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.examples/src/org/eclipse/birt/chart/examples/builder/DefaultDataServiceProviderImpl.java
* @see org.eclipse.birt.chart.ui.interfaces.IDataServiceProvider#getCurrentDataSet()
	 */
	public String getBoundDataSet( )
	{
		
		return sDataSetName;
	}
	public String getReportDataSet( )
	{
		return null;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.ui.interfaces.IDataServiceProvider#getPreviewHeader(java.lang.String)
	 */
	public String[] getPreviewHeader( )
	{
		String[] columns = new String[COLUMN_COUNT];
		for ( int i = 0; i < columns.length; i++ )
		{
			columns[i] = "DB Col " + ( i + 1 ); 
		}
		return columns;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.ui.interfaces.IDataServiceProvider#getPreviewData(java.lang.String)
	 */