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<div class="subTitle">org.apache.drill.exec.store.jdbc</div>
<h2 title="Class JdbcPrel" class="title">Class JdbcPrel</h2>
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<ul class="inheritance">
<li>org.apache.calcite.rel.AbstractRelNode</li>
<li>
<ul class="inheritance">
<li>org.apache.drill.exec.store.jdbc.JdbcPrel</li>
</ul>
</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Cloneable.html?is-external=true" title="class or interface in java.lang">Cloneable</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a>&gt;, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.RelNode, <a href="../../../../../../org/apache/drill/exec/planner/common/DrillRelNode.html" title="interface in org.apache.drill.exec.planner.common">DrillRelNode</a>, <a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a></dd>
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<br>
<pre>public class <span class="typeNameLabel">JdbcPrel</span>
extends org.apache.calcite.rel.AbstractRelNode
implements <a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a></pre>
<div class="block">Represents a JDBC Plan once the children nodes have been rewritten into SQL.</div>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.calcite.rel.RelNode</h3>
<code>org.apache.calcite.rel.RelNode.Context</code></li>
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<h3>Fields inherited from class&nbsp;org.apache.calcite.rel.AbstractRelNode</h3>
<code>digest, id, rowType, traitSet</code></li>
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<h3>Fields inherited from interface&nbsp;org.apache.drill.exec.planner.physical.<a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html#DRILL_PHYSICAL">DRILL_PHYSICAL</a></code></li>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/store/jdbc/JdbcPrel.html#JdbcPrel-org.apache.calcite.plan.RelOptCluster-org.apache.calcite.plan.RelTraitSet-org.apache.drill.exec.store.jdbc.JdbcIntermediatePrel-">JdbcPrel</a></span>(org.apache.calcite.plan.RelOptCluster&nbsp;cluster,
org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
<a href="../../../../../../org/apache/drill/exec/store/jdbc/JdbcIntermediatePrel.html" title="class in org.apache.drill.exec.store.jdbc">JdbcIntermediatePrel</a>&nbsp;prel)</code>&nbsp;</td>
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<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="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="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>&lt;T,X,E extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a>&gt;<br>T</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/store/jdbc/JdbcPrel.html#accept-org.apache.drill.exec.planner.physical.visitor.PrelVisitor-X-">accept</a></span>(<a href="../../../../../../org/apache/drill/exec/planner/physical/visitor/PrelVisitor.html" title="interface in org.apache.drill.exec.planner.physical.visitor">PrelVisitor</a>&lt;T,X,E&gt;&nbsp;logicalVisitor,
X&nbsp;value)</code>&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/store/jdbc/JdbcPrel.html#estimateRowCount-org.apache.calcite.rel.metadata.RelMetadataQuery-">estimateRowCount</a></span>(org.apache.calcite.rel.metadata.RelMetadataQuery&nbsp;mq)</code>&nbsp;</td>
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<td class="colFirst"><code>org.apache.calcite.rel.RelWriter</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/store/jdbc/JdbcPrel.html#explainTerms-org.apache.calcite.rel.RelWriter-">explainTerms</a></span>(org.apache.calcite.rel.RelWriter&nbsp;pw)</code>&nbsp;</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/drill/exec/record/BatchSchema.SelectionVectorMode.html" title="enum in org.apache.drill.exec.record">BatchSchema.SelectionVectorMode</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/store/jdbc/JdbcPrel.html#getEncoding--">getEncoding</a></span>()</code>
<div class="block">A Prel's own SelectionVector mode - i.e whether it generates an SV2, SV4 or None</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html" title="interface in org.apache.drill.exec.physical.base">PhysicalOperator</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/store/jdbc/JdbcPrel.html#getPhysicalOperator-org.apache.drill.exec.planner.physical.PhysicalPlanCreator-">getPhysicalOperator</a></span>(<a href="../../../../../../org/apache/drill/exec/planner/physical/PhysicalPlanCreator.html" title="class in org.apache.drill.exec.planner.physical">PhysicalPlanCreator</a>&nbsp;creator)</code>&nbsp;</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/drill/exec/record/BatchSchema.SelectionVectorMode.html" title="enum in org.apache.drill.exec.record">BatchSchema.SelectionVectorMode</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/store/jdbc/JdbcPrel.html#getSupportedEncodings--">getSupportedEncodings</a></span>()</code>
<div class="block">Supported 'encodings' of a Prel indicates what are the acceptable modes of SelectionVector
of its child Prel</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/store/jdbc/JdbcPrel.html#iterator--">iterator</a></span>()</code>&nbsp;</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/drill/exec/store/jdbc/JdbcPrel.html#needsFinalColumnReordering--">needsFinalColumnReordering</a></span>()</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.rel.AbstractRelNode</h3>
<code>accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, computeSelfCost, copy, deriveRowType, equals, explain, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraitSet, getVariablesSet, getVariablesStopped, hashCode, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, replaceInput, sole, toString</code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h3>Methods inherited from interface&nbsp;org.apache.drill.exec.planner.physical.<a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a></h3>
<code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html#prepareForLateralUnnestPipeline-java.util.List-">prepareForLateralUnnestPipeline</a></code></li>
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<h3>Methods inherited from interface&nbsp;org.apache.calcite.rel.RelNode</h3>
<code>accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, computeSelfCost, copy, explain, getChildExps, getCollationList, getConvention, getCorrelVariable, getExpectedInputRowType, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTable, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, replaceInput</code></li>
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<h3>Methods inherited from interface&nbsp;org.apache.calcite.plan.RelOptNode</h3>
<code>getCluster, getDescription, getDigest, getId, getTraitSet</code></li>
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<h3>Methods inherited from interface&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#forEach-java.util.function.Consumer-" title="class or interface in java.lang">forEach</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#spliterator--" title="class or interface in java.lang">spliterator</a></code></li>
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<h3>Constructor Detail</h3>
<a name="JdbcPrel-org.apache.calcite.plan.RelOptCluster-org.apache.calcite.plan.RelTraitSet-org.apache.drill.exec.store.jdbc.JdbcIntermediatePrel-">
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<h4>JdbcPrel</h4>
<pre>public&nbsp;JdbcPrel(org.apache.calcite.plan.RelOptCluster&nbsp;cluster,
org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
<a href="../../../../../../org/apache/drill/exec/store/jdbc/JdbcIntermediatePrel.html" title="class in org.apache.drill.exec.store.jdbc">JdbcIntermediatePrel</a>&nbsp;prel)</pre>
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<h4>getPhysicalOperator</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/drill/exec/physical/base/PhysicalOperator.html" title="interface in org.apache.drill.exec.physical.base">PhysicalOperator</a>&nbsp;getPhysicalOperator(<a href="../../../../../../org/apache/drill/exec/planner/physical/PhysicalPlanCreator.html" title="class in org.apache.drill.exec.planner.physical">PhysicalPlanCreator</a>&nbsp;creator)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html#getPhysicalOperator-org.apache.drill.exec.planner.physical.PhysicalPlanCreator-">getPhysicalOperator</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a></code></dd>
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<h4>explainTerms</h4>
<pre>public&nbsp;org.apache.calcite.rel.RelWriter&nbsp;explainTerms(org.apache.calcite.rel.RelWriter&nbsp;pw)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>explainTerms</code>&nbsp;in class&nbsp;<code>org.apache.calcite.rel.AbstractRelNode</code></dd>
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<a name="estimateRowCount-org.apache.calcite.rel.metadata.RelMetadataQuery-">
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<h4>estimateRowCount</h4>
<pre>public&nbsp;double&nbsp;estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery&nbsp;mq)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>estimateRowCount</code>&nbsp;in interface&nbsp;<code>org.apache.calcite.rel.RelNode</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>estimateRowCount</code>&nbsp;in class&nbsp;<code>org.apache.calcite.rel.AbstractRelNode</code></dd>
</dl>
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<h4>iterator</h4>
<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a>&gt;&nbsp;iterator()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#iterator--" title="class or interface in java.lang">iterator</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a>&gt;</code></dd>
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<a name="accept-org.apache.drill.exec.planner.physical.visitor.PrelVisitor-java.lang.Object-">
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<h4>accept</h4>
<pre>public&nbsp;&lt;T,X,E extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a>&gt;&nbsp;T&nbsp;accept(<a href="../../../../../../org/apache/drill/exec/planner/physical/visitor/PrelVisitor.html" title="interface in org.apache.drill.exec.planner.physical.visitor">PrelVisitor</a>&lt;T,X,E&gt;&nbsp;logicalVisitor,
X&nbsp;value)
throws E extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html#accept-org.apache.drill.exec.planner.physical.visitor.PrelVisitor-X-">accept</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a></code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>E extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a></code></dd>
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<h4>getSupportedEncodings</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/drill/exec/record/BatchSchema.SelectionVectorMode.html" title="enum in org.apache.drill.exec.record">BatchSchema.SelectionVectorMode</a>[]&nbsp;getSupportedEncodings()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html#getSupportedEncodings--">Prel</a></code></span></div>
<div class="block">Supported 'encodings' of a Prel indicates what are the acceptable modes of SelectionVector
of its child Prel</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html#getSupportedEncodings--">getSupportedEncodings</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a></code></dd>
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<a name="getEncoding--">
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<h4>getEncoding</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/drill/exec/record/BatchSchema.SelectionVectorMode.html" title="enum in org.apache.drill.exec.record">BatchSchema.SelectionVectorMode</a>&nbsp;getEncoding()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html#getEncoding--">Prel</a></code></span></div>
<div class="block">A Prel's own SelectionVector mode - i.e whether it generates an SV2, SV4 or None</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html#getEncoding--">getEncoding</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a></code></dd>
</dl>
</li>
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<h4>needsFinalColumnReordering</h4>
<pre>public&nbsp;boolean&nbsp;needsFinalColumnReordering()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html#needsFinalColumnReordering--">needsFinalColumnReordering</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../org/apache/drill/exec/planner/physical/Prel.html" title="interface in org.apache.drill.exec.planner.physical">Prel</a></code></dd>
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