Index: lams_bb_integration/src/org/lamsfoundation/ld/integration/blackboard/LessonManagerServlet.java
===================================================================
diff -u -r615a2ef7e23ebd72fd36a62324e12a82fe2e1ac1 -re6a8d68204cbc85c94ba7504185f5f0581abbe88
--- lams_bb_integration/src/org/lamsfoundation/ld/integration/blackboard/LessonManagerServlet.java	(.../LessonManagerServlet.java)	(revision 615a2ef7e23ebd72fd36a62324e12a82fe2e1ac1)
+++ lams_bb_integration/src/org/lamsfoundation/ld/integration/blackboard/LessonManagerServlet.java	(.../LessonManagerServlet.java)	(revision e6a8d68204cbc85c94ba7504185f5f0581abbe88)
@@ -298,4 +298,31 @@
         request.getRequestDispatcher("/modules/modifyLessonSuccess.jsp").forward(request, response);
     }
 
+    private void delete(HttpServletRequest request, HttpServletResponse response, Context ctx)
+	    throws InitializationException, BbServiceException, PersistenceException, IOException, ServletException {
+
+	//remove Lineitem object from Blackboard DB
+	String bbContentId = request.getParameter("content_id");
+	String courseId = request.getParameter("course_id");
+	LineitemUtil.removeLineitem(bbContentId, courseId);
+	
+	// remove internalContentId -> externalContentId key->value pair (it's used for GradebookServlet)
+	PortalExtraInfo pei = PortalUtil.loadPortalExtraInfo(null, null, "LamsStorage");
+	ExtraInfo ei = pei.getExtraInfo();
+	ei.clearEntry(bbContentId);
+	PortalUtil.savePortalExtraInfo(pei);
+	
+	//remove lesson from LAMS server
+	BbPersistenceManager bbPm = PersistenceServiceFactory.getInstance().getDbPersistenceManager();
+	Container bbContainer = bbPm.getContainer();
+	ContentDbLoader courseDocumentLoader = ContentDbLoader.Default.getInstance();
+	Id contentId = new PkId(bbContainer, CourseDocument.DATA_TYPE, bbContentId);
+	Content bbContent = courseDocumentLoader.loadById(contentId);
+	String lsId = bbContent.getLinkRef();
+	String userName = ctx.getUser().getUserName();
+	Boolean isDeletedSuccessfully = LamsSecurityUtil.deleteLesson(userName, lsId);
+	
+	System.out.println("Lesson (bbContentId:" + bbContentId + ") successfully deleted by userName:" + userName);
+    }
+
 }
Index: lams_bb_integration/src/org/lamsfoundation/ld/integration/util/LamsSecurityUtil.java
===================================================================
diff -u -rbedb398d185d135e7505f51352f0c1037031ed27 -re6a8d68204cbc85c94ba7504185f5f0581abbe88
--- lams_bb_integration/src/org/lamsfoundation/ld/integration/util/LamsSecurityUtil.java	(.../LamsSecurityUtil.java)	(revision bedb398d185d135e7505f51352f0c1037031ed27)
+++ lams_bb_integration/src/org/lamsfoundation/ld/integration/util/LamsSecurityUtil.java	(.../LamsSecurityUtil.java)	(revision e6a8d68204cbc85c94ba7504185f5f0581abbe88)
@@ -447,7 +447,6 @@
 	}
 
 	try {
-
 	    String timestamp = new Long(System.currentTimeMillis()).toString();
 	    String hash = generateAuthenticationHash(timestamp, username, serverId);
 	    String course = courseId != null ? "&courseId=" + URLEncoder.encode(courseId, "UTF8") : "";
@@ -493,6 +492,71 @@
 	}
 
     }
+
+    /**
+     * Deletes lesson on LAMS server through a LAMS webservice.
+     * 
+     * @param ctx
+     *            the blackboard contect, contains session data
+     * @param usernameFromParam
+     *            current user's username
+     * @param lsId
+     *            the lesson id to be deleted
+     * 
+     * @return boolean whether lesson was successfully deleted
+     */
+    public static Boolean deleteLesson(String userName, String lsId) {
+
+	String serverId = getServerID();
+	String serverAddr = getServerAddress();
+	String serverKey = getServerKey();
+
+	if (serverId == null || serverAddr == null || serverKey == null) {
+	    throw new RuntimeException("Unable to delete lesson. One or more LAMS configuration properties are null");
+	}
+
+	try {
+	    String timestamp = new Long(System.currentTimeMillis()).toString();
+	    String hash = generateAuthenticationHash(timestamp, userName, serverId);
+
+	    String serviceURL = serverAddr + "/services/xml/LessonManager?" + "serverId="
+		    + URLEncoder.encode(serverId, "utf8") + "&datetime=" + timestamp + "&username="
+		    + URLEncoder.encode(userName, "utf8") + "&hashValue=" + hash + "&method=removeLesson" + "&lsId="
+		    + lsId;
+
+	    logger.info("LAMS DELETE LESSON Req: " + serviceURL);
+
+	    // parse xml response and get the lesson id
+	    InputStream is = LamsSecurityUtil.callLamsServerPost(serviceURL);
+	    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+	    DocumentBuilder db = dbf.newDocumentBuilder();
+	    Document document = db.parse(is);
+	    return Boolean.parseBoolean(document.getElementsByTagName("Lesson").item(0).getAttributes()
+		    .getNamedItem("deleted").getNodeValue());
+	    
+	} catch (MalformedURLException e) {
+	    throw new RuntimeException("Unable to start LAMS lesson, bad URL: '" + serverAddr
+		    + "', please check lams.properties", e);
+	} catch (IllegalStateException e) {
+	    throw new RuntimeException(
+		    "LAMS Server timeout, did not get a response from the LAMS server. Please contact your systems administrator",
+		    e);
+	} catch (RemoteException e) {
+	    throw new RuntimeException("Unable to start LAMS lesson, RMI Remote Exception", e);
+	} catch (UnsupportedEncodingException e) {
+	    throw new RuntimeException("Unable to start LAMS lesson, Unsupported Encoding Exception", e);
+	} catch (ConnectException e) {
+	    throw new RuntimeException(
+		    "LAMS Server timeout, did not get a response from the LAMS server. Please contact your systems administrator",
+		    e);
+	} catch (IOException e) {
+		    throw new RuntimeException("Unable to start LAMS lesson. " + e.getMessage()
+			    + " Please contact your system administrator.", e);
+	} catch (Exception e) {
+	    throw new RuntimeException("Unable to start LAMS lesson. Please contact your system administrator.", e);
+	}
+
+    }
     
     /**
      * Clones lessons in lams through a LAMS webservice using the lsID & courseId parameter.