RequestContext.java

/**
 * Copyright (C) 2012 Red Hat, Inc. and/or its affiliates.
 *
 * 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.jbpm.formModeler.service.bb.mvc.controller;

public class RequestContext {

    /**
     * The thread local variable that stores the request context.
     */
    private static ThreadLocal threadLocalCtx = new ThreadLocal();

    /**
     * Initialize a request context instance.
     *
     * @param request The request instance associated to the current request thread.
     * @return The request context.
     */
    public static RequestContext init(CommandRequest request) {
        RequestContext ctx = new RequestContext(request);
        threadLocalCtx.set(ctx);
        return ctx;
    }

    /**
     * Destroy a request context instance.
     *
     * @return The request context.
     */
    public static void destroy() {
        threadLocalCtx.set(null);
    }

    /**
     * Retrieve the request context instance associated to the current request thread.
     *
     * @return The request context.
     */
    public static RequestContext getCurrentContext() {
        return (RequestContext) threadLocalCtx.get();
    }

    private CommandRequest request;

    RequestContext(CommandRequest request) {
        this.request = request;
    }

    public CommandRequest getRequest() {
        return request;
    }
}