runtime/org.argeo.slc.repo/src/main/java/org/argeo/slc/repo/osgi/OsgiProfile.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.repo.osgi;
  17
  18 import java.io.InputStream;
  19 import java.net.URL;
  20 import java.util.ArrayList;
  21 import java.util.Collections;
  22 import java.util.List;
  23 import java.util.Properties;
  24
  25 import org.apache.commons.io.IOUtils;
  26 import org.argeo.slc.SlcException;
  27
  28 /**
  29  * Wraps an OSGi profile, simplifying access to its values such as system
  30  * packages, etc.
  31  */
  32 public class OsgiProfile {
  33         public final static String PROP_SYSTEM_PACKAGES = "org.osgi.framework.system.packages";
  34
  35         public final static OsgiProfile PROFILE_JAVA_SE_1_6 = new OsgiProfile(
  36                         "JavaSE-1.6.profile");
  37
  38         private final URL url;
  39         private final Properties properties;
  40
  41         public OsgiProfile(URL url) {
  42                 this.url = url;
  43                 properties = new Properties();
  44                 InputStream in = null;
  45                 try {
  46                         properties.load(this.url.openStream());
  47                 } catch (Exception e) {
  48                         throw new SlcException("Cannot initalize OSGi profile " + url, e);
  49                 } finally {
  50                         IOUtils.closeQuietly(in);
  51                 }
  52         }
  53
  54         public OsgiProfile(String name) {
  55                 this(OsgiProfile.class.getClassLoader().getResource(
  56                                 '/'
  57                                                 + OsgiProfile.class.getPackage().getName()
  58                                                                 .replace('.', '/') + '/' + name));
  59         }
  60
  61         public List<String> getSystemPackages() {
  62                 String[] splitted = properties.getProperty(PROP_SYSTEM_PACKAGES).split(
  63                                 ",");
  64                 List<String> res = new ArrayList<String>();
  65                 for (String pkg : splitted) {
  66                         res.add(pkg.trim());
  67                 }
  68                 return Collections.unmodifiableList(res);
  69         }
  70 }