Bug 159380 [regression]Not find DataEngineContextExt class cause all engine/dte smoke testing fail
Description Not find DataEngineContextExt class cause all engine/dte smoke testing fail Steps to reproduce: Run Engine/DTE smoke testing framework Expected result&#65306; Outputs are correct. Actaul result: All outputs are 0kb with Exception: Error happened while running the report. java.lang.NoClassDefFoundError: org/eclipse/birt/data/engine/impl/DataEngineContextExt at org.eclipse.birt.data.engine.api.DataEngineContext.setTmpdir(DataEngineContext.java:374) at org.eclipse.birt.report.engine.data.dte.DteDataEngine.<init>(DteDataEngine.java:71) at org.eclipse.birt.report.engine.data.DataEngineFactory.createDataEngine(DataEngineFactory.java:94) at org.eclipse.birt.report.engine.executor.ExecutionContext.getDataEngine(ExecutionContext.java:694) at org.eclipse.birt.report.engine.executor.ReportExecutor.execute(ReportExecutor.java:99) at org.eclipse.birt.report.engine.internal.executor.l18n.LocalizedReportExecutor.execute(LocalizedReportExecutor.java:38) at org.eclipse.birt.report.engine.layout.html.HTMLReportLayoutEngine.layout(HTMLReportLayoutEngine.java:68) at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.run(RunAndRenderTask.java:207) at org.eclipse.birt.report.engine.api.ReportRunner.runAndRenderReport(ReportRunner.java:237) at org.eclipse.birt.report.engine.api.ReportRunner.execute(ReportRunner.java:162) at org.eclipse.birt.report.engine.api.ReportRunner.main(ReportRunner.java:118)
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/DataEngineImpl.java
Object existingDefn = dataSources.get( dataSource.getName( ) );
		if ( existingDefn != null )
			this.dataSourceManager.addDataSource( (DataSourceRuntime) existingDefn );
		
		
		
		DataSourceRuntime newDefn = DataSourceRuntime.newInstance( dataSource,
				this );
		dataSources.put( newDefn.getName( ), newDefn );
		
		logger.exiting( DataEngineImpl.class.getName( ), "defineDataSource" );
	}
	/**
	 * Provides the definition of a data set to Data Engine. A data set must be
	 * defined using this method prior to preparing any report query that uses such data set.
	 * <br>
	 * Data sets are uniquely identified name. If specified data set has already
	 * been defined, its definition will be updated with the content of the provided DataSetDesign
	 */
	public void defineDataSet( IBaseDataSetDesign dataSet )
			throws DataException
	{
		logger.entering( DataEngineImpl.class.getName( ),
				"defineDataSet",
				dataSet == null ? null : dataSet.getName( ) );
		if ( dataSet == null )
		{
			NullPointerException e = new NullPointerException( "dataSource param cannot be null" );
			logger.logp( Level.WARNING,
					DataEngineImpl.class.getName( ),