/*
* Copyright 2013 The Sculptor Project Team, including the original
* author or authors.
*
* 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.sculptor.framework.context;
/**
* Helper class that can be used to store & access the ServiceContext object in
* the ThreadLocal memory, and in that way make the ServiceContext object
* available for all objects taking part in handling a request in the EJB tier
* without having to pass the context object to all participating methods.
* <p>
*
* <em>Don't use this to pass ServiceContext in remote method calls.</em>
*
* @author Patrik Nordwall
*/
public class ServiceContextStore {
// thread-local storage
private static ThreadLocal<ServiceContext> threadLocal = new ThreadLocal<ServiceContext>();
/**
* Sets the service-context in the thread-local storage.
*/
public static void set(ServiceContext ctx) {
threadLocal.set(ctx);
}
/**
* Gets the service-context in the thread-local storage.
*
* @return ServiceContext of this thread
*/
public static ServiceContext get() {
return threadLocal.get();
}
/**
* Current user from ServiceContext. If ServiceContext is not set then
* {@link ServiceContextFactory.SYSTEM_USER} is returned.
*/
public static String getCurrentUser() {
ServiceContext ctx = ServiceContextStore.get();
String currentUser;
if (ctx == null) {
currentUser = ServiceContextFactory.SYSTEM_USER;
} else {
currentUser = ctx.getUserId();
}
if (currentUser == null) {
currentUser = ServiceContextFactory.UNKNOWN_USER;
}
return currentUser;
}
}