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<div class="subTitle">org.apache.calcite.plan</div>
<h2 title="接口 RelOptPlanner" class="title">接口 RelOptPlanner</h2>
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<dt>所有已知实现类:</dt>
<dd><a href="../../../../org/apache/calcite/plan/AbstractRelOptPlanner.html" title="org.apache.calcite.plan中的类">AbstractRelOptPlanner</a>, <a href="../../../../org/apache/calcite/plan/hep/HepPlanner.html" title="org.apache.calcite.plan.hep中的类">HepPlanner</a>, <a href="../../../../org/apache/calcite/plan/volcano/VolcanoPlanner.html" title="org.apache.calcite.plan.volcano中的类">VolcanoPlanner</a></dd>
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<pre>public interface <span class="typeNameLabel">RelOptPlanner</span></pre>
<div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
expression into a semantically equivalent relational expression, according to
a given set of rules and a cost model.</div>
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<th class="colFirst" scope="col">限定符和类型</th>
<th class="colLast" scope="col">接口和说明</th>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.CannotPlanException.html" title="org.apache.calcite.plan中的类">RelOptPlanner.CannotPlanException</a></span></code>
<div class="block">Thrown by <a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#findBestExp--"><code>findBestExp()</code></a>.</div>
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<td class="colFirst"><code>static interface&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.Executor.html" title="org.apache.calcite.plan中的接口">RelOptPlanner.Executor</a></span></code>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/calcite/rex/RexExecutor.html" title="org.apache.calcite.rex中的接口"><code>RexExecutor</code></a></span></div>
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<td class="colFirst"><code>static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#LOGGER">LOGGER</a></span></code>&nbsp;</td>
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<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="t3" class="tableTab"><span><a href="javascript:show(4);">抽象方法</a></span><span class="tabEnd">&nbsp;</span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">已过时的方法</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#addLattice-org.apache.calcite.plan.RelOptLattice-">addLattice</a></span>(<a href="../../../../org/apache/calcite/plan/RelOptLattice.html" title="org.apache.calcite.plan中的类">RelOptLattice</a>&nbsp;lattice)</code>
<div class="block">Defines a lattice.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#addListener-org.apache.calcite.plan.RelOptListener-">addListener</a></span>(<a href="../../../../org/apache/calcite/plan/RelOptListener.html" title="org.apache.calcite.plan中的接口">RelOptListener</a>&nbsp;newListener)</code>
<div class="block">Adds a listener to this planner.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#addMaterialization-org.apache.calcite.plan.RelOptMaterialization-">addMaterialization</a></span>(<a href="../../../../org/apache/calcite/plan/RelOptMaterialization.html" title="org.apache.calcite.plan中的类">RelOptMaterialization</a>&nbsp;materialization)</code>
<div class="block">Defines a pair of relational expressions that are equivalent.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#addRelTraitDef-org.apache.calcite.plan.RelTraitDef-">addRelTraitDef</a></span>(<a href="../../../../org/apache/calcite/plan/RelTraitDef.html" title="org.apache.calcite.plan中的类">RelTraitDef</a>&nbsp;relTraitDef)</code>
<div class="block">Registers a rel trait definition.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#addRule-org.apache.calcite.plan.RelOptRule-">addRule</a></span>(<a href="../../../../org/apache/calcite/plan/RelOptRule.html" title="org.apache.calcite.plan中的类">RelOptRule</a>&nbsp;rule)</code>
<div class="block">Registers a rule.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><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/plan/RelOptPlanner.html#changeTraits-org.apache.calcite.rel.RelNode-org.apache.calcite.plan.RelTraitSet-">changeTraits</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="../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a>&nbsp;toTraits)</code>
<div class="block">Changes a relational expression to an equivalent one with a different set
of traits.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html" title="org.apache.calcite.plan中的接口">RelOptPlanner</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#chooseDelegate--">chooseDelegate</a></span>()</code>
<div class="block">Negotiates an appropriate planner to deal with distributed queries.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#clear--">clear</a></span>()</code>
<div class="block">Removes all internal state, including all registered rules,
materialized views, and lattices.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#clearRelTraitDefs--">clearRelTraitDefs</a></span>()</code>
<div class="block">Clear all the registered RelTraitDef.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#emptyTraitSet--">emptyTraitSet</a></span>()</code>
<div class="block">Creates an empty trait set.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code><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/plan/RelOptPlanner.html#ensureRegistered-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.RelNode-">ensureRegistered</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="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;equivRel)</code>
<div class="block">Registers a relational expression if it is not already registered.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code><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/plan/RelOptPlanner.html#findBestExp--">findBestExp</a></span>()</code>
<div class="block">Finds the most efficient expression to implement this query.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/plan/Context.html" title="org.apache.calcite.plan中的接口">Context</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getContext--">getContext</a></span>()</code>
<div class="block">Provides the Context created when this planner was constructed.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/plan/RelOptCost.html" title="org.apache.calcite.plan中的接口">RelOptCost</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getCost-org.apache.calcite.rel.RelNode-">getCost</a></span>(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)</code>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getCost-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.metadata.RelMetadataQuery-"><code>getCost(RelNode, RelMetadataQuery)</code></a>
or, better, call <a href="../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html#getCumulativeCost-org.apache.calcite.rel.RelNode-"><code>RelMetadataQuery.getCumulativeCost(RelNode)</code></a>.</span></div>
</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/plan/RelOptCost.html" title="org.apache.calcite.plan中的接口">RelOptCost</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getCost-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.metadata.RelMetadataQuery-">getCost</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="../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a>&nbsp;mq)</code>
<div class="block">Computes the cost of a RelNode.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/plan/RelOptCostFactory.html" title="org.apache.calcite.plan中的接口">RelOptCostFactory</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getCostFactory--">getCostFactory</a></span>()</code>
<div class="block">Returns the factory that creates
<a href="../../../../org/apache/calcite/plan/RelOptCost.html" title="org.apache.calcite.plan中的接口"><code>RelOptCost</code></a>s.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/rex/RexExecutor.html" title="org.apache.calcite.rex中的接口">RexExecutor</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getExecutor--">getExecutor</a></span>()</code>
<div class="block">Returns the executor used to evaluate constant expressions.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/plan/RelOptLattice.html" title="org.apache.calcite.plan中的类">RelOptLattice</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getLattice-org.apache.calcite.plan.RelOptTable-">getLattice</a></span>(<a href="../../../../org/apache/calcite/plan/RelOptTable.html" title="org.apache.calcite.plan中的接口">RelOptTable</a>&nbsp;table)</code>
<div class="block">Retrieves a lattice, given its star table.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a>&lt;<a href="../../../../org/apache/calcite/plan/RelOptMaterialization.html" title="org.apache.calcite.plan中的类">RelOptMaterialization</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getMaterializations--">getMaterializations</a></span>()</code>
<div class="block">Returns the materializations that have been registered with the planner.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getRelMetadataTimestamp-org.apache.calcite.rel.RelNode-">getRelMetadataTimestamp</a></span>(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)</code>
<div class="block">Gets a timestamp for a given rel's metadata.</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a>&lt;<a href="../../../../org/apache/calcite/plan/RelTraitDef.html" title="org.apache.calcite.plan中的类">RelTraitDef</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getRelTraitDefs--">getRelTraitDefs</a></span>()</code>
<div class="block">Returns the list of active trait types.</div>
</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code><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/plan/RelOptPlanner.html#getRoot--">getRoot</a></span>()</code>
<div class="block">Returns the root node of this query.</div>
</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a>&lt;<a href="../../../../org/apache/calcite/plan/RelOptRule.html" title="org.apache.calcite.plan中的类">RelOptRule</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getRules--">getRules</a></span>()</code>
<div class="block">Returns the list of all registered rules.</div>
</td>
</tr>
<tr id="i23" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#isRegistered-org.apache.calcite.rel.RelNode-">isRegistered</a></span>(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)</code>
<div class="block">Determines whether a relational expression has been registered.</div>
</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#onCopy-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.RelNode-">onCopy</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="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;newRel)</code>
<div class="block">Called when a relational expression is copied to a similar expression.</div>
</td>
</tr>
<tr id="i25" class="rowColor">
<td class="colFirst"><code><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/plan/RelOptPlanner.html#register-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.RelNode-">register</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="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;equivRel)</code>
<div class="block">Registers a relational expression in the expression bank.</div>
</td>
</tr>
<tr id="i26" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#registerClass-org.apache.calcite.rel.RelNode-">registerClass</a></span>(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;node)</code>
<div class="block">Registers a class of RelNode.</div>
</td>
</tr>
<tr id="i27" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#registerMetadataProviders-java.util.List-">registerMetadataProviders</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a>&lt;<a href="../../../../org/apache/calcite/rel/metadata/RelMetadataProvider.html" title="org.apache.calcite.rel.metadata中的接口">RelMetadataProvider</a>&gt;&nbsp;list)</code>
<div class="block">Gives this planner a chance to register one or more
<a href="../../../../org/apache/calcite/rel/metadata/RelMetadataProvider.html" title="org.apache.calcite.rel.metadata中的接口"><code>RelMetadataProvider</code></a>s in the chain which will be used to answer
metadata queries.</div>
</td>
</tr>
<tr id="i28" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#registerSchema-org.apache.calcite.plan.RelOptSchema-">registerSchema</a></span>(<a href="../../../../org/apache/calcite/plan/RelOptSchema.html" title="org.apache.calcite.plan中的接口">RelOptSchema</a>&nbsp;schema)</code>
<div class="block">Tells this planner that a schema exists.</div>
</td>
</tr>
<tr id="i29" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#removeRule-org.apache.calcite.plan.RelOptRule-">removeRule</a></span>(<a href="../../../../org/apache/calcite/plan/RelOptRule.html" title="org.apache.calcite.plan中的类">RelOptRule</a>&nbsp;rule)</code>
<div class="block">Removes a rule.</div>
</td>
</tr>
<tr id="i30" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#setCancelFlag-org.apache.calcite.util.CancelFlag-">setCancelFlag</a></span>(<a href="../../../../org/apache/calcite/util/CancelFlag.html" title="org.apache.calcite.util中的类">CancelFlag</a>&nbsp;cancelFlag)</code>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;
<div class="block"><span class="deprecationComment">Previously, this method installed the cancellation-checking
flag for this planner, but is now deprecated. Now, you should add a
<a href="../../../../org/apache/calcite/util/CancelFlag.html" title="org.apache.calcite.util中的类"><code>CancelFlag</code></a> to the <a href="../../../../org/apache/calcite/plan/Context.html" title="org.apache.calcite.plan中的接口"><code>Context</code></a> passed to the constructor.</span></div>
</div>
</td>
</tr>
<tr id="i31" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#setExecutor-org.apache.calcite.rex.RexExecutor-">setExecutor</a></span>(<a href="../../../../org/apache/calcite/rex/RexExecutor.html" title="org.apache.calcite.rex中的接口">RexExecutor</a>&nbsp;executor)</code>
<div class="block">Sets the object that can execute scalar expressions.</div>
</td>
</tr>
<tr id="i32" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#setImportance-org.apache.calcite.rel.RelNode-double-">setImportance</a></span>(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel,
double&nbsp;importance)</code>
<div class="block">Sets the importance of a relational expression.</div>
</td>
</tr>
<tr id="i33" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#setRoot-org.apache.calcite.rel.RelNode-">setRoot</a></span>(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)</code>
<div class="block">Sets the root node of this query.</div>
</td>
</tr>
<tr id="i34" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#setRuleDescExclusionFilter-java.util.regex.Pattern-">setRuleDescExclusionFilter</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html?is-external=true" title="java.util.regex中的类或接口">Pattern</a>&nbsp;exclusionFilter)</code>
<div class="block">Sets the exclusion filter to use for this planner.</div>
</td>
</tr>
</table>
</li>
</ul>
</li>
</ul>
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<h3>字段详细资料</h3>
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<h4>LOGGER</h4>
<pre>static final&nbsp;org.slf4j.Logger LOGGER</pre>
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<h3>方法详细资料</h3>
<a name="setRoot-org.apache.calcite.rel.RelNode-">
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<pre>void&nbsp;setRoot(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)</pre>
<div class="block">Sets the root node of this query.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>rel</code> - Relational expression</dd>
</dl>
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<pre><a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;getRoot()</pre>
<div class="block">Returns the root node of this query.</div>
<dl>
<dt><span class="returnLabel">返回:</span></dt>
<dd>Root node</dd>
</dl>
</li>
</ul>
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<h4>addRelTraitDef</h4>
<pre>boolean&nbsp;addRelTraitDef(<a href="../../../../org/apache/calcite/plan/RelTraitDef.html" title="org.apache.calcite.plan中的类">RelTraitDef</a>&nbsp;relTraitDef)</pre>
<div class="block">Registers a rel trait definition. If the <a href="../../../../org/apache/calcite/plan/RelTraitDef.html" title="org.apache.calcite.plan中的类"><code>RelTraitDef</code></a> has already
been registered, does nothing.</div>
<dl>
<dt><span class="returnLabel">返回:</span></dt>
<dd>whether the RelTraitDef was added, as per
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true#add-E-" title="java.util中的类或接口"><code>Collection.add(E)</code></a></dd>
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<pre>void&nbsp;clearRelTraitDefs()</pre>
<div class="block">Clear all the registered RelTraitDef.</div>
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<h4>getRelTraitDefs</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a>&lt;<a href="../../../../org/apache/calcite/plan/RelTraitDef.html" title="org.apache.calcite.plan中的类">RelTraitDef</a>&gt;&nbsp;getRelTraitDefs()</pre>
<div class="block">Returns the list of active trait types.</div>
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<h4>clear</h4>
<pre>void&nbsp;clear()</pre>
<div class="block">Removes all internal state, including all registered rules,
materialized views, and lattices.</div>
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<h4>getRules</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a>&lt;<a href="../../../../org/apache/calcite/plan/RelOptRule.html" title="org.apache.calcite.plan中的类">RelOptRule</a>&gt;&nbsp;getRules()</pre>
<div class="block">Returns the list of all registered rules.</div>
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</ul>
<a name="addRule-org.apache.calcite.plan.RelOptRule-">
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<pre>boolean&nbsp;addRule(<a href="../../../../org/apache/calcite/plan/RelOptRule.html" title="org.apache.calcite.plan中的类">RelOptRule</a>&nbsp;rule)</pre>
<div class="block">Registers a rule.
<p>If the rule has already been registered, does nothing.
This method determines if the given rule is a
<a href="../../../../org/apache/calcite/rel/convert/ConverterRule.html" title="org.apache.calcite.rel.convert中的类"><code>ConverterRule</code></a> and pass the
ConverterRule to all
<a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#addRelTraitDef-org.apache.calcite.plan.RelTraitDef-"><code>registered</code></a> RelTraitDef
instances.</div>
<dl>
<dt><span class="returnLabel">返回:</span></dt>
<dd>whether the rule was added, as per
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true#add-E-" title="java.util中的类或接口"><code>Collection.add(E)</code></a></dd>
</dl>
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</ul>
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<h4>removeRule</h4>
<pre>boolean&nbsp;removeRule(<a href="../../../../org/apache/calcite/plan/RelOptRule.html" title="org.apache.calcite.plan中的类">RelOptRule</a>&nbsp;rule)</pre>
<div class="block">Removes a rule.</div>
<dl>
<dt><span class="returnLabel">返回:</span></dt>
<dd>true if the rule was present, as per
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true#remove-java.lang.Object-" title="java.util中的类或接口"><code>Collection.remove(Object)</code></a></dd>
</dl>
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<h4>getContext</h4>
<pre><a href="../../../../org/apache/calcite/plan/Context.html" title="org.apache.calcite.plan中的接口">Context</a>&nbsp;getContext()</pre>
<div class="block">Provides the Context created when this planner was constructed.</div>
<dl>
<dt><span class="returnLabel">返回:</span></dt>
<dd>Never null; either an externally defined context, or a dummy
context that returns null for each requested interface</dd>
</dl>
</li>
</ul>
<a name="setRuleDescExclusionFilter-java.util.regex.Pattern-">
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<h4>setRuleDescExclusionFilter</h4>
<pre>void&nbsp;setRuleDescExclusionFilter(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html?is-external=true" title="java.util.regex中的类或接口">Pattern</a>&nbsp;exclusionFilter)</pre>
<div class="block">Sets the exclusion filter to use for this planner. Rules which match the
given pattern will not be fired regardless of whether or when they are
added to the planner.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>exclusionFilter</code> - pattern to match for exclusion; null to disable
filtering</dd>
</dl>
</li>
</ul>
<a name="setCancelFlag-org.apache.calcite.util.CancelFlag-">
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<h4>setCancelFlag</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>
void&nbsp;setCancelFlag(<a href="../../../../org/apache/calcite/util/CancelFlag.html" title="org.apache.calcite.util中的类">CancelFlag</a>&nbsp;cancelFlag)</pre>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;<span class="deprecationComment">Previously, this method installed the cancellation-checking
flag for this planner, but is now deprecated. Now, you should add a
<a href="../../../../org/apache/calcite/util/CancelFlag.html" title="org.apache.calcite.util中的类"><code>CancelFlag</code></a> to the <a href="../../../../org/apache/calcite/plan/Context.html" title="org.apache.calcite.plan中的接口"><code>Context</code></a> passed to the constructor.</span></div>
<div class="block">Does nothing.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>cancelFlag</code> - flag which the planner should periodically check</dd>
</dl>
</li>
</ul>
<a name="changeTraits-org.apache.calcite.rel.RelNode-org.apache.calcite.plan.RelTraitSet-">
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<h4>changeTraits</h4>
<pre><a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;changeTraits(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel,
<a href="../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a>&nbsp;toTraits)</pre>
<div class="block">Changes a relational expression to an equivalent one with a different set
of traits.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>rel</code> - Relational expression (may or may not have been registered; must
not have the desired traits)</dd>
<dd><code>toTraits</code> - Trait set to convert the relational expression to</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>Relational expression with desired traits. Never null, but may be
abstract</dd>
</dl>
</li>
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<a name="chooseDelegate--">
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<h4>chooseDelegate</h4>
<pre><a href="../../../../org/apache/calcite/plan/RelOptPlanner.html" title="org.apache.calcite.plan中的接口">RelOptPlanner</a>&nbsp;chooseDelegate()</pre>
<div class="block">Negotiates an appropriate planner to deal with distributed queries. The
idea is that the schemas decide among themselves which has the most
knowledge. Right now, the local planner retains control.</div>
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</ul>
<a name="addMaterialization-org.apache.calcite.plan.RelOptMaterialization-">
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<h4>addMaterialization</h4>
<pre>void&nbsp;addMaterialization(<a href="../../../../org/apache/calcite/plan/RelOptMaterialization.html" title="org.apache.calcite.plan中的类">RelOptMaterialization</a>&nbsp;materialization)</pre>
<div class="block">Defines a pair of relational expressions that are equivalent.
<p>Typically <code>tableRel</code> is a
<a href="../../../../org/apache/calcite/rel/logical/LogicalTableScan.html" title="org.apache.calcite.rel.logical中的类"><code>LogicalTableScan</code></a> representing a
table that is a materialized view and <code>queryRel</code> is the SQL
expression that populates that view. The intention is that
<code>tableRel</code> is cheaper to evaluate and therefore if the query being
optimized uses (or can be rewritten to use) <code>queryRel</code> as a
sub-expression then it can be optimized by using <code>tableRel</code>
instead.</p></div>
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<a name="getMaterializations--">
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<h4>getMaterializations</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a>&lt;<a href="../../../../org/apache/calcite/plan/RelOptMaterialization.html" title="org.apache.calcite.plan中的类">RelOptMaterialization</a>&gt;&nbsp;getMaterializations()</pre>
<div class="block">Returns the materializations that have been registered with the planner.</div>
</li>
</ul>
<a name="addLattice-org.apache.calcite.plan.RelOptLattice-">
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<h4>addLattice</h4>
<pre>void&nbsp;addLattice(<a href="../../../../org/apache/calcite/plan/RelOptLattice.html" title="org.apache.calcite.plan中的类">RelOptLattice</a>&nbsp;lattice)</pre>
<div class="block">Defines a lattice.
<p>The lattice may have materializations; it is not necessary to call
<a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#addMaterialization-org.apache.calcite.plan.RelOptMaterialization-"><code>addMaterialization(org.apache.calcite.plan.RelOptMaterialization)</code></a> for these; they are registered implicitly.</div>
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<a name="getLattice-org.apache.calcite.plan.RelOptTable-">
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<h4>getLattice</h4>
<pre><a href="../../../../org/apache/calcite/plan/RelOptLattice.html" title="org.apache.calcite.plan中的类">RelOptLattice</a>&nbsp;getLattice(<a href="../../../../org/apache/calcite/plan/RelOptTable.html" title="org.apache.calcite.plan中的接口">RelOptTable</a>&nbsp;table)</pre>
<div class="block">Retrieves a lattice, given its star table.</div>
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<a name="findBestExp--">
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<h4>findBestExp</h4>
<pre><a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;findBestExp()</pre>
<div class="block">Finds the most efficient expression to implement this query.</div>
<dl>
<dt><span class="throwsLabel">抛出:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/plan/RelOptPlanner.CannotPlanException.html" title="org.apache.calcite.plan中的类">RelOptPlanner.CannotPlanException</a></code> - if cannot find a plan</dd>
</dl>
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<h4>getCostFactory</h4>
<pre><a href="../../../../org/apache/calcite/plan/RelOptCostFactory.html" title="org.apache.calcite.plan中的接口">RelOptCostFactory</a>&nbsp;getCostFactory()</pre>
<div class="block">Returns the factory that creates
<a href="../../../../org/apache/calcite/plan/RelOptCost.html" title="org.apache.calcite.plan中的接口"><code>RelOptCost</code></a>s.</div>
</li>
</ul>
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<pre><a href="../../../../org/apache/calcite/plan/RelOptCost.html" title="org.apache.calcite.plan中的接口">RelOptCost</a>&nbsp;getCost(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel,
<a href="../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a>&nbsp;mq)</pre>
<div class="block">Computes the cost of a RelNode. In most cases, this just dispatches to
<a href="../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html#getCumulativeCost-org.apache.calcite.rel.RelNode-"><code>RelMetadataQuery.getCumulativeCost(org.apache.calcite.rel.RelNode)</code></a>.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>rel</code> - Relational expression of interest</dd>
<dd><code>mq</code> - Metadata query</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>estimated cost</dd>
</dl>
</li>
</ul>
<a name="getCost-org.apache.calcite.rel.RelNode-">
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<h4>getCost</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>
<a href="../../../../org/apache/calcite/plan/RelOptCost.html" title="org.apache.calcite.plan中的接口">RelOptCost</a>&nbsp;getCost(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)</pre>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#getCost-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.metadata.RelMetadataQuery-"><code>getCost(RelNode, RelMetadataQuery)</code></a>
or, better, call <a href="../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html#getCumulativeCost-org.apache.calcite.rel.RelNode-"><code>RelMetadataQuery.getCumulativeCost(RelNode)</code></a>.</span></div>
</li>
</ul>
<a name="register-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.RelNode-">
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<h4>register</h4>
<pre><a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;register(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel,
<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;equivRel)</pre>
<div class="block">Registers a relational expression in the expression bank.
<p>After it has been registered, you may not modify it.
<p>The expression must not already have been registered. If you are not
sure whether it has been registered, call
<a href="../../../../org/apache/calcite/plan/RelOptPlanner.html#ensureRegistered-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.RelNode-"><code>ensureRegistered(RelNode, RelNode)</code></a>.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>rel</code> - Relational expression to register (must not already be
registered)</dd>
<dd><code>equivRel</code> - Relational expression it is equivalent to (may be null)</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>the same expression, or an equivalent existing expression</dd>
</dl>
</li>
</ul>
<a name="ensureRegistered-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.RelNode-">
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<h4>ensureRegistered</h4>
<pre><a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;ensureRegistered(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel,
<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;equivRel)</pre>
<div class="block">Registers a relational expression if it is not already registered.
<p>If <code>equivRel</code> is specified, <code>rel</code> is placed in the same
equivalence set. It is OK if <code>equivRel</code> has different traits;
<code>rel</code> will end up in a different subset of the same set.
<p>It is OK if <code>rel</code> is a subset.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>rel</code> - Relational expression to register</dd>
<dd><code>equivRel</code> - Relational expression it is equivalent to (may be null)</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>Registered relational expression</dd>
</dl>
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<pre>boolean&nbsp;isRegistered(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)</pre>
<div class="block">Determines whether a relational expression has been registered.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>rel</code> - expression to test</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>whether rel has been registered</dd>
</dl>
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</ul>
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<h4>registerSchema</h4>
<pre>void&nbsp;registerSchema(<a href="../../../../org/apache/calcite/plan/RelOptSchema.html" title="org.apache.calcite.plan中的接口">RelOptSchema</a>&nbsp;schema)</pre>
<div class="block">Tells this planner that a schema exists. This is the schema's chance to
tell the planner about all of the special transformation rules.</div>
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<a name="addListener-org.apache.calcite.plan.RelOptListener-">
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<h4>addListener</h4>
<pre>void&nbsp;addListener(<a href="../../../../org/apache/calcite/plan/RelOptListener.html" title="org.apache.calcite.plan中的接口">RelOptListener</a>&nbsp;newListener)</pre>
<div class="block">Adds a listener to this planner.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>newListener</code> - new listener to be notified of events</dd>
</dl>
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</ul>
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<h4>registerMetadataProviders</h4>
<pre>void&nbsp;registerMetadataProviders(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a>&lt;<a href="../../../../org/apache/calcite/rel/metadata/RelMetadataProvider.html" title="org.apache.calcite.rel.metadata中的接口">RelMetadataProvider</a>&gt;&nbsp;list)</pre>
<div class="block">Gives this planner a chance to register one or more
<a href="../../../../org/apache/calcite/rel/metadata/RelMetadataProvider.html" title="org.apache.calcite.rel.metadata中的接口"><code>RelMetadataProvider</code></a>s in the chain which will be used to answer
metadata queries.
<p>Planners which use their own relational expressions internally
to represent concepts such as equivalence classes will generally need to
supply corresponding metadata providers.</p></div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>list</code> - receives planner's custom providers, if any</dd>
</dl>
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<h4>getRelMetadataTimestamp</h4>
<pre>long&nbsp;getRelMetadataTimestamp(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)</pre>
<div class="block">Gets a timestamp for a given rel's metadata. This timestamp is used by
<a href="../../../../org/apache/calcite/rel/metadata/CachingRelMetadataProvider.html" title="org.apache.calcite.rel.metadata中的类"><code>CachingRelMetadataProvider</code></a> to decide whether cached metadata has
gone stale.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>rel</code> - rel of interest</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>timestamp of last change which might affect metadata derivation</dd>
</dl>
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<h4>setImportance</h4>
<pre>void&nbsp;setImportance(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel,
double&nbsp;importance)</pre>
<div class="block">Sets the importance of a relational expression.
<p>An important use of this method is when a <a href="../../../../org/apache/calcite/plan/RelOptRule.html" title="org.apache.calcite.plan中的类"><code>RelOptRule</code></a> has
created a relational expression which is indisputably better than the
original relational expression. The rule set the original relational
expression's importance to zero, to reduce the search space. Pending rule
calls are cancelled, and future rules will not fire.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>rel</code> - Relational expression</dd>
<dd><code>importance</code> - Importance</dd>
</dl>
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<h4>registerClass</h4>
<pre>void&nbsp;registerClass(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;node)</pre>
<div class="block">Registers a class of RelNode. If this class of RelNode has been seen
before, does nothing.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>node</code> - Relational expression</dd>
</dl>
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<h4>emptyTraitSet</h4>
<pre><a href="../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a>&nbsp;emptyTraitSet()</pre>
<div class="block">Creates an empty trait set. It contains all registered traits, and the
default values of any traits that have them.
<p>The empty trait set acts as the prototype (a kind of factory) for all
subsequently created trait sets.</p></div>
<dl>
<dt><span class="returnLabel">返回:</span></dt>
<dd>Empty trait set</dd>
</dl>
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</ul>
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<pre>void&nbsp;setExecutor(<a href="../../../../org/apache/calcite/rex/RexExecutor.html" title="org.apache.calcite.rex中的接口">RexExecutor</a>&nbsp;executor)</pre>
<div class="block">Sets the object that can execute scalar expressions.</div>
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<h4>getExecutor</h4>
<pre><a href="../../../../org/apache/calcite/rex/RexExecutor.html" title="org.apache.calcite.rex中的接口">RexExecutor</a>&nbsp;getExecutor()</pre>
<div class="block">Returns the executor used to evaluate constant expressions.</div>
</li>
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<h4>onCopy</h4>
<pre>void&nbsp;onCopy(<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel,
<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;newRel)</pre>
<div class="block">Called when a relational expression is copied to a similar expression.</div>
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