Create 2.0 M4 release branch

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@830484 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 73 insertions, 0 deletions

diff --git a/branches/sca-java-2.0-M4/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiClassReferenceModelResolver.java b/branches/sca-java-2.0-M4/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiClassReferenceModelResolver.java
new file mode 100644
index 0000000000..3963968940
--- /dev/null
+++ b/branches/sca-java-2.0-M4/modules/contribution-osgi/src/main/java/org/apache/tuscany/sca/contribution/osgi/impl/OSGiClassReferenceModelResolver.java
@@ -0,0 +1,73 @@
+/*
+ * 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 org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.processor.ProcessorContext;
+import org.apache.tuscany.sca.contribution.resolver.ClassReference;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.osgi.framework.Bundle;
+
+/**
+ * A Model Resolver for ClassReferences.
+ *
+ * @version $Rev$ $Date$
+ */
+public class OSGiClassReferenceModelResolver implements ModelResolver {
+    // private Contribution contribution;
+    private Bundle bundle;
+
+    public OSGiClassReferenceModelResolver(Contribution contribution, FactoryExtensionPoint modelFactories) {
+        // this.contribution = contribution;
+        this.bundle = OSGiBundleActivator.findBundle(contribution.getLocation());
+    }
+
+    public void addModel(Object resolved, ProcessorContext context) {
+    }
+
+    public Object removeModel(Object resolved, ProcessorContext context) {
+        return resolved;
+    }
+
+    public <T> T resolveModel(Class<T> modelClass, T unresolved, ProcessorContext context) {
+        //Load a class on demand
+        Class<?> clazz = null;
+        if (bundle != null) {
+            try {
+                clazz = bundle.loadClass(((ClassReference)unresolved).getClassName());
+            } catch (Exception e) {
+                // Ignore
+            }
+        }
+
+        if (clazz != null) {
+            //if we load the class
+            // Store a new ClassReference wrapping the loaded class
+            ClassReference classReference = new ClassReference(clazz);
+
+            // Return the resolved ClassReference
+            return modelClass.cast(classReference);
+        } else {
+            return unresolved;
+        }
+
+    }
+}