MessageRegexRestriction.java

/*
 * Copyright (c) 2012. Piraso Alvin R. de Leon. All Rights Reserved.
 *
 * See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The Piraso licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.piraso.headless.restriction;

import org.piraso.api.entry.Entry;
import org.piraso.api.entry.MessageEntry;

import java.util.regex.Pattern;

public class MessageRegexRestriction implements Restriction {

    private Pattern pattern;

    public MessageRegexRestriction(String regex) {
        this(regex, 0);
    }

    public MessageRegexRestriction(String regex, int flag) {
        this.pattern = Pattern.compile(regex, flag);
    }

    public boolean matches(Entry entry) {
        if(!MessageEntry.class.isInstance(entry)) {
            return false;
        }

        MessageEntry messageEntry = (MessageEntry) entry;

        return pattern.matcher(messageEntry.getMessage()).matches();
    }
}