org.argeo.slc.core/src/org/argeo/slc/osgi/deploy/OsgiResourceSet.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.osgi.deploy;
  17
  18 import org.argeo.slc.core.deploy.DefaultResourceSet;
  19 import org.osgi.framework.Bundle;
  20 import org.osgi.framework.BundleContext;
  21 import org.springframework.core.io.ResourceLoader;
  22 import org.eclipse.gemini.blueprint.context.BundleContextAware;
  23 import org.eclipse.gemini.blueprint.io.OsgiBundleResourceLoader;
  24 import org.eclipse.gemini.blueprint.io.OsgiBundleResourcePatternResolver;
  25 import org.eclipse.gemini.blueprint.util.OsgiBundleUtils;
  26
  27 /**
  28  * Retrieves ressources from an OSGi bundle either the active one or another one
  29  * referenced by its symbolic name.
  30  */
  31 public class OsgiResourceSet extends DefaultResourceSet implements
  32                 BundleContextAware {
  33         private BundleContext bundleContext;
  34         private Bundle bundle = null;
  35         private String bundleSymbolicName = null;
  36
  37         private OsgiBundleResourceLoader osgiBundleResourceLoader = null;
  38
  39         @Override
  40         public void afterPropertiesSet() throws Exception {
  41                 osgiBundleResourceLoader = new OsgiBundleResourceLoader(getBundle());
  42                 if (getResourcePatternResolver() == null)
  43                         setResourcePatternResolver(new OsgiBundleResourcePatternResolver(
  44                                         osgiBundleResourceLoader));
  45                 super.afterPropertiesSet();
  46         }
  47
  48         public Bundle getBundle() {
  49                 if (bundle != null)
  50                         return bundle;
  51                 else if (bundleSymbolicName != null)// do not cache
  52                         return OsgiBundleUtils.findBundleBySymbolicName(bundleContext,
  53                                         bundleSymbolicName);
  54                 else
  55                         // containing bundle
  56                         return bundleContext.getBundle();
  57         }
  58
  59         public void setBundleContext(BundleContext bundleContext) {
  60                 this.bundleContext = bundleContext;
  61         }
  62
  63         @Override
  64         public ResourceLoader getResourceLoaderToUse() {
  65                 return osgiBundleResourceLoader;
  66         }
  67
  68         public void setBundle(Bundle bundle) {
  69                 this.bundle = bundle;
  70         }
  71
  72         public void setBundleSymbolicName(String bundleSymbolicName) {
  73                 this.bundleSymbolicName = bundleSymbolicName;
  74         }
  75
  76 }