generate report from java

package com.test;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.HashMap;

import org.eclipse.birt.report.engine.api.EngineConfig;
import org.eclipse.birt.report.engine.api.EngineConstants;
import org.eclipse.birt.report.engine.api.HTMLRenderContext;
import org.eclipse.birt.report.engine.api.HTMLRenderOption;
import org.eclipse.birt.report.engine.api.IReportRunnable;
import org.eclipse.birt.report.engine.api.IRunAndRenderTask;
import org.eclipse.birt.report.engine.api.ReportEngine;

public class BirtTest {

     public static void main(String[] args) {
          //Variables used to control BIRT Engine instance
          EngineConfig conf = null;
          ReportEngine eng = null;
          IReportRunnable design = null;
          IRunAndRenderTask task = null;
          HTMLRenderContext renderContext = null;
          HashMap contextMap = null;
          HTMLRenderOption options = null;
          //Now, setup the BIRT engine configuration. The Engine Home is hardcoded
          //here, this is probably better set in an environment variable or in
          //a configuration file. No other options need to be set
          conf = new EngineConfig();
          conf.setEngineHome("C:/eclipse-birt/eclipse/birt-runtime-4_2_0/ReportEngine");
       
          //Create new Report engine based off of the configuration
          eng = new ReportEngine( conf );
       
          //With our new engine, lets try to open the report design
          try
          {
               design = eng.openReportDesign("C:/sanker/birt/birt-test/new_report.rptdesign");
          }
          catch (Exception e)
          {
               System.err.println("An error occured during the opening of the report file!");
               e.printStackTrace();
               System.exit(-1);
          }
       
          //With the file open, create the Run and Render task to run the report
          task = eng.createRunAndRenderTask(design);
       
          //Set Render context to handle url and image locataions, and apply to the
          //task
          renderContext = new HTMLRenderContext();
          renderContext.setImageDirectory("image");
          contextMap = new HashMap();
          contextMap.put( EngineConstants.APPCONTEXT_HTML_RENDER_CONTEXT, renderContext );
          task.setAppContext( contextMap );
          ResultSet rs = getResultSet(); // a function that executes the query and returns resultset
          task.setParameterValue("myResultSet", rs);
          //This will set the output file location, the format to rener to, and
          //apply to the task
          options = new HTMLRenderOption();
          options.setOutputFileName("C:/sanker/birt/output/output.html");
          options.setOutputFormat("html");
          task.setRenderOption(options);
       
          try
          {
               task.run();
          }
          catch (Exception e)
          {
               e.printStackTrace();
          }
       
          eng.destroy();
     }
   
     static ResultSet getResultSet() {
    ResultSet rs = null;
    try {
Connection con = getConnection();
Statement stmt = con.createStatement();
stmt.execute("select id, name from A");
rs = stmt.getResultSet();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
    return rs;
     }
   
     static Connection getConnection() {
    try {
Class.forName("oracle.jdbc.driver.OracleDriver");
return DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","sanker","password");
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
    return null;
     }
}

/*******************************************************/

package com.test;

import java.sql.ResultSet;

import java.sql.SQLException;

import org.eclipse.birt.report.engine.api.script.IReportContext;

import org.eclipse.birt.report.engine.api.script.IUpdatableDataSetRow;

import org.eclipse.birt.report.engine.api.script.ScriptException;

import org.eclipse.birt.report.engine.api.script.eventadapter.ScriptedDataSetEventAdapter;

import org.eclipse.birt.report.engine.api.script.instance.IDataSetInstance;

public class MyScriptedSetAdapter extends ScriptedDataSetEventAdapter {

ResultSet resultSet;

@Override

public boolean fetch(IDataSetInstance dataSet, IUpdatableDataSetRow row)

throws ScriptException {

try {

if(resultSet.isAfterLast())

return false;// to indicate that there are no more rows left to process

row.setColumnValue("ID", resultSet.getInt(1));

row.setColumnValue("NAME", resultSet.getString(2));

resultSet.next();

return true; // to indicate that more rows to follow

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

return false;

}

}

@Override

public void open(IDataSetInstance dataSet) throws ScriptException {

super.open(dataSet);

try {

if(resultSet != null)

resultSet.next();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

@Override

public void beforeOpen(IDataSetInstance dataSet, IReportContext reportContext) throws ScriptException {

super.beforeOpen(dataSet, reportContext);

//retrieve the parameter myResultSet set from the java class in Step 1

System.out.println("myResultSet="+reportContext.getParameterValue("myResultSet"));

resultSet = (ResultSet)reportContext.getParameterValue("myResultSet");

}

}