Visual Data Explorer: Initializing the Visual Data Explorer Programmatically |
Data Source: Information Map
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 is 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 InfoMapOLAPTableViewExampleControllerServlet'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.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, "mapName" ); vde.setId("vde"); HttpActionProvider ap = (HttpActionProvider)session.getAttribute("sas_actionProvider"); vde.setActionProvider(ap); session.setAttribute("vde", vde); } 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>
InfoMapViewerExampleViewer.jsp
file in the Files Tab of the Project Navigator. Replace the mapName string
in the following code:
vde = new VisualDataExplorer(model, "mapName" );
with your information map URL string.