Package io.atlasmap.expression.internal

Class LogicExpression

java.lang.Object

io.atlasmap.expression.internal.BinaryExpression

io.atlasmap.expression.internal.LogicExpression

All Implemented Interfaces:

Expression, BooleanExpression

public abstract class LogicExpression
extends BinaryExpression
implements BooleanExpression

A filter performing a comparison of two objects.

Version:

$Revision: 1.2 $

Field Summary

Fields inherited from class io.atlasmap.expression.internal.BinaryExpression

left, right

Fields inherited from interface io.atlasmap.expression.Expression

CACHE

Constructor Summary

Constructors

Constructor	Description
LogicExpression(BooleanExpression left, BooleanExpression right)	A constructor.

Method Summary

Modifier and Type	Method	Description
static BooleanExpression	createAND(BooleanExpression lvalue, BooleanExpression rvalue)	Creates and expression.
static BooleanExpression	createOR(BooleanExpression lvalue, BooleanExpression rvalue)	Creates or expression.
abstract io.atlasmap.v2.Field	evaluate(ExpressionContext expressionContext)	Evaluates the expression.
boolean	matches(ExpressionContext message)	Returns true if condition is satisfied.

Methods inherited from class io.atlasmap.expression.internal.BinaryExpression

equals, getExpressionSymbol, getLeft, getRight, hashCode, setLeft, setRight, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LogicExpression

public LogicExpression(BooleanExpression left,
                       BooleanExpression right)

A constructor.

Parameters:

left - left BooleanExpression

right - right BooleanExpression

Method Detail

createOR

public static BooleanExpression createOR(BooleanExpression lvalue,
                                         BooleanExpression rvalue)

Creates or expression.

Parameters:

lvalue - left

rvalue - right

Returns:

result

createAND

public static BooleanExpression createAND(BooleanExpression lvalue,
                                          BooleanExpression rvalue)

Creates and expression.

Parameters:

lvalue - left

rvalue - right

Returns:

result

evaluate

public abstract io.atlasmap.v2.Field evaluate(ExpressionContext expressionContext)
                                       throws ExpressionException

Evaluates the expression.

Specified by:

evaluate in interface Expression

Parameters:

expressionContext - expression context

Returns:

result

Throws:

ExpressionException - If evaluation fails

matches

public boolean matches(ExpressionContext message)
                throws ExpressionException

Returns true if condition is satisfied.

Specified by:

matches in interface BooleanExpression

Parameters:

message - expression context

Returns:

true if satisfied

Throws:

ExpressionException - exception