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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.sql.validate</a></div>
<h2 title="Interface SqlNameMatcher" class="title">Interface SqlNameMatcher</h2>
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<dt>All Known Implementing Classes:</dt>
<dd><code><a href="SqlNameMatchers.BaseMatcher.html" title="class in org.apache.calcite.sql.validate">SqlNameMatchers.BaseMatcher</a></code>, <code><a href="SqlNameMatchers.LiberalNameMatcher.html" title="class in org.apache.calcite.sql.validate">SqlNameMatchers.LiberalNameMatcher</a></code></dd>
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<pre>public interface <span class="typeNameLabel">SqlNameMatcher</span></pre>
<div class="block">Checks whether two names are the same according to a case-sensitivity policy.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="SqlNameMatchers.html" title="class in org.apache.calcite.sql.validate"><code>SqlNameMatchers</code></a></dd>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#bestString()">bestString</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the most recent match.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>java.util.Set&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createSet()">createSet</a></span>()</code></th>
<td class="colLast">
<div class="block">Creates a set that has the same case-sensitivity as this matcher.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../rel/type/RelDataTypeField.html" title="interface in org.apache.calcite.rel.type">RelDataTypeField</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#field(org.apache.calcite.rel.type.RelDataType,java.lang.String)">field</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
java.lang.String&nbsp;fieldName)</code></th>
<td class="colLast">
<div class="block">Finds a field with a given name, using the current case-sensitivity,
returning null if not found.</div>
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<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#frequency(java.lang.Iterable,java.lang.String)">frequency</a></span>&#8203;(java.lang.Iterable&lt;java.lang.String&gt;&nbsp;names,
java.lang.String&nbsp;name)</code></th>
<td class="colLast">
<div class="block">Returns how many times a string occurs in a collection.</div>
</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>&lt;K extends java.util.List&lt;java.lang.String&gt;,&#8203;V&gt;<br>V</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#get(java.util.Map,java.util.List,java.util.List)">get</a></span>&#8203;(java.util.Map&lt;K,&#8203;V&gt;&nbsp;map,
java.util.List&lt;java.lang.String&gt;&nbsp;prefixNames,
java.util.List&lt;java.lang.String&gt;&nbsp;names)</code></th>
<td class="colLast">
<div class="block">Looks up an item in a map.</div>
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<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isCaseSensitive()">isCaseSensitive</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns whether name matching is case-sensitive.</div>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#matches(java.lang.String,java.lang.String)">matches</a></span>&#8203;(java.lang.String&nbsp;string,
java.lang.String&nbsp;name)</code></th>
<td class="colLast">
<div class="block">Returns a name matches another.</div>
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<h4>isCaseSensitive</h4>
<pre class="methodSignature">boolean&nbsp;isCaseSensitive()</pre>
<div class="block">Returns whether name matching is case-sensitive.</div>
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<h4>matches</h4>
<pre class="methodSignature">boolean&nbsp;matches&#8203;(java.lang.String&nbsp;string,
java.lang.String&nbsp;name)</pre>
<div class="block">Returns a name matches another.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>string</code> - Name written in code</dd>
<dd><code>name</code> - Name of object we are trying to match</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Whether matches</dd>
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<h4>get</h4>
<pre class="methodSignature">&lt;K extends java.util.List&lt;java.lang.String&gt;,&#8203;V&gt;&nbsp;V&nbsp;get&#8203;(java.util.Map&lt;K,&#8203;V&gt;&nbsp;map,
java.util.List&lt;java.lang.String&gt;&nbsp;prefixNames,
java.util.List&lt;java.lang.String&gt;&nbsp;names)</pre>
<div class="block">Looks up an item in a map.</div>
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<h4>bestString</h4>
<pre class="methodSignature">java.lang.String&nbsp;bestString()</pre>
<div class="block">Returns the most recent match.
<p>In the default implementation,
throws <code>UnsupportedOperationException</code>.</div>
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<h4>field</h4>
<pre class="methodSignature"><a href="../../rel/type/RelDataTypeField.html" title="interface in org.apache.calcite.rel.type">RelDataTypeField</a>&nbsp;field&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
java.lang.String&nbsp;fieldName)</pre>
<div class="block">Finds a field with a given name, using the current case-sensitivity,
returning null if not found.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rowType</code> - Row type</dd>
<dd><code>fieldName</code> - Field name</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Field, or null if not found</dd>
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<h4>frequency</h4>
<pre class="methodSignature">int&nbsp;frequency&#8203;(java.lang.Iterable&lt;java.lang.String&gt;&nbsp;names,
java.lang.String&nbsp;name)</pre>
<div class="block">Returns how many times a string occurs in a collection.
<p>Similar to <code>Collections.frequency(java.util.Collection&lt;?&gt;, java.lang.Object)</code>.</div>
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<h4>createSet</h4>
<pre class="methodSignature">java.util.Set&lt;java.lang.String&gt;&nbsp;createSet()</pre>
<div class="block">Creates a set that has the same case-sensitivity as this matcher.</div>
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