<h4>preVisit</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;preVisit&#8203;(org.apache.pig.newplan.logical.relational.LogicalRelationalOperator&nbsp;root)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="PigRelOpWalker.PlanPreVisitor.html#preVisit(org.apache.pig.newplan.logical.relational.LogicalRelationalOperator)">PigRelOpWalker.PlanPreVisitor</a></code></span></div>
<div class="block">Called before a node.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="PigRelOpWalker.PlanPreVisitor.html#preVisit(org.apache.pig.newplan.logical.relational.LogicalRelationalOperator)">preVisit</a></code>&nbsp;in class&nbsp;<code><a href="PigRelOpWalker.PlanPreVisitor.html" title="class in org.apache.calcite.piglet">PigRelOpWalker.PlanPreVisitor</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>root</code> - Pig logical operator to check</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Returns whether the node has been visited before</dd>
</dl>
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