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<li>概要:&nbsp;</li>
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<div class="subTitle">org.apache.calcite.rex</div>
<h2 title="类 RexCall" class="title">类 RexCall</h2>
</div>
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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="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">org.apache.calcite.rex.RexNode</a></li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.rex.RexCall</li>
</ul>
</li>
</ul>
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<div class="description">
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<dl>
<dt>直接已知子类:</dt>
<dd><a href="../../../../org/apache/calcite/rel/core/Match.RexMRAggCall.html" title="org.apache.calcite.rel.core中的类">Match.RexMRAggCall</a>, <a href="../../../../org/apache/calcite/rex/RexOver.html" title="org.apache.calcite.rex中的类">RexOver</a>, <a href="../../../../org/apache/calcite/rex/RexSubQuery.html" title="org.apache.calcite.rex中的类">RexSubQuery</a>, <a href="../../../../org/apache/calcite/rel/core/Window.RexWinAggCall.html" title="org.apache.calcite.rel.core中的类">Window.RexWinAggCall</a></dd>
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<pre>public class <span class="typeNameLabel">RexCall</span>
extends <a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></pre>
<div class="block">An expression formed by a call to an operator with zero or more expressions
as operands.
<p>Operators may be binary, unary, functions, special syntactic constructs
like <code>CASE ... WHEN ... END</code>, or even internally generated
constructs like implicit type conversions. The syntax of the operator is
really irrelevant, because row-expressions (unlike
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类"><code>SQL expressions</code></a>)
do not directly represent a piece of source code.
<p>It's not often necessary to sub-class this class. The smarts should be in
the operator, rather than the call. Any extra information about the call can
often be encoded as extra arguments. (These don't need to be hidden, because
no one is going to be generating source code from this tree.)</p></div>
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<h3>嵌套类概要</h3>
<ul class="blockList">
<li class="blockList"><a name="nested.classes.inherited.from.class.org.apache.calcite.rex.RexNode">
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<h3>从类继承的嵌套类/接口&nbsp;org.apache.calcite.rex.<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></h3>
<code><a href="../../../../org/apache/calcite/rex/RexNode.Closeable.html" title="org.apache.calcite.rex中的接口">RexNode.Closeable</a></code></li>
</ul>
</li>
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<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">&nbsp;</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>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#nodeCount">nodeCount</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#op">op</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>com.google.common.collect.ImmutableList&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#operands">operands</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#type">type</a></span></code>&nbsp;</td>
</tr>
</table>
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<h3>从类继承的字段&nbsp;org.apache.calcite.rex.<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></h3>
<code><a href="../../../../org/apache/calcite/rex/RexNode.html#digest">digest</a></code></li>
</ul>
</li>
</ul>
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<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">&nbsp;</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/rex/RexCall.html#RexCall-org.apache.calcite.rel.type.RelDataType-org.apache.calcite.sql.SqlOperator-java.util.List-">RexCall</a></span>(<a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a>&nbsp;type,
<a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a>&nbsp;op,
<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;? extends <a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;operands)</code>&nbsp;</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">&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>
<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>&lt;R,P&gt;&nbsp;R</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#accept-org.apache.calcite.rex.RexBiVisitor-P-">accept</a></span>(<a href="../../../../org/apache/calcite/rex/RexBiVisitor.html" title="org.apache.calcite.rex中的接口">RexBiVisitor</a>&lt;R,P&gt;&nbsp;visitor,
P&nbsp;arg)</code>
<div class="block">Accepts a visitor with a payload, dispatching to the right overloaded
<a href="../../../../org/apache/calcite/rex/RexBiVisitor.html#visitInputRef-org.apache.calcite.rex.RexInputRef-P-"><code>RexBiVisitor.visitInputRef(RexInputRef, Object)</code></a> visitXxx} method.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>&lt;R&gt;&nbsp;R</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#accept-org.apache.calcite.rex.RexVisitor-">accept</a></span>(<a href="../../../../org/apache/calcite/rex/RexVisitor.html" title="org.apache.calcite.rex中的接口">RexVisitor</a>&lt;R&gt;&nbsp;visitor)</code>
<div class="block">Accepts a visitor, dispatching to the right overloaded
<a href="../../../../org/apache/calcite/rex/RexVisitor.html#visitInputRef-org.apache.calcite.rex.RexInputRef-"><code>visitXxx</code></a> method.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="java.lang中的类或接口">StringBuilder</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#appendOperands-java.lang.StringBuilder-">appendOperands</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="java.lang中的类或接口">StringBuilder</a>&nbsp;sb)</code>
<div class="block">Appends call operands without parenthesis.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/rex/RexCall.html" title="org.apache.calcite.rex中的类">RexCall</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#clone-org.apache.calcite.rel.type.RelDataType-java.util.List-">clone</a></span>(<a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a>&nbsp;type,
<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/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;operands)</code>
<div class="block">Creates a new call to the same operator with different operands.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>protected <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#computeDigest-boolean-">computeDigest</a></span>(boolean&nbsp;withType)</code>&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#equals-java.lang.Object-">equals</a></span>(<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>&nbsp;obj)</code>
<div class="block">
Every node must implement <a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-"><code>RexNode.equals(java.lang.Object)</code></a> based on its content</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/sql/SqlKind.html" title="org.apache.calcite.sql中的枚举">SqlKind</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#getKind--">getKind</a></span>()</code>
<div class="block">Returns the kind of node this is.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<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/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#getOperands--">getOperands</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#getOperator--">getOperator</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#getType--">getType</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#hashCode--">hashCode</a></span>()</code>
<div class="block">
Every node must implement <a href="../../../../org/apache/calcite/rex/RexNode.html#hashCode--"><code>RexNode.hashCode()</code></a> consistent with
<a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-"><code>RexNode.equals(java.lang.Object)</code></a></div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#isAlwaysFalse--">isAlwaysFalse</a></span>()</code>
<div class="block">Returns whether this expression always returns false.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#isAlwaysTrue--">isAlwaysTrue</a></span>()</code>
<div class="block">Returns whether this expression always returns true.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#nodeCount--">nodeCount</a></span>()</code>
<div class="block">Returns the number of nodes in this expression.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code><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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexCall.html#toString--">toString</a></span>()</code>&nbsp;</td>
</tr>
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<h3>从类继承的方法&nbsp;org.apache.calcite.rex.<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></h3>
<code><a href="../../../../org/apache/calcite/rex/RexNode.html#isA-java.util.Collection-">isA</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#isA-org.apache.calcite.sql.SqlKind-">isA</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#needNormalize--">needNormalize</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#skipNormalize--">skipNormalize</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#toStringRaw--">toStringRaw</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#withNormalize-boolean-">withNormalize</a></code></li>
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<h3>从类继承的方法&nbsp;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#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>
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<h3>字段详细资料</h3>
<a name="op">
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<h4>op</h4>
<pre>public final&nbsp;<a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a> op</pre>
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<a name="operands">
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<h4>operands</h4>
<pre>public final&nbsp;com.google.common.collect.ImmutableList&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt; operands</pre>
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<h4>type</h4>
<pre>public final&nbsp;<a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a> type</pre>
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<pre>public final&nbsp;int nodeCount</pre>
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<h3>构造器详细资料</h3>
<a name="RexCall-org.apache.calcite.rel.type.RelDataType-org.apache.calcite.sql.SqlOperator-java.util.List-">
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<h4>RexCall</h4>
<pre>protected&nbsp;RexCall(<a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a>&nbsp;type,
<a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a>&nbsp;op,
<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;? extends <a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;operands)</pre>
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<h3>方法详细资料</h3>
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<pre>protected final&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="java.lang中的类或接口">StringBuilder</a>&nbsp;appendOperands(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="java.lang中的类或接口">StringBuilder</a>&nbsp;sb)</pre>
<div class="block">Appends call operands without parenthesis.
<a href="../../../../org/apache/calcite/rex/RexLiteral.html" title="org.apache.calcite.rex中的类"><code>RexLiteral</code></a> might omit data type depending on the context.
For instance, <code>null:BOOLEAN</code> vs <code>=(true, null)</code>.
The idea here is to omit "obvious" types for readability purposes while
still maintain <a href="../../../../org/apache/calcite/plan/RelOptNode.html#getDigest--"><code>RelOptNode.getDigest()</code></a> contract.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>sb</code> - destination</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>original StringBuilder for fluent API</dd>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../org/apache/calcite/rex/RexLiteral.html#computeDigest-org.apache.calcite.rex.RexDigestIncludeType-"><code>RexLiteral.computeDigest(RexDigestIncludeType)</code></a></dd>
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<pre><a href="https://docs.oracle.com/javase/8/docs/api/javax/annotation/Nonnull.html?is-external=true" title="javax.annotation中的类或接口">@Nonnull</a>
protected&nbsp;<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>&nbsp;computeDigest(boolean&nbsp;withType)</pre>
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<h4>toString</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/javax/annotation/Nonnull.html?is-external=true" title="javax.annotation中的类或接口">@Nonnull</a>
public final&nbsp;<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>&nbsp;toString()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#toString--">toString</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd>
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<h4>accept</h4>
<pre>public&nbsp;&lt;R&gt;&nbsp;R&nbsp;accept(<a href="../../../../org/apache/calcite/rex/RexVisitor.html" title="org.apache.calcite.rex中的接口">RexVisitor</a>&lt;R&gt;&nbsp;visitor)</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html#accept-org.apache.calcite.rex.RexVisitor-">RexNode</a></code></span></div>
<div class="block">Accepts a visitor, dispatching to the right overloaded
<a href="../../../../org/apache/calcite/rex/RexVisitor.html#visitInputRef-org.apache.calcite.rex.RexInputRef-"><code>visitXxx</code></a> method.
<p>Also see <a href="../../../../org/apache/calcite/rex/RexUtil.html#apply-org.apache.calcite.rex.RexVisitor-java.util.List-org.apache.calcite.rex.RexNode-"><code>RexUtil.apply(RexVisitor, java.util.List, RexNode)</code></a>,
which applies a visitor to several expressions simultaneously.</div>
<dl>
<dt><span class="overrideSpecifyLabel">指定者:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#accept-org.apache.calcite.rex.RexVisitor-">accept</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd>
</dl>
</li>
</ul>
<a name="accept-org.apache.calcite.rex.RexBiVisitor-java.lang.Object-">
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<pre>public&nbsp;&lt;R,P&gt;&nbsp;R&nbsp;accept(<a href="../../../../org/apache/calcite/rex/RexBiVisitor.html" title="org.apache.calcite.rex中的接口">RexBiVisitor</a>&lt;R,P&gt;&nbsp;visitor,
P&nbsp;arg)</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html#accept-org.apache.calcite.rex.RexBiVisitor-P-">RexNode</a></code></span></div>
<div class="block">Accepts a visitor with a payload, dispatching to the right overloaded
<a href="../../../../org/apache/calcite/rex/RexBiVisitor.html#visitInputRef-org.apache.calcite.rex.RexInputRef-P-"><code>RexBiVisitor.visitInputRef(RexInputRef, Object)</code></a> visitXxx} method.</div>
<dl>
<dt><span class="overrideSpecifyLabel">指定者:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#accept-org.apache.calcite.rex.RexBiVisitor-P-">accept</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd>
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<pre>public&nbsp;<a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a>&nbsp;getType()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">指定者:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#getType--">getType</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd>
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<pre>public&nbsp;boolean&nbsp;isAlwaysTrue()</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html#isAlwaysTrue--">RexNode</a></code></span></div>
<div class="block">Returns whether this expression always returns true. (Such as if this
expression is equal to the literal <code>TRUE</code>.)</div>
<dl>
<dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#isAlwaysTrue--">isAlwaysTrue</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd>
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<pre>public&nbsp;boolean&nbsp;isAlwaysFalse()</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html#isAlwaysFalse--">RexNode</a></code></span></div>
<div class="block">Returns whether this expression always returns false. (Such as if this
expression is equal to the literal <code>FALSE</code>.)</div>
<dl>
<dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#isAlwaysFalse--">isAlwaysFalse</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd>
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<pre>public&nbsp;<a href="../../../../org/apache/calcite/sql/SqlKind.html" title="org.apache.calcite.sql中的枚举">SqlKind</a>&nbsp;getKind()</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html#getKind--">RexNode</a></code></span></div>
<div class="block">Returns the kind of node this is.</div>
<dl>
<dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#getKind--">getKind</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>Node kind, never null</dd>
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<h4>getOperands</h4>
<pre>public&nbsp;<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/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;getOperands()</pre>
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<pre>public&nbsp;<a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a>&nbsp;getOperator()</pre>
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<pre>public&nbsp;int&nbsp;nodeCount()</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html#nodeCount--">RexNode</a></code></span></div>
<div class="block">Returns the number of nodes in this expression.
<p>Leaf nodes, such as <a href="../../../../org/apache/calcite/rex/RexInputRef.html" title="org.apache.calcite.rex中的类"><code>RexInputRef</code></a> or <a href="../../../../org/apache/calcite/rex/RexLiteral.html" title="org.apache.calcite.rex中的类"><code>RexLiteral</code></a>, have
a count of 1. Calls have a count of 1 plus the sum of their operands.
<p>Node count is a measure of expression complexity that is used by some
planner rules to prevent deeply nested expressions.</div>
<dl>
<dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#nodeCount--">nodeCount</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd>
</dl>
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<a name="clone-org.apache.calcite.rel.type.RelDataType-java.util.List-">
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<h4>clone</h4>
<pre>public&nbsp;<a href="../../../../org/apache/calcite/rex/RexCall.html" title="org.apache.calcite.rex中的类">RexCall</a>&nbsp;clone(<a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a>&nbsp;type,
<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/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;operands)</pre>
<div class="block">Creates a new call to the same operator with different operands.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>type</code> - Return type</dd>
<dd><code>operands</code> - Operands to call</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>New call</dd>
</dl>
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</ul>
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<h4>equals</h4>
<pre>public&nbsp;boolean&nbsp;equals(<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>&nbsp;obj)</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-">RexNode</a></code></span></div>
<div class="block">
<p>Every node must implement <a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-"><code>RexNode.equals(java.lang.Object)</code></a> based on its content</div>
<dl>
<dt><span class="overrideSpecifyLabel">指定者:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-">equals</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd>
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<h4>hashCode</h4>
<pre>public&nbsp;int&nbsp;hashCode()</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html#hashCode--">RexNode</a></code></span></div>
<div class="block">
<p>Every node must implement <a href="../../../../org/apache/calcite/rex/RexNode.html#hashCode--"><code>RexNode.hashCode()</code></a> consistent with
<a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-"><code>RexNode.equals(java.lang.Object)</code></a></div>
<dl>
<dt><span class="overrideSpecifyLabel">指定者:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#hashCode--">hashCode</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd>
</dl>
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