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| <li>Summary: </li> |
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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.plan</a></div> |
| <h2 title="Class RelOptRuleOperand" class="title">Class RelOptRuleOperand</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.plan.RelOptRuleOperand</li> |
| </ul> |
| </li> |
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| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><code><a href="RelOptRule.ConverterRelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRule.ConverterRelOptRuleOperand</a></code></dd> |
| </dl> |
| <hr> |
| <pre>public class <span class="typeNameLabel">RelOptRuleOperand</span> |
| extends java.lang.Object</pre> |
| <div class="block">Operand that determines whether a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a> |
| can be applied to a particular expression. |
| |
| <p>For example, the rule to pull a filter up from the left side of a join |
| takes operands: <code>Join(Filter, Any)</code>.</p> |
| |
| <p>Note that <code>children</code> means different things if it is empty or |
| it is <code>null</code>: <code>Join(Filter <b>()</b>, Any)</code> means |
| that, to match the rule, <code>Filter</code> must have no operands.</p></div> |
| </li> |
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| </a> |
| <h3>Field Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Fields</span><span class="tabEnd"> </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><a href="RelOptRuleOperandChildPolicy.html" title="enum in org.apache.calcite.plan">RelOptRuleOperandChildPolicy</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#childPolicy">childPolicy</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Whether child operands can be matched in any order.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private com.google.common.collect.ImmutableList<<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#children">children</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private java.lang.Class<? extends <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#clazz">clazz</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#ordinalInParent">ordinalInParent</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#ordinalInRule">ordinalInRule</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#parent">parent</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private java.util.function.Predicate<<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#predicate">predicate</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rule">rule</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>int[]</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#solveOrder">solveOrder</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#trait">trait</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
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| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier</th> |
| <th class="colSecond" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>(package private)</code></td> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildPolicy,com.google.common.collect.ImmutableList)">RelOptRuleOperand</a></span>​(java.lang.Class<R> clazz, |
| <a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a> trait, |
| java.util.function.Predicate<? super R> predicate, |
| <a href="RelOptRuleOperandChildPolicy.html" title="enum in org.apache.calcite.plan">RelOptRuleOperandChildPolicy</a> childPolicy, |
| com.google.common.collect.ImmutableList<<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>> children)</code></th> |
| <td class="colLast"> |
| <div class="block">Private constructor.</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(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildren)">RelOptRuleOperand</a></span>​(java.lang.Class<R> clazz, |
| <a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a> trait, |
| java.util.function.Predicate<? super R> predicate, |
| <a href="RelOptRuleOperandChildren.html" title="class in org.apache.calcite.plan">RelOptRuleOperandChildren</a> children)</code></th> |
| <td class="colLast"> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="deprecationComment">Use |
| <a href="RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelOptRuleOperandChildren)"><code>RelOptRule.operand(Class, RelOptRuleOperandChildren)</code></a> or one of its |
| overloaded methods.</div> |
| </div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <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> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equals(java.lang.Object)">equals</a></span>​(java.lang.Object obj)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>java.util.List<<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getChildOperands()">getChildOperands</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the child operands.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>java.lang.Class<? extends <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMatchedClass()">getMatchedClass</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getParent()">getParent</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the parent operand.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRule()">getRule</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the rule this operand belongs to.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hashCode()">hashCode</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#matches(org.apache.calcite.rel.RelNode)">matches</a></span>​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether a relational expression matches this operand.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setParent(org.apache.calcite.plan.RelOptRuleOperand)">setParent</a></span>​(<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a> parent)</code></th> |
| <td class="colLast"> |
| <div class="block">Sets the parent operand.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setRule(org.apache.calcite.plan.RelOptRule)">setRule</a></span>​(<a href="RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> rule)</code></th> |
| <td class="colLast"> |
| <div class="block">Sets the rule this operand belongs to</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
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| <h4>parent</h4> |
| <pre>private <a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a> parent</pre> |
| </li> |
| </ul> |
| <a id="rule"> |
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| </a> |
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| <h4>rule</h4> |
| <pre>private <a href="RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> rule</pre> |
| </li> |
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| <a id="predicate"> |
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| <h4>predicate</h4> |
| <pre>private final java.util.function.Predicate<<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>> predicate</pre> |
| </li> |
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| <h4>solveOrder</h4> |
| <pre>public int[] solveOrder</pre> |
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| <h4>ordinalInParent</h4> |
| <pre>public int ordinalInParent</pre> |
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| <h4>ordinalInRule</h4> |
| <pre>public int ordinalInRule</pre> |
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| <h4>trait</h4> |
| <pre>private final <a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a> trait</pre> |
| </li> |
| </ul> |
| <a id="clazz"> |
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| <h4>clazz</h4> |
| <pre>private final java.lang.Class<? extends <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>> clazz</pre> |
| </li> |
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| <h4>children</h4> |
| <pre>private final com.google.common.collect.ImmutableList<<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>> children</pre> |
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| <h4>childPolicy</h4> |
| <pre>public final <a href="RelOptRuleOperandChildPolicy.html" title="enum in org.apache.calcite.plan">RelOptRuleOperandChildPolicy</a> childPolicy</pre> |
| <div class="block">Whether child operands can be matched in any order.</div> |
| </li> |
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| <h3>Constructor Detail</h3> |
| <a id="<init>(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildren)"> |
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| <h4>RelOptRuleOperand</h4> |
| <pre>@Deprecated |
| protected RelOptRuleOperand​(java.lang.Class<R> clazz, |
| <a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a> trait, |
| java.util.function.Predicate<? super R> predicate, |
| <a href="RelOptRuleOperandChildren.html" title="class in org.apache.calcite.plan">RelOptRuleOperandChildren</a> children)</pre> |
| <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="deprecationComment">Use |
| <a href="RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelOptRuleOperandChildren)"><code>RelOptRule.operand(Class, RelOptRuleOperandChildren)</code></a> or one of its |
| overloaded methods.</div> |
| </div> |
| <div class="block">Creates an operand. |
| |
| <p>The <code>childOperands</code> argument is often populated by calling one |
| of the following methods: |
| <a href="RelOptRule.html#some(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)"><code>RelOptRule.some(org.apache.calcite.plan.RelOptRuleOperand, org.apache.calcite.plan.RelOptRuleOperand...)</code></a>, |
| <a href="RelOptRule.html#none()"><code>RelOptRule.none()</code></a>, |
| <a href="RelOptRule.html#any()"><code>RelOptRule.any()</code></a>, |
| <a href="RelOptRule.html#unordered(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)"><code>RelOptRule.unordered(org.apache.calcite.plan.RelOptRuleOperand, org.apache.calcite.plan.RelOptRuleOperand...)</code></a>, |
| See <a href="RelOptRuleOperandChildren.html" title="class in org.apache.calcite.plan"><code>RelOptRuleOperandChildren</code></a> for more |
| details.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>clazz</code> - Class of relational expression to match (must not be null)</dd> |
| <dd><code>trait</code> - Trait to match, or null to match any trait</dd> |
| <dd><code>predicate</code> - Predicate to apply to relational expression</dd> |
| <dd><code>children</code> - Child operands</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="<init>(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildPolicy,com.google.common.collect.ImmutableList)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>RelOptRuleOperand</h4> |
| <pre>RelOptRuleOperand​(java.lang.Class<R> clazz, |
| <a href="RelTrait.html" title="interface in org.apache.calcite.plan">RelTrait</a> trait, |
| java.util.function.Predicate<? super R> predicate, |
| <a href="RelOptRuleOperandChildPolicy.html" title="enum in org.apache.calcite.plan">RelOptRuleOperandChildPolicy</a> childPolicy, |
| com.google.common.collect.ImmutableList<<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>> children)</pre> |
| <div class="block">Private constructor. |
| |
| <p>Do not call from outside package, and do not create a sub-class. |
| |
| <p>The other constructor is deprecated; when it is removed, make fields |
| <a href="#parent"><code>parent</code></a>, <a href="#ordinalInParent"><code>ordinalInParent</code></a> and <a href="#solveOrder"><code>solveOrder</code></a> final, |
| and add constructor parameters for them. See |
| <a href="https://issues.apache.org/jira/browse/CALCITE-1166">[CALCITE-1166] |
| Disallow sub-classes of RelOptRuleOperand</a>.</div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a id="getParent()"> |
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| </a> |
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| <li class="blockList"> |
| <h4>getParent</h4> |
| <pre class="methodSignature">public <a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a> getParent()</pre> |
| <div class="block">Returns the parent operand.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>parent operand</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="setParent(org.apache.calcite.plan.RelOptRuleOperand)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>setParent</h4> |
| <pre class="methodSignature">public void setParent​(<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a> parent)</pre> |
| <div class="block">Sets the parent operand.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>parent</code> - Parent operand</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getRule()"> |
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| </a> |
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| <li class="blockList"> |
| <h4>getRule</h4> |
| <pre class="methodSignature">public <a href="RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> getRule()</pre> |
| <div class="block">Returns the rule this operand belongs to.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>containing rule</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="setRule(org.apache.calcite.plan.RelOptRule)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>setRule</h4> |
| <pre class="methodSignature">public void setRule​(<a href="RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> rule)</pre> |
| <div class="block">Sets the rule this operand belongs to</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>rule</code> - containing rule</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="hashCode()"> |
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| <li class="blockList"> |
| <h4>hashCode</h4> |
| <pre class="methodSignature">public int hashCode()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>hashCode</code> in class <code>java.lang.Object</code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="equals(java.lang.Object)"> |
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| <h4>equals</h4> |
| <pre class="methodSignature">public boolean equals​(java.lang.Object obj)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>equals</code> in class <code>java.lang.Object</code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getMatchedClass()"> |
| <!-- --> |
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| <li class="blockList"> |
| <h4>getMatchedClass</h4> |
| <pre class="methodSignature">public java.lang.Class<? extends <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>> getMatchedClass()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>relational expression class matched by this operand</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getChildOperands()"> |
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| <h4>getChildOperands</h4> |
| <pre class="methodSignature">public java.util.List<<a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>> getChildOperands()</pre> |
| <div class="block">Returns the child operands.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>child operands</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="matches(org.apache.calcite.rel.RelNode)"> |
| <!-- --> |
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| <h4>matches</h4> |
| <pre class="methodSignature">public boolean matches​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel)</pre> |
| <div class="block">Returns whether a relational expression matches this operand. It must be |
| of the right class and trait.</div> |
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