| /** |
| * 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.cxf.dosgi.topologymanager.util; |
| |
| import java.util.Collection; |
| import java.util.Dictionary; |
| import java.util.Hashtable; |
| import java.util.UUID; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.Constants; |
| import org.osgi.framework.ServiceReference; |
| import org.osgi.service.remoteserviceadmin.EndpointDescription; |
| |
| public final class Utils { |
| |
| private static final String OBJECTCLASS_EXPRESSION = ".*\\(" + Constants.OBJECTCLASS + "=([a-zA-Z_0-9.]+)\\).*"; |
| private static final Pattern OBJECTCLASS_PATTERN = Pattern.compile(OBJECTCLASS_EXPRESSION); |
| |
| private Utils() { |
| // prevent instantiation |
| } |
| |
| /** |
| * Retrieves an endpoint's properties as a Dictionary. |
| * |
| * @param endpoint an endpoint description |
| * @return endpoint properties (will never return null) |
| */ |
| public static Dictionary<String, Object> getEndpointProperties(EndpointDescription endpoint) { |
| if (endpoint == null || endpoint.getProperties() == null) { |
| return new Hashtable<String, Object>(); |
| } else { |
| return new Hashtable<String, Object>(endpoint.getProperties()); |
| } |
| } |
| |
| public static String getObjectClass(String filter) { |
| if (filter != null) { |
| Matcher matcher = OBJECTCLASS_PATTERN.matcher(filter); |
| if (matcher.matches() && matcher.groupCount() >= 1) { |
| return matcher.group(1); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns the value of a "string+" property as an array of strings. |
| * <p> |
| * A "string+" property can have a value which is either a string, |
| * an array of strings, or a collection of strings. |
| * <p> |
| * If the given value is not of one of the valid types, or is null, |
| * an empty array is returned. |
| * |
| * @param property a "string+" property value |
| * @return the property value as an array of strings, or an empty array |
| */ |
| public static String[] getStringPlusProperty(Object property) { |
| if (property instanceof String) { |
| return new String[] {(String)property}; |
| } else if (property instanceof String[]) { |
| return (String[])property; |
| } else if (property instanceof Collection) { |
| try { |
| @SuppressWarnings("unchecked") |
| Collection<String> strings = (Collection<String>)property; |
| return strings.toArray(new String[strings.size()]); |
| } catch (ArrayStoreException ase) { |
| // ignore collections with wrong type |
| } |
| } |
| return new String[0]; |
| } |
| |
| public static String getUUID(BundleContext bctx) { |
| synchronized ("org.osgi.framework.uuid") { |
| String uuid = bctx.getProperty("org.osgi.framework.uuid"); |
| if (uuid == null) { |
| uuid = UUID.randomUUID().toString(); |
| System.setProperty("org.osgi.framework.uuid", uuid); |
| } |
| return uuid; |
| } |
| } |
| |
| public static String getBundleName(ServiceReference sref) { |
| Bundle bundle = sref.getBundle(); |
| return bundle == null ? "<unregistered>" : bundle.getSymbolicName(); |
| } |
| } |