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| <div class="subTitle">org.apache.calcite.plan</div> |
| <h2 title="类 SubstitutionVisitor.UnifyRule" class="title">类 SubstitutionVisitor.UnifyRule</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.plan.SubstitutionVisitor.UnifyRule</li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>直接已知子类:</dt> |
| <dd><a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.AbstractUnifyRule.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.AbstractUnifyRule</a></dd> |
| </dl> |
| <dl> |
| <dt>封闭类:</dt> |
| <dd><a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>protected abstract static class <span class="typeNameLabel">SubstitutionVisitor.UnifyRule</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></pre> |
| <div class="block">Rule that attempts to match a query relational expression |
| against a target relational expression. |
| |
| <p>The rule declares the query and target types; this allows the |
| engine to fire only a few rules in a given context.</p></div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
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| <!-- =========== FIELD SUMMARY =========== --> |
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| <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>protected <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.Operand.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.Operand</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyRule.html#queryOperand">queryOperand</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyRule.html#slotCount">slotCount</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.Operand.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.Operand</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyRule.html#targetOperand">targetOperand</a></span></code> </td> |
| </tr> |
| </table> |
| </li> |
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| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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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="colFirst" scope="col">限定符</th> |
| <th class="colLast" scope="col">构造器和说明</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyRule.html#UnifyRule-int-org.apache.calcite.plan.SubstitutionVisitor.Operand-org.apache.calcite.plan.SubstitutionVisitor.Operand-">UnifyRule</a></span>(int slotCount, |
| <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.Operand.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.Operand</a> queryOperand, |
| <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.Operand.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.Operand</a> targetOperand)</code> </td> |
| </tr> |
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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="t3" class="tableTab"><span><a href="javascript:show(4);">抽象方法</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 abstract <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyResult.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.UnifyResult</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyRule.html#apply-org.apache.calcite.plan.SubstitutionVisitor.UnifyRuleCall-">apply</a></span>(<a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyRuleCall.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.UnifyRuleCall</a> call)</code> |
| <div class="block">Applies this rule to a particular node in a query.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected <E> com.google.common.collect.ImmutableList<E></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyRule.html#copy-E:A-int-">copy</a></span>(E[] slots, |
| int slotCount)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyRuleCall.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.UnifyRuleCall</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyRule.html#match-org.apache.calcite.plan.SubstitutionVisitor-org.apache.calcite.rel.mutable.MutableRel-org.apache.calcite.rel.mutable.MutableRel-">match</a></span>(<a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor</a> visitor, |
| <a href="../../../../org/apache/calcite/rel/mutable/MutableRel.html" title="org.apache.calcite.rel.mutable中的类">MutableRel</a> query, |
| <a href="../../../../org/apache/calcite/rel/mutable/MutableRel.html" title="org.apache.calcite.rel.mutable中的类">MutableRel</a> target)</code> </td> |
| </tr> |
| </table> |
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| <!-- --> |
| </a> |
| <h3>从类继承的方法 java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></h3> |
| <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#equals-java.lang.Object-" title="java.lang中的类或接口">equals</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#hashCode--" title="java.lang中的类或接口">hashCode</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#toString--" title="java.lang中的类或接口">toString</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> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.detail"> |
| <!-- --> |
| </a> |
| <h3>字段详细资料</h3> |
| <a name="slotCount"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>slotCount</h4> |
| <pre>protected final int slotCount</pre> |
| </li> |
| </ul> |
| <a name="queryOperand"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>queryOperand</h4> |
| <pre>protected final <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.Operand.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.Operand</a> queryOperand</pre> |
| </li> |
| </ul> |
| <a name="targetOperand"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>targetOperand</h4> |
| <pre>protected final <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.Operand.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.Operand</a> targetOperand</pre> |
| </li> |
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| <li class="blockList"><a name="constructor.detail"> |
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| </a> |
| <h3>构造器详细资料</h3> |
| <a name="UnifyRule-int-org.apache.calcite.plan.SubstitutionVisitor.Operand-org.apache.calcite.plan.SubstitutionVisitor.Operand-"> |
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| <h4>UnifyRule</h4> |
| <pre>protected UnifyRule(int slotCount, |
| <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.Operand.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.Operand</a> queryOperand, |
| <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.Operand.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.Operand</a> targetOperand)</pre> |
| </li> |
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| <h3>方法详细资料</h3> |
| <a name="apply-org.apache.calcite.plan.SubstitutionVisitor.UnifyRuleCall-"> |
| <!-- --> |
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| <h4>apply</h4> |
| <pre>protected abstract <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyResult.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.UnifyResult</a> apply(<a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyRuleCall.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.UnifyRuleCall</a> call)</pre> |
| <div class="block"><p>Applies this rule to a particular node in a query. The goal is |
| to convert <code>query</code> into <code>target</code>. Before the rule is |
| invoked, Calcite has made sure that query's children are equivalent |
| to target's children. |
| |
| <p>There are 3 possible outcomes:</p> |
| |
| <ul> |
| |
| <li><code>query</code> already exactly matches <code>target</code>; returns |
| <code>target</code></li> |
| |
| <li><code>query</code> is sufficiently close to a match for |
| <code>target</code>; returns <code>target</code></li> |
| |
| <li><code>query</code> cannot be made to match <code>target</code>; returns |
| null</li> |
| |
| </ul> |
| |
| <p>REVIEW: Is possible that we match query PLUS one or more of its |
| ancestors?</p></div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>call</code> - Input parameters</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="match-org.apache.calcite.plan.SubstitutionVisitor-org.apache.calcite.rel.mutable.MutableRel-org.apache.calcite.rel.mutable.MutableRel-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>match</h4> |
| <pre>protected <a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.UnifyRuleCall.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor.UnifyRuleCall</a> match(<a href="../../../../org/apache/calcite/plan/SubstitutionVisitor.html" title="org.apache.calcite.plan中的类">SubstitutionVisitor</a> visitor, |
| <a href="../../../../org/apache/calcite/rel/mutable/MutableRel.html" title="org.apache.calcite.rel.mutable中的类">MutableRel</a> query, |
| <a href="../../../../org/apache/calcite/rel/mutable/MutableRel.html" title="org.apache.calcite.rel.mutable中的类">MutableRel</a> target)</pre> |
| </li> |
| </ul> |
| <a name="copy-java.lang.Object:A-int-"> |
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| <h4>copy</h4> |
| <pre>protected <E> com.google.common.collect.ImmutableList<E> copy(E[] slots, |
| int slotCount)</pre> |
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| <li>嵌套 | </li> |
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