import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
+import java.lang.reflect.Constructor;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Collection;
import java.util.Date;
import java.util.Enumeration;
-import java.util.HashMap;
import java.util.Iterator;
-import java.util.LinkedList;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
-import javax.servlet.http.HttpSessionBindingEvent;
-import javax.servlet.http.HttpSessionBindingListener;
import org.xml.sax.SAXException;
import com.itmill.toolkit.ui.Window;
/**
- * This servlet connects IT Mill Toolkit Application to Web. This servlet
- * replaces both WebAdapterServlet and AjaxAdapterServlet.
+ * This servlet connects IT Mill Toolkit Application to Web.
*
* @author IT Mill Ltd.
* @version
* @VERSION@
- * @since 4.0
+ * @since 5.0
*/
public class ApplicationServlet extends HttpServlet {
private static WeakHashMap licensePrintedForApplicationClass = new WeakHashMap();
- // TODO Should default or base theme be the default?
- protected static final String DEFAULT_THEME = "base";
-
private static final String RESOURCE_URI = "/RES/";
private static final String AJAX_UIDL_URI = "/UIDL/";
"If debug parameter is given for an application, it must be 'true' or 'false'");
this.debugMode = debug;
+ // Gets custom class loader
+ String classLoaderName = getApplicationOrSystemProperty(
+ "ClassLoader", null);
+ ClassLoader classLoader;
+ if (classLoaderName == null)
+ classLoader = getClass().getClassLoader();
+ else {
+ try {
+ Class classLoaderClass = getClass().getClassLoader().loadClass(classLoaderName);
+ Constructor c = classLoaderClass.getConstructor(new Class[] {ClassLoader.class});
+ classLoader = (ClassLoader) c.newInstance(new Object[] {getClass().getClassLoader()});
+ } catch (Exception e) {
+ Log.error("Could not find specified class loader: " + classLoaderName);
+ throw new ServletException(e);
+ }
+ }
+
// Loads the application class using the same class loader
// as the servlet itself
- ClassLoader loader = this.getClass().getClassLoader();
try {
- this.applicationClass = loader.loadClass(applicationClassName);
+ this.applicationClass = classLoader.loadClass(applicationClassName);
} catch (ClassNotFoundException e) {
throw new ServletException("Failed to load application class: "
+ applicationClassName);
}
+
}
/**
protected void service(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
- // Transformer and output stream for the result
- OutputStream out = response.getOutputStream();
Application application = null;
try {
// Gets the application
application = getApplication(request);
- // Creates application if it doesn't exist
- if (application == null)
- application = createApplication(request);
-
+
// Sets the last application request date
synchronized (applicationToLastRequestDate) {
applicationToLastRequestDate.put(application, new Date());
return;
}
- // Returns blank page, if no window found
- if (window == null) {
- response.setContentType("text/html");
- BufferedWriter page = new BufferedWriter(
- new OutputStreamWriter(out));
- page.write("<html><head><script>");
- // WAS GENERATE WINDOW SCRIPT
- page.write("</script></head><body>");
- page
- .write("The requested window has been removed from application.");
- page.write("</body></html>");
- page.close();
-
- return;
- }
-
// Sets terminal type for the window, if not already set
if (window.getTerminal() == null) {
// TODO !!!!
window.setTerminal(new WebBrowser());
}
- // Finds theme
- String themeName = window.getTheme() != null ? window
- .getTheme() : DEFAULT_THEME;
+ // Finds theme name
+ String themeName = window.getTheme();
if (request.getParameter("theme") != null) {
themeName = request.getParameter("theme");
}
if (handleResourceRequest(request, response, themeName))
return;
- writeAjaxPage(request, response, out,
+ writeAjaxPage(request, response,
window, themeName);
}
}
* represented by the given URL.
*/
private void writeAjaxPage(HttpServletRequest request,
- HttpServletResponse response, OutputStream out,
+ HttpServletResponse response,
Window window, String themeName) throws IOException, MalformedURLException {
response.setContentType("text/html");
- BufferedWriter page = new BufferedWriter(new OutputStreamWriter(out));
+ BufferedWriter page = new BufferedWriter(new OutputStreamWriter(response.getOutputStream()));
page
.write("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" "
* @throws MalformedURLException
* if the application is denied access to the persistent data
* store represented by the given URL.
+ * @throws SAXException
+ * @throws LicenseViolation
+ * @throws InvalidLicenseFile
+ * @throws LicenseSignatureIsInvalid
+ * @throws LicenseFileHasNotBeenRead
+ * @throws IllegalAccessException
+ * @throws InstantiationException
*/
private Application getApplication(HttpServletRequest request)
- throws MalformedURLException {
+ throws MalformedURLException, LicenseFileHasNotBeenRead,
+ LicenseSignatureIsInvalid, InvalidLicenseFile, LicenseViolation,
+ SAXException, IllegalAccessException, InstantiationException {
// Ensures that the session is still valid
- HttpSession session = request.getSession(false);
- if (session == null)
- return null;
+ HttpSession session = request.getSession(true);
// Gets application list for the session.
Collection applications = WebApplicationContext.getApplicationContext(session).getApplications();
// Search for the application (using the application URI) from the list
- Application application = null;
- for (Iterator i = applications.iterator(); i.hasNext()
- && application == null;) {
+ for (Iterator i = applications.iterator(); i.hasNext();) {
Application a = (Application) i.next();
String aPath = a.getURL().getPath();
String servletPath = request.getContextPath()
+ request.getServletPath();
if (servletPath.length() < aPath.length())
servletPath += "/";
- if (servletPath.equals(aPath))
- application = a;
- }
+ if (servletPath.equals(aPath)) {
- // Removes stopped applications from the list
- if (application != null && !application.isRunning()) {
- WebApplicationContext.getApplicationContext(session).removeApplication(application);
- application = null;
+ // Found a running application
+ if (a.isRunning())
+ return a;
+
+ // Application has stopped, so remove it before creating a new application
+ WebApplicationContext.getApplicationContext(session).removeApplication(a);
+ }
}
+
+ // Creates application, because a running one was not found
+ WebApplicationContext context = WebApplicationContext.getApplicationContext(request.getSession());
+ URL applicationUrl = getApplicationUrl(request);
- return application;
+ // Creates new application and start it
+ try {
+ Application application = (Application) this.applicationClass.newInstance();
+ context.addApplication(application);
+
+ // Sets initial locale from the request
+ application.setLocale(request.getLocale());
+
+ // Starts application and check license
+ initializeLicense(application);
+ application.start(applicationUrl, this.applicationProperties,
+ context);
+ checkLicense(application);
+
+ return application;
+
+ } catch (IllegalAccessException e) {
+ Log.error("Illegal access to application class "
+ + this.applicationClass.getName());
+ throw e;
+ } catch (InstantiationException e) {
+ Log.error("Failed to instantiate application class: "
+ + this.applicationClass.getName());
+ throw e;
+ }
}
- /**
- * Creates a new application.
- *
- * @param request
- * the HTTP request.
- * @return the New application instance.
- * @throws MalformedURLException
- * if the application is denied access to the persistent data
- * store represented by the given URL.
- * @throws InstantiationException
- * if a new instance of the class cannot be instantiated.
- * @throws IllegalAccessException
- * if it does not have access to the property accessor method.
- * @throws LicenseFileHasNotBeenRead
- * if the license file has not been read.
- * @throws LicenseSignatureIsInvalid
- * if the license file has been changed or signature is
- * otherwise invalid.
- * @throws InvalidLicenseFile
- * if the license file is not of correct XML format.
- * @throws LicenseViolation
- *
- * @throws SAXException
- * the Error parsing the license file.
- */
- private Application createApplication(HttpServletRequest request)
- throws MalformedURLException, InstantiationException,
- IllegalAccessException, LicenseFileHasNotBeenRead,
- LicenseSignatureIsInvalid, InvalidLicenseFile, LicenseViolation,
- SAXException {
-
- WebApplicationContext context = WebApplicationContext.getApplicationContext(request.getSession());
- URL applicationUrl = getApplicationUrl(request);
-
- // Creates new application and start it
- try {
- Application application = (Application) this.applicationClass.newInstance();
- context.addApplication(application);
-
- // Sets initial locale from the request
- application.setLocale(request.getLocale());
-
- // Starts application and check license
- initializeLicense(application);
- application.start(applicationUrl, this.applicationProperties,
- context);
- checkLicense(application);
-
- return application;
-
- } catch (IllegalAccessException e) {
- Log.error("Illegal access to application class "
- + this.applicationClass.getName());
- throw e;
- } catch (InstantiationException e) {
- Log.error("Failed to instantiate application class: "
- + this.applicationClass.getName());
- throw e;
- }
- }
/**
*
private Throwable throwable;
- /**
- *
- * @param owner
- * @param throwable
- */
- private ParameterHandlerErrorImpl(ParameterHandler owner,
- Throwable throwable) {
- this.owner = owner;
- this.throwable = throwable;
- }
/**
* Gets the contained throwable.
projects / vaadin-framework.git / commitdiff