Java tutorial
/** * Licensed under the GPL License. You may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html * * THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, * WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR * PURPOSE. */ package psiprobe.controllers.apps; import org.apache.catalina.Context; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.view.InternalResourceView; import org.springframework.web.servlet.view.RedirectView; import psiprobe.controllers.ContextHandlerController; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * Base class preventing "destructive" actions to be executed on the Probe's context. * * @author Vlad Ilyushchenko * @author Andy Shapoval */ public abstract class NoSelfContextHandlerController extends ContextHandlerController { /** The Constant logger. */ private static final Logger logger = LoggerFactory.getLogger(NoSelfContextHandlerController.class); /** The pass query string. */ private boolean passQueryString; /** * Checks if is pass query string. * * @return true, if is pass query string */ public boolean isPassQueryString() { return passQueryString; } /** * Sets the pass query string. * * @param passQueryString the new pass query string */ public void setPassQueryString(boolean passQueryString) { this.passQueryString = passQueryString; } @Override protected ModelAndView handleContext(String contextName, Context context, HttpServletRequest request, HttpServletResponse response) throws Exception { try { if (request.getContextPath().equals(contextName)) { throw new IllegalStateException( getMessageSourceAccessor().getMessage("probe.src.contextAction.cannotActOnSelf")); } executeAction(contextName); } catch (Exception e) { request.setAttribute("errorMessage", e.getMessage()); logger.error("Error during invocation", e); return new ModelAndView(new InternalResourceView(getViewName())); } return new ModelAndView(new RedirectView(request.getContextPath() + getViewName() + (isPassQueryString() ? "?" + request.getQueryString() : ""))); } /** * Execute action. * * @param contextName the context name * @throws Exception the exception */ protected abstract void executeAction(String contextName) throws Exception; }