Package org.apache.qpid.server.filter

Class LogicExpression<T>

java.lang.Object

org.apache.qpid.server.filter.BinaryExpression<T>

org.apache.qpid.server.filter.LogicExpression<T>

All Implemented Interfaces:

BooleanExpression<T>, Expression<T>

public abstract class LogicExpression<T>
extends BinaryExpression<T>
implements BooleanExpression<T>

A filter performing a comparison of two objects

Constructor Summary

Constructors

Constructor	Description
LogicExpression(BooleanExpression<T> left, BooleanExpression<T> right)

Method Summary

Modifier and Type	Method	Description
static <E> BooleanExpression<E>	createAND(BooleanExpression<E> lvalue, BooleanExpression<E> rvalue)
static <E> BooleanExpression<E>	createOR(BooleanExpression<E> lvalue, BooleanExpression<E> rvalue)
abstract Object	evaluate(T message)
boolean	matches(T message)

Methods inherited from class org.apache.qpid.server.filter.BinaryExpression

equals, getExpressionSymbol, getLeft, getRight, hashCode, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

LogicExpression

public LogicExpression(BooleanExpression<T> left,
                       BooleanExpression<T> right)

Method Detail

createOR

public static <E> BooleanExpression<E> createOR(BooleanExpression<E> lvalue,
                                                BooleanExpression<E> rvalue)

createAND

public static <E> BooleanExpression<E> createAND(BooleanExpression<E> lvalue,
                                                 BooleanExpression<E> rvalue)

evaluate

public abstract Object evaluate(T message)

Specified by:

evaluate in interface Expression<T>

Parameters:

message - object to evaluate

Returns:

the value of this expression

matches

public boolean matches(T message)

Specified by:

matches in interface BooleanExpression<T>

Parameters:

message - object to match

Returns:

true if the expression evaluates to Boolean.TRUE.