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<div class="subTitle">org.apache.calcite.sql.util</div>
<h2 title="接口 SqlVisitor" class="title">接口 SqlVisitor&lt;R&gt;</h2>
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<dt><span class="paramLabel">类型参数:</span></dt>
<dd><code>R</code> - Return type</dd>
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<dl>
<dt>所有已知实现类:</dt>
<dd><a href="../../../../../org/apache/calcite/sql/util/SqlBasicVisitor.html" title="org.apache.calcite.sql.util中的类">SqlBasicVisitor</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlScopedShuttle.html" title="org.apache.calcite.sql.validate中的类">SqlScopedShuttle</a>, <a href="../../../../../org/apache/calcite/sql/util/SqlShuttle.html" title="org.apache.calcite.sql.util中的类">SqlShuttle</a>, <a href="../../../../../org/apache/calcite/sql2rel/SqlToRelConverter.AggConverter.html" title="org.apache.calcite.sql2rel中的类">SqlToRelConverter.AggConverter</a>, <a href="../../../../../org/apache/calcite/sql2rel/SqlToRelConverter.Blackboard.html" title="org.apache.calcite.sql2rel中的类">SqlToRelConverter.Blackboard</a>, <a href="../../../../../org/apache/calcite/sql/validate/SqlValidatorUtil.DeepCopier.html" title="org.apache.calcite.sql.validate中的类">SqlValidatorUtil.DeepCopier</a>, <a href="../../../../../org/apache/calcite/util/Util.OverFinder.html" title="org.apache.calcite.util中的类">Util.OverFinder</a></dd>
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<pre>public interface <span class="typeNameLabel">SqlVisitor&lt;R&gt;</span></pre>
<div class="block">Visitor class, follows the
<a href="../../../../../org/apache/calcite/util/Glossary.html#VISITOR_PATTERN"><code>visitor pattern</code></a>.
<p>The type parameter <code>R</code> is the return type of each <code>
visit()</code> method. If the methods do not need to return a value, use
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Void.html?is-external=true" title="java.lang中的类或接口"><code>Void</code></a>.</div>
<dl>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../../org/apache/calcite/sql/util/SqlBasicVisitor.html" title="org.apache.calcite.sql.util中的类"><code>SqlBasicVisitor</code></a>,
<a href="../../../../../org/apache/calcite/sql/SqlNode.html#accept-org.apache.calcite.sql.util.SqlVisitor-"><code>SqlNode.accept(SqlVisitor)</code></a>,
<a href="../../../../../org/apache/calcite/sql/SqlOperator.html#acceptCall-org.apache.calcite.sql.util.SqlVisitor-org.apache.calcite.sql.SqlCall-"><code>SqlOperator.acceptCall(org.apache.calcite.sql.util.SqlVisitor&lt;R&gt;, org.apache.calcite.sql.SqlCall)</code></a></dd>
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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="t3" class="tableTab"><span><a href="javascript:show(4);">抽象方法</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">限定符和类型</th>
<th class="colLast" scope="col">方法和说明</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html#visit-org.apache.calcite.sql.SqlCall-">visit</a></span>(<a href="../../../../../org/apache/calcite/sql/SqlCall.html" title="org.apache.calcite.sql中的类">SqlCall</a>&nbsp;call)</code>
<div class="block">Visits a call to a <a href="../../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类"><code>SqlOperator</code></a>.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html#visit-org.apache.calcite.sql.SqlDataTypeSpec-">visit</a></span>(<a href="../../../../../org/apache/calcite/sql/SqlDataTypeSpec.html" title="org.apache.calcite.sql中的类">SqlDataTypeSpec</a>&nbsp;type)</code>
<div class="block">Visits a datatype specification.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html#visit-org.apache.calcite.sql.SqlDynamicParam-">visit</a></span>(<a href="../../../../../org/apache/calcite/sql/SqlDynamicParam.html" title="org.apache.calcite.sql中的类">SqlDynamicParam</a>&nbsp;param)</code>
<div class="block">Visits a dynamic parameter.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html#visit-org.apache.calcite.sql.SqlIdentifier-">visit</a></span>(<a href="../../../../../org/apache/calcite/sql/SqlIdentifier.html" title="org.apache.calcite.sql中的类">SqlIdentifier</a>&nbsp;id)</code>
<div class="block">Visits an identifier.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html#visit-org.apache.calcite.sql.SqlIntervalQualifier-">visit</a></span>(<a href="../../../../../org/apache/calcite/sql/SqlIntervalQualifier.html" title="org.apache.calcite.sql中的类">SqlIntervalQualifier</a>&nbsp;intervalQualifier)</code>
<div class="block">Visits an interval qualifier</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html#visit-org.apache.calcite.sql.SqlLiteral-">visit</a></span>(<a href="../../../../../org/apache/calcite/sql/SqlLiteral.html" title="org.apache.calcite.sql中的类">SqlLiteral</a>&nbsp;literal)</code>
<div class="block">Visits a literal.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html#visit-org.apache.calcite.sql.SqlNodeList-">visit</a></span>(<a href="../../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;nodeList)</code>
<div class="block">Visits a list of <a href="../../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类"><code>SqlNode</code></a> objects.</div>
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</tr>
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</li>
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<h3>方法详细资料</h3>
<a name="visit-org.apache.calcite.sql.SqlLiteral-">
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<ul class="blockList">
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<h4>visit</h4>
<pre><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a>&nbsp;visit(<a href="../../../../../org/apache/calcite/sql/SqlLiteral.html" title="org.apache.calcite.sql中的类">SqlLiteral</a>&nbsp;literal)</pre>
<div class="block">Visits a literal.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>literal</code> - Literal</dd>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../../org/apache/calcite/sql/SqlLiteral.html#accept-org.apache.calcite.sql.util.SqlVisitor-"><code>SqlLiteral.accept(SqlVisitor)</code></a></dd>
</dl>
</li>
</ul>
<a name="visit-org.apache.calcite.sql.SqlCall-">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>visit</h4>
<pre><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a>&nbsp;visit(<a href="../../../../../org/apache/calcite/sql/SqlCall.html" title="org.apache.calcite.sql中的类">SqlCall</a>&nbsp;call)</pre>
<div class="block">Visits a call to a <a href="../../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类"><code>SqlOperator</code></a>.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>call</code> - Call</dd>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../../org/apache/calcite/sql/SqlCall.html#accept-org.apache.calcite.sql.util.SqlVisitor-"><code>SqlCall.accept(SqlVisitor)</code></a></dd>
</dl>
</li>
</ul>
<a name="visit-org.apache.calcite.sql.SqlNodeList-">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>visit</h4>
<pre><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a>&nbsp;visit(<a href="../../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;nodeList)</pre>
<div class="block">Visits a list of <a href="../../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类"><code>SqlNode</code></a> objects.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>nodeList</code> - list of nodes</dd>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../../org/apache/calcite/sql/SqlNodeList.html#accept-org.apache.calcite.sql.util.SqlVisitor-"><code>SqlNodeList.accept(SqlVisitor)</code></a></dd>
</dl>
</li>
</ul>
<a name="visit-org.apache.calcite.sql.SqlIdentifier-">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>visit</h4>
<pre><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a>&nbsp;visit(<a href="../../../../../org/apache/calcite/sql/SqlIdentifier.html" title="org.apache.calcite.sql中的类">SqlIdentifier</a>&nbsp;id)</pre>
<div class="block">Visits an identifier.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>id</code> - identifier</dd>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../../org/apache/calcite/sql/SqlIdentifier.html#accept-org.apache.calcite.sql.util.SqlVisitor-"><code>SqlIdentifier.accept(SqlVisitor)</code></a></dd>
</dl>
</li>
</ul>
<a name="visit-org.apache.calcite.sql.SqlDataTypeSpec-">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>visit</h4>
<pre><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a>&nbsp;visit(<a href="../../../../../org/apache/calcite/sql/SqlDataTypeSpec.html" title="org.apache.calcite.sql中的类">SqlDataTypeSpec</a>&nbsp;type)</pre>
<div class="block">Visits a datatype specification.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>type</code> - datatype specification</dd>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../../org/apache/calcite/sql/SqlDataTypeSpec.html#accept-org.apache.calcite.sql.util.SqlVisitor-"><code>SqlDataTypeSpec.accept(SqlVisitor)</code></a></dd>
</dl>
</li>
</ul>
<a name="visit-org.apache.calcite.sql.SqlDynamicParam-">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>visit</h4>
<pre><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a>&nbsp;visit(<a href="../../../../../org/apache/calcite/sql/SqlDynamicParam.html" title="org.apache.calcite.sql中的类">SqlDynamicParam</a>&nbsp;param)</pre>
<div class="block">Visits a dynamic parameter.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>param</code> - Dynamic parameter</dd>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../../org/apache/calcite/sql/SqlDynamicParam.html#accept-org.apache.calcite.sql.util.SqlVisitor-"><code>SqlDynamicParam.accept(SqlVisitor)</code></a></dd>
</dl>
</li>
</ul>
<a name="visit-org.apache.calcite.sql.SqlIntervalQualifier-">
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</a>
<ul class="blockListLast">
<li class="blockList">
<h4>visit</h4>
<pre><a href="../../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="SqlVisitor中的类型参数">R</a>&nbsp;visit(<a href="../../../../../org/apache/calcite/sql/SqlIntervalQualifier.html" title="org.apache.calcite.sql中的类">SqlIntervalQualifier</a>&nbsp;intervalQualifier)</pre>
<div class="block">Visits an interval qualifier</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>intervalQualifier</code> - Interval qualifier</dd>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../../org/apache/calcite/sql/SqlIntervalQualifier.html#accept-org.apache.calcite.sql.util.SqlVisitor-"><code>SqlIntervalQualifier.accept(SqlVisitor)</code></a></dd>
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