1 files changed, 134 insertions, 0 deletions
diff --git a/sandbox/mobile-android/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ServiceDeclaration.java b/sandbox/mobile-android/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ServiceDeclaration.java
new file mode 100644
index 0000000000..ff7d215d2e
--- /dev/null
+++ b/sandbox/mobile-android/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ServiceDeclaration.java
@@ -0,0 +1,134 @@
+/*
+ * 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.extensibility;
+
+import java.lang.ref.WeakReference;
+import java.net.URL;
+import java.util.Map;
+
+/**
+ * Service declaration using J2SE Jar service provider spec Classes specified
+ * inside this declaration are loaded using the ClassLoader used to read the
+ * configuration file corresponding to this declaration.
+ */
+public class ServiceDeclaration {
+
+    private WeakReference<ClassLoader> classLoader;
+
+    private String className;
+
+    private Map<String, String> attributes;
+
+    /**
+     * Service declaration constructor
+     * 
+     * @param className Service implementation class name
+     * @param classLoader ClassLoader corresponding to this service
+     *                implementation
+     * @param attributes Optional attributes for this service declaration
+     */
+    public ServiceDeclaration(String className, ClassLoader classLoader, Map<String, String> attributes) {
+
+        this.className = className;
+        this.classLoader = new WeakReference<ClassLoader>(classLoader);
+        this.attributes = attributes;
+    }
+
+    /**
+     * Load this service implementation class
+     * 
+     * @return Class
+     * @throws ClassNotFoundException
+     */
+    @SuppressWarnings("unchecked")
+    public Class<?> loadClass() throws ClassNotFoundException {
+
+        return Class.forName(className, true, classLoader.get());
+    }
+
+    /**
+     * Load another class using the ClassLoader of this service implementation
+     * 
+     * @param anotherClassName
+     * @return Class
+     * @throws ClassNotFoundException
+     */
+    public Class<?> loadClass(String anotherClassName) throws ClassNotFoundException {
+
+        return Class.forName(anotherClassName, true, classLoader.get());
+    }
+
+    /**
+     * Return the resource corresponding to this service implementation class
+     * 
+     * @return resource URL
+     */
+    public URL getResource() {
+        return classLoader.get().getResource(className);
+    }
+
+    /**
+     * ClassLoader associated with this service declaration
+     * 
+     * @return ClassLoader
+     */
+    public ClassLoader getClassLoader() {
+        return classLoader.get();
+    }
+
+    /**
+     * Service implementation class corresponding to this declaration
+     * 
+     * @return The Service implementation class corresponding to this declaration 
+     */
+    public String getClassName() {
+        return className;
+    }
+
+    /**
+     * Attributes specified for this declaration
+     * 
+     * @return attributes
+     */
+    public Map<String, String> getAttributes() {
+        return attributes;
+    }
+
+    /**
+     * Equals method used to ensure that each service declaration is stored only
+     * once in a set of declarations.
+     */
+    @Override
+    public boolean equals(Object o) {
+        if (!(o instanceof ServiceDeclaration))
+            return false;
+        ServiceDeclaration s = (ServiceDeclaration)o;
+        if (!className.equals(s.className))
+            return false;
+        else if (!classLoader.equals(s.classLoader))
+            return false;
+        else if (attributes == null)
+            return s.attributes == null;
+        else
+            return attributes.equals(s.attributes);
+
+    }
+
+}