001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.console.filter;
018
019import java.util.Collections;
020import java.util.List;
021import java.util.StringTokenizer;
022
023public abstract class AbstractQueryFilter implements QueryFilter {
024    protected QueryFilter next;
025
026    /**
027     * Creates a query filter, with the next filter specified by next.
028     * @param next - the next query filter
029     */
030    protected AbstractQueryFilter(QueryFilter next) {
031        this.next = next;
032    }
033
034    /**
035     * Performs a query given the query string
036     * @param query - query string
037     * @return objects that matches the query
038     * @throws Exception
039     */
040    public List query(String query) throws Exception {
041        // Converts string query to map query
042        StringTokenizer tokens = new StringTokenizer(query, QUERY_DELIMETER);
043        return query(Collections.list(tokens));
044    }
045
046}