| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF 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.apache.activemq.console.filter; |
| |
| public class WildcardToMsgSelectorTransformFilter extends WildcardTransformFilter { |
| /** |
| * Creates a filter that is able to transform a wildcard query to a message |
| * selector format |
| * |
| * @param next - next query filter |
| */ |
| public WildcardToMsgSelectorTransformFilter(QueryFilter next) { |
| super(next); |
| } |
| |
| /** |
| * Use to determine if a query string is a wildcard query. A query string is |
| * a wildcard query if it is a key-value pair with the format <key>=<value> |
| * and the value is enclosed in '' and contains '*' and '?'. |
| * |
| * @param query - query string |
| * @return true, if the query string is a wildcard query, false otherwise |
| */ |
| protected boolean isWildcardQuery(String query) { |
| // If the query is a key=value pair |
| String key = query; |
| String val = ""; |
| int pos = key.indexOf("="); |
| if (pos >= 0) { |
| val = key.substring(pos + 1); |
| } |
| |
| // If the value contains wildcards and is enclose by ' |
| return val.startsWith("'") && val.endsWith("'") && ((val.indexOf("*") >= 0) || (val.indexOf("?") >= 0)); |
| } |
| |
| /** |
| * Transform a wildcard query to message selector format |
| * |
| * @param query - query string to transform |
| * @return message selector format string |
| */ |
| protected String transformWildcardQuery(String query) { |
| // If the query is a key=value pair |
| String key = query; |
| String val = ""; |
| int pos = key.indexOf("="); |
| if (pos >= 0) { |
| val = key.substring(pos + 1); |
| key = key.substring(0, pos); |
| } |
| |
| val = val.replaceAll("[?]", "_"); |
| val = val.replaceAll("[*]", "%"); |
| |
| return key + " LIKE " + val; |
| } |
| } |