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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.plan</a></div>
<h2 title="Class RelOptPredicateList" class="title">Class RelOptPredicateList</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
<li>
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<li>org.apache.calcite.plan.RelOptPredicateList</li>
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<pre>public class <span class="typeNameLabel">RelOptPredicateList</span>
extends java.lang.Object</pre>
<div class="block">Predicates that are known to hold in the output of a particular relational
expression.
<p><b>Pulled up predicates</b> (field <a href="#pulledUpPredicates"><code>pulledUpPredicates</code></a> are
predicates that apply to every row output by the relational expression. They
are inferred from the input relational expression(s) and the relational
operator.
<p>For example, if you apply <code>Filter(x &gt; 1)</code> to a relational
expression that has a predicate <code>y &lt; 10</code> then the pulled up predicates
for the Filter are <code>[y &lt; 10, x &gt; 1]</code>.
<p><b>Inferred predicates</b> only apply to joins. If there there is a
predicate on the left input to a join, and that predicate is over columns
used in the join condition, then a predicate can be inferred on the right
input to the join. (And vice versa.)
<p>For example, in the query
<blockquote>SELECT *<br>
FROM emp<br>
JOIN dept ON emp.deptno = dept.deptno
WHERE emp.gender = 'F' AND emp.deptno &lt; 10</blockquote>
we have
<ul>
<li>left: <code>Filter(Scan(EMP), deptno &lt; 10</code>,
predicates: <code>[deptno &lt; 10]</code>
<li>right: <code>Scan(DEPT)</code>, predicates: <code>[]</code>
<li>join: <code>Join(left, right, emp.deptno = dept.deptno</code>,
leftInferredPredicates: [],
rightInferredPredicates: [deptno &lt; 10],
pulledUpPredicates: [emp.gender = 'F', emp.deptno &lt; 10,
emp.deptno = dept.deptno, dept.deptno &lt; 10]
</ul>
<p>Note that the predicate from the left input appears in
<code>rightInferredPredicates</code>. Predicates from several sources appear in
<code>pulledUpPredicates</code>.</div>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>com.google.common.collect.ImmutableMap&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,&#8203;<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="#constantMap">constantMap</a></span></code></th>
<td class="colLast">
<div class="block">A map of each (e, constant) pair that occurs within
<a href="#pulledUpPredicates"><code>pulledUpPredicates</code></a>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#EMPTY">EMPTY</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static com.google.common.collect.ImmutableList&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="#EMPTY_LIST">EMPTY_LIST</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>com.google.common.collect.ImmutableList&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="#leftInferredPredicates">leftInferredPredicates</a></span></code></th>
<td class="colLast">
<div class="block">Predicates that were inferred from the right input.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>com.google.common.collect.ImmutableList&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="#pulledUpPredicates">pulledUpPredicates</a></span></code></th>
<td class="colLast">
<div class="block">Predicates that can be pulled up from the relational expression and its
inputs.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>com.google.common.collect.ImmutableList&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="#rightInferredPredicates">rightInferredPredicates</a></span></code></th>
<td class="colLast">
<div class="block">Predicates that were inferred from the left input.</div>
</td>
</tr>
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<td class="colFirst"><code>private </code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(com.google.common.collect.ImmutableList,com.google.common.collect.ImmutableList,com.google.common.collect.ImmutableList,com.google.common.collect.ImmutableMap)">RelOptPredicateList</a></span>&#8203;(com.google.common.collect.ImmutableList&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;pulledUpPredicates,
com.google.common.collect.ImmutableList&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;leftInferredPredicates,
com.google.common.collect.ImmutableList&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;rightInferredPredicates,
com.google.common.collect.ImmutableMap&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,&#8203;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;constantMap)</code></th>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
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<td class="colFirst"><code>private static &lt;E&gt;&nbsp;com.google.common.collect.ImmutableList&lt;E&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#concat(com.google.common.collect.ImmutableList,com.google.common.collect.ImmutableList)">concat</a></span>&#8203;(com.google.common.collect.ImmutableList&lt;E&gt;&nbsp;list1,
com.google.common.collect.ImmutableList&lt;E&gt;&nbsp;list2)</code></th>
<td class="colLast">
<div class="block">Concatenates two immutable lists, avoiding a copy it possible.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of(org.apache.calcite.rex.RexBuilder,java.lang.Iterable)">of</a></span>&#8203;(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
java.lang.Iterable&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;pulledUpPredicates)</code></th>
<td class="colLast">
<div class="block">Creates a RelOptPredicateList with only pulled-up predicates, no inferred
predicates.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static <a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of(org.apache.calcite.rex.RexBuilder,java.lang.Iterable,java.lang.Iterable,java.lang.Iterable)">of</a></span>&#8203;(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
java.lang.Iterable&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;pulledUpPredicates,
java.lang.Iterable&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;leftInferredPredicates,
java.lang.Iterable&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;rightInferredPredicates)</code></th>
<td class="colLast">
<div class="block">Creates a RelOptPredicateList for a join.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#shift(org.apache.calcite.rex.RexBuilder,int)">shift</a></span>&#8203;(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
int&nbsp;offset)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#union(org.apache.calcite.rex.RexBuilder,org.apache.calcite.plan.RelOptPredicateList)">union</a></span>&#8203;(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
<a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;list)</code></th>
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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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<pre>private static final&nbsp;com.google.common.collect.ImmutableList&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt; EMPTY_LIST</pre>
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<pre>public static final&nbsp;<a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> EMPTY</pre>
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<h4>pulledUpPredicates</h4>
<pre>public final&nbsp;com.google.common.collect.ImmutableList&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt; pulledUpPredicates</pre>
<div class="block">Predicates that can be pulled up from the relational expression and its
inputs.</div>
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<h4>leftInferredPredicates</h4>
<pre>public final&nbsp;com.google.common.collect.ImmutableList&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt; leftInferredPredicates</pre>
<div class="block">Predicates that were inferred from the right input.
Empty if the relational expression is not a join.</div>
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<h4>rightInferredPredicates</h4>
<pre>public final&nbsp;com.google.common.collect.ImmutableList&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt; rightInferredPredicates</pre>
<div class="block">Predicates that were inferred from the left input.
Empty if the relational expression is not a join.</div>
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<h4>constantMap</h4>
<pre>public final&nbsp;com.google.common.collect.ImmutableMap&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,&#8203;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt; constantMap</pre>
<div class="block">A map of each (e, constant) pair that occurs within
<a href="#pulledUpPredicates"><code>pulledUpPredicates</code></a>.</div>
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<h4>RelOptPredicateList</h4>
<pre>private&nbsp;RelOptPredicateList&#8203;(com.google.common.collect.ImmutableList&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;pulledUpPredicates,
com.google.common.collect.ImmutableList&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;leftInferredPredicates,
com.google.common.collect.ImmutableList&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;rightInferredPredicates,
com.google.common.collect.ImmutableMap&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,&#8203;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;constantMap)</pre>
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<h4>of</h4>
<pre class="methodSignature">public static&nbsp;<a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;of&#8203;(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
java.lang.Iterable&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;pulledUpPredicates)</pre>
<div class="block">Creates a RelOptPredicateList with only pulled-up predicates, no inferred
predicates.
<p>Use this for relational expressions other than joins.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pulledUpPredicates</code> - Predicates that apply to the rows returned by the
relational expression</dd>
</dl>
</li>
</ul>
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<h4>of</h4>
<pre class="methodSignature">public static&nbsp;<a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;of&#8203;(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
java.lang.Iterable&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;pulledUpPredicates,
java.lang.Iterable&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;leftInferredPredicates,
java.lang.Iterable&lt;<a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;rightInferredPredicates)</pre>
<div class="block">Creates a RelOptPredicateList for a join.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rexBuilder</code> - Rex builder</dd>
<dd><code>pulledUpPredicates</code> - Predicates that apply to the rows returned by the
relational expression</dd>
<dd><code>leftInferredPredicates</code> - Predicates that were inferred from the right
input</dd>
<dd><code>rightInferredPredicates</code> - Predicates that were inferred from the left
input</dd>
</dl>
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<h4>union</h4>
<pre class="methodSignature">public&nbsp;<a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;union&#8203;(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
<a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;list)</pre>
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<pre class="methodSignature">private static&nbsp;&lt;E&gt;&nbsp;com.google.common.collect.ImmutableList&lt;E&gt;&nbsp;concat&#8203;(com.google.common.collect.ImmutableList&lt;E&gt;&nbsp;list1,
com.google.common.collect.ImmutableList&lt;E&gt;&nbsp;list2)</pre>
<div class="block">Concatenates two immutable lists, avoiding a copy it possible.</div>
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<pre class="methodSignature">public&nbsp;<a href="RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;shift&#8203;(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
int&nbsp;offset)</pre>
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