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package org.apache.tapestry.engine; |
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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.*; |
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import org.apache.tapestry.event.BrowserEvent; |
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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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import org.apache.tapestry.web.WebRequest; |
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import org.apache.tapestry.web.WebSession; |
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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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39 | 0 | public class DirectService implements IEngineService |
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{ |
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protected ResponseRenderer _responseRenderer; |
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protected LinkFactory _linkFactory; |
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protected WebRequest _request; |
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private IRequestCycle _requestCycle; |
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public ILink getLink(boolean post, Object parameter) |
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{ |
55 | 0 | Defense.isAssignable(parameter, DirectServiceParameter.class, "parameter"); |
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57 | 0 | DirectServiceParameter dsp = (DirectServiceParameter) parameter; |
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59 | 0 | IComponent component = dsp.getDirect(); |
60 | 0 | IDirect direct = dsp.getDirect(); |
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70 | 0 | IPage activePage = _requestCycle.getPage(); |
71 | 0 | IPage componentPage = component.getPage(); |
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73 | 0 | Map parameters = new HashMap(); |
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75 | 0 | boolean stateful = _request.getSession(false) != null; |
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77 | 0 | parameters.put(ServiceConstants.PAGE, activePage.getPageName()); |
78 | 0 | parameters.put(ServiceConstants.COMPONENT, component.getIdPath()); |
79 | 0 | parameters.put(ServiceConstants.CONTAINER, componentPage == activePage ? null |
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: componentPage.getPageName()); |
81 | 0 | parameters.put(ServiceConstants.SESSION, stateful ? "T" : null); |
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84 | 0 | if (dsp.isAsync() || dsp.isJson()) { |
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86 | 0 | if (dsp.getUpdateParts() != null && dsp.getUpdateParts().length > 0) |
87 | 0 | parameters.put(ServiceConstants.UPDATE_PARTS, dsp.getUpdateParts()); |
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89 | 0 | if (dsp.isJson()) |
90 | 0 | parameters.put("json", String.valueOf(dsp.isJson())); |
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} |
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95 | 0 | parameters.put(ServiceConstants.PARAMETER, dsp.getServiceParameters()); |
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97 | 0 | return _linkFactory.constructLink(this, post, parameters, direct.isStateful()); |
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} |
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public void service(IRequestCycle cycle) throws IOException |
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{ |
102 | 0 | String componentId = cycle.getParameter(ServiceConstants.COMPONENT); |
103 | 0 | String componentPageName = cycle.getParameter(ServiceConstants.CONTAINER); |
104 | 0 | String activePageName = cycle.getParameter(ServiceConstants.PAGE); |
105 | 0 | boolean activeSession = cycle.getParameter(ServiceConstants.SESSION) != null; |
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107 | 0 | IPage page = cycle.getPage(activePageName); |
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109 | 0 | cycle.activate(page); |
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111 | 0 | IPage componentPage = componentPageName == null ? page : cycle.getPage(componentPageName); |
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113 | 0 | IComponent component = componentPage.getNestedComponent(componentId); |
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115 | 0 | IDirect direct = null; |
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try |
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{ |
119 | 0 | direct = (IDirect) component; |
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} |
121 | 0 | catch (ClassCastException ex) |
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{ |
123 | 0 | throw new ApplicationRuntimeException(EngineMessages.wrongComponentType( |
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component, |
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IDirect.class), component, null, ex); |
126 | 0 | } |
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131 | 0 | if (activeSession && direct.isStateful()) |
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{ |
133 | 0 | WebSession session = _request.getSession(false); |
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135 | 0 | if (session == null || session.isNew()) |
136 | 0 | throw new StaleSessionException(EngineMessages.requestStateSession(direct), |
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componentPage); |
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} |
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140 | 0 | Object[] parameters = _linkFactory.extractListenerParameters(cycle); |
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142 | 0 | triggerComponent(cycle, direct, parameters); |
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147 | 0 | _responseRenderer.renderResponse(cycle); |
148 | 0 | } |
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protected void triggerComponent(IRequestCycle cycle, IDirect direct, Object[] parameters) |
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{ |
154 | 0 | if (BrowserEvent.hasBrowserEvent(cycle)) |
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{ |
156 | 0 | BrowserEvent event = new BrowserEvent(cycle); |
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158 | 0 | Object[] parms = new Object[parameters.length + 1]; |
159 | 0 | System.arraycopy(parameters, 0, parms, 0, parameters.length); |
160 | 0 | parms[parms.length - 1] = event; |
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162 | 0 | cycle.setListenerParameters(parms); |
163 | 0 | } else |
164 | 0 | cycle.setListenerParameters(parameters); |
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166 | 0 | direct.trigger(cycle); |
167 | 0 | } |
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public String getName() |
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{ |
171 | 0 | return Tapestry.DIRECT_SERVICE; |
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} |
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public void setResponseRenderer(ResponseRenderer responseRenderer) |
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{ |
177 | 0 | _responseRenderer = responseRenderer; |
178 | 0 | } |
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public void setLinkFactory(LinkFactory linkFactory) |
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{ |
183 | 0 | _linkFactory = linkFactory; |
184 | 0 | } |
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public void setRequest(WebRequest request) |
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{ |
189 | 0 | _request = request; |
190 | 0 | } |
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public void setRequestCycle(IRequestCycle requestCycle) |
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{ |
195 | 0 | _requestCycle = requestCycle; |
196 | 0 | } |
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} |