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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.rel.rules</a></div> |
| <h1 title="Class JoinCommuteRule" class="title">Class JoinCommuteRule</h1> |
| </div> |
| <div class="contentContainer"> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">java.lang.Object</a> |
| <div class="inheritance"><a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">org.apache.calcite.plan.RelOptRule</a> |
| <div class="inheritance"><a href="../../plan/RelRule.html" title="class in org.apache.calcite.plan">org.apache.calcite.plan.RelRule</a><<a href="JoinCommuteRule.Config.html" title="interface in org.apache.calcite.rel.rules">JoinCommuteRule.Config</a>> |
| <div class="inheritance">org.apache.calcite.rel.rules.JoinCommuteRule</div> |
| </div> |
| </div> |
| </div> |
| <section class="description"> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="TransformationRule.html" title="interface in org.apache.calcite.rel.rules">TransformationRule</a></code></dd> |
| </dl> |
| <hr> |
| <pre>public class <span class="typeNameLabel">JoinCommuteRule</span> |
| extends <a href="../../plan/RelRule.html" title="class in org.apache.calcite.plan">RelRule</a><<a href="JoinCommuteRule.Config.html" title="interface in org.apache.calcite.rel.rules">JoinCommuteRule.Config</a>> |
| implements <a href="TransformationRule.html" title="interface in org.apache.calcite.rel.rules">TransformationRule</a></pre> |
| <div class="block">Planner rule that permutes the inputs to a |
| <a href="../core/Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a>. |
| |
| <p>Permutation of outer joins can be turned on/off by specifying the |
| swapOuter flag in the constructor. |
| |
| <p>To preserve the order of columns in the output row, the rule adds a |
| <a href="../core/Project.html" title="class in org.apache.calcite.rel.core"><code>Project</code></a>.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="CoreRules.html#JOIN_COMMUTE"><code>CoreRules.JOIN_COMMUTE</code></a>, |
| <a href="CoreRules.html#JOIN_COMMUTE_OUTER"><code>CoreRules.JOIN_COMMUTE_OUTER</code></a></dd> |
| </dl> |
| </section> |
| <section class="summary"> |
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| <!-- ======== NESTED CLASS SUMMARY ======== --> |
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| <div class="memberSummary"> |
| <table> |
| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <thead> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static interface </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="JoinCommuteRule.Config.html" title="interface in org.apache.calcite.rel.rules">JoinCommuteRule.Config</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Rule configuration.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <div class="inheritedList"> |
| <h2>Nested classes/interfaces inherited from class org.apache.calcite.plan.<a href="../../plan/RelRule.html" title="class in org.apache.calcite.plan">RelRule</a></h2> |
| <a id="nested.classes.inherited.from.class.org.apache.calcite.plan.RelRule"> |
| <!-- --> |
| </a><code><a href="../../plan/RelRule.Done.html" title="interface in org.apache.calcite.plan">RelRule.Done</a>, <a href="../../plan/RelRule.MatchHandler.html" title="interface in org.apache.calcite.plan">RelRule.MatchHandler</a><<a href="../../plan/RelRule.MatchHandler.html" title="type parameter in RelRule.MatchHandler">R</a> extends <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a>>, <a href="../../plan/RelRule.OperandBuilder.html" title="interface in org.apache.calcite.plan">RelRule.OperandBuilder</a>, <a href="../../plan/RelRule.OperandDetailBuilder.html" title="interface in org.apache.calcite.plan">RelRule.OperandDetailBuilder</a><<a href="../../plan/RelRule.OperandDetailBuilder.html" title="type parameter in RelRule.OperandDetailBuilder">R</a> extends <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>>, <a href="../../plan/RelRule.OperandTransform.html" title="interface in org.apache.calcite.plan">RelRule.OperandTransform</a></code></div> |
| <div class="inheritedList"> |
| <h2>Nested classes/interfaces inherited from class org.apache.calcite.plan.<a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></h2> |
| <a id="nested.classes.inherited.from.class.org.apache.calcite.plan.RelOptRule"> |
| <!-- --> |
| </a><code><a href="../../plan/RelOptRule.ConverterRelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRule.ConverterRelOptRuleOperand</a></code></div> |
| </section> |
| </li> |
| <!-- =========== FIELD SUMMARY =========== --> |
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| <section class="fieldSummary"><a id="field.summary"> |
| <!-- --> |
| </a> |
| <h2>Field Summary</h2> |
| <div class="inheritedList"> |
| <h3>Fields inherited from class org.apache.calcite.plan.<a href="../../plan/RelRule.html" title="class in org.apache.calcite.plan">RelRule</a></h3> |
| <a id="fields.inherited.from.class.org.apache.calcite.plan.RelRule"> |
| <!-- --> |
| </a><code><a href="../../plan/RelRule.html#config">config</a></code></div> |
| <div class="inheritedList"> |
| <h3>Fields inherited from class org.apache.calcite.plan.<a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></h3> |
| <a id="fields.inherited.from.class.org.apache.calcite.plan.RelOptRule"> |
| <!-- --> |
| </a><code><a href="../../plan/RelOptRule.html#description">description</a>, <a href="../../plan/RelOptRule.html#operands">operands</a>, <a href="../../plan/RelOptRule.html#relBuilderFactory">relBuilderFactory</a></code></div> |
| </section> |
| </li> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <li class="blockList"> |
| <section class="constructorSummary"><a id="constructor.summary"> |
| <!-- --> |
| </a> |
| <h2>Constructor Summary</h2> |
| <div class="memberSummary"> |
| <table> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <thead> |
| <tr> |
| <th class="colFirst" scope="col">Modifier</th> |
| <th class="colSecond" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><code> </code></td> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.lang.Class,org.apache.calcite.rel.core.RelFactories.ProjectFactory)">JoinCommuteRule</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><? extends <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>> clazz, |
| <a href="../core/RelFactories.ProjectFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.ProjectFactory</a> projectFactory)</code></th> |
| <td class="colLast"> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span></div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code> </code></td> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.lang.Class,org.apache.calcite.rel.core.RelFactories.ProjectFactory,boolean)">JoinCommuteRule</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><? extends <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>> clazz, |
| <a href="../core/RelFactories.ProjectFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.ProjectFactory</a> projectFactory, |
| boolean swapOuter)</code></th> |
| <td class="colLast"> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span></div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code> </code></td> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.lang.Class,org.apache.calcite.tools.RelBuilderFactory,boolean)">JoinCommuteRule</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><? extends <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>> clazz, |
| <a href="../../tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a> relBuilderFactory, |
| boolean swapOuter)</code></th> |
| <td class="colLast"> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span></div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.rel.rules.JoinCommuteRule.Config)">JoinCommuteRule</a></span>​(<a href="JoinCommuteRule.Config.html" title="interface in org.apache.calcite.rel.rules">JoinCommuteRule.Config</a> config)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a JoinCommuteRule.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <li class="blockList"> |
| <section class="methodSummary"><a id="method.summary"> |
| <!-- --> |
| </a> |
| <h2>Method Summary</h2> |
| <div class="memberSummary"> |
| <div role="tablist" aria-orientation="horizontal"><button role="tab" aria-selected="true" aria-controls="memberSummary_tabpanel" tabindex="0" onkeydown="switchTab(event)" id="t0" class="activeTableTab">All Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t1" class="tableTab" onclick="show(1);">Static Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t2" class="tableTab" onclick="show(2);">Instance Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t4" class="tableTab" onclick="show(8);">Concrete Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t6" class="tableTab" onclick="show(32);">Deprecated Methods</button></div> |
| <div id="memberSummary_tabpanel" role="tabpanel"> |
| <table aria-labelledby="t0"> |
| <thead> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="altColor" id="i0"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#matches(org.apache.calcite.plan.RelOptRuleCall)">matches</a></span>​(<a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a> call)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether this rule could possibly match the given operands.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i1"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onMatch(org.apache.calcite.plan.RelOptRuleCall)">onMatch</a></span>​(<a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a> call)</code></th> |
| <td class="colLast"> |
| <div class="block">Receives notification about a rule match.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i2"> |
| <td class="colFirst"><code>static <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#swap(org.apache.calcite.rel.core.Join)">swap</a></span>​(<a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a> join)</code></th> |
| <td class="colLast"> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span></div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i3"> |
| <td class="colFirst"><code>static <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#swap(org.apache.calcite.rel.core.Join,boolean)">swap</a></span>​(<a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a> join, |
| boolean swapOuterJoins)</code></th> |
| <td class="colLast"> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span></div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i4"> |
| <td class="colFirst"><code>static <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#swap(org.apache.calcite.rel.core.Join,boolean,org.apache.calcite.tools.RelBuilder)">swap</a></span>​(<a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a> join, |
| boolean swapOuterJoins, |
| <a href="../../tools/RelBuilder.html" title="class in org.apache.calcite.tools">RelBuilder</a> relBuilder)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a relational expression with the inputs switched round.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| <div class="inheritedList"> |
| <h3>Methods inherited from class org.apache.calcite.plan.<a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></h3> |
| <a id="methods.inherited.from.class.org.apache.calcite.plan.RelOptRule"> |
| <!-- --> |
| </a><code><a href="../../plan/RelOptRule.html#any()">any</a>, <a href="../../plan/RelOptRule.html#convert(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelTrait)">convert</a>, <a href="../../plan/RelOptRule.html#convert(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelTraitSet)">convert</a>, <a href="../../plan/RelOptRule.html#convertList(java.util.List,org.apache.calcite.plan.RelTrait)">convertList</a>, <a href="../../plan/RelOptRule.html#convertOperand(java.lang.Class,com.google.common.base.Predicate,org.apache.calcite.plan.RelTrait)">convertOperand</a>, <a href="../../plan/RelOptRule.html#convertOperand(java.lang.Class,java.util.function.Predicate,org.apache.calcite.plan.RelTrait)">convertOperand</a>, <a href="../../plan/RelOptRule.html#equals(java.lang.Object)">equals</a>, <a href="../../plan/RelOptRule.html#equals(org.apache.calcite.plan.RelOptRule)">equals</a>, <a href="../../plan/RelOptRule.html#getOperand()">getOperand</a>, <a href="../../plan/RelOptRule.html#getOperands()">getOperands</a>, <a href="../../plan/RelOptRule.html#getOutConvention()">getOutConvention</a>, <a href="../../plan/RelOptRule.html#getOutTrait()">getOutTrait</a>, <a href="../../plan/RelOptRule.html#hashCode()">hashCode</a>, <a href="../../plan/RelOptRule.html#none()">none</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,com.google.common.base.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,com.google.common.base.Predicate,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../../plan/RelOptRule.html#operandJ(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildren)">operandJ</a>, <a href="../../plan/RelOptRule.html#operandJ(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operandJ</a>, <a href="../../plan/RelOptRule.html#some(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">some</a>, <a href="../../plan/RelOptRule.html#toString()">toString</a>, <a href="../../plan/RelOptRule.html#unordered(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">unordered</a></code></div> |
| <div class="inheritedList"> |
| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3> |
| <a id="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
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| <h3><a id="<init>(org.apache.calcite.rel.rules.JoinCommuteRule.Config)">JoinCommuteRule</a></h3> |
| <div class="memberSignature"><span class="modifiers">protected</span> <span class="memberName">JoinCommuteRule</span>​(<span class="arguments"><a href="JoinCommuteRule.Config.html" title="interface in org.apache.calcite.rel.rules">JoinCommuteRule.Config</a> config)</span></div> |
| <div class="block">Creates a JoinCommuteRule.</div> |
| </section> |
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| <h3><a id="<init>(java.lang.Class,org.apache.calcite.tools.RelBuilderFactory,boolean)">JoinCommuteRule</a></h3> |
| <div class="memberSignature"><span class="annotations"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink">@Deprecated</a> |
| </span><span class="modifiers">public</span> <span class="memberName">JoinCommuteRule</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><? extends <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>> clazz, |
| <a href="../../tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a> relBuilderFactory, |
| boolean swapOuter)</span></div> |
| <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div> |
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| <h3><a id="<init>(java.lang.Class,org.apache.calcite.rel.core.RelFactories.ProjectFactory)">JoinCommuteRule</a></h3> |
| <div class="memberSignature"><span class="annotations"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink">@Deprecated</a> |
| </span><span class="modifiers">public</span> <span class="memberName">JoinCommuteRule</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><? extends <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>> clazz, |
| <a href="../core/RelFactories.ProjectFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.ProjectFactory</a> projectFactory)</span></div> |
| <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div> |
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| <h3><a id="<init>(java.lang.Class,org.apache.calcite.rel.core.RelFactories.ProjectFactory,boolean)">JoinCommuteRule</a></h3> |
| <div class="memberSignature"><span class="annotations"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink">@Deprecated</a> |
| </span><span class="modifiers">public</span> <span class="memberName">JoinCommuteRule</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><? extends <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>> clazz, |
| <a href="../core/RelFactories.ProjectFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.ProjectFactory</a> projectFactory, |
| boolean swapOuter)</span></div> |
| <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div> |
| </section> |
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| </ul> |
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| <h3><a id="swap(org.apache.calcite.rel.core.Join)">swap</a></h3> |
| <div class="memberSignature"><span class="annotations"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink">@Deprecated</a> |
| </span><span class="modifiers">public static</span> <span class="returnType"><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></span> <span class="memberName">swap</span>​(<span class="arguments"><a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a> join)</span></div> |
| <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div> |
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| <section class="detail"> |
| <h3><a id="swap(org.apache.calcite.rel.core.Join,boolean)">swap</a></h3> |
| <div class="memberSignature"><span class="annotations"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink">@Deprecated</a> |
| </span><span class="modifiers">public static</span> <span class="returnType"><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></span> <span class="memberName">swap</span>​(<span class="arguments"><a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a> join, |
| boolean swapOuterJoins)</span></div> |
| <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div> |
| </section> |
| </li> |
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| <section class="detail"> |
| <h3><a id="swap(org.apache.calcite.rel.core.Join,boolean,org.apache.calcite.tools.RelBuilder)">swap</a></h3> |
| <div class="memberSignature"><span class="modifiers">public static</span> <span class="returnType"><a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></span> <span class="memberName">swap</span>​(<span class="arguments"><a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a> join, |
| boolean swapOuterJoins, |
| <a href="../../tools/RelBuilder.html" title="class in org.apache.calcite.tools">RelBuilder</a> relBuilder)</span></div> |
| <div class="block">Returns a relational expression with the inputs switched round. Does not |
| modify <code>join</code>. Returns null if the join cannot be swapped (for |
| example, because it is an outer join).</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>join</code> - join to be swapped</dd> |
| <dd><code>swapOuterJoins</code> - whether outer joins should be swapped</dd> |
| <dd><code>relBuilder</code> - Builder for relational expressions</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>swapped join if swapping possible; else null</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="matches(org.apache.calcite.plan.RelOptRuleCall)">matches</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">matches</span>​(<span class="arguments"><a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a> call)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../plan/RelOptRule.html#matches(org.apache.calcite.plan.RelOptRuleCall)">RelOptRule</a></code></span></div> |
| <div class="block">Returns whether this rule could possibly match the given operands. |
| |
| <p>This method is an opportunity to apply side-conditions to a rule. The |
| <a href="../../plan/RelOptPlanner.html" title="interface in org.apache.calcite.plan"><code>RelOptPlanner</code></a> calls this method after matching all operands of |
| the rule, and before calling <a href="../../plan/RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)"><code>RelOptRule.onMatch(RelOptRuleCall)</code></a>. |
| |
| <p>In implementations of <a href="../../plan/RelOptPlanner.html" title="interface in org.apache.calcite.plan"><code>RelOptPlanner</code></a> which may queue up a |
| matched <a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan"><code>RelOptRuleCall</code></a> for a long time before calling |
| <a href="../../plan/RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)"><code>RelOptRule.onMatch(RelOptRuleCall)</code></a>, this method is beneficial because it |
| allows the planner to discard rules earlier in the process. |
| |
| <p>The default implementation of this method returns <code>true</code>. |
| It is acceptable for any implementation of this method to give a false |
| positives, that is, to say that the rule matches the operands but have |
| <a href="../../plan/RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)"><code>RelOptRule.onMatch(RelOptRuleCall)</code></a> subsequently not generate any |
| successors. |
| |
| <p>The following script is useful to identify rules which commonly |
| produce no successors. You should override this method for these rules: |
| |
| <blockquote> |
| <pre><code>awk ' |
| /Apply rule/ {rule=$4; ruleCount[rule]++;} |
| /generated 0 successors/ {ruleMiss[rule]++;} |
| END { |
| printf "%-30s %s %s\n", "Rule", "Fire", "Miss"; |
| for (i in ruleCount) { |
| printf "%-30s %5d %5d\n", i, ruleCount[i], ruleMiss[i]; |
| } |
| } ' FarragoTrace.log</code></pre> |
| </blockquote></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../plan/RelOptRule.html#matches(org.apache.calcite.plan.RelOptRuleCall)">matches</a></code> in class <code><a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>call</code> - Rule call which has been determined to match all operands of |
| this rule</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>whether this RelOptRule matches a given RelOptRuleCall</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="onMatch(org.apache.calcite.plan.RelOptRuleCall)">onMatch</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">void</span> <span class="memberName">onMatch</span>​(<span class="arguments"><a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a> call)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../plan/RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)">RelOptRule</a></code></span></div> |
| <div class="block">Receives notification about a rule match. At the time that this method is |
| called, <a href="../../plan/RelOptRuleCall.html#rels"><code>call.rels</code></a> holds the set of relational |
| expressions which match the operands to the rule; <code> |
| call.rels[0]</code> is the root expression. |
| |
| <p>Typically a rule would check that the nodes are valid matches, creates |
| a new expression, then calls back <a href="../../plan/RelOptRuleCall.html#transformTo(org.apache.calcite.rel.RelNode,java.util.Map,org.apache.calcite.plan.RelHintsPropagator)"><code>RelOptRuleCall.transformTo(org.apache.calcite.rel.RelNode, java.util.Map<org.apache.calcite.rel.RelNode, org.apache.calcite.rel.RelNode>, org.apache.calcite.plan.RelHintsPropagator)</code></a> to |
| register the expression.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../plan/RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)">onMatch</a></code> in class <code><a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>call</code> - Rule call</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../plan/RelOptRule.html#matches(org.apache.calcite.plan.RelOptRuleCall)"><code>RelOptRule.matches(RelOptRuleCall)</code></a></dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </section> |
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