| <!DOCTYPE HTML> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (17) --> |
| <title>ReduceExpressionsRule (Apache Calcite API)</title> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <meta name="description" content="declaration: package: org.apache.calcite.rel.rules, class: ReduceExpressionsRule"> |
| <meta name="generator" content="javadoc/ClassWriterImpl"> |
| <link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../../script-dir/jquery-ui.min.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../../jquery-ui.overrides.css" title="Style"> |
| <script type="text/javascript" src="../../../../../script.js"></script> |
| <script type="text/javascript" src="../../../../../script-dir/jquery-3.5.1.min.js"></script> |
| <script type="text/javascript" src="../../../../../script-dir/jquery-ui.min.js"></script> |
| </head> |
| <body class="class-declaration-page"> |
| <script type="text/javascript">var evenRowColor = "even-row-color"; |
| var oddRowColor = "odd-row-color"; |
| var tableTab = "table-tab"; |
| var activeTableTab = "active-table-tab"; |
| var pathtoroot = "../../../../../"; |
| loadScripts(document, 'script');</script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <div class="flex-box"> |
| <header role="banner" class="flex-header"> |
| <nav role="navigation"> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="top-nav" id="navbar-top"> |
| <div class="skip-nav"><a href="#skip-navbar-top" title="Skip navigation links">Skip navigation links</a></div> |
| <div class="about-language"><b>Apache Calcite</b></div> |
| <ul id="navbar-top-firstrow" class="nav-list" title="Navigation"> |
| <li><a href="../../../../../index.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="nav-bar-cell1-rev">Class</li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../help-doc.html#class">Help</a></li> |
| </ul> |
| </div> |
| <div class="sub-nav"> |
| <div> |
| <ul class="sub-nav-list"> |
| <li>Summary: </li> |
| <li><a href="#nested-class-summary">Nested</a> | </li> |
| <li><a href="#field-summary">Field</a> | </li> |
| <li><a href="#constructor-summary">Constr</a> | </li> |
| <li><a href="#method-summary">Method</a></li> |
| </ul> |
| <ul class="sub-nav-list"> |
| <li>Detail: </li> |
| <li><a href="#field-detail">Field</a> | </li> |
| <li><a href="#constructor-detail">Constr</a> | </li> |
| <li><a href="#method-detail">Method</a></li> |
| </ul> |
| </div> |
| <div class="nav-list-search"><label for="search-input">SEARCH:</label> |
| <input type="text" id="search-input" value="search" disabled="disabled"> |
| <input type="reset" id="reset-button" value="reset" disabled="disabled"> |
| </div> |
| </div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <span class="skip-nav" id="skip-navbar-top"></span></nav> |
| </header> |
| <div class="flex-content"> |
| <main role="main"> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.calcite.rel.rules</a></div> |
| <h1 title="Class ReduceExpressionsRule" class="title">Class ReduceExpressionsRule<C extends <a href="ReduceExpressionsRule.Config.html" title="interface in org.apache.calcite.rel.rules">ReduceExpressionsRule.Config</a>></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="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">org.apache.calcite.plan.RelOptRule</a> |
| <div class="inheritance"><a href="../../plan/RelRule.html" title="class in org.apache.calcite.plan">org.apache.calcite.plan.RelRule</a><C> |
| <div class="inheritance">org.apache.calcite.rel.rules.ReduceExpressionsRule<C></div> |
| </div> |
| </div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>Type Parameters:</dt> |
| <dd><code>C</code> - Configuration type</dd> |
| </dl> |
| <dl class="notes"> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="SubstitutionRule.html" title="interface in org.apache.calcite.rel.rules">SubstitutionRule</a></code>, <code><a href="TransformationRule.html" title="interface in org.apache.calcite.rel.rules">TransformationRule</a></code></dd> |
| </dl> |
| <dl class="notes"> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><code><a href="ReduceExpressionsRule.CalcReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.CalcReduceExpressionsRule</a></code>, <code><a href="ReduceExpressionsRule.FilterReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.FilterReduceExpressionsRule</a></code>, <code><a href="ReduceExpressionsRule.JoinReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.JoinReduceExpressionsRule</a></code>, <code><a href="ReduceExpressionsRule.ProjectReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.ProjectReduceExpressionsRule</a></code>, <code><a href="ReduceExpressionsRule.WindowReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.WindowReduceExpressionsRule</a></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">ReduceExpressionsRule<C extends <a href="ReduceExpressionsRule.Config.html" title="interface in org.apache.calcite.rel.rules">ReduceExpressionsRule.Config</a>></span> |
| <span class="extends-implements">extends <a href="../../plan/RelRule.html" title="class in org.apache.calcite.plan">RelRule</a><C> |
| implements <a href="SubstitutionRule.html" title="interface in org.apache.calcite.rel.rules">SubstitutionRule</a></span></div> |
| <div class="block">Collection of planner rules that apply various simplifying transformations on |
| RexNode trees. Currently, there are two transformations: |
| |
| <ul> |
| <li>Constant reduction, which evaluates constant subtrees, replacing them |
| with a corresponding RexLiteral |
| <li>Removal of redundant casts, which occurs when the argument into the cast |
| is the same as the type of the resulting cast expression |
| </ul></div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- ======== NESTED CLASS SUMMARY ======== --> |
| <li> |
| <section class="nested-class-summary" id="nested-class-summary"> |
| <h2>Nested Class Summary</h2> |
| <div class="caption"><span>Nested Classes</span></div> |
| <div class="summary-table three-column-summary"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Class</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color"><code>static class </code></div> |
| <div class="col-second even-row-color"><code><a href="ReduceExpressionsRule.CalcReduceExpressionsRule.html" class="type-name-link" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.CalcReduceExpressionsRule</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Rule that reduces constants inside a <a href="../core/Calc.html" title="class in org.apache.calcite.rel.core"><code>Calc</code></a>.</div> |
| </div> |
| <div class="col-first odd-row-color"><code>protected static class </code></div> |
| <div class="col-second odd-row-color"><code><a href="ReduceExpressionsRule.CaseShuttle.html" class="type-name-link" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.CaseShuttle</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Shuttle that pushes predicates into a CASE.</div> |
| </div> |
| <div class="col-first even-row-color"><code>static interface </code></div> |
| <div class="col-second even-row-color"><code><a href="ReduceExpressionsRule.Config.html" class="type-name-link" title="interface in org.apache.calcite.rel.rules">ReduceExpressionsRule.Config</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Rule configuration.</div> |
| </div> |
| <div class="col-first odd-row-color"><code>static class </code></div> |
| <div class="col-second odd-row-color"><code><a href="ReduceExpressionsRule.FilterReduceExpressionsRule.html" class="type-name-link" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.FilterReduceExpressionsRule</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Rule that reduces constants inside a <a href="../core/Filter.html" title="class in org.apache.calcite.rel.core"><code>Filter</code></a>.</div> |
| </div> |
| <div class="col-first even-row-color"><code>static class </code></div> |
| <div class="col-second even-row-color"><code><a href="ReduceExpressionsRule.JoinReduceExpressionsRule.html" class="type-name-link" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.JoinReduceExpressionsRule</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Rule that reduces constants inside a <a href="../core/Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a>.</div> |
| </div> |
| <div class="col-first odd-row-color"><code>static class </code></div> |
| <div class="col-second odd-row-color"><code><a href="ReduceExpressionsRule.ProjectReduceExpressionsRule.html" class="type-name-link" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.ProjectReduceExpressionsRule</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Rule that reduces constants inside a |
| <a href="../core/Project.html" title="class in org.apache.calcite.rel.core"><code>Project</code></a>.</div> |
| </div> |
| <div class="col-first even-row-color"><code>protected static class </code></div> |
| <div class="col-second even-row-color"><code><a href="ReduceExpressionsRule.ReducibleExprLocator.html" class="type-name-link" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.ReducibleExprLocator</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Helper class used to locate expressions that either can be reduced to |
| literals or contain redundant casts.</div> |
| </div> |
| <div class="col-first odd-row-color"><code>protected static class </code></div> |
| <div class="col-second odd-row-color"><code><a href="ReduceExpressionsRule.RexReplacer.html" class="type-name-link" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.RexReplacer</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Replaces expressions with their reductions.</div> |
| </div> |
| <div class="col-first even-row-color"><code>static class </code></div> |
| <div class="col-second even-row-color"><code><a href="ReduceExpressionsRule.WindowReduceExpressionsRule.html" class="type-name-link" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.WindowReduceExpressionsRule</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Rule that reduces constants inside a <a href="../core/Window.html" title="class in org.apache.calcite.rel.core"><code>Window</code></a>.</div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h2 id="nested-classes-inherited-from-class-org.apache.calcite.plan.RelRule">Nested classes/interfaces inherited from class org.apache.calcite.plan.<a href="../../plan/RelRule.html" title="class in org.apache.calcite.plan">RelRule</a></h2> |
| <code><a href="../../plan/RelRule.Done.html" title="interface in org.apache.calcite.plan">RelRule.Done</a>, <a href="../../plan/RelRule.MatchHandler.html" title="interface in org.apache.calcite.plan">RelRule.MatchHandler</a><<a href="../../plan/RelRule.MatchHandler.html" title="type parameter in RelRule.MatchHandler">R</a> extends <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a>>, <a href="../../plan/RelRule.OperandBuilder.html" title="interface in org.apache.calcite.plan">RelRule.OperandBuilder</a>, <a href="../../plan/RelRule.OperandDetailBuilder.html" title="interface in org.apache.calcite.plan">RelRule.OperandDetailBuilder</a><<a href="../../plan/RelRule.OperandDetailBuilder.html" title="type parameter in RelRule.OperandDetailBuilder">R</a> extends <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>>, <a href="../../plan/RelRule.OperandTransform.html" title="interface in org.apache.calcite.plan">RelRule.OperandTransform</a></code></div> |
| <div class="inherited-list"> |
| <h2 id="nested-classes-inherited-from-class-org.apache.calcite.plan.RelOptRule">Nested classes/interfaces inherited from class org.apache.calcite.plan.<a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></h2> |
| <code><a href="../../plan/RelOptRule.ConverterRelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRule.ConverterRelOptRuleOperand</a></code></div> |
| </section> |
| </li> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <li> |
| <section class="field-summary" id="field-summary"> |
| <h2>Field Summary</h2> |
| <div class="caption"><span>Fields</span></div> |
| <div class="summary-table three-column-summary"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Field</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color"><code>static final <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/regex/Pattern.html" title="class or interface in java.util.regex" class="external-link">Pattern</a></code></div> |
| <div class="col-second even-row-color"><code><a href="#EXCLUSION_PATTERN" class="member-name-link">EXCLUSION_PATTERN</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Regular expression that matches the description of all instances of this |
| rule and <a href="ValuesReduceRule.html" title="class in org.apache.calcite.rel.rules"><code>ValuesReduceRule</code></a> also.</div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="fields-inherited-from-class-org.apache.calcite.plan.RelRule">Fields inherited from class org.apache.calcite.plan.<a href="../../plan/RelRule.html" title="class in org.apache.calcite.plan">RelRule</a></h3> |
| <code><a href="../../plan/RelRule.html#config">config</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="fields-inherited-from-class-org.apache.calcite.plan.RelOptRule">Fields inherited from class org.apache.calcite.plan.<a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></h3> |
| <code><a href="../../plan/RelOptRule.html#description">description</a>, <a href="../../plan/RelOptRule.html#operands">operands</a>, <a href="../../plan/RelOptRule.html#relBuilderFactory">relBuilderFactory</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(C)" class="member-name-link">ReduceExpressionsRule</a><wbr>(<a href="ReduceExpressionsRule.html" title="type parameter in ReduceExpressionsRule">C</a> config)</code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">Creates a ReduceExpressionsRule.</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-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static 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><button id="method-summary-table-tab6" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab6', 3)" class="table-tab">Deprecated 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-tab1 method-summary-table-tab4"><code>protected static void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#findReducibleExps(org.apache.calcite.rel.type.RelDataTypeFactory,java.util.List,com.google.common.collect.ImmutableMap,java.util.List,java.util.List,boolean)" class="member-name-link">findReducibleExps</a><wbr>(<a href="../type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a> typeFactory, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> exps, |
| com.google.common.collect.ImmutableMap<<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,<wbr><a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> constants, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> constExps, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Boolean.html" title="class or interface in java.lang" class="external-link">Boolean</a>> addCasts, |
| boolean treatDynamicCallsAsConstant)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Locates expressions that can be reduced to literals or converted to |
| expressions with redundant casts removed.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4 method-summary-table-tab6"><code>static <C extends <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>><br>com.google.common.collect.ImmutableMap<<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,<wbr>C></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4 method-summary-table-tab6"><code><a href="#predicateConstants(java.lang.Class,org.apache.calcite.rex.RexBuilder,org.apache.calcite.plan.RelOptPredicateList)" class="member-name-link">predicateConstants</a><wbr>(<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">Class</a><C> clazz, |
| <a href="../../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a> rexBuilder, |
| <a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4 method-summary-table-tab6"> |
| <div class="block"><span class="deprecated-label">Deprecated.</span> |
| <div class="deprecation-comment">Use <a href="../../plan/RelOptPredicateList.html#constantMap"><code>RelOptPredicateList.constantMap</code></a></div> |
| </div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="../../rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#pushPredicateIntoCase(org.apache.calcite.rex.RexCall)" class="member-name-link">pushPredicateIntoCase</a><wbr>(<a href="../../rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a> call)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Pushes predicates into a CASE.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>protected static boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#reduceExpressions(org.apache.calcite.rel.RelNode,java.util.List,org.apache.calcite.plan.RelOptPredicateList)" class="member-name-link">reduceExpressions</a><wbr>(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Reduces a list of expressions.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4 method-summary-table-tab6"><code>protected static boolean</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4 method-summary-table-tab6"><code><a href="#reduceExpressions(org.apache.calcite.rel.RelNode,java.util.List,org.apache.calcite.plan.RelOptPredicateList,boolean)" class="member-name-link">reduceExpressions</a><wbr>(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates, |
| boolean unknownAsFalse)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4 method-summary-table-tab6"> |
| <div class="block"><span class="deprecated-label">Deprecated.</span></div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>protected static boolean</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#reduceExpressions(org.apache.calcite.rel.RelNode,java.util.List,org.apache.calcite.plan.RelOptPredicateList,boolean,boolean,boolean)" class="member-name-link">reduceExpressions</a><wbr>(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates, |
| boolean unknownAsFalse, |
| boolean matchNullability, |
| boolean treatDynamicCallsAsConstant)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Reduces a list of expressions.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>protected static boolean</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#reduceExpressionsInternal(org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexSimplify,org.apache.calcite.rex.RexUnknownAs,java.util.List,org.apache.calcite.plan.RelOptPredicateList,boolean)" class="member-name-link">reduceExpressionsInternal</a><wbr>(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="../../rex/RexSimplify.html" title="class in org.apache.calcite.rex">RexSimplify</a> simplify, |
| <a href="../../rex/RexUnknownAs.html" title="enum in org.apache.calcite.rex">RexUnknownAs</a> unknownAs, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates, |
| boolean treatDynamicCallsAsConstant)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>protected static <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#substitute(org.apache.calcite.rex.RexCall,int,org.apache.calcite.rex.RexNode)" class="member-name-link">substitute</a><wbr>(<a href="../../rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a> call, |
| int ordinal, |
| <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> node)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Converts op(arg0, ..., argOrdinal, ..., argN) to op(arg0,..., node, ..., argN).</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.calcite.plan.RelOptRule">Methods inherited from class org.apache.calcite.plan.<a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></h3> |
| <code><a href="../../plan/RelOptRule.html#any()">any</a>, <a href="../../plan/RelOptRule.html#convert(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelTrait)">convert</a>, <a href="../../plan/RelOptRule.html#convert(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelTraitSet)">convert</a>, <a href="../../plan/RelOptRule.html#convertList(java.util.List,org.apache.calcite.plan.RelTrait)">convertList</a>, <a href="../../plan/RelOptRule.html#convertOperand(java.lang.Class,com.google.common.base.Predicate,org.apache.calcite.plan.RelTrait)">convertOperand</a>, <a href="../../plan/RelOptRule.html#convertOperand(java.lang.Class,java.util.function.Predicate,org.apache.calcite.plan.RelTrait)">convertOperand</a>, <a href="../../plan/RelOptRule.html#equals(java.lang.Object)">equals</a>, <a href="../../plan/RelOptRule.html#equals(org.apache.calcite.plan.RelOptRule)">equals</a>, <a href="../../plan/RelOptRule.html#getOperand()">getOperand</a>, <a href="../../plan/RelOptRule.html#getOperands()">getOperands</a>, <a href="../../plan/RelOptRule.html#getOutConvention()">getOutConvention</a>, <a href="../../plan/RelOptRule.html#getOutTrait()">getOutTrait</a>, <a href="../../plan/RelOptRule.html#hashCode()">hashCode</a>, <a href="../../plan/RelOptRule.html#matches(org.apache.calcite.plan.RelOptRuleCall)">matches</a>, <a href="../../plan/RelOptRule.html#none()">none</a>, <a href="../../plan/RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)">onMatch</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,com.google.common.base.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,com.google.common.base.Predicate,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../../plan/RelOptRule.html#operandJ(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildren)">operandJ</a>, <a href="../../plan/RelOptRule.html#operandJ(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operandJ</a>, <a href="../../plan/RelOptRule.html#some(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">some</a>, <a href="../../plan/RelOptRule.html#toString()">toString</a>, <a href="../../plan/RelOptRule.html#unordered(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">unordered</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.rel.rules.SubstitutionRule">Methods inherited from interface org.apache.calcite.rel.rules.<a href="SubstitutionRule.html" title="interface in org.apache.calcite.rel.rules">SubstitutionRule</a></h3> |
| <code><a href="SubstitutionRule.html#autoPruneOld()">autoPruneOld</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <li> |
| <section class="field-details" id="field-detail"> |
| <h2>Field Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="EXCLUSION_PATTERN"> |
| <h3>EXCLUSION_PATTERN</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/regex/Pattern.html" title="class or interface in java.util.regex" class="external-link">Pattern</a></span> <span class="element-name">EXCLUSION_PATTERN</span></div> |
| <div class="block">Regular expression that matches the description of all instances of this |
| rule and <a href="ValuesReduceRule.html" title="class in org.apache.calcite.rel.rules"><code>ValuesReduceRule</code></a> also. Use |
| it to prevent the planner from invoking these rules.</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <li> |
| <section class="constructor-details" id="constructor-detail"> |
| <h2>Constructor Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="<init>(C)"> |
| <h3 id="<init>(org.apache.calcite.rel.rules.ReduceExpressionsRule.Config)">ReduceExpressionsRule</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="element-name">ReduceExpressionsRule</span><wbr><span class="parameters">(<a href="ReduceExpressionsRule.html" title="type parameter in ReduceExpressionsRule">C</a> config)</span></div> |
| <div class="block">Creates a ReduceExpressionsRule.</div> |
| </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="reduceExpressions(org.apache.calcite.rel.RelNode,java.util.List,org.apache.calcite.plan.RelOptPredicateList)"> |
| <h3>reduceExpressions</h3> |
| <div class="member-signature"><span class="modifiers">protected static</span> <span class="return-type">boolean</span> <span class="element-name">reduceExpressions</span><wbr><span class="parameters">(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates)</span></div> |
| <div class="block">Reduces a list of expressions.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>rel</code> - Relational expression</dd> |
| <dd><code>expList</code> - List of expressions, modified in place</dd> |
| <dd><code>predicates</code> - Constraints known to hold on input expressions</dd> |
| <dt>Returns:</dt> |
| <dd>whether reduction found something to change, and succeeded</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="reduceExpressions(org.apache.calcite.rel.RelNode,java.util.List,org.apache.calcite.plan.RelOptPredicateList,boolean)"> |
| <h3>reduceExpressions</h3> |
| <div class="member-signature"><span class="annotations"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Deprecated.html" title="class or interface in java.lang" class="external-link">@Deprecated</a> |
| </span><span class="modifiers">protected static</span> <span class="return-type">boolean</span> <span class="element-name">reduceExpressions</span><wbr><span class="parameters">(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates, |
| boolean unknownAsFalse)</span></div> |
| <div class="deprecation-block"><span class="deprecated-label">Deprecated.</span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="reduceExpressions(org.apache.calcite.rel.RelNode,java.util.List,org.apache.calcite.plan.RelOptPredicateList,boolean,boolean,boolean)"> |
| <h3>reduceExpressions</h3> |
| <div class="member-signature"><span class="modifiers">protected static</span> <span class="return-type">boolean</span> <span class="element-name">reduceExpressions</span><wbr><span class="parameters">(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates, |
| boolean unknownAsFalse, |
| boolean matchNullability, |
| boolean treatDynamicCallsAsConstant)</span></div> |
| <div class="block">Reduces a list of expressions. |
| |
| <p>The <code>matchNullability</code> flag comes into play when reducing a |
| expression whose type is nullable. Suppose we are reducing an expression |
| <code>CASE WHEN 'a' = 'a' THEN 1 ELSE NULL END</code>. Before reduction the |
| type is <code>INTEGER</code> (nullable), but after reduction the literal 1 has |
| type <code>INTEGER NOT NULL</code>. |
| |
| <p>In some situations it is more important to preserve types; in this |
| case you should use <code>matchNullability = true</code> (which used to be |
| the default behavior of this method), and it will cast the literal to |
| <code>INTEGER</code> (nullable). |
| |
| <p>In other situations, you would rather propagate the new stronger type, |
| because it may allow further optimizations later; pass |
| <code>matchNullability = false</code> and no cast will be added, but you may |
| need to adjust types elsewhere in the expression tree.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>rel</code> - Relational expression</dd> |
| <dd><code>expList</code> - List of expressions, modified in place</dd> |
| <dd><code>predicates</code> - Constraints known to hold on input expressions</dd> |
| <dd><code>unknownAsFalse</code> - Whether UNKNOWN will be treated as FALSE</dd> |
| <dd><code>matchNullability</code> - Whether Calcite should add a CAST to a literal |
| resulting from simplification and expression if the |
| expression had nullable type and the literal is |
| NOT NULL</dd> |
| <dd><code>treatDynamicCallsAsConstant</code> - Whether to treat dynamic functions as |
| constants</dd> |
| <dt>Returns:</dt> |
| <dd>whether reduction found something to change, and succeeded</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="reduceExpressionsInternal(org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexSimplify,org.apache.calcite.rex.RexUnknownAs,java.util.List,org.apache.calcite.plan.RelOptPredicateList,boolean)"> |
| <h3>reduceExpressionsInternal</h3> |
| <div class="member-signature"><span class="modifiers">protected static</span> <span class="return-type">boolean</span> <span class="element-name">reduceExpressionsInternal</span><wbr><span class="parameters">(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="../../rex/RexSimplify.html" title="class in org.apache.calcite.rex">RexSimplify</a> simplify, |
| <a href="../../rex/RexUnknownAs.html" title="enum in org.apache.calcite.rex">RexUnknownAs</a> unknownAs, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates, |
| boolean treatDynamicCallsAsConstant)</span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="findReducibleExps(org.apache.calcite.rel.type.RelDataTypeFactory,java.util.List,com.google.common.collect.ImmutableMap,java.util.List,java.util.List,boolean)"> |
| <h3>findReducibleExps</h3> |
| <div class="member-signature"><span class="modifiers">protected static</span> <span class="return-type">void</span> <span class="element-name">findReducibleExps</span><wbr><span class="parameters">(<a href="../type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a> typeFactory, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> exps, |
| com.google.common.collect.ImmutableMap<<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,<wbr><a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> constants, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> constExps, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Boolean.html" title="class or interface in java.lang" class="external-link">Boolean</a>> addCasts, |
| boolean treatDynamicCallsAsConstant)</span></div> |
| <div class="block">Locates expressions that can be reduced to literals or converted to |
| expressions with redundant casts removed.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>typeFactory</code> - Type factory</dd> |
| <dd><code>exps</code> - list of candidate expressions to be examined for |
| reduction</dd> |
| <dd><code>constants</code> - List of expressions known to be constant</dd> |
| <dd><code>constExps</code> - returns the list of expressions that can be constant |
| reduced</dd> |
| <dd><code>addCasts</code> - indicator for each expression that can be constant |
| reduced, whether a cast of the resulting reduced |
| expression is potentially necessary</dd> |
| <dd><code>treatDynamicCallsAsConstant</code> - Whether to treat dynamic functions as |
| constants</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="predicateConstants(java.lang.Class,org.apache.calcite.rex.RexBuilder,org.apache.calcite.plan.RelOptPredicateList)"> |
| <h3>predicateConstants</h3> |
| <div class="member-signature"><span class="annotations"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Deprecated.html" title="class or interface in java.lang" class="external-link">@Deprecated</a> |
| </span><span class="modifiers">public static</span> <span class="type-parameters"><C extends <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>></span> |
| <span class="return-type">com.google.common.collect.ImmutableMap<<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,<wbr>C></span> <span class="element-name">predicateConstants</span><wbr><span class="parameters">(<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">Class</a><C> clazz, |
| <a href="../../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a> rexBuilder, |
| <a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates)</span></div> |
| <div class="deprecation-block"><span class="deprecated-label">Deprecated.</span> |
| <div class="deprecation-comment">Use <a href="../../plan/RelOptPredicateList.html#constantMap"><code>RelOptPredicateList.constantMap</code></a></div> |
| </div> |
| <div class="block">Creates a map containing each (e, constant) pair that occurs within |
| a predicate list.</div> |
| <dl class="notes"> |
| <dt>Type Parameters:</dt> |
| <dd><code>C</code> - what to consider a constant: <a href="../../rex/RexLiteral.html" title="class in org.apache.calcite.rex"><code>RexLiteral</code></a> to use a narrow |
| definition of constant, or <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a> to use |
| <a href="../../rex/RexUtil.html#isConstant(org.apache.calcite.rex.RexNode)"><code>RexUtil.isConstant(RexNode)</code></a></dd> |
| <dt>Parameters:</dt> |
| <dd><code>clazz</code> - Class of expression that is considered constant</dd> |
| <dd><code>rexBuilder</code> - Rex builder</dd> |
| <dd><code>predicates</code> - Predicate list</dd> |
| <dt>Returns:</dt> |
| <dd>Map from values to constants</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="pushPredicateIntoCase(org.apache.calcite.rex.RexCall)"> |
| <h3>pushPredicateIntoCase</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="../../rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a></span> <span class="element-name">pushPredicateIntoCase</span><wbr><span class="parameters">(<a href="../../rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a> call)</span></div> |
| <div class="block">Pushes predicates into a CASE. |
| |
| <p>We have a loose definition of 'predicate': any boolean expression will |
| do, except CASE. For example '(CASE ...) = 5' or '(CASE ...) IS NULL'.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="substitute(org.apache.calcite.rex.RexCall,int,org.apache.calcite.rex.RexNode)"> |
| <h3>substitute</h3> |
| <div class="member-signature"><span class="modifiers">protected static</span> <span class="return-type"><a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></span> <span class="element-name">substitute</span><wbr><span class="parameters">(<a href="../../rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a> call, |
| int ordinal, |
| <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> node)</span></div> |
| <div class="block">Converts op(arg0, ..., argOrdinal, ..., argN) to op(arg0,..., node, ..., argN).</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <!-- ========= END OF CLASS DATA ========= --> |
| </main> |
| <footer role="contentinfo"> |
| <hr> |
| <p class="legal-copy"><small>Copyright © 2012-2023 Apache Software Foundation. All Rights Reserved.</small></p> |
| </footer> |
| </div> |
| </div> |
| </body> |
| </html> |
