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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2011 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package org.glassfish.apf.impl;
import org.glassfish.apf.ComponentInfo;
import org.glassfish.apf.factory.Factory;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* This class represents the view of a class from annotation.
*
* @author Shing Wai Chan
*/
public class ComponentDefinition implements ComponentInfo {
final private Class clazz;
final private List constructors = new ArrayList();
final private List classes = new ArrayList();
final private List fields = new ArrayList();
final private Map methodMap = new HashMap();
public ComponentDefinition(Class clazz) {
this.clazz = clazz;
constructClassList();
initializeConstructors();
initializeFields();
initializeMethods();
}
public Field[] getFields() {
return fields.toArray(new Field[fields.size()]);
}
public Method[] getMethods() {
return methodMap.values().toArray(new Method[methodMap.size()]);
}
public Constructor[] getConstructors() {
return constructors.toArray(new Constructor[constructors.size()]);
}
private void constructClassList() {
// check whether this class is in the skip list
if (!Factory.isSkipAnnotationProcessing(clazz.getName())) {
classes.add(clazz);
}
Class parent = clazz;
while ((parent = parent.getSuperclass()) != null) {
if (parent.getPackage() == null ||
!parent.getPackage().getName().startsWith("java.lang")) {
// always check whether this class is in the class list
// for skipping annotation processing
if (!Factory.isSkipAnnotationProcessing(parent.getName())) {
classes.add(0, parent);
}
}
}
}
/**
* In P.148 of "The Java Langugage Specification 2/e",
* Constructors, static initializers, and instance initializers are not
* members and therefore not inherited.
*/
private void initializeConstructors() {
for (Class cl : classes) {
for (Constructor constr : cl.getConstructors()) {
constructors.add(constr);
}
}
}
private void initializeFields() {
for (Class cl : classes) {
for (Field f : cl.getDeclaredFields()) {
fields.add(f);
}
}
}
private void initializeMethods() {
for (Class cl : classes) {
for (Method method : cl.getDeclaredMethods()) {
if (!method.isBridge()) {
methodMap.put(new MethodKey(method), method);
}
}
}
}
private static class MethodKey {
private Method m = null;
private int hashCode;
private String className = null;
private Package classPackage = null;
private MethodKey(Method m) {
this.m = m;
hashCode = m.getName().hashCode();
// store className and classPackage as getters are native
className = m.getDeclaringClass().getName();
classPackage = m.getDeclaringClass().getPackage();
}
public int hashCode() {
return hashCode;
}
/**
* This equals method is defined in terms of inheritance overriding.
* We depends on java compiler to rule out irrelvant cases here.
* @return true for overriding and false otherwise
*/
public boolean equals(Object o) {
if (!(o instanceof MethodKey)) {
return false;
}
MethodKey mk2 = (MethodKey)o;
Method m2 = mk2.m;
if (m.getName().equals(m2.getName()) && Arrays.equals(
m.getParameterTypes(), m2.getParameterTypes())) {
int modifiers = m.getModifiers();
int modifiers2 = m2.getModifiers();
boolean isPackageProtected2 = !Modifier.isPublic(modifiers2) &&
!Modifier.isProtected(modifiers2) &&
!Modifier.isPrivate(modifiers2);
boolean isSamePackage =
(classPackage == null && mk2.classPackage == null) ||
(classPackage != null && mk2.classPackage != null &&
classPackage.getName().equals(
mk2.classPackage.getName()));
if (Modifier.isPrivate(modifiers)) {
// need exact match
return Modifier.isPrivate(modifiers2) && isSamePackage
&& className.equals(mk2.className);
} else { // public, protected, package protected
return Modifier.isPublic(modifiers2) ||
Modifier.isProtected(modifiers2) ||
isPackageProtected2 && isSamePackage;
}
}
return false;
}
}
}