Criação de um data provider

package corporate.hoteisadmin4;

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);

  }

 }

}

<?xml version="1.0" encoding="UTF-8" ?>

<ufs>

       <uf id="RJ" ></uf>

       <uf id="SP" ></uf>

       <uf id="MG" ></uf>

</ufs>