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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
ActionService.java | 100% | 100% | 100% | 100% |
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// Copyright 2004, 2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package org.apache.tapestry.engine;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpSession;
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import org.apache.hivemind.ApplicationRuntimeException;
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import org.apache.hivemind.util.Defense;
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import org.apache.tapestry.IAction;
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import org.apache.tapestry.IComponent;
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import org.apache.tapestry.IPage;
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import org.apache.tapestry.IRequestCycle;
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import org.apache.tapestry.StaleSessionException;
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import org.apache.tapestry.Tapestry;
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import org.apache.tapestry.request.ResponseOutputStream;
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import org.apache.tapestry.services.LinkFactory;
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import org.apache.tapestry.services.ResponseRenderer;
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import org.apache.tapestry.services.ServiceConstants;
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/**
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* A context-sensitive service related to {@link org.apache.tapestry.form.Form}and
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* {@link org.apache.tapestry.link.ActionLink}. Encodes the page, component and an action id in the
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* service context.
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*
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* @author Howard Lewis Ship
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* @since 1.0.9
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*/
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public class ActionService implements IEngineService |
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{ |
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/** @since 3.1 */
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private ResponseRenderer _responseRenderer;
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/** @since 3.1 */
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private LinkFactory _linkFactory;
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/** @since 3.1 */
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private static final String ACTION = "action"; |
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/** @since 3.1 */
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private HttpServletRequest _request;
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public ILink getLink(IRequestCycle cycle, Object parameter)
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{ |
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Defense.isAssignable(parameter, ActionServiceParameter.class, "parameter"); |
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ActionServiceParameter asp = (ActionServiceParameter) parameter; |
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IComponent component = asp.getComponent(); |
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IPage activePage = cycle.getPage(); |
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IPage componentPage = component.getPage(); |
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Map parameters = new HashMap();
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boolean stateful = _request.getSession(false) != null; |
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parameters.put(ServiceConstants.SERVICE, Tapestry.ACTION_SERVICE); |
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parameters.put(ServiceConstants.COMPONENT, component.getIdPath()); |
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parameters.put(ServiceConstants.PAGE, activePage.getPageName()); |
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parameters.put(ServiceConstants.CONTAINER, activePage == componentPage ? null
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: componentPage.getPageName()); |
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parameters.put(ACTION, asp.getActionId()); |
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parameters.put(ServiceConstants.SESSION, stateful ? "T" : null); |
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return _linkFactory.constructLink(cycle, parameters, true); |
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} |
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public void service(IRequestCycle cycle, ResponseOutputStream output) throws ServletException, |
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IOException |
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{ |
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String componentId = cycle.getParameter(ServiceConstants.COMPONENT); |
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String componentPageName = cycle.getParameter(ServiceConstants.CONTAINER); |
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String activePageName = cycle.getParameter(ServiceConstants.PAGE); |
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String actionId = cycle.getParameter(ACTION); |
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boolean activeSession = cycle.getParameter(ServiceConstants.SESSION) != null; |
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IPage page = cycle.getPage(activePageName); |
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// Setup the page for the rewind, then do the rewind.
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cycle.activate(page); |
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IPage componentPage = componentPageName == null ? page : cycle.getPage(componentPageName);
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IComponent component = componentPage.getNestedComponent(componentId); |
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IAction action = null;
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try
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{ |
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action = (IAction) component; |
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} |
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catch (ClassCastException ex)
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{ |
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throw new ApplicationRuntimeException(EngineMessages.wrongComponentType( |
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component, |
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IAction.class), component, null, ex); |
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} |
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// Only perform the stateful check if the application was stateful
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// when the URL was rendered.
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if (activeSession && action.getRequiresSession())
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{ |
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HttpSession session = _request.getSession(); |
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if (session == null || session.isNew()) |
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throw new StaleSessionException(EngineMessages.requestStateSession(component), |
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componentPage); |
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} |
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cycle.rewindPage(actionId, action); |
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// During the rewind, a component may change the page. This will take
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// effect during the second render, which renders the HTML response.
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// Render that response.
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_responseRenderer.renderResponse(cycle, output); |
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} |
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public String getName()
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{ |
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return Tapestry.ACTION_SERVICE;
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} |
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/** @since 3.1 */
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public void setResponseRenderer(ResponseRenderer responseRenderer) |
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{ |
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_responseRenderer = responseRenderer; |
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} |
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/** @since 3.1 */
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public void setLinkFactory(LinkFactory linkFactory) |
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{ |
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_linkFactory = linkFactory; |
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} |
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/** @since 3.1 */
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public void setRequest(HttpServletRequest request) |
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{ |
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_request = request; |
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} |
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} |
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