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| <h2 title="类 MultiJoinProjectTransposeRule" class="title">类 MultiJoinProjectTransposeRule</h2> |
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| <ul class="inheritance"> |
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| <ul class="inheritance"> |
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| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">org.apache.calcite.rel.rules.JoinProjectTransposeRule</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.rel.rules.MultiJoinProjectTransposeRule</li> |
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| <div class="description"> |
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| <br> |
| <pre>public class <span class="typeNameLabel">MultiJoinProjectTransposeRule</span> |
| extends <a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">JoinProjectTransposeRule</a></pre> |
| <div class="block">MultiJoinProjectTransposeRule implements the rule for pulling |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalProject.html" title="org.apache.calcite.rel.logical中的类"><code>LogicalProject</code></a>s that are on top of a |
| <a href="../../../../../org/apache/calcite/rel/rules/MultiJoin.html" title="org.apache.calcite.rel.rules中的类"><code>MultiJoin</code></a> and beneath a |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalJoin.html" title="org.apache.calcite.rel.logical中的类"><code>LogicalJoin</code></a> so the |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalProject.html" title="org.apache.calcite.rel.logical中的类"><code>LogicalProject</code></a> appears above the |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalJoin.html" title="org.apache.calcite.rel.logical中的类"><code>LogicalJoin</code></a>. |
| |
| <p>In the process of doing |
| so, also save away information about the respective fields that are |
| referenced in the expressions in the |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalProject.html" title="org.apache.calcite.rel.logical中的类"><code>LogicalProject</code></a> we're pulling up, as |
| well as the join condition, in the resultant <a href="../../../../../org/apache/calcite/rel/rules/MultiJoin.html" title="org.apache.calcite.rel.rules中的类"><code>MultiJoin</code></a>s |
| |
| <p>For example, if we have the following sub-query: |
| |
| <blockquote><pre> |
| (select X.x1, Y.y1 from X, Y |
| where X.x2 = Y.y2 and X.x3 = 1 and Y.y3 = 2)</pre></blockquote> |
| |
| <p>The <a href="../../../../../org/apache/calcite/rel/rules/MultiJoin.html" title="org.apache.calcite.rel.rules中的类"><code>MultiJoin</code></a> associated with (X, Y) associates x1 with X and |
| y1 with Y. Although x3 and y3 need to be read due to the filters, they are |
| not required after the row scan has completed and therefore are not saved. |
| The join fields, x2 and y2, are also tracked separately. |
| |
| <p>Note that by only pulling up projects that are on top of |
| <a href="../../../../../org/apache/calcite/rel/rules/MultiJoin.html" title="org.apache.calcite.rel.rules中的类"><code>MultiJoin</code></a>s, we preserve projections on top of row scans. |
| |
| <p>See the superclass for details on restrictions regarding which |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalProject.html" title="org.apache.calcite.rel.logical中的类"><code>LogicalProject</code></a>s cannot be pulled.</div> |
| </li> |
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| <!-- =========== FIELD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.summary"> |
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| </a> |
| <h3>字段概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="字段概要表, 列表字段和解释"> |
| <caption><span>字段</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">限定符和类型</th> |
| <th class="colLast" scope="col">字段和说明</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">MultiJoinProjectTransposeRule</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html#MULTI_BOTH_PROJECT">MULTI_BOTH_PROJECT</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">MultiJoinProjectTransposeRule</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html#MULTI_LEFT_PROJECT">MULTI_LEFT_PROJECT</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">MultiJoinProjectTransposeRule</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html#MULTI_RIGHT_PROJECT">MULTI_RIGHT_PROJECT</a></span></code> </td> |
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| <h3>从类继承的字段 org.apache.calcite.rel.rules.<a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">JoinProjectTransposeRule</a></h3> |
| <code><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#BOTH_PROJECT">BOTH_PROJECT</a>, <a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#BOTH_PROJECT_INCLUDE_OUTER">BOTH_PROJECT_INCLUDE_OUTER</a>, <a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#LEFT_PROJECT">LEFT_PROJECT</a>, <a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#LEFT_PROJECT_INCLUDE_OUTER">LEFT_PROJECT_INCLUDE_OUTER</a>, <a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#RIGHT_PROJECT">RIGHT_PROJECT</a>, <a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#RIGHT_PROJECT_INCLUDE_OUTER">RIGHT_PROJECT_INCLUDE_OUTER</a></code></li> |
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| <h3>从类继承的字段 org.apache.calcite.plan.<a href="../../../../../org/apache/calcite/plan/RelOptRule.html" title="org.apache.calcite.plan中的类">RelOptRule</a></h3> |
| <code><a href="../../../../../org/apache/calcite/plan/RelOptRule.html#description">description</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#operands">operands</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#relBuilderFactory">relBuilderFactory</a></code></li> |
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| <ul class="blockList"> |
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| </a> |
| <h3>构造器概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="构造器概要表, 列表构造器和解释"> |
| <caption><span>构造器</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">构造器和说明</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html#MultiJoinProjectTransposeRule-org.apache.calcite.plan.RelOptRuleOperand-org.apache.calcite.tools.RelBuilderFactory-java.lang.String-">MultiJoinProjectTransposeRule</a></span>(<a href="../../../../../org/apache/calcite/plan/RelOptRuleOperand.html" title="org.apache.calcite.plan中的类">RelOptRuleOperand</a> operand, |
| <a href="../../../../../org/apache/calcite/tools/RelBuilderFactory.html" title="org.apache.calcite.tools中的接口">RelBuilderFactory</a> relBuilderFactory, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a> description)</code> |
| <div class="block">Creates a MultiJoinProjectTransposeRule.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html#MultiJoinProjectTransposeRule-org.apache.calcite.plan.RelOptRuleOperand-java.lang.String-">MultiJoinProjectTransposeRule</a></span>(<a href="../../../../../org/apache/calcite/plan/RelOptRuleOperand.html" title="org.apache.calcite.plan中的类">RelOptRuleOperand</a> operand, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a> description)</code> |
| <div class="block"><span class="deprecatedLabel">已过时。</span> </div> |
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| <h3>方法概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="方法概要表, 列表方法和解释"> |
| <caption><span id="t0" class="activeTableTab"><span>所有方法</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">实例方法</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">限定符和类型</th> |
| <th class="colLast" scope="col">方法和说明</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html#getProjectChild-org.apache.calcite.plan.RelOptRuleCall-org.apache.calcite.rel.core.Project-boolean-">getProjectChild</a></span>(<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a> call, |
| <a href="../../../../../org/apache/calcite/rel/core/Project.html" title="org.apache.calcite.rel.core中的类">Project</a> project, |
| boolean leftChild)</code> |
| <div class="block">Returns the child of the project that will be used as input into the new |
| LogicalJoin once the projects are pulled above the LogicalJoin.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../org/apache/calcite/rel/core/Project.html" title="org.apache.calcite.rel.core中的类">Project</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html#getRightChild-org.apache.calcite.plan.RelOptRuleCall-">getRightChild</a></span>(<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a> call)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html#hasLeftChild-org.apache.calcite.plan.RelOptRuleCall-">hasLeftChild</a></span>(<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a> call)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html#hasRightChild-org.apache.calcite.plan.RelOptRuleCall-">hasRightChild</a></span>(<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a> call)</code> </td> |
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| <h3>从类继承的方法 org.apache.calcite.rel.rules.<a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">JoinProjectTransposeRule</a></h3> |
| <code><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#createProjectExprs-org.apache.calcite.rel.core.Project-org.apache.calcite.rel.RelNode-int-org.apache.calcite.rex.RexBuilder-java.util.List-java.util.List-">createProjectExprs</a>, <a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#onMatch-org.apache.calcite.plan.RelOptRuleCall-">onMatch</a></code></li> |
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| <code><a href="../../../../../org/apache/calcite/plan/RelOptRule.html#any--">any</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#convert-org.apache.calcite.rel.RelNode-org.apache.calcite.plan.RelTrait-">convert</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#convert-org.apache.calcite.rel.RelNode-org.apache.calcite.plan.RelTraitSet-">convert</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#convertList-java.util.List-org.apache.calcite.plan.RelTrait-">convertList</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#convertOperand-java.lang.Class-java.util.function.Predicate-org.apache.calcite.plan.RelTrait-">convertOperand</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#convertOperand-java.lang.Class-com.google.common.base.Predicate-org.apache.calcite.plan.RelTrait-">convertOperand</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#equals-java.lang.Object-">equals</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#equals-org.apache.calcite.plan.RelOptRule-">equals</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#getOperand--">getOperand</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#getOperands--">getOperands</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#getOutConvention--">getOutConvention</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#getOutTrait--">getOutTrait</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#hashCode--">hashCode</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#matches-org.apache.calcite.plan.RelOptRuleCall-">matches</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#none--">none</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#operand-java.lang.Class-org.apache.calcite.plan.RelOptRuleOperandChildren-">operand</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#operand-java.lang.Class-org.apache.calcite.plan.RelOptRuleOperand-org.apache.calcite.plan.RelOptRuleOperand...-">operand</a>, <a href="../../../../../org/apache/calcite/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="../../../../../org/apache/calcite/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="../../../../../org/apache/calcite/plan/RelOptRule.html#operand-java.lang.Class-org.apache.calcite.plan.RelTrait-org.apache.calcite.plan.RelOptRuleOperandChildren-">operand</a>, <a href="../../../../../org/apache/calcite/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="../../../../../org/apache/calcite/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="../../../../../org/apache/calcite/plan/RelOptRule.html#some-org.apache.calcite.plan.RelOptRuleOperand-org.apache.calcite.plan.RelOptRuleOperand...-">some</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#toString--">toString</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#unordered-org.apache.calcite.plan.RelOptRuleOperand-org.apache.calcite.plan.RelOptRuleOperand...-">unordered</a></code></li> |
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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="java.lang中的类或接口">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="java.lang中的类或接口">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="java.lang中的类或接口">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="java.lang中的类或接口">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="java.lang中的类或接口">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="java.lang中的类或接口">wait</a></code></li> |
| </ul> |
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| <h3>字段详细资料</h3> |
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| <pre>public static final <a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">MultiJoinProjectTransposeRule</a> MULTI_BOTH_PROJECT</pre> |
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| <pre>public static final <a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">MultiJoinProjectTransposeRule</a> MULTI_LEFT_PROJECT</pre> |
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| <pre>public static final <a href="../../../../../org/apache/calcite/rel/rules/MultiJoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">MultiJoinProjectTransposeRule</a> MULTI_RIGHT_PROJECT</pre> |
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| <h3>构造器详细资料</h3> |
| <a name="MultiJoinProjectTransposeRule-org.apache.calcite.plan.RelOptRuleOperand-java.lang.String-"> |
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| <h4>MultiJoinProjectTransposeRule</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="java.lang中的类或接口">@Deprecated</a> |
| public MultiJoinProjectTransposeRule(<a href="../../../../../org/apache/calcite/plan/RelOptRuleOperand.html" title="org.apache.calcite.plan中的类">RelOptRuleOperand</a> operand, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a> description)</pre> |
| <div class="block"><span class="deprecatedLabel">已过时。</span> </div> |
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| <a name="MultiJoinProjectTransposeRule-org.apache.calcite.plan.RelOptRuleOperand-org.apache.calcite.tools.RelBuilderFactory-java.lang.String-"> |
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| <pre>public MultiJoinProjectTransposeRule(<a href="../../../../../org/apache/calcite/plan/RelOptRuleOperand.html" title="org.apache.calcite.plan中的类">RelOptRuleOperand</a> operand, |
| <a href="../../../../../org/apache/calcite/tools/RelBuilderFactory.html" title="org.apache.calcite.tools中的接口">RelBuilderFactory</a> relBuilderFactory, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a> description)</pre> |
| <div class="block">Creates a MultiJoinProjectTransposeRule.</div> |
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| <pre>protected boolean hasLeftChild(<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a> call)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#hasLeftChild-org.apache.calcite.plan.RelOptRuleCall-">hasLeftChild</a></code> 在类中 <code><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">JoinProjectTransposeRule</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>call</code> - RelOptRuleCall</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>true if the rule was invoked with a left project child</dd> |
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| <pre>protected boolean hasRightChild(<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a> call)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#hasRightChild-org.apache.calcite.plan.RelOptRuleCall-">hasRightChild</a></code> 在类中 <code><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">JoinProjectTransposeRule</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>call</code> - RelOptRuleCall</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>true if the rule was invoked with 2 children</dd> |
| </dl> |
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| <pre>protected <a href="../../../../../org/apache/calcite/rel/core/Project.html" title="org.apache.calcite.rel.core中的类">Project</a> getRightChild(<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a> call)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#getRightChild-org.apache.calcite.plan.RelOptRuleCall-">getRightChild</a></code> 在类中 <code><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">JoinProjectTransposeRule</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>call</code> - RelOptRuleCall</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>LogicalProject corresponding to the right child</dd> |
| </dl> |
| </li> |
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| <h4>getProjectChild</h4> |
| <pre>protected <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a> getProjectChild(<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a> call, |
| <a href="../../../../../org/apache/calcite/rel/core/Project.html" title="org.apache.calcite.rel.core中的类">Project</a> project, |
| boolean leftChild)</pre> |
| <div class="block"><span class="descfrmTypeLabel">从类复制的说明: <code><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#getProjectChild-org.apache.calcite.plan.RelOptRuleCall-org.apache.calcite.rel.core.Project-boolean-">JoinProjectTransposeRule</a></code></span></div> |
| <div class="block">Returns the child of the project that will be used as input into the new |
| LogicalJoin once the projects are pulled above the LogicalJoin.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html#getProjectChild-org.apache.calcite.plan.RelOptRuleCall-org.apache.calcite.rel.core.Project-boolean-">getProjectChild</a></code> 在类中 <code><a href="../../../../../org/apache/calcite/rel/rules/JoinProjectTransposeRule.html" title="org.apache.calcite.rel.rules中的类">JoinProjectTransposeRule</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>call</code> - RelOptRuleCall</dd> |
| <dd><code>project</code> - project RelNode</dd> |
| <dd><code>leftChild</code> - true if the project corresponds to the left projection</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>child of the project that will be used as input into the new |
| LogicalJoin once the projects are pulled above the LogicalJoin</dd> |
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