001/*
002  GRANITE DATA SERVICES
003  Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004
005  This file is part of Granite Data Services.
006
007  Granite Data Services is free software; you can redistribute it and/or modify
008  it under the terms of the GNU Library General Public License as published by
009  the Free Software Foundation; either version 2 of the License, or (at your
010  option) any later version.
011
012  Granite Data Services is distributed in the hope that it will be useful, but
013  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015  for more details.
016
017  You should have received a copy of the GNU Library General Public License
018  along with this library; if not, see <http://www.gnu.org/licenses/>.
019*/
020
021package org.granite.gravity.selector;
022
023import flex.messaging.messages.Message;
024
025/**
026 * @author William DRAI
027 */
028public class GravityMessageSelector implements MessageSelector {
029
030    private BooleanExpression expression;
031
032
033    public GravityMessageSelector(String selector) {
034        try {
035            this.expression = new SelectorParser().parse(selector);
036        }
037        catch (Exception e) {
038            throw new RuntimeException("Gravity SelectorParser error " + selector, e);
039        }
040    }
041
042    public boolean accept(Message message) {
043        try {
044            MessageEvaluationContext context = new MessageEvaluationContext(message);
045
046            return expression.matches(context);
047        }
048        catch (Exception e) {
049            throw new RuntimeException("Gravity selector accept error " + message, e);
050        }
051    }
052}