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Posted to commits@ofbiz.apache.org by ja...@apache.org on 2006/12/12 03:29:24 UTC
svn commit: r485986 -
/incubator/ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/event/JSONServiceEventHandler.java
Author: jaz
Date: Mon Dec 11 18:29:24 2006
New Revision: 485986
URL: http://svn.apache.org/viewvc?view=rev&rev=485986
Log:
added event handler to wrap around the service event handler and return the output as a JSONObject (for use w/ AJAX)
Added:
incubator/ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/event/JSONServiceEventHandler.java (with props)
Added: incubator/ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/event/JSONServiceEventHandler.java
URL: http://svn.apache.org/viewvc/incubator/ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/event/JSONServiceEventHandler.java?view=auto&rev=485986
==============================================================================
--- incubator/ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/event/JSONServiceEventHandler.java (added)
+++ incubator/ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/event/JSONServiceEventHandler.java Mon Dec 11 18:29:24 2006
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2001-2006 The Apache Software Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package org.ofbiz.webapp.event;
+
+import java.io.IOException;
+import java.io.Writer;
+import java.util.Enumeration;
+import java.util.Map;
+import java.util.List;
+import javax.servlet.ServletContext;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import javolution.util.FastMap;
+import net.sf.json.JSONObject;
+
+import org.ofbiz.base.util.Debug;
+
+/**
+ * JSONServiceEventHandler - JSON Object Wrapper around the ServiceEventHandler
+ */
+public class JSONServiceEventHandler implements EventHandler {
+
+ public static final String module = JSONServiceEventHandler.class.getName();
+ protected EventHandler service;
+
+ public void init(ServletContext context) throws EventHandlerException {
+ this.service = new ServiceEventHandler();
+ this.service.init(context);
+ }
+
+ public String invoke(String eventPath, String eventMethod, HttpServletRequest request, HttpServletResponse response) throws EventHandlerException {
+ // call into the service handler for parameters parsing and invocation
+ String respCode = service.invoke(eventPath, eventMethod, request, response);
+
+ // pull out the service response from the request attribute
+ Map attrMap = getAttributesAsMap(request);
+
+ // create a JSON Object for return
+ JSONObject json = JSONObject.fromMap(attrMap);
+ String jsonStr = json.toString();
+ if (jsonStr == null) {
+ throw new EventHandlerException("JSON Object was empty; fatal error!");
+ }
+
+ // set the X-JSON content type
+ response.setContentType("application/x-json");
+ response.setContentLength(jsonStr.length());
+
+ // return the JSON String
+ Writer out;
+ try {
+ out = response.getWriter();
+ out.write(jsonStr);
+ out.flush();
+ } catch (IOException e) {
+ throw new EventHandlerException("Unable to get response writer", e);
+ }
+
+ return respCode;
+ }
+
+ private Map getAttributesAsMap(HttpServletRequest request) {
+ Map attrMap = FastMap.newInstance();
+ Enumeration en = request.getAttributeNames();
+ while (en.hasMoreElements()) {
+ String name = (String) en.nextElement();
+ Object val = request.getAttribute(name);
+ if (val instanceof String || val instanceof Number || val instanceof Map || val instanceof List) {
+ Debug.log("Adding attribute to JSON output: " + name, module);
+ attrMap.put(name, val);
+ }
+ }
+
+ return attrMap;
+ }
+}
Propchange: incubator/ofbiz/trunk/framework/webapp/src/org/ofbiz/webapp/event/JSONServiceEventHandler.java
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