1 files changed, 135 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaImplementationFactoryImpl.java b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaImplementationFactoryImpl.java
new file mode 100644
index 0000000000..a579a6719c
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaImplementationFactoryImpl.java
@@ -0,0 +1,135 @@
+/*
+ * 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.implementation.java.impl;
+
+import java.io.IOException;
+import java.lang.reflect.Constructor;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.extensibility.ServiceDeclaration;
+import org.apache.tuscany.sca.implementation.java.IntrospectionException;
+import org.apache.tuscany.sca.implementation.java.JavaImplementation;
+import org.apache.tuscany.sca.implementation.java.JavaImplementationFactory;
+import org.apache.tuscany.sca.implementation.java.introspect.JavaClassVisitor;
+
+
+/**
+ * A factory for the Java model.
+ *
+ * @version $Rev$ $Date$
+ */
+public abstract class JavaImplementationFactoryImpl implements JavaImplementationFactory {
+    
+    private List<JavaClassVisitor> visitors = new ArrayList<JavaClassVisitor>();
+    private JavaClassIntrospectorImpl introspector;
+    private boolean loaded;
+    protected ExtensionPointRegistry registry;
+    
+    public JavaImplementationFactoryImpl(ExtensionPointRegistry registry) {
+        this.registry = registry;
+    }
+
+    public JavaImplementation createJavaImplementation() {
+        JavaImplementation javaImplementation = new JavaImplementationImpl();
+        return javaImplementation;
+    }
+    
+    public JavaImplementation createJavaImplementation(Class<?> implementationClass) throws IntrospectionException {
+        JavaImplementation javaImplementation = createJavaImplementation();
+        getIntrospector().introspectClass(javaImplementation, implementationClass);
+        return javaImplementation;
+    }
+    
+    public void createJavaImplementation(JavaImplementation javaImplementation, Class<?> implementationClass) throws IntrospectionException {
+        getIntrospector().introspectClass(javaImplementation, implementationClass);
+    }
+
+    public void addClassVisitor(JavaClassVisitor visitor) {
+        for (JavaClassVisitor tmpVisitor : visitors){
+            if (tmpVisitor.getClass() == visitor.getClass()){
+                // trying to add a duplicate visitor so
+                // ignore it 
+                return;
+            }
+        }
+        visitors.add(visitor);
+    }
+
+    public void removeClassVisitor(JavaClassVisitor visitor) {
+        visitors.remove(visitor);
+    }
+    
+    public List<JavaClassVisitor> getClassVisitors() {
+        loadVisitors();
+        return visitors;
+    }
+    
+    /**
+     * Load visitors declared under META-INF/services
+     */
+    @SuppressWarnings("unchecked")
+    private synchronized void loadVisitors() {
+        if (loaded)
+            return;
+        
+        // Get the databinding service declarations
+        Collection<ServiceDeclaration> visitorDeclarations; 
+        try {
+            visitorDeclarations = registry.getServiceDiscovery().getServiceDeclarations(JavaClassVisitor.class, true);
+        } catch (IOException e) {
+            throw new IllegalStateException(e);
+        }
+        
+        // Load data bindings
+        for (ServiceDeclaration visitorDeclaration: visitorDeclarations) {
+            JavaClassVisitor visitor = null;
+            try {
+                Class<JavaClassVisitor> visitorClass = (Class<JavaClassVisitor>)visitorDeclaration.loadClass();
+                
+                try {
+                    Constructor<JavaClassVisitor> constructor = visitorClass.getConstructor(ExtensionPointRegistry.class);
+                    visitor = constructor.newInstance(registry);
+                } catch (NoSuchMethodException e) {
+                    visitor = visitorClass.newInstance();
+                }
+                
+                
+            } catch (Exception e) {
+                IllegalStateException ie = new IllegalStateException(e);
+                throw ie;
+            }
+            
+            addClassVisitor(visitor);
+        }
+        
+        loaded = true;
+    }
+
+    private synchronized JavaClassIntrospectorImpl getIntrospector() {
+        if (introspector != null) {
+            return introspector;
+        }
+        introspector = new JavaClassIntrospectorImpl(getClassVisitors());
+        return introspector;
+    }
+
+}