/*
* TeleStax, Open Source Cloud Communications
* Copyright 2011-2016, TeleStax Inc. and individual contributors
* by the @authors tag.
*
* This program is free software: you can redistribute it and/or modify
* under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* JBoss, Home of Professional Open Source
* Copyright 2007-2011, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jdiameter.client.impl.annotation.internal;
import java.lang.annotation.Annotation;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
*
* @author erick.svenson@yahoo.com
* @author <a href="mailto:brainslog@gmail.com"> Alexandre Mendonca </a>
* @author <a href="mailto:baranowb@gmail.com"> Bartosz Baranowski </a>
*/
public class ClassInfo {
private Storage storage;
private Class<?> _class;
private Map<Class<?>, Annotation> annotations;
private Map<Method, MethodInfo> methods;
private Map<Constructor, ConstructorInfo> constructors;
private Collection<Annotation> classCache;
private Collection<MethodInfo> methodCache;
private Collection<ConstructorInfo> constructorCache;
public ClassInfo (Storage storage, Class<?> _class) {
this.storage = storage;
this._class = _class;
}
public Class<?> getAttachedClass() {
return _class;
}
public Collection<Annotation> getAnnotations() {
if (classCache == null) {
if (annotations == null) {
annotations = new ConcurrentHashMap<Class<?>, Annotation>();
final Class<?> parent = getAttachedClass().getSuperclass();
if (parent != null) {
addAnnotations(parent);
}
for (Class<?> i : getAttachedClass().getInterfaces()) {
addAnnotations(i);
}
for (Annotation a : getAttachedClass().getDeclaredAnnotations()) {
annotations.put(a.getClass().getInterfaces()[0], a);
}
}
classCache = annotations.values();
}
return classCache;
}
public <T> T getAnnotation(Class<?> annotation) {
for (Annotation a : getAnnotations()) {
if (a.annotationType() == annotation) {
return (T) a;
}
}
return null;
}
private void addAnnotations(Class<?> _class) {
for (Annotation annotation : storage.getClassInfo(_class).getAnnotations()) {
if (annotation != null) {
for (Class<?> _interface : annotation.getClass().getInterfaces()) {
annotations.put(_interface, annotation);
}
}
}
}
public MethodInfo getMethodInfo(String methodName, Class<?>... args) {
try {
return getMethodInfo( getAttachedClass().getMethod(methodName, args) );
}
catch (Exception e) {
return null;
}
}
public ConstructorInfo getConstructorInfo(Class<?>... args) {
try {
return getConstructorInfo( getAttachedClass().getConstructor(args) );
}
catch (Exception e1) {
// may be generic
try {
return getConstructorInfo( getAttachedClass().getConstructor(Object.class) );
}
catch (Exception e2) {
}
return null;
}
}
public MethodInfo getMethodInfo(Method method) {
return getMethodMap().get(method);
}
public ConstructorInfo getConstructorInfo(Constructor constr) {
return getConstructorMap().get(constr);
}
public Collection<MethodInfo> getMethodsInfo() {
return methodCache == null ? (methodCache = getMethodMap().values()) : methodCache;
}
public Collection<ConstructorInfo> getConstructorsInfo() {
return constructorCache == null ? (constructorCache = getConstructorMap().values()) : constructorCache;
}
private Map<Method, MethodInfo> getMethodMap() {
if (methods == null) {
methods = new ConcurrentHashMap<Method, MethodInfo>();
for (Method method : getAttachedClass().getMethods()) {
methods.put(method, new MethodInfo(storage, this, method));
}
}
return methods;
}
private Map<Constructor, ConstructorInfo> getConstructorMap() {
if (constructors == null) {
constructors = new ConcurrentHashMap<Constructor, ConstructorInfo>();
for (Constructor constr : getAttachedClass().getConstructors()) {
constructors.put(constr, new ConstructorInfo(storage, this, constr));
}
}
return constructors;
}
}