| /* |
| * 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.openjpa.persistence.jdbc; |
| |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.regexp.RE; |
| |
| /** |
| * Utility class to verify whether a set of fragments appear in a list of |
| * possible SQL statement. |
| * |
| * @author Pinaki Poddar |
| * |
| */ |
| public class SQLSniffer { |
| |
| private static Map<String, RE> cache = new HashMap<String, RE>(); |
| /** |
| * Checks that the given set of regular expressions occur in at least one of |
| * the given input SQL. |
| */ |
| public static boolean matches(List<String> SQLs, String...regexes) { |
| if (SQLs == null || regexes == null) |
| return false; |
| for (String sql : SQLs) { |
| boolean matched = true; |
| for (String key : regexes) { |
| RE regex = getRegularExpression(key); |
| if (!regex.match(sql)) { |
| matched = false; |
| break; |
| } |
| } |
| if (matched) |
| return true; |
| } |
| return false; |
| } |
| |
| private static RE getRegularExpression(String regex) { |
| if (cache.containsKey(regex)) |
| return cache.get(regex); |
| RE re = new RE(regex); |
| cache.put(regex, re); |
| return re; |
| } |
| } |