public class IsNull extends LeafUnaryFunction
NullFalseLeafBinaryFunction
to eval is null.Modifier and Type | Method and Description |
---|---|
Optional<LeafFunction> |
negate() |
boolean |
test(org.apache.flink.table.types.logical.LogicalType type,
long rowCount,
FieldStats fieldStats) |
boolean |
test(org.apache.flink.table.types.logical.LogicalType type,
Object field) |
<T> T |
visit(FunctionVisitor<T> visitor,
FieldRef fieldRef,
List<Object> literals) |
test, test
equals, hashCode
public static final IsNull INSTANCE
public boolean test(org.apache.flink.table.types.logical.LogicalType type, Object field)
test
in class LeafUnaryFunction
public boolean test(org.apache.flink.table.types.logical.LogicalType type, long rowCount, FieldStats fieldStats)
test
in class LeafUnaryFunction
public Optional<LeafFunction> negate()
negate
in class LeafFunction
public <T> T visit(FunctionVisitor<T> visitor, FieldRef fieldRef, List<Object> literals)
visit
in class LeafFunction
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