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/*
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* Angkor Web Framework
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3
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*
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* Distributable under LGPL license.
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* See terms of license at gnu.org.
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*/
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package com.tirsen.angkor;
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10
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpSession;
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import java.io.IOException;
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/**
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* TODO document ApplicationFactory
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*
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* <!-- $Id: ApplicationFactory.java,v 1.3 2002/10/13 19:59:22 tirsen Exp $ -->
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* <!-- $Author: tirsen $ -->
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*
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* @author Jon Tirs´n (tirsen@users.sourceforge.net)
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* @version $Revision: 1.3 $
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*/
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public class ApplicationFactory
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{
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private static Log logger = LogFactory.getLog(ApplicationFactory.class);
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private Class applicationClass;
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private HttpSession session;
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3
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public ApplicationFactory(HttpSession session)
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{
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this.session = session;
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}
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2
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public Application getApplication()
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{
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Application application = null;
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2
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try
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{
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application = (Application) getSessionAttribute(getApplicationSessionAttributeName());
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}
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catch (Exception e)
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{
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throw new RuntimeException("Failed to access application:" + e.getMessage());
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}
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2
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if (application == null)
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{
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0
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throw new IllegalStateException("Application has not been initialized for this request you need to deploy the ApplicationFilter correctly.");
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}
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return application;
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}
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private String getApplicationSessionAttributeName()
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{
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//return getApplicationPath() + "/application";
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// TODO
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return "application";
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}
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2
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public void ensureApplicationInit(Class applicationClass) throws IOException, ServletException
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64
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{
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Application application = (Application) getSessionAttribute(getApplicationSessionAttributeName());
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2
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if (application == null)
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{
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2
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try
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{
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application = (Application) applicationClass.newInstance();
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}
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catch (Exception e)
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{
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0
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logger.error("could not instantiate application");
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throw new ServletException("could not instantiate application: " + e.getMessage());
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}
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2
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setApplication(application);
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}
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}
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80
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81
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3
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public void setApplication(Application application)
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{
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3
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setSessionAttribute(getApplicationSessionAttributeName(), application);
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84
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}
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85
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86
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4
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protected Object getSessionAttribute(String attribute)
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87
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{
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4
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return session.getAttribute(attribute);
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89
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}
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90
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91
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3
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protected void setSessionAttribute(String attribute, Object value)
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92
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{
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3
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session.setAttribute(attribute, value);
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94
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}
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95
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}
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96
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