From 1fb6a28a73ca17dbb8c4b3059db590e2f9620943 Mon Sep 17 00:00:00 2001
From: antelder <antelder@13f79535-47bb-0310-9956-ffa450edef68>
Date: Wed, 3 Aug 2011 09:21:41 +0000
Subject: Correct tag name

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1153404 13f79535-47bb-0310-9956-ffa450edef68
---
 .../java/impl/JavaClassIntrospectorImpl.java       | 141 +++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 sca-java-1.x/tags/1.6-TUSCANY-3909/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaClassIntrospectorImpl.java

(limited to 'sca-java-1.x/tags/1.6-TUSCANY-3909/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaClassIntrospectorImpl.java')

diff --git a/sca-java-1.x/tags/1.6-TUSCANY-3909/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaClassIntrospectorImpl.java b/sca-java-1.x/tags/1.6-TUSCANY-3909/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaClassIntrospectorImpl.java
new file mode 100644
index 0000000000..0bcec3c78f
--- /dev/null
+++ b/sca-java-1.x/tags/1.6-TUSCANY-3909/implementation-java/src/main/java/org/apache/tuscany/sca/implementation/java/impl/JavaClassIntrospectorImpl.java
@@ -0,0 +1,141 @@
+/*
+ * 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.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.List;
+import java.util.Set;
+
+import org.apache.tuscany.sca.implementation.java.IntrospectionException;
+import org.apache.tuscany.sca.implementation.java.JavaImplementation;
+import org.apache.tuscany.sca.implementation.java.introspect.JavaClassVisitor;
+import org.apache.tuscany.sca.implementation.java.introspect.impl.JavaIntrospectionHelper;
+
+/**
+ * An extensible Java class introspector implementation.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class JavaClassIntrospectorImpl {
+    
+    private List<JavaClassVisitor> visitors;
+
+    public JavaClassIntrospectorImpl(List<JavaClassVisitor> visitors) {
+        this.visitors = visitors;
+    }
+
+    /**
+     * JSR-250 PFD recommends the following guidelines for how annotations
+     * interact with inheritance in order to keep the resulting complexity in
+     * control:
+     * <ol>
+     * <li>Class-level annotations only affect the class they annotate and
+     * their members, that is, its methods and fields. They never affect a
+     * member declared by a superclass, even if it is not hidden or overridden
+     * by the class in question.
+     * <li>In addition to affecting the annotated class, class-level
+     * annotations may act as a shorthand for member-level annotations. If a
+     * member carries a specific member-level annotation, any annotations of the
+     * same type implied by a class-level annotation are ignored. In other
+     * words, explicit member-level annotations have priority over member-level
+     * annotations implied by a class-level annotation.
+     * <li>The interfaces implemented by a class never contribute annotations
+     * to the class itself or any of its members.
+     * <li>Members inherited from a superclass and which are not hidden or
+     * overridden maintain the annotations they had in the class that declared
+     * them, including member-level annotations implied by class-level ones.
+     * <li>Member-level annotations on a hidden or overridden member are always
+     * ignored.
+     * </ol>
+     */
+    public void introspectClass(JavaImplementation type, Class<?> clazz)
+        throws IntrospectionException {
+        for (JavaClassVisitor extension : visitors) {
+            extension.visitClass(clazz, type);
+        }
+
+        for (Constructor<?> constructor : clazz.getConstructors()) {
+            for (JavaClassVisitor extension : visitors) {
+                extension.visitConstructor(constructor, type);
+                // Assuming the visitClass or visitConstructor will populate the
+                // type.getConstructors
+                JavaConstructorImpl<?> definition = type.getConstructors().get(constructor);
+                if (definition != null) {
+                    for (JavaParameterImpl p : definition.getParameters()) {
+                        extension.visitConstructorParameter(p, type);
+                    }
+                }
+            }
+        }
+
+        Set<Field> fields = JavaIntrospectionHelper.getAllPublicAndProtectedFields(clazz, true);
+        for (Field field : fields) {
+            for (JavaClassVisitor extension : visitors) {
+                extension.visitField(field, type);
+            }
+        }
+
+        // Check if any private fields have illegal annotations that should be raised as errors
+        Set<Field> privateFields = JavaIntrospectionHelper.getPrivateFields(clazz);
+        for (Field field : privateFields) {
+            for (JavaClassVisitor processor : visitors) {
+                processor.visitField(field, type);
+            }
+        }
+        
+        Set<Method> methods = JavaIntrospectionHelper.getAllUniquePublicProtectedMethods(clazz, true);
+        for (Method method : methods) {
+            for (JavaClassVisitor processor : visitors) {
+                processor.visitMethod(method, type);
+            }
+        }
+
+        // Check if any private methods have illegal annotations that should be raised as errors
+        Set<Method> privateMethods = JavaIntrospectionHelper.getPrivateMethods(clazz);
+        for (Method method : privateMethods) {
+            for (JavaClassVisitor processor : visitors) {
+                processor.visitMethod(method, type);
+            }
+        }
+
+        Class superClass = clazz.getSuperclass();
+        if (superClass != null) {
+            visitSuperClass(superClass, type);
+        }
+
+        for (JavaClassVisitor extension : visitors) {
+            extension.visitEnd(clazz, type);
+        }
+    }
+
+    private void visitSuperClass(Class<?> clazz, JavaImplementation type) throws IntrospectionException {
+        if (!Object.class.equals(clazz)) {
+            for (JavaClassVisitor extension : visitors) {
+                extension.visitSuperClass(clazz, type);
+            }
+            clazz = clazz.getSuperclass();
+            if (clazz != null) {
+                visitSuperClass(clazz, type);
+            }
+        }
+    }
+
+}
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