/*
* Copyright 2005-2006 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.strecks.injection.handler;
import javax.servlet.http.HttpServletRequest;
import org.strecks.constants.InfrastructureKeys;
import org.strecks.context.ActionContext;
import org.strecks.web.RedirectHelper;
import org.strecks.web.RedirectHelperImpl;
/**
* Injection handler to find a <code>RedirectHelper</code> instance from the
* <code>HttpServletRequest</code> by using the
* <code>HttpServletRequest.getAttribute(InfrastructureKeys.REDIRECT_HELPER)</code>. If this is
* <code>null</code>, it is added to the <code>HttpServletRequest</code> as an attribute under
* this key method, before being returned
* @author Phil Zoio
*/
public class RedirectHelperInjectionHandler implements InjectionHandler
{
public Object getValue(ActionContext injectionContext)
{
HttpServletRequest request = injectionContext.getRequest();
RedirectHelper redirectHelper = (RedirectHelper) request.getAttribute(InfrastructureKeys.REDIRECT_HELPER);
if (redirectHelper == null)
{
redirectHelper = new RedirectHelperImpl();
request.setAttribute(InfrastructureKeys.REDIRECT_HELPER, redirectHelper);
}
return redirectHelper;
}
}