org.apache.calcite.rel.rules

Interface PushProjector.ExprCondition

All Superinterfaces:

Predicate<RexNode>

Enclosing class:

PushProjector

public static interface PushProjector.ExprCondition
extends Predicate<RexNode>

A functor that replies true or false for a given expression.

See Also:

PushProjector.OperatorExprCondition

Field Summary

Fields

Modifier and Type	Field and Description
static PushProjector.ExprCondition	FALSE Constant condition that replies false for all expressions.
static PushProjector.ExprCondition	TRUE Constant condition that replies true for all expressions.

Method Summary

Modifier and Type	Method and Description
boolean	test(RexNode expr) Evaluates a condition for a given expression.

Methods inherited from interface java.util.function.Predicate

and, isEqual, negate, or

Field Detail

FALSE

static final PushProjector.ExprCondition FALSE

Constant condition that replies false for all expressions.

TRUE

static final PushProjector.ExprCondition TRUE

Constant condition that replies true for all expressions.

Method Detail

test

boolean test(RexNode expr)

Evaluates a condition for a given expression.

Specified by:

test in interface Predicate<RexNode>

Parameters:

expr - Expression

Returns:

result of evaluating the condition