1 /*
2 * Copyright 2006-2008 the original author or authors.
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
17 package org.springframework.osgi.io.internal.resolver;
18
19 import org.osgi.framework.Bundle;
20 import org.osgi.service.packageadmin.PackageAdmin;
21
22 /**
23 * Simple interface offering utility methods for OSGi dependencies, mainly
24 * bundles. This class suplements the {@link PackageAdmin} service by offering
25 * information on importing, not just exporting.
26 *
27 * @author Costin Leau
28 */
29 public interface DependencyResolver {
30
31 /**
32 * Returns the bundles imported by the given bundle. It's up to the
33 * implementation to consider required bundles, bundle class-path and
34 * dynamic imports.
35 *
36 * <p/> The returned array should not contain duplicates (each imported
37 * bundle should be present exactly once).
38 *
39 * <p/> In general it is not expected to have knowledge about runtime
40 * loading (such as dynamic imports).
41 *
42 * @param bundle OSGi bundle for which imported bundles will be determined
43 * @return a not-null array of importing bundles
44 */
45 ImportedBundle[] getImportedBundles(Bundle bundle);
46 }