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Add RowExpressionPredicateExtractor #13560

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Merged
highker merged 1 commit into from
Oct 16, 2019
Merged

Add RowExpressionPredicateExtractor #13560

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1 change: 1 addition & 0 deletions presto-main/src/main/java/com/facebook/presto/sql/planner/EffectivePredicateExtractor.java
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Expand Up @@ -70,6 +70,7 @@
* <p>
* Note: non-deterministic predicates can not be pulled up (so they will be ignored)
*/
@Deprecated
public class EffectivePredicateExtractor
{
private static final Predicate<Map.Entry<VariableReferenceExpression, ? extends Expression>> VARIABLE_MATCHES_EXPRESSION =
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7 changes: 7 additions & 0 deletions ...to-main/src/main/java/com/facebook/presto/sql/planner/RowExpressionEqualityInference.java
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Expand Up @@ -106,6 +106,13 @@ private RowExpressionEqualityInference(
this.derivedExpressions = ImmutableSet.copyOf(derivedExpressions);
}

public static RowExpressionEqualityInference createEqualityInference(Metadata metadata, RowExpression... equalityInferences)
{
return new Builder(metadata)
.addEqualityInference(equalityInferences)
.build();
}

/**
* Attempts to rewrite an RowExpression in terms of the symbols allowed by the symbol scope
* given the known equalities. Returns null if unsuccessful.
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