| /* |
| * 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.felix.configurator.impl; |
| |
| import java.io.IOException; |
| |
| import org.osgi.framework.Constants; |
| import org.osgi.framework.InvalidSyntaxException; |
| import org.osgi.service.cm.Configuration; |
| import org.osgi.service.cm.ConfigurationAdmin; |
| |
| /** |
| * Utilities for configuration handling |
| */ |
| public abstract class ConfigUtil { |
| |
| /** |
| * Encode the value for the LDAP filter: \, *, (, and ) should be escaped. |
| */ |
| private static String encode(final String value) { |
| return value.replace("\\", "\\\\") |
| .replace("*", "\\*") |
| .replace("(", "\\(") |
| .replace(")", "\\)"); |
| } |
| |
| /** |
| * Get or create a configuration |
| * @param ca The configuration admin |
| * @param pid The pid |
| * @param createIfNeeded If {@code true} the configuration is created if it doesn't exists |
| * @return The configuration or {@code null}. |
| * @throws IOException If anything goes wrong |
| * @throws InvalidSyntaxException If the filter syntax is invalid (very unlikely) |
| */ |
| public static Configuration getOrCreateConfiguration(final ConfigurationAdmin ca, |
| final String pid, |
| final boolean createIfNeeded) |
| throws IOException, InvalidSyntaxException { |
| final String filter = "(" + Constants.SERVICE_PID + "=" + encode(pid) + ")"; |
| final Configuration[] configs = ca.listConfigurations(filter); |
| if (configs != null && configs.length > 0) { |
| return configs[0]; |
| } |
| if ( !createIfNeeded ) { |
| return null; |
| } |
| |
| final int pos = pid.indexOf('~'); |
| if ( pos != -1 ) { |
| final String factoryPid = pid.substring(0, pos); |
| final String alias = pid.substring(pos + 1); |
| |
| return ca.getFactoryConfiguration(factoryPid, alias, "?"); |
| } else { |
| return ca.getConfiguration(pid, "?"); |
| } |
| } |
| } |