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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.rex</a></div> |
| <h2 title="Class RexInputRef" class="title">Class RexInputRef</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="RexNode.html" title="class in org.apache.calcite.rex">org.apache.calcite.rex.RexNode</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="RexVariable.html" title="class in org.apache.calcite.rex">org.apache.calcite.rex.RexVariable</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="RexSlot.html" title="class in org.apache.calcite.rex">org.apache.calcite.rex.RexSlot</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.rex.RexInputRef</li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
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| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><code><a href="RexPatternFieldRef.html" title="class in org.apache.calcite.rex">RexPatternFieldRef</a></code>, <code><a href="RexTableInputRef.html" title="class in org.apache.calcite.rex">RexTableInputRef</a></code></dd> |
| </dl> |
| <hr> |
| <pre>public class <span class="typeNameLabel">RexInputRef</span> |
| extends <a href="RexSlot.html" title="class in org.apache.calcite.rex">RexSlot</a></pre> |
| <div class="block">Variable which references a field of an input relational expression. |
| |
| <p>Fields of the input are 0-based. If there is more than one input, they are |
| numbered consecutively. For example, if the inputs to a join are</p> |
| |
| <ul> |
| <li>Input #0: EMP(EMPNO, ENAME, DEPTNO) and</li> |
| <li>Input #1: DEPT(DEPTNO AS DEPTNO2, DNAME)</li> |
| </ul> |
| |
| <p>then the fields are:</p> |
| |
| <ul> |
| <li>Field #0: EMPNO</li> |
| <li>Field #1: ENAME</li> |
| <li>Field #2: DEPTNO (from EMP)</li> |
| <li>Field #3: DEPTNO2 (from DEPT)</li> |
| <li>Field #4: DNAME</li> |
| </ul> |
| |
| <p>So <code>RexInputRef(3, Integer)</code> is the correct reference for the |
| field DEPTNO2.</p></div> |
| </li> |
| </ul> |
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| </a> |
| <h3>Nested classes/interfaces inherited from class org.apache.calcite.rex.<a href="RexSlot.html" title="class in org.apache.calcite.rex">RexSlot</a></h3> |
| <code><a href="RexSlot.SelfPopulatingList.html" title="class in org.apache.calcite.rex">RexSlot.SelfPopulatingList</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
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| <table class="memberSummary"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <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 static java.util.List<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#NAMES">NAMES</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
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| <!-- --> |
| </a> |
| <h3>Fields inherited from class org.apache.calcite.rex.<a href="RexSlot.html" title="class in org.apache.calcite.rex">RexSlot</a></h3> |
| <code><a href="RexSlot.html#index">index</a></code></li> |
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| </a> |
| <h3>Fields inherited from class org.apache.calcite.rex.<a href="RexVariable.html" title="class in org.apache.calcite.rex">RexVariable</a></h3> |
| <code><a href="RexVariable.html#name">name</a>, <a href="RexVariable.html#type">type</a></code></li> |
| </ul> |
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| </a> |
| <h3>Fields inherited from class org.apache.calcite.rex.<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></h3> |
| <code><a href="RexNode.html#digest">digest</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(int,org.apache.calcite.rel.type.RelDataType)">RexInputRef</a></span>​(int index, |
| <a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> type)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates an input variable.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><R,​P><br>R</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#accept(org.apache.calcite.rex.RexBiVisitor,P)">accept</a></span>​(<a href="RexBiVisitor.html" title="interface in org.apache.calcite.rex">RexBiVisitor</a><R,​P> visitor, |
| P arg)</code></th> |
| <td class="colLast"> |
| <div class="block">Accepts a visitor with a payload, dispatching to the right overloaded |
| <a href="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><R> R</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#accept(org.apache.calcite.rex.RexVisitor)">accept</a></span>​(<a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a><R> visitor)</code></th> |
| <td class="colLast"> |
| <div class="block">Accepts a visitor, dispatching to the right overloaded |
| <a href="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>static java.lang.String</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createName(int)">createName</a></span>​(int index)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a name for an input reference, of the form "$index".</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equals(java.lang.Object)">equals</a></span>​(java.lang.Object obj)</code></th> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../sql/SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getKind()">getKind</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the kind of node this is.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hashCode()">hashCode</a></span>()</code></th> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static <a href="RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of(int,java.util.List)">of</a></span>​(int index, |
| java.util.List<<a href="../rel/type/RelDataTypeField.html" title="interface in org.apache.calcite.rel.type">RelDataTypeField</a>> fields)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a reference to a given field in a list of fields.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static <a href="RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of(int,org.apache.calcite.rel.type.RelDataType)">of</a></span>​(int index, |
| <a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> rowType)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a reference to a given field in a row type.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static <a href="../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,​java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#of2(int,java.util.List)">of2</a></span>​(int index, |
| java.util.List<<a href="../rel/type/RelDataTypeField.html" title="interface in org.apache.calcite.rel.type">RelDataTypeField</a>> fields)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a reference to a given field in a list of fields.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.org.apache.calcite.rex.RexSlot"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.calcite.rex.<a href="RexSlot.html" title="class in org.apache.calcite.rex">RexSlot</a></h3> |
| <code><a href="RexSlot.html#getIndex()">getIndex</a></code></li> |
| </ul> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.org.apache.calcite.rex.RexVariable"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.calcite.rex.<a href="RexVariable.html" title="class in org.apache.calcite.rex">RexVariable</a></h3> |
| <code><a href="RexVariable.html#getName()">getName</a>, <a href="RexVariable.html#getType()">getType</a></code></li> |
| </ul> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.org.apache.calcite.rex.RexNode"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.calcite.rex.<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></h3> |
| <code><a href="RexNode.html#isA(java.util.Collection)">isA</a>, <a href="RexNode.html#isA(org.apache.calcite.sql.SqlKind)">isA</a>, <a href="RexNode.html#isAlwaysFalse()">isAlwaysFalse</a>, <a href="RexNode.html#isAlwaysTrue()">isAlwaysTrue</a>, <a href="RexNode.html#toString()">toString</a></code></li> |
| </ul> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="field.detail"> |
| <!-- --> |
| </a> |
| <h3>Field Detail</h3> |
| <a id="NAMES"> |
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| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>NAMES</h4> |
| <pre>private static final java.util.List<java.lang.String> NAMES</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a id="<init>(int,org.apache.calcite.rel.type.RelDataType)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>RexInputRef</h4> |
| <pre>public RexInputRef​(int index, |
| <a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> type)</pre> |
| <div class="block">Creates an input variable.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>index</code> - Index of the field in the underlying row-type</dd> |
| <dd><code>type</code> - Type of the column</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ============ METHOD DETAIL ========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a id="equals(java.lang.Object)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>equals</h4> |
| <pre class="methodSignature">public boolean equals​(java.lang.Object obj)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="RexNode.html#equals(java.lang.Object)">RexNode</a></code></span></div> |
| <div class="block"> |
| |
| <p>Every node must implement <a href="RexNode.html#equals(java.lang.Object)"><code>RexNode.equals(java.lang.Object)</code></a> based on its content</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="RexNode.html#equals(java.lang.Object)">equals</a></code> in class <code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="hashCode()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>hashCode</h4> |
| <pre class="methodSignature">public int hashCode()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="RexNode.html#hashCode()">RexNode</a></code></span></div> |
| <div class="block"> |
| |
| <p>Every node must implement <a href="RexNode.html#hashCode()"><code>RexNode.hashCode()</code></a> consistent with |
| <a href="RexNode.html#equals(java.lang.Object)"><code>RexNode.equals(java.lang.Object)</code></a></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="RexNode.html#hashCode()">hashCode</a></code> in class <code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="of(int,org.apache.calcite.rel.type.RelDataType)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>of</h4> |
| <pre class="methodSignature">public static <a href="RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a> of​(int index, |
| <a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> rowType)</pre> |
| <div class="block">Creates a reference to a given field in a row type.</div> |
| </li> |
| </ul> |
| <a id="of(int,java.util.List)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>of</h4> |
| <pre class="methodSignature">public static <a href="RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a> of​(int index, |
| java.util.List<<a href="../rel/type/RelDataTypeField.html" title="interface in org.apache.calcite.rel.type">RelDataTypeField</a>> fields)</pre> |
| <div class="block">Creates a reference to a given field in a list of fields.</div> |
| </li> |
| </ul> |
| <a id="of2(int,java.util.List)"> |
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| </a> |
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| <h4>of2</h4> |
| <pre class="methodSignature">public static <a href="../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,​java.lang.String> of2​(int index, |
| java.util.List<<a href="../rel/type/RelDataTypeField.html" title="interface in org.apache.calcite.rel.type">RelDataTypeField</a>> fields)</pre> |
| <div class="block">Creates a reference to a given field in a list of fields.</div> |
| </li> |
| </ul> |
| <a id="getKind()"> |
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| </a> |
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| <h4>getKind</h4> |
| <pre class="methodSignature">public <a href="../sql/SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> getKind()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="RexNode.html#getKind()">RexNode</a></code></span></div> |
| <div class="block">Returns the kind of node this is.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="RexNode.html#getKind()">getKind</a></code> in class <code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Node kind, never null</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="accept(org.apache.calcite.rex.RexVisitor)"> |
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| </a> |
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| <h4>accept</h4> |
| <pre class="methodSignature">public <R> R accept​(<a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a><R> visitor)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="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="RexVisitor.html#visitInputRef(org.apache.calcite.rex.RexInputRef)"><code>visitXxx</code></a> method. |
| |
| <p>Also see <a href="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">Specified by:</span></dt> |
| <dd><code><a href="RexNode.html#accept(org.apache.calcite.rex.RexVisitor)">accept</a></code> in class <code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="accept(org.apache.calcite.rex.RexBiVisitor,java.lang.Object)"> |
| <!-- --> |
| </a><a id="accept(org.apache.calcite.rex.RexBiVisitor,P)"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>accept</h4> |
| <pre class="methodSignature">public <R,​P> R accept​(<a href="RexBiVisitor.html" title="interface in org.apache.calcite.rex">RexBiVisitor</a><R,​P> visitor, |
| P arg)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="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="RexBiVisitor.html#visitInputRef(org.apache.calcite.rex.RexInputRef,P)"><code>RexBiVisitor.visitInputRef(RexInputRef, Object)</code></a> visitXxx} method.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="RexNode.html#accept(org.apache.calcite.rex.RexBiVisitor,P)">accept</a></code> in class <code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="createName(int)"> |
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| <li class="blockList"> |
| <h4>createName</h4> |
| <pre class="methodSignature">public static java.lang.String createName​(int index)</pre> |
| <div class="block">Creates a name for an input reference, of the form "$index". If the index |
| is low, uses a cache of common names, to reduce gc.</div> |
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