1 files changed, 112 insertions, 0 deletions
diff --git a/org.eclipse.help.webapp/src/org/eclipse/help/internal/webapp/service/IndexFragmentService.java b/org.eclipse.help.webapp/src/org/eclipse/help/internal/webapp/service/IndexFragmentService.java
new file mode 100644
index 000000000..1fae9c881
--- /dev/null
+++ b/org.eclipse.help.webapp/src/org/eclipse/help/internal/webapp/service/IndexFragmentService.java
@@ -0,0 +1,112 @@
+/*******************************************************************************
+ * Copyright (c) 2011 IBM Corporation 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:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.help.internal.webapp.service;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.eclipse.help.internal.webapp.parser.IndexFragmentParser;
+import org.eclipse.help.internal.webapp.servlet.IndexFragmentServlet;
+import org.eclipse.help.internal.webapp.utils.Utils;
+
+/**
+ * Returns <code>xml</code> or <code>json</code> representing selected parts
+ * of the index.
+ * 
+ * <p>This servlet is called on infocenters by client workbenches
+ * configured for remote help in order to gather selected parts of the index.
+ * 
+ * <p>Extends the {@link org.eclipse.help.internal.webapp.servlet.IndexFragmentServlet}
+ * servlet.
+ * 
+ * @param start			- (optional) represents the part of the index to
+ * 						  start reading from
+ * @param size			- (optional) indicates the number of entries to read,
+ * 						  no size parameter or a negative size parameter
+ * 						  indicates that all entries which match the start
+ * 						  letters should be displayed
+ * @param mode			- (optional) specifies either <code>next</code> or
+ * 						  <code>previous</code>
+ * @param entry			- (optional) represents the starting point relative
+ * 						  to the start
+ * @param showAll		- (optional) specifies  either <code>on</code> or
+ * 						  <code>off</code> to set filter enablement of 
+ * 						  activity support
+ * @param showconfirm	- (optional) specifies <code>true</code> or
+ * 						  <code>false</code> to show/hide all confirm dialog
+ * @param lang			- (optional) specifies the locale
+ * @param returnType	- (Optional) specifies the return type of the servlet.
+ * 						  Accepts either <code>xml</code> (default) or
+ * 						  <code>json</code>
+ * 
+ * @return		Selected parts of the index, either as <code>xml</code>
+ * 				(default) or <code>json</code>
+ * 
+ * @version	$Version$
+ * 
+ **/
+public class IndexFragmentService extends IndexFragmentServlet {
+
+	private static final long serialVersionUID = 1L;
+
+	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
+			throws ServletException, IOException {
+		
+		req.setCharacterEncoding("UTF-8"); //$NON-NLS-1$
+		// Set standard HTTP/1.1 no-cache headers.
+		resp.setHeader("Cache-Control",  //$NON-NLS-1$
+				"no-store, no-cache, must-revalidate"); //$NON-NLS-1$
+		resp.setContentType("application/xml; charset=UTF-8"); //$NON-NLS-1$
+		
+		String response = processRequest(req, resp);
+		
+		String returnType = req.getParameter(Utils.RETURN_TYPE);
+		boolean boolIsJSON = (returnType != null 
+				&& returnType.equalsIgnoreCase(Utils.JSON));
+		
+		// If JSON output is required
+		if (boolIsJSON) {
+			resp.setContentType("text/plain"); //$NON-NLS-1$
+			response = getJSONResponse(response);
+		}
+		
+		resp.getWriter().write(response);
+	}
+
+	protected String getJSONResponse(String response)
+			throws IOException {
+		IndexFragmentParser indexParser = new IndexFragmentParser();
+		InputStream is = null;
+		try {
+			if (response != null) {
+				is = new ByteArrayInputStream(response.getBytes("UTF-8")); //$NON-NLS-1$
+				indexParser.parse(is);
+			}
+
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+		
+		if (is != null)
+			is.close();
+
+		// Call after the catch.
+		// An empty JSON is created if any Exception is thrown
+		// Else returns the complete JSON
+		return indexParser.toJSON();
+	}
+
+}