Bug 136522 [Regression]DateTime parameter can't be drag to the layout
Steps to reproduce: 1.New a date time parameter 2.Drag it to the layout Actual result: A BIRT exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Model Plug-in ID:org.eclipse.birt.report.model Version:2.1.0.N20060412-2230 Error Code:Error.PropertyValueException.CHOICE_NOT_FOUND Error Message:The choice value "dateTime" is not found.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dnd/InsertInLayoutUtil.java
}
	/**
	 * Validates drop target from data set column in data view.
	 * 
	 * @return validate result
	 */
	protected static boolean handleValidateDataSetColumn(
			ResultSetColumnHandle insertObj, EditPart target )
	{
		if ( handleValidateDataSetColumnDropContainer( target )
				&& DNDUtil.handleValidateTargetCanContainType( target.getModel( ),
						ReportDesignConstants.DATA_ITEM ) )
		{
			
			if ( target.getModel( ) instanceof ModuleHandle )
			{
				return true;
			}
			
			DesignElementHandle handle = (DesignElementHandle) target.getParent( )
					.getModel( );
			if ( handle instanceof ReportItemHandle
					&& ( (ReportItemHandle) handle ).getDataSet( ) == null )
			{
				return true;
			}
			return DEUtil.getDataSetList( handle )
					.contains( insertObj.getElementHandle( ) );
		}
		return false;