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| <div class="subTitle">org.apache.calcite.rel.rules</div> |
| <h2 title="Class ValuesReduceRule" class="title">Class ValuesReduceRule</h2> |
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| <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> |
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| <ul class="inheritance"> |
| <li>org.apache.calcite.rel.rules.ValuesReduceRule</li> |
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| <pre>public abstract class <span class="typeNameLabel">ValuesReduceRule</span> |
| extends <a href="../../../../../org/apache/calcite/plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></pre> |
| <div class="block">Planner rule that folds projections and filters into an underlying |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalValues.html" title="class in org.apache.calcite.rel.logical"><code>LogicalValues</code></a>. |
| |
| <p>Returns a simplified <code>Values</code>, perhaps containing zero tuples |
| if all rows are filtered away. |
| |
| <p>For example,</p> |
| |
| <blockquote><code>select a - b from (values (1, 2), (3, 5), (7, 11)) as t (a, |
| b) where a + b > 4</code></blockquote> |
| |
| <p>becomes</p> |
| |
| <blockquote><code>select x from (values (-2), (-4))</code></blockquote> |
| |
| <p>Ignores an empty <code>Values</code>; this is better dealt with by |
| <a href="../../../../../org/apache/calcite/rel/rules/PruneEmptyRules.html" title="class in org.apache.calcite.rel.rules"><code>PruneEmptyRules</code></a>.</div> |
| </li> |
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| <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>private static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.MyRexShuttle.html" title="class in org.apache.calcite.rel.rules">ValuesReduceRule.MyRexShuttle</a></span></code> |
| <div class="block">Shuttle that converts inputs to literals.</div> |
| </td> |
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| <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/ValuesReduceRule.html" title="class in org.apache.calcite.rel.rules">ValuesReduceRule</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html#FILTER_INSTANCE">FILTER_INSTANCE</a></span></code> |
| <div class="block">Instance of this rule that applies to the pattern |
| Filter(Values).</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html#LOGGER">LOGGER</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html" title="class in org.apache.calcite.rel.rules">ValuesReduceRule</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html#PROJECT_FILTER_INSTANCE">PROJECT_FILTER_INSTANCE</a></span></code> |
| <div class="block">Singleton instance of this rule that applies to the pattern |
| Project(Filter(Values)).</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html" title="class in org.apache.calcite.rel.rules">ValuesReduceRule</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html#PROJECT_INSTANCE">PROJECT_INSTANCE</a></span></code> |
| <div class="block">Instance of this rule that applies to the pattern |
| Project(Values).</div> |
| </td> |
| </tr> |
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| <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> |
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| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html#ValuesReduceRule-org.apache.calcite.plan.RelOptRuleOperand-org.apache.calcite.tools.RelBuilderFactory-java.lang.String-">ValuesReduceRule</a></span>(<a href="../../../../../org/apache/calcite/plan/RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a> operand, |
| <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> desc)</code> |
| <div class="block">Creates a ValuesReduceRule.</div> |
| </td> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html#apply-org.apache.calcite.plan.RelOptRuleCall-org.apache.calcite.rel.logical.LogicalProject-org.apache.calcite.rel.logical.LogicalFilter-org.apache.calcite.rel.logical.LogicalValues-">apply</a></span>(<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a> call, |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalProject.html" title="class in org.apache.calcite.rel.logical">LogicalProject</a> project, |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalFilter.html" title="class in org.apache.calcite.rel.logical">LogicalFilter</a> filter, |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalValues.html" title="class in org.apache.calcite.rel.logical">LogicalValues</a> values)</code> |
| <div class="block">Does the work.</div> |
| </td> |
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| <h3>Methods 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#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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| <pre>private static final org.slf4j.Logger LOGGER</pre> |
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| <pre>public static final <a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html" title="class in org.apache.calcite.rel.rules">ValuesReduceRule</a> FILTER_INSTANCE</pre> |
| <div class="block">Instance of this rule that applies to the pattern |
| Filter(Values).</div> |
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| <pre>public static final <a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html" title="class in org.apache.calcite.rel.rules">ValuesReduceRule</a> PROJECT_INSTANCE</pre> |
| <div class="block">Instance of this rule that applies to the pattern |
| Project(Values).</div> |
| </li> |
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| <pre>public static final <a href="../../../../../org/apache/calcite/rel/rules/ValuesReduceRule.html" title="class in org.apache.calcite.rel.rules">ValuesReduceRule</a> PROJECT_FILTER_INSTANCE</pre> |
| <div class="block">Singleton instance of this rule that applies to the pattern |
| Project(Filter(Values)).</div> |
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| <h3>Constructor Detail</h3> |
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| <pre>public ValuesReduceRule(<a href="../../../../../org/apache/calcite/plan/RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a> operand, |
| <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> desc)</pre> |
| <div class="block">Creates a ValuesReduceRule.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>operand</code> - Class of rels to which this rule should apply</dd> |
| <dd><code>relBuilderFactory</code> - Builder for relational expressions</dd> |
| <dd><code>desc</code> - Description, or null to guess description</dd> |
| </dl> |
| </li> |
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| <h3>Method Detail</h3> |
| <a name="apply-org.apache.calcite.plan.RelOptRuleCall-org.apache.calcite.rel.logical.LogicalProject-org.apache.calcite.rel.logical.LogicalFilter-org.apache.calcite.rel.logical.LogicalValues-"> |
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| <li class="blockList"> |
| <h4>apply</h4> |
| <pre>protected void apply(<a href="../../../../../org/apache/calcite/plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a> call, |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalProject.html" title="class in org.apache.calcite.rel.logical">LogicalProject</a> project, |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalFilter.html" title="class in org.apache.calcite.rel.logical">LogicalFilter</a> filter, |
| <a href="../../../../../org/apache/calcite/rel/logical/LogicalValues.html" title="class in org.apache.calcite.rel.logical">LogicalValues</a> values)</pre> |
| <div class="block">Does the work.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>call</code> - Rule call</dd> |
| <dd><code>project</code> - Project, may be null</dd> |
| <dd><code>filter</code> - Filter, may be null</dd> |
| <dd><code>values</code> - Values rel to be reduced</dd> |
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