org.acegisecurity.acl.AclProviderManager Maven / Gradle / Ivy
/* 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.acegisecurity.acl;
import org.acegisecurity.Authentication;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.Assert;
import java.util.Iterator;
import java.util.List;
/**
* Iterates through a list of {@link AclProvider}s to locate the ACLs that apply to a given domain object instance.If
* no compatible provider is found, it is assumed that no ACLs apply for the specified domain object instance and
* null
is returned.
*
* @author Ben Alex
* @version $Id: AclProviderManager.java 1496 2006-05-23 13:38:33Z benalex $
*/
public class AclProviderManager implements AclManager, InitializingBean {
//~ Static fields/initializers =====================================================================================
private static final Log logger = LogFactory.getLog(AclProviderManager.class);
//~ Instance fields ================================================================================================
private List providers;
//~ Methods ========================================================================================================
public void afterPropertiesSet() throws Exception {
checkIfValidList(this.providers);
}
private void checkIfValidList(List listToCheck) {
Assert.notEmpty(listToCheck, "A list of AclManagers is required");
}
public AclEntry[] getAcls(Object domainInstance) {
Assert.notNull(domainInstance, "domainInstance is null - violating interface contract");
Iterator iter = providers.iterator();
while (iter.hasNext()) {
AclProvider provider = (AclProvider) iter.next();
if (provider.supports(domainInstance)) {
if (logger.isDebugEnabled()) {
logger.debug("ACL lookup using " + provider.getClass().getName());
}
return provider.getAcls(domainInstance);
}
}
if (logger.isDebugEnabled()) {
logger.debug("No AclProvider found for " + domainInstance.toString());
}
return null;
}
public AclEntry[] getAcls(Object domainInstance, Authentication authentication) {
Assert.notNull(domainInstance, "domainInstance is null - violating interface contract");
Assert.notNull(authentication, "authentication is null - violating interface contract");
Iterator iter = providers.iterator();
while (iter.hasNext()) {
AclProvider provider = (AclProvider) iter.next();
if (provider.supports(domainInstance)) {
if (logger.isDebugEnabled()) {
logger.debug("ACL lookup using " + provider.getClass().getName());
}
return provider.getAcls(domainInstance, authentication);
} else {
if (logger.isDebugEnabled()) {
logger.debug("Provider " + provider.toString() + " does not support " + domainInstance);
}
}
}
if (logger.isDebugEnabled()) {
logger.debug("No AclProvider found for " + domainInstance.toString());
}
return null;
}
public List getProviders() {
return this.providers;
}
/**
* Sets the {@link AclProvider} objects to be used for ACL determinations.
*
* @param newList that should be used for ACL determinations
*
* @throws IllegalArgumentException if an invalid provider was included in the list
*/
public void setProviders(List newList) {
checkIfValidList(newList);
Iterator iter = newList.iterator();
while (iter.hasNext()) {
Object currentObject = null;
try {
currentObject = iter.next();
AclProvider attemptToCast = (AclProvider) currentObject;
} catch (ClassCastException cce) {
throw new IllegalArgumentException("AclProvider " + currentObject.getClass().getName()
+ " must implement AclProvider");
}
}
this.providers = newList;
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy