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| <h2 title="枚举 HepMatchOrder" class="title">枚举 HepMatchOrder</h2> |
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| <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><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="java.lang中的类或接口">java.lang.Enum</a><<a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html" title="org.apache.calcite.plan.hep中的枚举">HepMatchOrder</a>></li> |
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| <li>org.apache.calcite.plan.hep.HepMatchOrder</li> |
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| <pre>public enum <span class="typeNameLabel">HepMatchOrder</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="java.lang中的类或接口">Enum</a><<a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html" title="org.apache.calcite.plan.hep中的枚举">HepMatchOrder</a>></pre> |
| <div class="block">HepMatchOrder specifies the order of graph traversal when looking for rule |
| matches.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
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| <!-- =========== ENUM CONSTANT SUMMARY =========== --> |
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| </a> |
| <h3>枚举常量概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="枚举常量概要表, 列表枚举常量和解释"> |
| <caption><span>枚举常量</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">枚举常量和说明</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html#ARBITRARY">ARBITRARY</a></span></code> |
| <div class="block">Match in arbitrary order.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html#BOTTOM_UP">BOTTOM_UP</a></span></code> |
| <div class="block">Match from leaves up.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html#DEPTH_FIRST">DEPTH_FIRST</a></span></code> |
| <div class="block">Match in depth-first order.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html#TOP_DOWN">TOP_DOWN</a></span></code> |
| <div class="block">Match from root down.</div> |
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| <caption><span id="t0" class="activeTableTab"><span>所有方法</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">静态方法</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>static <a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html" title="org.apache.calcite.plan.hep中的枚举">HepMatchOrder</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html#valueOf-java.lang.String-">valueOf</a></span>(<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> name)</code> |
| <div class="block">返回带有指定名称的该类型的枚举常量。</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html" title="org.apache.calcite.plan.hep中的枚举">HepMatchOrder</a>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html#values--">values</a></span>()</code> |
| <div class="block">按照声明该枚举类型的常量的顺序, 返回 |
| 包含这些常量的数组。</div> |
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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.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/Enum.html?is-external=true#compareTo-E-" title="java.lang中的类或接口">compareTo</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.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/Enum.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/Enum.html?is-external=true#getDeclaringClass--" title="java.lang中的类或接口">getDeclaringClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.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/Enum.html?is-external=true#name--" title="java.lang中的类或接口">name</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#ordinal--" title="java.lang中的类或接口">ordinal</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.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/Enum.html?is-external=true#valueOf-java.lang.Class-java.lang.String-" title="java.lang中的类或接口">valueOf</a></code></li> |
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| <h4>ARBITRARY</h4> |
| <pre>public static final <a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html" title="org.apache.calcite.plan.hep中的枚举">HepMatchOrder</a> ARBITRARY</pre> |
| <div class="block">Match in arbitrary order. This is the default because it is |
| efficient, and most rules don't care about order.</div> |
| </li> |
| </ul> |
| <a name="BOTTOM_UP"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>BOTTOM_UP</h4> |
| <pre>public static final <a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html" title="org.apache.calcite.plan.hep中的枚举">HepMatchOrder</a> BOTTOM_UP</pre> |
| <div class="block">Match from leaves up. A match attempt at a descendant precedes all match |
| attempts at its ancestors.</div> |
| </li> |
| </ul> |
| <a name="TOP_DOWN"> |
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| </a> |
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| <h4>TOP_DOWN</h4> |
| <pre>public static final <a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html" title="org.apache.calcite.plan.hep中的枚举">HepMatchOrder</a> TOP_DOWN</pre> |
| <div class="block">Match from root down. A match attempt at an ancestor always precedes all |
| match attempts at its descendants.</div> |
| </li> |
| </ul> |
| <a name="DEPTH_FIRST"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>DEPTH_FIRST</h4> |
| <pre>public static final <a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html" title="org.apache.calcite.plan.hep中的枚举">HepMatchOrder</a> DEPTH_FIRST</pre> |
| <div class="block">Match in depth-first order. |
| |
| <p>It avoids applying a rule to the previous |
| <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口"><code>RelNode</code></a> repeatedly after new vertex is |
| generated in one rule application. It can therefore be more efficient than |
| <a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html#ARBITRARY"><code>ARBITRARY</code></a> in cases such as |
| <a href="../../../../../org/apache/calcite/rel/core/Union.html" title="org.apache.calcite.rel.core中的类"><code>Union</code></a> with large fan-out.</div> |
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| <a name="values--"> |
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| <h4>values</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html" title="org.apache.calcite.plan.hep中的枚举">HepMatchOrder</a>[] values()</pre> |
| <div class="block">按照声明该枚举类型的常量的顺序, 返回 |
| 包含这些常量的数组。该方法可用于迭代 |
| 常量, 如下所示: |
| <pre> |
| for (HepMatchOrder c : HepMatchOrder.values()) |
| System.out.println(c); |
| </pre></div> |
| <dl> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>按照声明该枚举类型的常量的顺序返回的包含这些常量的数组</dd> |
| </dl> |
| </li> |
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| <a name="valueOf-java.lang.String-"> |
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| <h4>valueOf</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/plan/hep/HepMatchOrder.html" title="org.apache.calcite.plan.hep中的枚举">HepMatchOrder</a> valueOf(<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> name)</pre> |
| <div class="block">返回带有指定名称的该类型的枚举常量。 |
| 字符串必须与用于声明该类型的枚举常量的 |
| 标识符<i>完全</i>匹配。(不允许有多余 |
| 的空格字符。)</div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>name</code> - 要返回的枚举常量的名称。</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>返回带有指定名称的枚举常量</dd> |
| <dt><span class="throwsLabel">抛出:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="java.lang中的类或接口">IllegalArgumentException</a></code> - 如果该枚举类型没有带有指定名称的常量</dd> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/NullPointerException.html?is-external=true" title="java.lang中的类或接口">NullPointerException</a></code> - 如果参数为空值</dd> |
| </dl> |
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