Class ImplementDistinctUnionRule
- java.lang.Object
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- com.apple.foundationdb.record.query.plan.temp.PlannerRule<LogicalDistinctExpression>
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- com.apple.foundationdb.record.query.plan.temp.rules.ImplementDistinctUnionRule
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@API(EXPERIMENTAL) public class ImplementDistinctUnionRule extends PlannerRule<LogicalDistinctExpression>
A rule that implements a distinct union of its (already implemented) children. This will extract theRecordQueryPlan
from each child of aLogicalUnorderedUnionExpression
and create aRecordQueryUnionPlan
with those plans as children.
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Constructor Summary
Constructors Constructor Description ImplementDistinctUnionRule()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
onMatch(PlannerRuleCall call)
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Methods inherited from class com.apple.foundationdb.record.query.plan.temp.PlannerRule
getMatcher, getRootOperator, toString
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Method Detail
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onMatch
public void onMatch(@Nonnull PlannerRuleCall call)
- Specified by:
onMatch
in classPlannerRule<LogicalDistinctExpression>
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