Package org.apache.calcite.plan.volcano
Class VolcanoPlanner.Provenance
- java.lang.Object
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- org.apache.calcite.plan.volcano.VolcanoPlanner.Provenance
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- Direct Known Subclasses:
VolcanoPlanner.DirectProvenance
,VolcanoPlanner.RuleProvenance
,VolcanoPlanner.UnknownProvenance
- Enclosing class:
- VolcanoPlanner
private abstract static class VolcanoPlanner.Provenance extends java.lang.Object
Where a RelNode came from.
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Field Summary
Fields Modifier and Type Field Description static VolcanoPlanner.Provenance
EMPTY
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Constructor Summary
Constructors Modifier Constructor Description private
Provenance()
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Field Detail
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EMPTY
public static final VolcanoPlanner.Provenance EMPTY
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