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author | dims <dims@13f79535-47bb-0310-9956-ffa450edef68> | 2008-06-17 00:23:01 +0000 |
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committer | dims <dims@13f79535-47bb-0310-9956-ffa450edef68> | 2008-06-17 00:23:01 +0000 |
commit | bdd0a41aed7edf21ec2a65cfa17a86af2ef8c48a (patch) | |
tree | 38a92061c0793434c4be189f1d70c3458b6bc41d /branches/sca-java-1.0/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleReferenceModelResolver.java |
Move Tuscany from Incubator to top level.
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@668359 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'branches/sca-java-1.0/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleReferenceModelResolver.java')
-rw-r--r-- | branches/sca-java-1.0/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleReferenceModelResolver.java | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/branches/sca-java-1.0/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleReferenceModelResolver.java b/branches/sca-java-1.0/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleReferenceModelResolver.java new file mode 100644 index 0000000000..b8095d2529 --- /dev/null +++ b/branches/sca-java-1.0/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiBundleReferenceModelResolver.java @@ -0,0 +1,152 @@ +/* + * 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.tuscany.sca.contribution.osgi.impl; + +import java.util.HashMap; +import java.util.Map; + +import org.apache.tuscany.sca.contribution.Contribution; +import org.apache.tuscany.sca.contribution.Import; +import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; +import org.apache.tuscany.sca.contribution.osgi.BundleReference; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.osgi.runtime.OSGiRuntime; +import org.osgi.framework.Bundle; + +/** + * A Model Resolver for BundleReferences. + * + * @version $Rev$ $Date$ + */ +public class OSGiBundleReferenceModelResolver implements ModelResolver { + private Contribution contribution; + private Map<String, BundleReference> map = new HashMap<String, BundleReference>(); + + OSGiRuntime osgiRuntime; + private OSGiBundleProcessor bundleProcessor; + + public OSGiBundleReferenceModelResolver(Contribution contribution, ModelFactoryExtensionPoint modelFactories) { + this.contribution = contribution; + this.bundleProcessor = new OSGiBundleProcessor(); + } + + public void addModel(Object resolved) { + BundleReference bundleRef = (BundleReference)resolved; + map.put(bundleRef.getBundleUniqueName(), bundleRef); + } + + public Object removeModel(Object resolved) { + return map.remove(((BundleReference)resolved).getBundleUniqueName()); + } + + /** + * Handle artifact resolution when the specific class reference is imported from another contribution + * @param unresolved + * @return + */ + private BundleReference resolveImportedModel(BundleReference unresolved) { + BundleReference resolved = unresolved; + + if( this.contribution != null) { + for (Import import_ : this.contribution.getImports()) { + + resolved = import_.getModelResolver().resolveModel(BundleReference.class, unresolved); + if (resolved != unresolved) + break; + } + + } + return resolved; + } + + + public <T> T resolveModel(Class<T> modelClass, T unresolved) { + Object resolved = map.get(unresolved); + + if (resolved != null ){ + return modelClass.cast(resolved); + } + + try { + if (osgiRuntime == null) + osgiRuntime = OSGiRuntime.getRuntime(); + } catch (Exception e) { + } + if (osgiRuntime == null) + return unresolved; + + //Load a class on demand + Object bundle = null; + String bundleName = ((BundleReference)unresolved).getBundleName(); + String bundleVersion = ((BundleReference)unresolved).getBundleVersion(); + + bundle = osgiRuntime.findBundle(bundleName, bundleVersion); + BundleReference bundleReference; + + if (bundle == null) + bundleReference = bundleProcessor.installNestedBundle(contribution, bundleName, bundleVersion); + else { + bundleReference = new BundleReference(bundle, + ((BundleReference)unresolved).getBundleName(), + bundleVersion, + getBundleFileName(bundle) + ); + } + + + if (bundleReference != null) { + //if we load the class + + map.put(((BundleReference)unresolved).getBundleUniqueName(), bundleReference); + + // Return the resolved BundleReference + return modelClass.cast(bundleReference); + } else { + //delegate resolution of the class + resolved = this.resolveImportedModel((BundleReference)unresolved); + return modelClass.cast(resolved); + } + + + } + + + private String getBundleFileName(Object bundle) { + if (bundle instanceof Bundle) { + String path = ((Bundle)bundle).getLocation(); + if (path.startsWith(contribution.getLocation())) { + if (path.equals(contribution.getLocation())) { + int index = path.lastIndexOf('/'); + if (index > 0 && index < path.length()-1) + path = path.substring(index+1); + } else { + path = path.substring(contribution.getLocation().length()); + if (path.startsWith("/")) + path = path.substring(1); + } + } else if (path.lastIndexOf('/') > 0) + path = path.substring(path.lastIndexOf('/')+1); + return path; + } + return null; + + } + +} |