Bug 201205 Exception occurs in dataset preview when IN filter contains a blank value[0802]
Description: Exception occurs in dataset preview when IN filter contains a blank value[0802] Build number: 2.2.1.v20070827-0630 Steps to reproduce: 1, New a sampleDB customer dataset 2, New a filter and operator is IN 3, Specify a blank value and add 4, Preview in dataset Expected result: The preview should be successful and no exception Actual result: Exception occurs Error log: org.eclipse.birt.report.designer.core.runtime.GUIException: Caused by java.lang.reflect.InvocationTargetException. at org.eclipse.birt.report.designer.core.runtime.GUIException.createGUIException(GUIException.java:76) at org.eclipse.birt.report.designer.internal.ui.util.ExceptionHandler.handle(ExceptionHandler.java:169) at org.eclipse.birt.report.designer.internal.ui.util.ExceptionHandler.handle(ExceptionHandler.java:150) at org.eclipse.birt.report.designer.internal.ui.util.ExceptionHandler.handle(ExceptionHandler.java:89) at org.eclipse.birt.report.designer.data.ui.dataset.ResultSetPreviewPage.updateResultsProcess(ResultSetPreviewPage.java:515) at org.eclipse.birt.report.designer.data.ui.dataset.ResultSetPreviewPage.runUpdateResults(ResultSetPreviewPage.java:274) at org.eclipse.birt.report.designer.data.ui.dataset.ResultSetPreviewPage.access$1(ResultSetPreviewPage.java:244) at org.eclipse.birt.report.designer.data.ui.dataset.ResultSetPreviewPage$4.runInUIThread(ResultSetPreviewPage.java:237)
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/script/ScriptEvalUtil.java
* Evaluates a ROM script and converts the result type into one accepted by
	 * BIRT: Double (for all numeric types), java.util.Date, String, Boolean.
	 * Converts Javascript exception and script runtime exceptions to
	 * DataException
	 * 
	 * @param cx
	 * @param scope
	 * @param scriptText
	 * @param source
	 * @param lineNo
	 * @return
	 * @throws DataException
	 */
	public static Object evaluateJSAsExpr(Context cx, Scriptable scope,
			String scriptText, String source, int lineNo)
			throws DataException 
	{
		if ( logger.isLoggable( Level.FINER ) )
			logger.entering( ScriptEvalUtil.class.getName( ),
				"evaluateJSExpr",
				"evaluateJSExpr() scriptText=" + scriptText 
				+ ", source=" + source 
				+ ", lineNo=" + lineNo);
		
		Object result;
		try
		{
			result = JavascriptEvalUtil.evaluateScript( cx, scope, scriptText, source, lineNo );
		}
		catch (BirtException e)