HowTo: Vaadin on Domino (2)

When running your own servlet, you eventually want to access the Domino environment. To do this, some changes has to be made to the HelloVaadin plug-in.

1. Open the „MANFIFEST.MF“ and open the „Dependencies“ tab

2. Add the plug-in „com.ibm.osgi.domino.core“ to the list of required plug-ins

Save the „MANIFEST.MF“

3. Now we can use „com.ibm.domino.osgi.core.context.ContextInfo“ to access the Domino environment in HelloVaadinUI

package ch.hasselba.vaadin;

import lotus.domino.Database;
import lotus.domino.NotesException;
import lotus.domino.Session;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinServlet;
import com.vaadin.shared.ui.label.ContentMode;
import com.vaadin.ui.Label;
import com.vaadin.ui.UI; 
import com.vaadin.ui.VerticalLayout;
import com.ibm.domino.osgi.core.context.ContextInfo;

@SuppressWarnings("serial")
public class HelloVaadinUI extends UI {
    
    public static class Servlet extends VaadinServlet {
    }
    
    @Override
    protected void init(VaadinRequest request) {
    
        VerticalLayout layout = new VerticalLayout();
        setContent(layout);
        layout.setSizeFull();
        
        String dbPath = "";
        String userName = "";
        String queryString = "";
       
        try {
            
            // get the current database
            Database db = ContextInfo.getUserDatabase();
            if( db != null )
                dbPath = db.getFilePath();
            
            // get the current session
            Session session = ContextInfo.getUserSession();
            if( session != null )
                userName = session.getEffectiveUserName();
            
            // get the query string
            queryString = ContextInfo.getServerVariable("QUERY_STRING");
            
        } catch (NotesException e) {
            e.printStackTrace();
        }
        
        Label label = new Label();
        label.setValue("<h1>Hello " + userName + "!</h1>");
        label.setContentMode(ContentMode.HTML);
        
        Label labelDB = new Label();
        labelDB.setValue("<p>DB Path: " + dbPath + "</p>");
        labelDB.setContentMode(ContentMode.HTML);
        
        Label labelQuery = new Label();
        labelQuery.setValue("<p>Query: " + queryString + "</p>");
        labelQuery.setContentMode(ContentMode.HTML);
        
        layout.addComponents(label, labelDB, labelQuery);
    }

}

4. When opening the application inside the names.nsf, the result looks like this: