Bug 200133 Chart can not share the column binding from table item[00]
Description: Chart can not share the column binding from table item[00] Step: 1. New a datasource and dataset 2. New a table named table1 and binding the dataset 3. New a chart and binding the sharing result set on table1 Actual result: The data columns have been not share on the chart Exceptioon result: The data column binding will share on the chart
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java
return names;
	}
	public final String[] getPreviewHeader( ) throws ChartException
	{
		Iterator iterator = ReportItemUIUtil.getColumnDataBindings( itemHandle );
		ArrayList list = new ArrayList( );
		while ( iterator.hasNext( ) )
		{
			list.add( ( (ComputedColumnHandle) iterator.next( ) ).getName( ) );
		}
		return (String[]) list.toArray( new String[list.size( )] );
	}
	public final List getPreviewData( ) throws ChartException
	{
		return getPreviewRowData( getPreviewHeader( true ), -1, true );
	}
	private String[] getPreviewHeader( boolean isExpression )
			throws ChartException
	{
		String[] exps = getPreviewHeader( );
		if ( isExpression )
		{
			for ( int i = 0; i < exps.length; i++ )
			{
				exps[i] = ChartUIUtil.getExpressionString( exps[i] );
			}
		}
		return exps;
	}
	protected final List getPreviewRowData( String[] columnExpression,