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| <div class="subTitle">org.apache.calcite.rel.rules</div> |
| <h2 title="Class ReduceExpressionsRule" class="title">Class ReduceExpressionsRule</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../org/apache/calcite/plan/RelOptRule.html" title="class in org.apache.calcite.plan">org.apache.calcite.plan.RelOptRule</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.rel.rules.ReduceExpressionsRule</li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../org/apache/calcite/rel/rules/SubstitutionRule.html" title="interface in org.apache.calcite.rel.rules">SubstitutionRule</a>, <a href="../../../../../org/apache/calcite/rel/rules/TransformationRule.html" title="interface in org.apache.calcite.rel.rules">TransformationRule</a></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.CalcReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.CalcReduceExpressionsRule</a>, <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.FilterReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.FilterReduceExpressionsRule</a>, <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.JoinReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.JoinReduceExpressionsRule</a>, <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.ProjectReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.ProjectReduceExpressionsRule</a>, <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.WindowReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.WindowReduceExpressionsRule</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public abstract class <span class="typeNameLabel">ReduceExpressionsRule</span> |
| extends <a href="../../../../../org/apache/calcite/plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a> |
| implements <a href="../../../../../org/apache/calcite/rel/rules/SubstitutionRule.html" title="interface in org.apache.calcite.rel.rules">SubstitutionRule</a></pre> |
| <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> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ======== NESTED CLASS SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="nested.class.summary"> |
| <!-- --> |
| </a> |
| <h3>Nested Class Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Nested Class Summary table, listing nested classes, and an explanation"> |
| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Class and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.CalcReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.CalcReduceExpressionsRule</a></span></code> |
| <div class="block">Rule that reduces constants inside a <a href="../../../../../org/apache/calcite/rel/core/Calc.html" title="class in org.apache.calcite.rel.core"><code>Calc</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.CaseShuttle.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.CaseShuttle</a></span></code> |
| <div class="block">Shuttle that pushes predicates into a CASE.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.FilterReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.FilterReduceExpressionsRule</a></span></code> |
| <div class="block">Rule that reduces constants inside a <a href="../../../../../org/apache/calcite/rel/core/Filter.html" title="class in org.apache.calcite.rel.core"><code>Filter</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.JoinReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.JoinReduceExpressionsRule</a></span></code> |
| <div class="block">Rule that reduces constants inside a <a href="../../../../../org/apache/calcite/rel/core/Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.ProjectReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.ProjectReduceExpressionsRule</a></span></code> |
| <div class="block">Rule that reduces constants inside a <a href="../../../../../org/apache/calcite/rel/core/Project.html" title="class in org.apache.calcite.rel.core"><code>Project</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.ReducibleExprLocator.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.ReducibleExprLocator</a></span></code> |
| <div class="block">Helper class used to locate expressions that either can be reduced to |
| literals or contain redundant casts.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.RexReplacer.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.RexReplacer</a></span></code> |
| <div class="block">Replaces expressions with their reductions.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.WindowReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.WindowReduceExpressionsRule</a></span></code> |
| <div class="block">Rule that reduces constants inside a <a href="../../../../../org/apache/calcite/rel/core/Window.html" title="class in org.apache.calcite.rel.core"><code>Window</code></a>.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.summary"> |
| <!-- --> |
| </a> |
| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#CALC_INSTANCE">CALC_INSTANCE</a></span></code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="block"><span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/rel/rules/CoreRules.html#CALC_REDUCE_EXPRESSIONS"><code>CoreRules.CALC_REDUCE_EXPRESSIONS</code></a>.</span></div> |
| </div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html?is-external=true" title="class or interface in java.util.regex">Pattern</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#EXCLUSION_PATTERN">EXCLUSION_PATTERN</a></span></code> |
| <div class="block">Regular expression that matches the description of all instances of this |
| rule and <a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html" title="class in org.apache.calcite.rel.rules"><code>ValuesReduceRule</code></a> also.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.FilterReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.FilterReduceExpressionsRule</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#FILTER_INSTANCE">FILTER_INSTANCE</a></span></code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="block"><span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/rel/rules/CoreRules.html#FILTER_REDUCE_EXPRESSIONS"><code>CoreRules.FILTER_REDUCE_EXPRESSIONS</code></a>.</span></div> |
| </div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#JOIN_INSTANCE">JOIN_INSTANCE</a></span></code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="block"><span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/rel/rules/CoreRules.html#JOIN_REDUCE_EXPRESSIONS"><code>CoreRules.JOIN_REDUCE_EXPRESSIONS</code></a>.</span></div> |
| </div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#matchNullability">matchNullability</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#PROJECT_INSTANCE">PROJECT_INSTANCE</a></span></code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="block"><span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/rel/rules/CoreRules.html#PROJECT_REDUCE_EXPRESSIONS"><code>CoreRules.PROJECT_REDUCE_EXPRESSIONS</code></a>.</span></div> |
| </div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#WINDOW_INSTANCE">WINDOW_INSTANCE</a></span></code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="block"><span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/rel/rules/CoreRules.html#WINDOW_REDUCE_EXPRESSIONS"><code>CoreRules.WINDOW_REDUCE_EXPRESSIONS</code></a>.</span></div> |
| </div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="fields.inherited.from.class.org.apache.calcite.plan.RelOptRule"> |
| <!-- --> |
| </a> |
| <h3>Fields inherited from class org.apache.calcite.plan.<a href="../../../../../org/apache/calcite/plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></h3> |
| <code><a href="../../../../../org/apache/calcite/plan/RelOptRule.html#description">description</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#operands">operands</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#relBuilderFactory">relBuilderFactory</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier</th> |
| <th class="colLast" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#ReduceExpressionsRule-java.lang.Class-boolean-org.apache.calcite.tools.RelBuilderFactory-java.lang.String-">ReduceExpressionsRule</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><? extends <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>> clazz, |
| boolean matchNullability, |
| <a href="../../../../../org/apache/calcite/tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a> relBuilderFactory, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> description)</code> |
| <div class="block">Creates a ReduceExpressionsRule.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#ReduceExpressionsRule-java.lang.Class-org.apache.calcite.tools.RelBuilderFactory-java.lang.String-">ReduceExpressionsRule</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><? extends <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>> clazz, |
| <a href="../../../../../org/apache/calcite/tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a> relBuilderFactory, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> description)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <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="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>protected static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#findReducibleExps-org.apache.calcite.rel.type.RelDataTypeFactory-java.util.List-com.google.common.collect.ImmutableMap-java.util.List-java.util.List-">findReducibleExps</a></span>(<a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a> typeFactory, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> exps, |
| com.google.common.collect.ImmutableMap<<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> constants, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> constExps, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>> addCasts)</code> |
| <div class="block">Locates expressions that can be reduced to literals or converted to |
| expressions with redundant casts removed.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <C extends <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>><br>com.google.common.collect.ImmutableMap<<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,C></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#predicateConstants-java.lang.Class-org.apache.calcite.rex.RexBuilder-org.apache.calcite.plan.RelOptPredicateList-">predicateConstants</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><C> clazz, |
| <a href="../../../../../org/apache/calcite/rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a> rexBuilder, |
| <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="block"><span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html#constantMap"><code>RelOptPredicateList.constantMap</code></a></span></div> |
| </div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#pushPredicateIntoCase-org.apache.calcite.rex.RexCall-">pushPredicateIntoCase</a></span>(<a href="../../../../../org/apache/calcite/rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a> call)</code> |
| <div class="block">Pushes predicates into a CASE.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>protected static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#reduceExpressions-org.apache.calcite.rel.RelNode-java.util.List-org.apache.calcite.plan.RelOptPredicateList-">reduceExpressions</a></span>(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates)</code> |
| <div class="block">Reduces a list of expressions.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>protected static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#reduceExpressions-org.apache.calcite.rel.RelNode-java.util.List-org.apache.calcite.plan.RelOptPredicateList-boolean-">reduceExpressions</a></span>(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates, |
| boolean unknownAsFalse)</code> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>protected static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#reduceExpressions-org.apache.calcite.rel.RelNode-java.util.List-org.apache.calcite.plan.RelOptPredicateList-boolean-boolean-">reduceExpressions</a></span>(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates, |
| boolean unknownAsFalse, |
| boolean matchNullability)</code> |
| <div class="block">Reduces a list of expressions.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>protected static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#reduceExpressionsInternal-org.apache.calcite.rel.RelNode-org.apache.calcite.rex.RexSimplify-org.apache.calcite.rex.RexUnknownAs-java.util.List-org.apache.calcite.plan.RelOptPredicateList-">reduceExpressionsInternal</a></span>(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="../../../../../org/apache/calcite/rex/RexSimplify.html" title="class in org.apache.calcite.rex">RexSimplify</a> simplify, |
| <a href="../../../../../org/apache/calcite/rex/RexUnknownAs.html" title="enum in org.apache.calcite.rex">RexUnknownAs</a> unknownAs, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>protected static <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html#substitute-org.apache.calcite.rex.RexCall-int-org.apache.calcite.rex.RexNode-">substitute</a></span>(<a href="../../../../../org/apache/calcite/rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a> call, |
| int ordinal, |
| <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> node)</code> |
| <div class="block">Converts op(arg0, ..., argOrdinal, ..., argN) to op(arg0,..., node, ..., argN).</div> |
| </td> |
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| <code><a href="../../../../../org/apache/calcite/plan/RelOptRule.html#any--">any</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#convert-org.apache.calcite.rel.RelNode-org.apache.calcite.plan.RelTrait-">convert</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#convert-org.apache.calcite.rel.RelNode-org.apache.calcite.plan.RelTraitSet-">convert</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#convertList-java.util.List-org.apache.calcite.plan.RelTrait-">convertList</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#convertOperand-java.lang.Class-java.util.function.Predicate-org.apache.calcite.plan.RelTrait-">convertOperand</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#convertOperand-java.lang.Class-com.google.common.base.Predicate-org.apache.calcite.plan.RelTrait-">convertOperand</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#equals-java.lang.Object-">equals</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#equals-org.apache.calcite.plan.RelOptRule-">equals</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#getOperand--">getOperand</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#getOperands--">getOperands</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#getOutConvention--">getOutConvention</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#getOutTrait--">getOutTrait</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#hashCode--">hashCode</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#matches-org.apache.calcite.plan.RelOptRuleCall-">matches</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#none--">none</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#onMatch-org.apache.calcite.plan.RelOptRuleCall-">onMatch</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#operand-java.lang.Class-org.apache.calcite.plan.RelOptRuleOperandChildren-">operand</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#operand-java.lang.Class-org.apache.calcite.plan.RelOptRuleOperand-org.apache.calcite.plan.RelOptRuleOperand...-">operand</a>, <a href="../../../../../org/apache/calcite/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="../../../../../org/apache/calcite/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="../../../../../org/apache/calcite/plan/RelOptRule.html#operand-java.lang.Class-org.apache.calcite.plan.RelTrait-org.apache.calcite.plan.RelOptRuleOperandChildren-">operand</a>, <a href="../../../../../org/apache/calcite/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="../../../../../org/apache/calcite/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="../../../../../org/apache/calcite/plan/RelOptRule.html#some-org.apache.calcite.plan.RelOptRuleOperand-org.apache.calcite.plan.RelOptRuleOperand...-">some</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#toString--">toString</a>, <a href="../../../../../org/apache/calcite/plan/RelOptRule.html#unordered-org.apache.calcite.plan.RelOptRuleOperand-org.apache.calcite.plan.RelOptRuleOperand...-">unordered</a></code></li> |
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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
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| <h3>Methods inherited from interface org.apache.calcite.rel.rules.<a href="../../../../../org/apache/calcite/rel/rules/SubstitutionRule.html" title="interface in org.apache.calcite.rel.rules">SubstitutionRule</a></h3> |
| <code><a href="../../../../../org/apache/calcite/rel/rules/SubstitutionRule.html#autoPruneOld--">autoPruneOld</a></code></li> |
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| <h4>EXCLUSION_PATTERN</h4> |
| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html?is-external=true" title="class or interface in java.util.regex">Pattern</a> EXCLUSION_PATTERN</pre> |
| <div class="block">Regular expression that matches the description of all instances of this |
| rule and <a href="../../../../../org/apache/calcite/rel/rules/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> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| public static final <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.FilterReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule.FilterReduceExpressionsRule</a> FILTER_INSTANCE</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/rel/rules/CoreRules.html#FILTER_REDUCE_EXPRESSIONS"><code>CoreRules.FILTER_REDUCE_EXPRESSIONS</code></a>.</span></div> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| public static final <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule</a> PROJECT_INSTANCE</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/rel/rules/CoreRules.html#PROJECT_REDUCE_EXPRESSIONS"><code>CoreRules.PROJECT_REDUCE_EXPRESSIONS</code></a>.</span></div> |
| </li> |
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| <h4>JOIN_INSTANCE</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| public static final <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule</a> JOIN_INSTANCE</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/rel/rules/CoreRules.html#JOIN_REDUCE_EXPRESSIONS"><code>CoreRules.JOIN_REDUCE_EXPRESSIONS</code></a>.</span></div> |
| </li> |
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| <h4>CALC_INSTANCE</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| public static final <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule</a> CALC_INSTANCE</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/rel/rules/CoreRules.html#CALC_REDUCE_EXPRESSIONS"><code>CoreRules.CALC_REDUCE_EXPRESSIONS</code></a>.</span></div> |
| </li> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| public static final <a href="../../../../../org/apache/calcite/rel/rules/ReduceExpressionsRule.html" title="class in org.apache.calcite.rel.rules">ReduceExpressionsRule</a> WINDOW_INSTANCE</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/rel/rules/CoreRules.html#WINDOW_REDUCE_EXPRESSIONS"><code>CoreRules.WINDOW_REDUCE_EXPRESSIONS</code></a>.</span></div> |
| </li> |
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| <pre>protected final boolean matchNullability</pre> |
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| <h3>Constructor Detail</h3> |
| <a name="ReduceExpressionsRule-java.lang.Class-boolean-org.apache.calcite.tools.RelBuilderFactory-java.lang.String-"> |
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| <h4>ReduceExpressionsRule</h4> |
| <pre>protected ReduceExpressionsRule(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><? extends <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>> clazz, |
| boolean matchNullability, |
| <a href="../../../../../org/apache/calcite/tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a> relBuilderFactory, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> description)</pre> |
| <div class="block">Creates a ReduceExpressionsRule.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>clazz</code> - class of rels to which this rule should apply</dd> |
| <dd><code>matchNullability</code> - Whether to add a CAST when a nullable expression |
| reduces to a NOT NULL literal</dd> |
| </dl> |
| </li> |
| </ul> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| protected ReduceExpressionsRule(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><? extends <a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>> clazz, |
| <a href="../../../../../org/apache/calcite/tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a> relBuilderFactory, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> description)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
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| <a name="reduceExpressions-org.apache.calcite.rel.RelNode-java.util.List-org.apache.calcite.plan.RelOptPredicateList-"> |
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| <h4>reduceExpressions</h4> |
| <pre>protected static boolean reduceExpressions(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates)</pre> |
| <div class="block">Reduces a list of expressions.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></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><span class="returnLabel">Returns:</span></dt> |
| <dd>whether reduction found something to change, and succeeded</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="reduceExpressions-org.apache.calcite.rel.RelNode-java.util.List-org.apache.calcite.plan.RelOptPredicateList-boolean-"> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| protected static boolean reduceExpressions(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates, |
| boolean unknownAsFalse)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> </div> |
| </li> |
| </ul> |
| <a name="reduceExpressions-org.apache.calcite.rel.RelNode-java.util.List-org.apache.calcite.plan.RelOptPredicateList-boolean-boolean-"> |
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| <h4>reduceExpressions</h4> |
| <pre>protected static boolean reduceExpressions(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates, |
| boolean unknownAsFalse, |
| boolean matchNullability)</pre> |
| <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> |
| <dt><span class="paramLabel">Parameters:</span></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> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>whether reduction found something to change, and succeeded</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="reduceExpressionsInternal-org.apache.calcite.rel.RelNode-org.apache.calcite.rex.RexSimplify-org.apache.calcite.rex.RexUnknownAs-java.util.List-org.apache.calcite.plan.RelOptPredicateList-"> |
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| <h4>reduceExpressionsInternal</h4> |
| <pre>protected static boolean reduceExpressionsInternal(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| <a href="../../../../../org/apache/calcite/rex/RexSimplify.html" title="class in org.apache.calcite.rex">RexSimplify</a> simplify, |
| <a href="../../../../../org/apache/calcite/rex/RexUnknownAs.html" title="enum in org.apache.calcite.rex">RexUnknownAs</a> unknownAs, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> expList, |
| <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates)</pre> |
| </li> |
| </ul> |
| <a name="findReducibleExps-org.apache.calcite.rel.type.RelDataTypeFactory-java.util.List-com.google.common.collect.ImmutableMap-java.util.List-java.util.List-"> |
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| <h4>findReducibleExps</h4> |
| <pre>protected static void findReducibleExps(<a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a> typeFactory, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> exps, |
| com.google.common.collect.ImmutableMap<<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> constants, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> constExps, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>> addCasts)</pre> |
| <div class="block">Locates expressions that can be reduced to literals or converted to |
| expressions with redundant casts removed.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></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> |
| </dl> |
| </li> |
| </ul> |
| <a name="predicateConstants-java.lang.Class-org.apache.calcite.rex.RexBuilder-org.apache.calcite.plan.RelOptPredicateList-"> |
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| <h4>predicateConstants</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a> |
| public static <C extends <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>> com.google.common.collect.ImmutableMap<<a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>,C> predicateConstants(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><C> clazz, |
| <a href="../../../../../org/apache/calcite/rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a> rexBuilder, |
| <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a> predicates)</pre> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">Use <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html#constantMap"><code>RelOptPredicateList.constantMap</code></a></span></div> |
| <div class="block">Creates a map containing each (e, constant) pair that occurs within |
| a predicate list.</div> |
| <dl> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>C</code> - what to consider a constant: <a href="../../../../../org/apache/calcite/rex/RexLiteral.html" title="class in org.apache.calcite.rex"><code>RexLiteral</code></a> to use a narrow |
| definition of constant, or <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a> to use |
| <a href="../../../../../org/apache/calcite/rex/RexUtil.html#isConstant-org.apache.calcite.rex.RexNode-"><code>RexUtil.isConstant(RexNode)</code></a></dd> |
| <dt><span class="paramLabel">Parameters:</span></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><span class="returnLabel">Returns:</span></dt> |
| <dd>Map from values to constants</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="pushPredicateIntoCase-org.apache.calcite.rex.RexCall-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>pushPredicateIntoCase</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a> pushPredicateIntoCase(<a href="../../../../../org/apache/calcite/rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a> call)</pre> |
| <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> |
| </li> |
| </ul> |
| <a name="substitute-org.apache.calcite.rex.RexCall-int-org.apache.calcite.rex.RexNode-"> |
| <!-- --> |
| </a> |
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| <h4>substitute</h4> |
| <pre>protected static <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> substitute(<a href="../../../../../org/apache/calcite/rex/RexCall.html" title="class in org.apache.calcite.rex">RexCall</a> call, |
| int ordinal, |
| <a href="../../../../../org/apache/calcite/rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> node)</pre> |
| <div class="block">Converts op(arg0, ..., argOrdinal, ..., argN) to op(arg0,..., node, ..., argN).</div> |
| </li> |
| </ul> |
| </li> |
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