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/api/DataEngineContext.java
*/
	public final static int CACHE_USE_DISABLE = 2;
	
	/**
	 * Always use cached data if available, disregard data set cache setting and
	 * AppContext. cachRowCount parameter decides cache count.
	 */
	public final static int CACHE_USE_ALWAYS = 3;
	
	
	private int mode;
	private Scriptable scope;	
	private IDocArchiveReader reader;
	private IDocArchiveWriter writer;
	private ULocale currentLocale;
	
	
	private int cacheOption;
	private int cacheCount;
	
	
	public final static int VERSION_INFO_STREAM = 11;
	
	public final static int DATASET_DATA_STREAM = 21;
	public final static int DATASET_META_STREAM = 22;
	
	public final static int EXPR_VALUE_STREAM = 31;
	public final static int EXPR_META_STREAM = 32;
	public final static int EXPR_ROWLEN_STREAM = 33;