Null pointer exception while creating report engine.

vineethakp

This is my code for combining two reports.


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package com.report.test;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.logging.Level;
import org.eclipse.birt.core.exception.BirtException;
import org.eclipse.birt.core.framework.Platform;
import org.eclipse.birt.report.engine.api.EngineConfig;
import org.eclipse.birt.report.engine.api.IReportEngine;
import org.eclipse.birt.report.engine.api.IReportEngineFactory;
import org.eclipse.birt.report.engine.api.IReportRunnable;
import org.eclipse.birt.report.engine.api.IRunAndRenderTask;
import org.eclipse.birt.report.engine.api.PDFRenderOption;

public class Combine {

public void runReport() throws BirtException, IOException
{
IReportEngine iReportEngine =null;
EngineConfig engineConfig = null;
try
{
engineConfig = new EngineConfig();
engineConfig.setEngineHome("C:\\birt-runtime-2_6_2\\birt-runtime-2_6_2\\ReportEngine");
System.out.println("Setting Engine Home");
engineConfig.setLogConfig(null, Level.OFF);

Platform.startup(engineConfig);
System.out.println("Platform Started");

IReportEngineFactory iReportEngineFactory = (IReportEngineFactory) Platform.createFactoryObject(IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY);
iReportEngine = iReportEngineFactory.createReportEngine(engineConfig);
System.out.println("Report Engine Created");
}
catch (Exception e) {
e.printStackTrace();
}

IReportRunnable design1 = iReportEngine.openReportDesign("F:\\MyWorkSpace\\Merging\\WebRoot\\reports\\Report_A.rptdesign");
IReportRunnable design2 = iReportEngine.openReportDesign("F:\\MyWorkSpace\\Merging\\WebRoot\\reports\\Report_B.rptdesign");

IRunAndRenderTask iRunAndRenderTask = iReportEngine.createRunAndRenderTask(design1);


FileOutputStream fileOutputStream1 = new FileOutputStream("C/output/combined.pdf", true);
PDFRenderOption pdfRenderOption = new PDFRenderOption();
pdfRenderOption.setOutputStream(fileOutputStream1);
pdfRenderOption.setOutputFormat("PDF");
iRunAndRenderTask.setRenderOption(pdfRenderOption);
iRunAndRenderTask.run();

iRunAndRenderTask = iReportEngine.createRunAndRenderTask(design2);
FileOutputStream fileOutputStream2 = new FileOutputStream("C/output/combined.pdf", true);
pdfRenderOption.setOutputStream(fileOutputStream2);
iRunAndRenderTask.setRenderOption(pdfRenderOption);
iRunAndRenderTask.run();

fileOutputStream1.flush();
fileOutputStream2.flush();
fileOutputStream1.close();
fileOutputStream2.close();

iRunAndRenderTask.close();
iReportEngine.destroy();
Platform.shutdown();
System.out.println("Finished");
}

public static void main(String args[]) throws FileNotFoundException, BirtException
{
try {
Combine combine = new Combine();
combine.runReport();
}
catch (Exception e)
{
e.printStackTrace();
}

}

}
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But i am getting this Exception.

java.lang.NullPointerException
at org.eclipse.birt.report.engine.api.impl.ReportEngine$EngineExtensionManager.<init>(ReportEngine.java:784)
at org.eclipse.birt.report.engine.api.impl.ReportEngine.<init>(ReportEngine.java:109)
at org.eclipse.birt.report.engine.api.impl.ReportEngineFactory$1.run(ReportEngineFactory.java:18)
at org.eclipse.birt.report.engine.api.impl.ReportEngineFactory$1.run(ReportEngineFactory.java:1)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.birt.report.engine.api.impl.ReportEngineFactory.createReportEngine(ReportEngineFactory.java:14)
at com.report.test.Combine.runReport(Combine.java:33)
at com.report.test.Combine.main(Combine.java:74)
java.lang.NullPointerException
at com.report.test.Combine.runReport(Combine.java:40)
at com.report.test.Combine.main(Combine.java:74)


If my code is perfect. Please tell me in detail what jars should be copied to my workspace lib from birt-runtime.