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| <li>Summary: </li> |
| <li>Nested | </li> |
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| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.calcite.linq4j.tree</a></div> |
| <h1 title="Class Expression" class="title">Class Expression</h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a> |
| <div class="inheritance"><a href="AbstractNode.html" title="class in org.apache.calcite.linq4j.tree">org.apache.calcite.linq4j.tree.AbstractNode</a> |
| <div class="inheritance">org.apache.calcite.linq4j.tree.Expression</div> |
| </div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="Node.html" title="interface in org.apache.calcite.linq4j.tree">Node</a></code></dd> |
| </dl> |
| <dl class="notes"> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><code><a href="BinaryExpression.html" title="class in org.apache.calcite.linq4j.tree">BinaryExpression</a></code>, <code><a href="ConstantExpression.html" title="class in org.apache.calcite.linq4j.tree">ConstantExpression</a></code>, <code><a href="DefaultExpression.html" title="class in org.apache.calcite.linq4j.tree">DefaultExpression</a></code>, <code><a href="DynamicExpression.html" title="class in org.apache.calcite.linq4j.tree">DynamicExpression</a></code>, <code><a href="IndexExpression.html" title="class in org.apache.calcite.linq4j.tree">IndexExpression</a></code>, <code><a href="InvocationExpression.html" title="class in org.apache.calcite.linq4j.tree">InvocationExpression</a></code>, <code><a href="LambdaExpression.html" title="class in org.apache.calcite.linq4j.tree">LambdaExpression</a></code>, <code><a href="ListInitExpression.html" title="class in org.apache.calcite.linq4j.tree">ListInitExpression</a></code>, <code><a href="MemberExpression.html" title="class in org.apache.calcite.linq4j.tree">MemberExpression</a></code>, <code><a href="MemberInitExpression.html" title="class in org.apache.calcite.linq4j.tree">MemberInitExpression</a></code>, <code><a href="MethodCallExpression.html" title="class in org.apache.calcite.linq4j.tree">MethodCallExpression</a></code>, <code><a href="NewArrayExpression.html" title="class in org.apache.calcite.linq4j.tree">NewArrayExpression</a></code>, <code><a href="NewExpression.html" title="class in org.apache.calcite.linq4j.tree">NewExpression</a></code>, <code><a href="ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a></code>, <code><a href="TernaryExpression.html" title="class in org.apache.calcite.linq4j.tree">TernaryExpression</a></code>, <code><a href="TypeBinaryExpression.html" title="class in org.apache.calcite.linq4j.tree">TypeBinaryExpression</a></code>, <code><a href="UnaryExpression.html" title="class in org.apache.calcite.linq4j.tree">UnaryExpression</a></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">Expression</span> |
| <span class="extends-implements">extends <a href="AbstractNode.html" title="class in org.apache.calcite.linq4j.tree">AbstractNode</a></span></div> |
| <div class="block"><p>Analogous to LINQ's System.Linq.Expression.</p></div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <li> |
| <section class="field-summary" id="field-summary"> |
| <h2>Field Summary</h2> |
| <div class="inherited-list"> |
| <h3 id="fields-inherited-from-class-org.apache.calcite.linq4j.tree.AbstractNode">Fields inherited from class org.apache.calcite.linq4j.tree.<a href="AbstractNode.html" title="class in org.apache.calcite.linq4j.tree">AbstractNode</a></h3> |
| <code><a href="AbstractNode.html#nodeType">nodeType</a>, <a href="AbstractNode.html#type">type</a></code></div> |
| </section> |
| </li> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <li> |
| <section class="constructor-summary" id="constructor-summary"> |
| <h2>Constructor Summary</h2> |
| <div class="caption"><span>Constructors</span></div> |
| <div class="summary-table three-column-summary"> |
| <div class="table-header col-first">Modifier</div> |
| <div class="table-header col-second">Constructor</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color"><code>protected </code></div> |
| <div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E(org.apache.calcite.linq4j.tree.ExpressionType,java.lang.reflect.Type)" class="member-name-link">Expression</a><wbr>(<a href="ExpressionType.html" title="enum in org.apache.calcite.linq4j.tree">ExpressionType</a> nodeType, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/reflect/Type.html" title="class or interface in java.lang.reflect" class="external-link">Type</a> type)</code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Creates an Expression.</div> |
| </div> |
| </div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <li> |
| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
| <div id="method-summary-table"> |
| <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab3" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab3', 3)" class="table-tab">Abstract Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div> |
| <div id="method-summary-table.tabpanel" role="tabpanel"> |
| <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>abstract <a href="Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#accept(org.apache.calcite.linq4j.tree.Shuttle)" class="member-name-link">accept</a><wbr>(<a href="Shuttle.html" title="class in org.apache.calcite.linq4j.tree">Shuttle</a> shuttle)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#canReduce()" class="member-name-link">canReduce</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Indicates that the node can be reduced to a simpler node.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.calcite.linq4j.tree.AbstractNode">Methods inherited from class org.apache.calcite.linq4j.tree.<a href="AbstractNode.html" title="class in org.apache.calcite.linq4j.tree">AbstractNode</a></h3> |
| <code><a href="AbstractNode.html#accept(org.apache.calcite.linq4j.tree.ExpressionWriter)">accept</a>, <a href="AbstractNode.html#equals(java.lang.Object)">equals</a>, <a href="AbstractNode.html#evaluate(org.apache.calcite.linq4j.tree.Evaluator)">evaluate</a>, <a href="AbstractNode.html#getNodeType()">getNodeType</a>, <a href="AbstractNode.html#getType()">getType</a>, <a href="AbstractNode.html#hashCode()">hashCode</a>, <a href="AbstractNode.html#toString()">toString</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.calcite.linq4j.tree.Node">Methods inherited from interface org.apache.calcite.linq4j.tree.<a href="Node.html" title="interface in org.apache.calcite.linq4j.tree">Node</a></h3> |
| <code><a href="Node.html#accept(org.apache.calcite.linq4j.tree.Visitor)">accept</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <li> |
| <section class="constructor-details" id="constructor-detail"> |
| <h2>Constructor Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="<init>(org.apache.calcite.linq4j.tree.ExpressionType,java.lang.reflect.Type)"> |
| <h3>Expression</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="element-name">Expression</span><wbr><span class="parameters">(<a href="ExpressionType.html" title="enum in org.apache.calcite.linq4j.tree">ExpressionType</a> nodeType, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/reflect/Type.html" title="class or interface in java.lang.reflect" class="external-link">Type</a> type)</span></div> |
| <div class="block">Creates an Expression. |
| |
| <p>The type of the expression may, at the caller's discretion, be a |
| regular class (because <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link"><code>Class</code></a> implements <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/reflect/Type.html" title="class or interface in java.lang.reflect" class="external-link"><code>Type</code></a>) or it may |
| be a different implementation that retains information about type |
| parameters.</p></div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>nodeType</code> - Node type</dd> |
| <dd><code>type</code> - Type of the expression</dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="accept(org.apache.calcite.linq4j.tree.Shuttle)"> |
| <h3>accept</h3> |
| <div class="member-signature"><span class="modifiers">public abstract</span> <span class="return-type"><a href="Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></span> <span class="element-name">accept</span><wbr><span class="parameters">(<a href="Shuttle.html" title="class in org.apache.calcite.linq4j.tree">Shuttle</a> shuttle)</span></div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="Node.html#accept(org.apache.calcite.linq4j.tree.Shuttle)">accept</a></code> in interface <code><a href="Node.html" title="interface in org.apache.calcite.linq4j.tree">Node</a></code></dd> |
| <dt>Overrides:</dt> |
| <dd><code><a href="AbstractNode.html#accept(org.apache.calcite.linq4j.tree.Shuttle)">accept</a></code> in class <code><a href="AbstractNode.html" title="class in org.apache.calcite.linq4j.tree">AbstractNode</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="canReduce()"> |
| <h3>canReduce</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type">boolean</span> <span class="element-name">canReduce</span>()</div> |
| <div class="block">Indicates that the node can be reduced to a simpler node. If this |
| returns true, Reduce() can be called to produce the reduced form.</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </section> |
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