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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.adapter.cassandra</a></div>
<h2 title="Class CassandraFilter.Translator" class="title">Class CassandraFilter.Translator</h2>
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<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
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<ul class="inheritance">
<li>org.apache.calcite.adapter.cassandra.CassandraFilter.Translator</li>
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<pre>static class <span class="typeNameLabel">CassandraFilter.Translator</span>
extends java.lang.Object</pre>
<div class="block">Translates <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a> expressions into Cassandra expression strings.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private java.util.List&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#clusteringKeys">clusteringKeys</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private java.util.List&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#fieldNames">fieldNames</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private java.util.List&lt;<a href="../../rel/RelFieldCollation.html" title="class in org.apache.calcite.rel">RelFieldCollation</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#implicitFieldCollations">implicitFieldCollations</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private java.util.Set&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#partitionKeys">partitionKeys</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#restrictedClusteringKeys">restrictedClusteringKeys</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rowType">rowType</a></span></code></th>
<td class="colLast">&nbsp;</td>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.rel.type.RelDataType,java.util.List,java.util.List,java.util.List)">Translator</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
java.util.List&lt;java.lang.String&gt;&nbsp;partitionKeys,
java.util.List&lt;java.lang.String&gt;&nbsp;clusteringKeys,
java.util.List&lt;<a href="../../rel/RelFieldCollation.html" title="class in org.apache.calcite.rel">RelFieldCollation</a>&gt;&nbsp;implicitFieldCollations)</code></th>
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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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<td class="colFirst"><code><a href="../../rel/RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getImplicitCollation()">getImplicitCollation</a></span>()</code></th>
<td class="colLast">
<div class="block">Infer the implicit correlation from the unrestricted clustering keys.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isSinglePartition()">isSinglePartition</a></span>()</code></th>
<td class="colLast">
<div class="block">Check if the query spans only one partition.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>private static java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#literalValue(org.apache.calcite.rex.RexLiteral)">literalValue</a></span>&#8203;(<a href="../../rex/RexLiteral.html" title="class in org.apache.calcite.rex">RexLiteral</a>&nbsp;literal)</code></th>
<td class="colLast">
<div class="block">Convert the value of a literal to a string.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>private java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#translateAnd(org.apache.calcite.rex.RexNode)">translateAnd</a></span>&#8203;(<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;condition)</code></th>
<td class="colLast">
<div class="block">Translate a conjunctive predicate to a CQL string.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>private java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#translateBinary(java.lang.String,java.lang.String,org.apache.calcite.rex.RexCall)">translateBinary</a></span>&#8203;(java.lang.String&nbsp;op,
java.lang.String&nbsp;rop,
<a href="../../rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a>&nbsp;call)</code></th>
<td class="colLast">
<div class="block">Translates a call to a binary operator, reversing arguments if
necessary.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>private java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#translateBinary2(java.lang.String,org.apache.calcite.rex.RexNode,org.apache.calcite.rex.RexNode)">translateBinary2</a></span>&#8203;(java.lang.String&nbsp;op,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;left,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;right)</code></th>
<td class="colLast">
<div class="block">Translates a call to a binary operator.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>private java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#translateMatch(org.apache.calcite.rex.RexNode)">translateMatch</a></span>&#8203;(<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;condition)</code></th>
<td class="colLast">
<div class="block">Produce the CQL predicate string for the given condition.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>private java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#translateMatch2(org.apache.calcite.rex.RexNode)">translateMatch2</a></span>&#8203;(<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;node)</code></th>
<td class="colLast">
<div class="block">Translate a binary relation.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>private java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#translateOp2(java.lang.String,java.lang.String,org.apache.calcite.rex.RexLiteral)">translateOp2</a></span>&#8203;(java.lang.String&nbsp;op,
java.lang.String&nbsp;name,
<a href="../../rex/RexLiteral.html" title="class in org.apache.calcite.rex">RexLiteral</a>&nbsp;right)</code></th>
<td class="colLast">
<div class="block">Combines a field name, operator, and literal to produce a predicate string.</div>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h4>rowType</h4>
<pre>private final&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> rowType</pre>
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<h4>fieldNames</h4>
<pre>private final&nbsp;java.util.List&lt;java.lang.String&gt; fieldNames</pre>
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<h4>partitionKeys</h4>
<pre>private final&nbsp;java.util.Set&lt;java.lang.String&gt; partitionKeys</pre>
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<h4>clusteringKeys</h4>
<pre>private final&nbsp;java.util.List&lt;java.lang.String&gt; clusteringKeys</pre>
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<h4>restrictedClusteringKeys</h4>
<pre>private&nbsp;int restrictedClusteringKeys</pre>
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<h4>implicitFieldCollations</h4>
<pre>private final&nbsp;java.util.List&lt;<a href="../../rel/RelFieldCollation.html" title="class in org.apache.calcite.rel">RelFieldCollation</a>&gt; implicitFieldCollations</pre>
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<h4>Translator</h4>
<pre>Translator&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
java.util.List&lt;java.lang.String&gt;&nbsp;partitionKeys,
java.util.List&lt;java.lang.String&gt;&nbsp;clusteringKeys,
java.util.List&lt;<a href="../../rel/RelFieldCollation.html" title="class in org.apache.calcite.rel">RelFieldCollation</a>&gt;&nbsp;implicitFieldCollations)</pre>
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<h4>isSinglePartition</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;isSinglePartition()</pre>
<div class="block">Check if the query spans only one partition.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>True if the matches translated so far have resulted in a single partition</dd>
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<a id="getImplicitCollation()">
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<h4>getImplicitCollation</h4>
<pre class="methodSignature">public&nbsp;<a href="../../rel/RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a>&nbsp;getImplicitCollation()</pre>
<div class="block">Infer the implicit correlation from the unrestricted clustering keys.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The collation of the filtered results</dd>
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<h4>translateMatch</h4>
<pre class="methodSignature">private&nbsp;java.lang.String&nbsp;translateMatch&#8203;(<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;condition)</pre>
<div class="block">Produce the CQL predicate string for the given condition.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>condition</code> - Condition to translate</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>CQL predicate string</dd>
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<pre class="methodSignature">private static&nbsp;java.lang.String&nbsp;literalValue&#8203;(<a href="../../rex/RexLiteral.html" title="class in org.apache.calcite.rex">RexLiteral</a>&nbsp;literal)</pre>
<div class="block">Convert the value of a literal to a string.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>literal</code> - Literal to translate</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>String representation of the literal</dd>
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<pre class="methodSignature">private&nbsp;java.lang.String&nbsp;translateAnd&#8203;(<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;condition)</pre>
<div class="block">Translate a conjunctive predicate to a CQL string.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>condition</code> - A conjunctive predicate</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>CQL string for the predicate</dd>
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<h4>translateMatch2</h4>
<pre class="methodSignature">private&nbsp;java.lang.String&nbsp;translateMatch2&#8203;(<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;node)</pre>
<div class="block">Translate a binary relation.</div>
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<h4>translateBinary</h4>
<pre class="methodSignature">private&nbsp;java.lang.String&nbsp;translateBinary&#8203;(java.lang.String&nbsp;op,
java.lang.String&nbsp;rop,
<a href="../../rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a>&nbsp;call)</pre>
<div class="block">Translates a call to a binary operator, reversing arguments if
necessary.</div>
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<h4>translateBinary2</h4>
<pre class="methodSignature">private&nbsp;java.lang.String&nbsp;translateBinary2&#8203;(java.lang.String&nbsp;op,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;left,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;right)</pre>
<div class="block">Translates a call to a binary operator. Returns null on failure.</div>
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<h4>translateOp2</h4>
<pre class="methodSignature">private&nbsp;java.lang.String&nbsp;translateOp2&#8203;(java.lang.String&nbsp;op,
java.lang.String&nbsp;name,
<a href="../../rex/RexLiteral.html" title="class in org.apache.calcite.rex">RexLiteral</a>&nbsp;right)</pre>
<div class="block">Combines a field name, operator, and literal to produce a predicate string.</div>
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