Bug 147977 Chart editor does not use container's column bindings
1) create data source 2) create data set: select * from customers 3) create table 4) bind country, customer name to table 5) group by country 6) create a binding for total_by_country which aggregates # of customers in each country. put a data element in group footer and bind to total_by_country 7) in group header put chart 8) in data tab specify inherit from container Result: You see columns for report data set created in step 2. Expected Result: Just 3 columns for the 3 bindings created in 4 and 6.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedQuery.java
PreparedSubquery subquery = (PreparedSubquery) subQueryMap.get( subQueryName );
		if ( subquery == null )
		{
			DataException e = new DataException( ResourceConstants.SUBQUERY_NOT_FOUND,
					subQueryName );
			logger.logp( Level.FINE,
					PreparedQuery.class.getName( ),
					"execSubquery",
					"Subquery name not found",
					e );
			throw e;
		}
		return subquery.execute( iterator, subScope );
	}
	
	/**
	 * Closes the prepared query. This instance can no longer be executed after
	 * it is closed 
	 * 
	 * TODO: expose this method in the IPreparedQuery interface
	 */
	void close( )
	{
		this.baseQueryDefn = null;
		this.aggrTable = null;
		this.subQueryMap = null;
		
		logger.logp( Level.FINER,
				PreparedQuery.class.getName( ),
				"close",