Bug 135497 Data Type is not correct when "Generate All" for Data item
Description: Create a sample datasource and dataset. Insert a data into layout, bind with the dataset.Click "Generate All" to get the Data Binding columns, but the displayed data type is not consistent with the actual one.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/palette/BasePaletteFactory.java
{
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.birt.designer.internal.ui.editors.schematic.tools.IToolHandleExtends#preHandleMouseDown()
		 */
		public boolean preHandleMouseUp( )
		{
			ModuleHandle reportDesignHandle = SessionHandleAdapter.getInstance( )
					.getReportDesignHandle( );
			
			DesignElementFactory factory = DesignElementFactory.getInstance( reportDesignHandle );
			String type = (String) getRequest( ).getNewObjectType( );
			GridHandle grid = null;
			if ( IReportElementConstants.AUTOTEXT_AUTHOR_PAGE_DATE.equals( type ) )
			{
				grid = factory.newGridItem( null, 3, 1 );
				try
				{
					List cellList = ( (RowHandle) grid.getRows( ).get( 0 ) ).getCells( )
							.getContents( );
					TextItemHandle textHandle = factory.newTextItem( null );
					String text = AUTOTEXT_LABEL_CREATE_BY;
					if ( reportDesignHandle.getAuthor( ) != null )
					{
						text += reportDesignHandle.getAuthor( );
					}
					textHandle.setContent( text );
					( (CellHandle) cellList.get( 0 ) ).getContent( )
							.add( textHandle );