org.apache.paimon.predicate

接口 Predicate

所有超级接口:

Serializable

所有已知实现类:

CompoundPredicate, LeafPredicate

@Public
public interface Predicate
extends Serializable

Predicate which returns Boolean and provides testing by stats.

从以下版本开始:

0.4.0

另请参阅:

PredicateBuilder

方法概要

限定符和类型	方法和说明
Optional<Predicate>	negate()
boolean	test(InternalRow row) Test based on the specific input row.
boolean	test(long rowCount, FieldStats[] fieldStats) Test based on the statistical information to determine whether a hit is possible.
boolean	test(Object[] values) Test based on the specific input column values.
<T> T	visit(PredicateVisitor<T> visitor)

方法详细资料

test

boolean test(Object[] values)

Test based on the specific input column values.

返回:

return true when hit, false when not hit.

test

boolean test(InternalRow row)

Test based on the specific input row.

返回:

return true when hit, false when not hit.

test

boolean test(long rowCount,
             FieldStats[] fieldStats)

Test based on the statistical information to determine whether a hit is possible.

返回:

return true is likely to hit (there may also be false positives), return false is absolutely not possible to hit.

negate

Optional<Predicate> negate()

返回:

the negation predicate of this predicate if possible.

visit

<T> T visit(PredicateVisitor<T> visitor)