Package io.prestosql.cost
Class EnforceSingleRowStatsRule
- java.lang.Object
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- io.prestosql.cost.SimpleStatsRule<EnforceSingleRowNode>
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- io.prestosql.cost.EnforceSingleRowStatsRule
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- All Implemented Interfaces:
ComposableStatsCalculator.Rule<EnforceSingleRowNode>
public class EnforceSingleRowStatsRule extends SimpleStatsRule<EnforceSingleRowNode>
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Constructor Summary
Constructors Constructor Description EnforceSingleRowStatsRule(StatsNormalizer normalizer)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected Optional<PlanNodeStatsEstimate>
doCalculate(EnforceSingleRowNode node, StatsProvider sourceStats, Lookup lookup, Session session, TypeProvider types)
Pattern<EnforceSingleRowNode>
getPattern()
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Methods inherited from class io.prestosql.cost.SimpleStatsRule
calculate
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Constructor Detail
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EnforceSingleRowStatsRule
public EnforceSingleRowStatsRule(StatsNormalizer normalizer)
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Method Detail
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getPattern
public Pattern<EnforceSingleRowNode> getPattern()
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doCalculate
protected Optional<PlanNodeStatsEstimate> doCalculate(EnforceSingleRowNode node, StatsProvider sourceStats, Lookup lookup, Session session, TypeProvider types)
- Specified by:
doCalculate
in classSimpleStatsRule<EnforceSingleRowNode>
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