Bug 136973 Refresh problem-column name in chart builder
Description: Use flat file datasource, if change the column name in flat file, the column name will changed in data explorer but not refreshed in chart builder accordingly. Only restart Eclipse will get the correct information.
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/impl/QueryExecutionHelper.java
List filters = convertFilters( filterIt );
		if ( filters != null )
			queryDefn.getFilters( ).addAll( filters );
	}
	/**
	 * 
	 * @param filterIt
	 * @return
	 */
	private List convertFilters( Iterator filterIt )
	{
		if ( filterIt == null )
			return null;
		List filters = new ArrayList( );
		while ( filterIt.hasNext( ) )
		{
			while ( filterIt.hasNext( ) )
			{
				IFilterDefinition filter = this.modelAdaptor.adaptFilter( (FilterConditionHandle) filterIt.next( ) );
				filters.add( filter );
			}
		}
		return filters;
	}
	/**
	 * 
	 * @param paramBindingIt
	 * @return
	 */
	private List convertParamterBindings( Iterator paramBindingIt )