Creating a data provider

Implementation of a data provider so that the source is populated from an external source.

package corporate.hoteisadmin3;
import java.io.File;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import lumis.doui.source.*;
import lumis.portal.PortalException;
import lumis.util.ITransaction;
import lumis.util.XmlUtil;
import lumis.portal.authentication.SessionConfig;
public class UFDataProvider implements IDataProvider<TabularSource<?>>
{
       public void loadData(SessionConfig sessionConfig, TabularSource<?> source, ITransaction transaction) throws PortalException
       {
             File ufs = new File("c:\\ufs.xml");
             Document ufsDom = XmlUtil.getDocument(ufs);
            
             TabularData tabularData = source.getData();
            
             Node[] ufNodes = XmlUtil.selectNodes("ufs/uf", ufsDom);
                   
             for(Node ufNode : ufNodes)
             {
                    ISourceData newRow = tabularData.addRow();
                   
                    String id = XmlUtil.readAttributeString("id", ufNode);
                   
                    newRow.put("uf", id);
             }
       }
}

The XML file referenced in the data provider, which contains information about UFs, should be located, for example, at c:/ufs.xml: