org.apache.calcite.rel.rules

Interface PushProjector.ExprCondition

All Superinterfaces:

com.google.common.base.Predicate<RexNode>

All Known Implementing Classes:

PushProjector.ExprConditionImpl, PushProjector.OperatorExprCondition

Enclosing class:

PushProjector

public static interface PushProjector.ExprCondition
extends com.google.common.base.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 com.google.common.base.Predicate

apply, equals

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.

Parameters:

expr - Expression

Returns:

result of evaluating the condition