/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file 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.jboss.as.connector.annotations.repository.jandex;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.jboss.as.connector.logging.ConnectorLogger;
import org.jboss.jca.common.spi.annotations.repository.Annotation;
/**
*
* An AnnotationImpl.
*
* @author <a href="mailto:stefano.maestri@redhat.comdhat.com">Stefano Maestri</a>
*
*/
public class AnnotationImpl implements Annotation {
private final String className;
private final ClassLoader cl;
private final List<String> parameterTypes;
private final String memberName;
private final boolean onMethod;
private final boolean onField;
private final Class<? extends java.lang.annotation.Annotation> annotationClass;
/**
* Create a new AnnotationImpl.
*
* @param className className
* @param cl classloader
* @param parameterTypes parameterTypes
* @param memberName memberName
* @param onMethod onMethod
* @param onField onField
* @param annotationClass annotationClass
*/
@SuppressWarnings("unchecked")
public AnnotationImpl(String className, ClassLoader cl, List<String> parameterTypes, String memberName, boolean onMethod,
boolean onField, Class<?> annotationClass) {
super();
this.className = className;
this.cl = cl;
if (parameterTypes != null) {
this.parameterTypes = new ArrayList<String>(parameterTypes.size());
this.parameterTypes.addAll(parameterTypes);
} else {
this.parameterTypes = new ArrayList<String>(0);
}
this.memberName = memberName;
this.onMethod = onMethod;
this.onField = onField;
if (annotationClass.isAnnotation()) {
this.annotationClass = (Class<? extends java.lang.annotation.Annotation>) annotationClass;
} else {
throw ConnectorLogger.ROOT_LOGGER.notAnAnnotation(annotationClass);
}
}
/**
* Get the className.
*
* @return the className.
*/
@Override
public final String getClassName() {
return className;
}
/**
* Get the annotation.
*
* @return the annotation.
*/
@Override
public final Object getAnnotation() {
try {
if (isOnField()) {
Class<?> clazz = cl.loadClass(className);
while (!clazz.equals(Object.class)) {
try {
Field field = clazz.getDeclaredField(memberName);
return field.getAnnotation(annotationClass);
} catch (Throwable t) {
clazz = clazz.getSuperclass();
}
}
} else if (isOnMethod()) {
Class<?> clazz = cl.loadClass(className);
Class<?>[] params = new Class<?>[parameterTypes.size()];
int i = 0;
for (String paramClazz : parameterTypes) {
params[i] = cl.loadClass(paramClazz);
i++;
}
while (!clazz.equals(Object.class)) {
try {
Method method = clazz.getDeclaredMethod(memberName, params);
return method.getAnnotation(annotationClass);
} catch (Throwable t) {
clazz = clazz.getSuperclass();
}
}
} else { // onClass
Class<?> clazz = cl.loadClass(className);
return clazz.getAnnotation(annotationClass);
}
} catch (Exception e) {
ConnectorLogger.ROOT_LOGGER.debug(e.getMessage(), e);
}
return null;
}
/**
* Get the parameterTypes.
*
* @return the parameterTypes.
*/
@Override
public final List<String> getParameterTypes() {
return Collections.unmodifiableList(parameterTypes);
}
/**
* Get the memberName.
*
* @return the memberName.
*/
@Override
public final String getMemberName() {
return memberName;
}
/**
* Get the onMethod.
*
* @return the onMethod.
*/
@Override
public final boolean isOnMethod() {
return onMethod;
}
/**
* Get the onField.
*
* @return the onField.
*/
@Override
public final boolean isOnField() {
return onField;
}
}