1 files changed, 119 insertions, 0 deletions
diff --git a/plugins/org.eclipse.emf.cdo.examples.server/src/org/eclipse/emf/cdo/examples/server/AbstractTemplateServlet.java b/plugins/org.eclipse.emf.cdo.examples.server/src/org/eclipse/emf/cdo/examples/server/AbstractTemplateServlet.java
new file mode 100644
index 0000000000..3684dedf62
--- /dev/null
+++ b/plugins/org.eclipse.emf.cdo.examples.server/src/org/eclipse/emf/cdo/examples/server/AbstractTemplateServlet.java
@@ -0,0 +1,119 @@
+/**
+ * Copyright (c) 2004 - 2010 Eike Stepper (Berlin, Germany) and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Eike Stepper - initial API and implementation
+ *
+ *  Initial Publication:
+ *    Eclipse Magazin - http://www.eclipse-magazin.de
+ */
+package org.eclipse.emf.cdo.examples.server;
+
+import org.eclipse.net4j.util.io.IOUtil;
+
+import org.apache.commons.lang.StringEscapeUtils;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.text.NumberFormat;
+
+/**
+ * @author Eike Stepper
+ */
+public abstract class AbstractTemplateServlet extends HttpServlet
+{
+  private static final long serialVersionUID = 1L;
+
+  private Object template;
+
+  private Method method;
+
+  public AbstractTemplateServlet(Class<?> templateClass) throws InstantiationException, IllegalAccessException,
+      SecurityException, NoSuchMethodException
+  {
+    method = templateClass.getMethod("generate", Object.class);
+    template = templateClass.newInstance();
+  }
+
+  @Override
+  public final void init() throws ServletException
+  {
+    System.out.println("INIT " + getClass().getSimpleName());
+    doInit();
+    super.init();
+  }
+
+  @Override
+  public final void destroy()
+  {
+    System.out.println("DESTROY " + getClass().getSimpleName());
+    doDestroy();
+    super.destroy();
+  }
+
+  @Override
+  protected final void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
+  {
+    doPost(req, resp);
+  }
+
+  @Override
+  protected final void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
+  {
+    PrintWriter writer = resp.getWriter();
+
+    try
+    {
+      Object argument = getTemplateArgument(req);
+      String html = (String)method.invoke(template, argument);
+      writer.print(html);
+    }
+    catch (IllegalArgumentException ex)
+    {
+      throw new ServletException(ex);
+    }
+    catch (IllegalAccessException ex)
+    {
+      throw new ServletException(ex);
+    }
+    catch (InvocationTargetException ex)
+    {
+      throw new ServletException(ex);
+    }
+    finally
+    {
+      IOUtil.close(writer);
+    }
+  }
+
+  protected void doInit()
+  {
+  }
+
+  protected void doDestroy()
+  {
+  }
+
+  protected abstract Object getTemplateArgument(HttpServletRequest req);
+
+  public static String html(String value)
+  {
+    return StringEscapeUtils.escapeHtml(value);
+  }
+
+  public static String html(double value)
+  {
+    return html(NumberFormat.getCurrencyInstance().format(value));
+  }
+}