Visual Data Explorer: Initializing the Visual Data Explorer with a Data Exploration |
Data Source: Information Map
This example includes the following customization:
Please install the latest webAF template updates prior to building this example. For more information about the server-side example templates used by this example, see Web Application Example Templates and Built-in Web Application Templates and Options.
The following example is not meant to be a complete web application, rather it is to show how to use a particular component(s). The example does not address the issue of immediately freeing up resources when the user navigates off the web application or closes the web browser. Any necessary resources created in the example will stay around until the associated HTTPSession times out. If this example were used in a multi-user environment, it is possible to exhaust the available resources until HTTPSessions time out and free up their associated resources.
VisualDataExplorer
.omr_password
)
in the sas_metadata_source_omr.properties
file located in the web-inf\conf
directory. This password is used when
deploying Foundation Services. metadata-password
) under
the InfoMapViewerExampleControllerServlet's initial parameters in the
web.xml file located in the web-inf
directory. This password is used to
get a user and session context from the Foundation Services.
Replace the contents of the InfoMapViewerControllerServlet.java file with the following code:
package servlets; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.RequestDispatcher; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import com.sas.actionprovider.HttpActionProvider; import com.sas.services.discovery.DiscoveryService; import com.sas.services.discovery.DiscoveryServiceInterface; import com.sas.services.discovery.ServiceTemplate; import com.sas.services.session.SessionContextInterface; import com.sas.services.session.SessionServiceInterface; import com.sas.services.user.UserContextInterface; import com.sas.services.user.UserServiceInterface; public class InfoMapViewerExampleControllerServlet extends javax.servlet.http.HttpServlet { // Global webapp Strings private static final String ACTION_PROVIDER = "sas_actionProvider"; private static final String SAS_MODEL = "sas_model"; /* * doPost() Respond to the Post message. */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // Note: Calling doGet to provide same behavior to POST and GET HTTP // methods. doGet(request, response); } /* * doGet() Respond to the Get message. */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // Note: Add User DO_GET code here HttpSession session = request.getSession(); // Setup the ActionProvider HttpActionProvider sas_actionProvider = null; synchronized (session) { SessionContextInterface sessionContext = null; if (session != null) { sessionContext = (SessionContextInterface) session .getAttribute(SAS_MODEL); } if (sessionContext == null) { try { // Obtain the local discovery service DiscoveryServiceInterface discoveryService = DiscoveryService .defaultInstance(); // Use the discovery services to find a user service. UserServiceInterface userService = (UserServiceInterface) discoveryService.findService(new ServiceTemplate( new Class[] { UserServiceInterface.class })); ServletConfig sc = getServletConfig(); String domain = sc.getInitParameter("metadata-domain"); String username = sc.getInitParameter("metadata-userid"); String password = sc.getInitParameter("metadata-password"); UserContextInterface userContext = userService.newUser( username, password, domain); SessionServiceInterface sessionService = (SessionServiceInterface) discoveryService.findService(new ServiceTemplate( new Class[] { SessionServiceInterface.class })); // Create a session for this user and bind it to the user // context. sessionContext = sessionService .newSessionContext(userContext); userContext.setSessionContext(sessionContext); if (session != null) { session.setAttribute(SAS_MODEL, sessionContext); } } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); } } } synchronized (session) { if (session != null) { sas_actionProvider = (HttpActionProvider) session .getAttribute(ACTION_PROVIDER); } // if ActionProvider is null, create one and put it on the session if (sas_actionProvider == null) { sas_actionProvider = new com.sas.actionprovider.HttpActionProvider(); sas_actionProvider.setLocale(request.getLocale()); sas_actionProvider.setControllerURL(request.getContextPath() + "/InfoMapViewerExample"); sas_actionProvider.setName(ACTION_PROVIDER); // store object in its scope if (session != null) session.setAttribute(ACTION_PROVIDER, sas_actionProvider); } // else execute the ActionProvider command else { try { sas_actionProvider.executeCommand(request, response, response .getWriter()); } catch (Exception ex) { ex.printStackTrace(); } } } RequestDispatcher rd = null; String sas_forwardLocation = request .getParameter("sas_forwardLocation"); if (sas_forwardLocation != null) rd = getServletContext().getRequestDispatcher(sas_forwardLocation); else rd = getServletContext().getRequestDispatcher("/InfoMapViewerExampleViewer.jsp"); rd.forward(request, response); } }
<%@page import="com.sas.services.session.SessionContextInterface"%> <%@page import="com.sas.actionprovider.HttpActionProvider"%> <%@page import="com.sas.servlet.tbeans.dataexplorer.html.VisualDataExplorer"%> <%@page import="com.sas.servlet.tbeans.dataexplorer.html.VisualDataExplorerMenuBar"%> <%@page import="com.sas.dataexplorer.actionprovider.support.dataexplorer.VisualDataExplorerMenuBarAreaInterface"%> <%@page import="com.sas.actionprovider.ActionOrderList"%> <%@page import="com.sas.actionprovider.support.ActionProviderSupportTypes"%> <%@ page pageEncoding="UTF-8"%> <html> <head> <link href="styles/sasComponents.css" rel="stylesheet" type="text/css"> </head> <body style="margin: 0px;"> <% VisualDataExplorer vde = (VisualDataExplorer)session.getAttribute("vde"); if (vde == null) { SessionContextInterface model = (SessionContextInterface)session.getAttribute("sas_model"); vde = new VisualDataExplorer(model, "dataExplorationName" ); if (vde.getActionProvider() == null) { HttpActionProvider ap = (HttpActionProvider)session.getAttribute("sas_actionProvider"); vde.setActionProvider(ap); } vde.setId("vde"); HttpActionProvider ap = (HttpActionProvider)session.getAttribute("sas_actionProvider"); vde.setActionProvider(ap); session.setAttribute("vde", vde); } else //vde not null { if (vde.getActionProvider() == null) { HttpActionProvider ap = (HttpActionProvider)session.getAttribute("sas_actionProvider"); vde.setActionProvider(ap); } } vde.setRequest(request); vde.setResponse(response); vde.write(out); %> </body> </html>
vde = new VisualDataExplorer(model, "dataExplorationName" );
<%@page import="com.sas.dataexplorer.views.BookmarkInterface"%> <%@page import="com.sas.dataexplorer.views.DataExplorationInterface"%>
Object o = vde.getDataModel(); //get the active data exploration - //you must create the vde with a data exploration instead of a map //in the code above DataExplorationInterface dei = vde.getActiveDataExploration(); if (dei != null) { //get the bookmarks for this data exploration java.util.Collection bookmarks = dei.getBookmarks(); java.util.Iterator bmkiter = bookmarks.iterator(); BookmarkInterface bookmark = null; //go through the bookmarks until you find the one you're looking for while (bmkiter.hasNext()) { bookmark = (BookmarkInterface)bmkiter.next(); if (bookmark != null && bookmark.getName().equals("bookmarkName")) { //set the bookmark you found to be the active bookmark vde.setActiveBookmark(bookmark); break; } } }