QueryResults( DataEngineContext context, String queryResultID, IResultMetaData resultMetaData, String subQueryName, int currParentIndex )
public QueryResults( DataEngineContext context, String queryResultID )
	QueryResults( DataEngineContext context, String queryResultID,			IResultMetaData resultMetaData, String subQueryName,			int currParentIndex )	{		assert context != null;		assert queryResultID != null;		if ( subQueryName != null )			assert resultMetaData != null;				this.context = context;		this.queryResultID = queryResultID;				this.resultMetaData = resultMetaData;		this.subQueryName = subQueryName;		this.currParentIndex = currParentIndex;	}