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}