Bug 120036 Preview of XML attributes is not working
The XML attribute values are not working in the current BIRT XML ODA driver. Only 'text'-type XML elements' values are displayable in Preview. ColumnMapping XPath expressions like "@attributeName" are broken in Preview. I'll attach document showing the problem and sample XML/XSD data
data/org.eclipse.birt.report.data.oda.xml/src/org/eclipse/birt/report/data/oda/xml/util/RelationInformation.java
/**
	 * Add a filter to a table.
	 * 
	 * @param columnName
	 * @param value
	 */
	public void addFilter( String columnName, String value )
	{
		this.filterInfos.put( columnName, value );
	}
	/**
	 * Return the column name array.
	 * 
	 * @return
	 */
	public String[] getColumnNames( )
	{
		Object[] names = this.columnInfos.keySet( ).toArray( );
		String[] result = new String[names.length];
		for ( int i = 0; i < names.length; i++ )
		{
			result[( (ColumnInfo) columnInfos.get( names[i] ) ).getColumnIndex( ) - 1] = names[i].toString( );
		}
		return result;
	}
	/**
	 * The nested xml columnNames are the names of columns the value of which may be shared by multiple 
	 * columns. The most significant feature of a nested xml column is that its xpath expression start will 
	 * table ancestor path rather than table root path.  
	 *