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<div class="subTitle">org.apache.calcite.plan.hep</div>
<h2 title="类 HepRuleCall" class="title">类 HepRuleCall</h2>
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<li>org.apache.calcite.plan.hep.HepRuleCall</li>
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<pre>public class <span class="typeNameLabel">HepRuleCall</span>
extends <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a></pre>
<div class="block">HepRuleCall implements <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类"><code>RelOptRuleCall</code></a> for a <a href="../../../../../org/apache/calcite/plan/hep/HepPlanner.html" title="org.apache.calcite.plan.hep中的类"><code>HepPlanner</code></a>. It
remembers transformation results so that the planner can choose which one (if
any) should replace the original expression.</div>
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<h3>从类继承的字段&nbsp;org.apache.calcite.plan.<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a></h3>
<code><a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#id">id</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#LOGGER">LOGGER</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#nodeInputs">nodeInputs</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#operand0">operand0</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#rels">rels</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#rule">rule</a></code></li>
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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">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">实例方法</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">限定符和类型</th>
<th class="colLast" scope="col">方法和说明</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/plan/hep/HepRuleCall.html#transformTo-org.apache.calcite.rel.RelNode-java.util.Map-org.apache.calcite.plan.RelHintsPropagator-">transformTo</a></span>(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="java.util中的类或接口">Map</a>&lt;<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>,<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&gt;&nbsp;equiv,
<a href="../../../../../org/apache/calcite/plan/RelHintsPropagator.html" title="org.apache.calcite.plan中的接口">RelHintsPropagator</a>&nbsp;handler)</code>
<div class="block">Registers that a rule has produced an equivalent relational expression.</div>
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<h3>从类继承的方法&nbsp;org.apache.calcite.plan.<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a></h3>
<code><a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#builder--">builder</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#getChildRels-org.apache.calcite.rel.RelNode-">getChildRels</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#getMetadataQuery--">getMetadataQuery</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#getOperand0--">getOperand0</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#getParents--">getParents</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#getPlanner--">getPlanner</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#getRelList--">getRelList</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#getRels--">getRels</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#getRule--">getRule</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#isRuleExcluded--">isRuleExcluded</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#rel-int-">rel</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#setChildRels-org.apache.calcite.rel.RelNode-java.util.List-">setChildRels</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#transformTo-org.apache.calcite.rel.RelNode-">transformTo</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#transformTo-org.apache.calcite.rel.RelNode-java.util.Map-">transformTo</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#transformTo-org.apache.calcite.rel.RelNode-org.apache.calcite.plan.RelHintsPropagator-">transformTo</a></code></li>
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<h3>方法详细资料</h3>
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<h4>transformTo</h4>
<pre>public&nbsp;void&nbsp;transformTo(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="java.util中的类或接口">Map</a>&lt;<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>,<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&gt;&nbsp;equiv,
<a href="../../../../../org/apache/calcite/plan/RelHintsPropagator.html" title="org.apache.calcite.plan中的接口">RelHintsPropagator</a>&nbsp;handler)</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#transformTo-org.apache.calcite.rel.RelNode-java.util.Map-org.apache.calcite.plan.RelHintsPropagator-">RelOptRuleCall</a></code></span></div>
<div class="block">Registers that a rule has produced an equivalent relational expression.
<p>Called by the rule whenever it finds a match. The implementation of
this method guarantees that the original relational expression (that is,
<code>this.rels[0]</code>) has its traits propagated to the new
relational expression (<code>rel</code>) and its unregistered children.
Any trait not specifically set in the RelTraitSet returned by <code>
rel.getTraits()</code> will be copied from <code>
this.rels[0].getTraitSet()</code>.
<p>The hints of the root relational expression of
the rule call(<code>this.rels[0]</code>)
are copied to the new relational expression(<code>rel</code>)
with specified handler <code>handler</code>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">指定者:</span></dt>
<dd><code><a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html#transformTo-org.apache.calcite.rel.RelNode-java.util.Map-org.apache.calcite.plan.RelHintsPropagator-">transformTo</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="org.apache.calcite.plan中的类">RelOptRuleCall</a></code></dd>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>rel</code> - Relational expression equivalent to the root relational
expression of the rule call, <code>call.rels(0)</code></dd>
<dd><code>equiv</code> - Map of other equivalences</dd>
<dd><code>handler</code> - Handler to customize the relational expression that registers
into the planner, the first parameter is the root relational expression
and the second parameter is the new relational expression</dd>
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