/* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
*
* Licensed 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.springframework.security.access.method;
import java.util.Collection;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.framework.AopProxyUtils;
import org.springframework.security.access.ConfigAttribute;
/**
* Abstract implementation of <tt>MethodSecurityMetadataSource</tt> which resolves the secured object type to
* a MethodInvocation.
*
* @author Ben Alex
* @author Luke Taylor
*/
public abstract class AbstractMethodSecurityMetadataSource implements MethodSecurityMetadataSource {
protected final Log logger = LogFactory.getLog(getClass());
//~ Methods ========================================================================================================
public final Collection<ConfigAttribute> getAttributes(Object object) {
if (object instanceof MethodInvocation) {
MethodInvocation mi = (MethodInvocation) object;
Object target = mi.getThis();
Class<?> targetClass = null;
if (target != null) {
targetClass = target instanceof Class<?> ? (Class<?>)target : AopProxyUtils.ultimateTargetClass(target);
}
Collection<ConfigAttribute> attrs = getAttributes(mi.getMethod(), targetClass);
if(attrs != null && !attrs.isEmpty()) {
return attrs;
}
if(target != null && !(target instanceof Class<?>)) {
attrs = getAttributes(mi.getMethod(), target.getClass());
}
return attrs;
}
throw new IllegalArgumentException("Object must be a non-null MethodInvocation");
}
public final boolean supports(Class<?> clazz) {
return (MethodInvocation.class.isAssignableFrom(clazz));
}
}