1 files changed, 223 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/JavaElementImpl.java b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/JavaElementImpl.java
new file mode 100644
index 0000000000..44dec0376a
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/JavaElementImpl.java
@@ -0,0 +1,223 @@
+/*
+ * 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;
+
+import java.lang.annotation.Annotation;
+import java.lang.annotation.ElementType;
+import java.lang.ref.WeakReference;
+import java.lang.reflect.AnnotatedElement;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.lang.reflect.Type;
+
+/**
+ * This class represents a java element such as a Package, Class, Constructor,
+ * Field, Method or Parameter.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JavaElementImpl {
+    private AnnotatedElement anchor;
+    private ElementType elementType;
+    private WeakReference<Class<?>> type;
+    private WeakReference<Type> genericType;
+    private int index = -1;
+    private String name;
+    private Class<? extends Annotation> classifer;
+
+    public JavaElementImpl(Class<?> cls) {
+        this.anchor = cls;
+        this.elementType = ElementType.TYPE;
+        this.type = new WeakReference<Class<?>>(cls);
+        this.genericType = new WeakReference<Type>(cls);
+        this.name = cls.getName();
+    }
+
+    public JavaElementImpl(Field field) {
+        this.anchor = field;
+        this.elementType = ElementType.FIELD;
+        this.type = new WeakReference<Class<?>>(field.getType());
+        this.genericType = new WeakReference<Type>(field.getGenericType());
+        this.name = field.getName();
+    }
+
+    public JavaElementImpl(Constructor<?> constructor, int index) {
+        this.anchor = constructor;
+        this.elementType = ElementType.PARAMETER;
+        this.type = new WeakReference<Class<?>>(constructor.getParameterTypes()[index]);
+        this.genericType = new WeakReference<Type>(constructor.getGenericParameterTypes()[index]);
+        this.index = index;
+        this.name = "";
+    }
+
+    public JavaElementImpl(Method method, int index) {
+        this.anchor = method;
+        this.elementType = ElementType.PARAMETER;
+        this.type = new WeakReference<Class<?>>(method.getParameterTypes()[index]);
+        this.genericType = new WeakReference<Type>(method.getGenericParameterTypes()[index]);
+        this.index = index;
+        this.name = "";
+    }
+
+    /**
+     * For testing purpose
+     * 
+     * @param name
+     * @param type
+     * @param classifer TODO
+     * @param elementType
+     */
+    public JavaElementImpl(String name, Class<?> type, Class<? extends Annotation> classifer) {
+        super();
+        this.type = new WeakReference<Class<?>>(type);
+        this.name = name;
+        this.classifer = classifer;
+    }
+
+    /**
+     * @return the anchor
+     */
+    public AnnotatedElement getAnchor() {
+        return anchor;
+    }
+
+    /**
+     * @return the elementType
+     */
+    public ElementType getElementType() {
+        return elementType;
+    }
+
+    /**
+     * @return the genericType
+     */
+    public Type getGenericType() {
+        return genericType.get();
+    }
+
+    /**
+     * @return the index
+     */
+    public int getIndex() {
+        return index;
+    }
+
+    /**
+     * @return the type
+     */
+    public Class<?> getType() {
+        return type.get();
+    }
+
+    /**
+     * @return the annotations
+     */
+    public Annotation[] getAnnotations() {
+        if (elementType == ElementType.PARAMETER) {
+            if (anchor instanceof Method) {
+                // We only care about the method-level annotations
+                return ((Method)anchor).getAnnotations();
+            }
+            if (anchor instanceof Constructor) {
+                return ((Constructor<?>)anchor).getParameterAnnotations()[index];
+            }
+        }
+        return anchor.getAnnotations();
+    }
+
+    public <T extends Annotation> T getAnnotation(Class<T> annotationType) {
+        for (Annotation a : getAnnotations()) {
+            if (a.annotationType() == annotationType) {
+                return annotationType.cast(a);
+            }
+        }
+        return null;
+    }
+
+    /**
+     * @return the name
+     */
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * @param name the name to set
+     */
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    /**
+     * @return the classifier
+     */
+    public Class<? extends Annotation> getClassifer() {
+        return classifer;
+    }
+
+    /**
+     * @param classifer the classifier to set
+     */
+    public void setClassifer(Class<? extends Annotation> classifer) {
+        this.classifer = classifer;
+    }
+    
+
+    @Override
+    public String toString() {
+        return anchor.toString() + (elementType == ElementType.PARAMETER ? "[" + index + "]" : "");
+    }
+
+    @Override
+    public int hashCode() {
+        final int PRIME = 31;
+        int result = 1;
+        result = PRIME * result + ((anchor == null) ? 0 : anchor.hashCode());
+        result = PRIME * result + index;
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final JavaElementImpl other = (JavaElementImpl)obj;
+        if (anchor == null) {
+            if (other.anchor != null) {
+                return false;
+            }
+        } else if (!anchor.equals(other.anchor)) {
+            return false;
+        }
+        if (index != other.index) {
+            return false;
+        }
+        return true;
+    }    
+
+}