Bug 200755 [smoke]Fail to preview Crosstab after deploy BIRT in application servers.[0601][1102]
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/api/DataRequestSession.java
*            An iterator of ParamBindingHandle objects that defines
	 *            bindings for the data set's input parameters
	 * @param columnBindings
	 *            An iterator of ComputedColumnHandle objects that define all
	 *            column binding expressions
	 * @param boundColumnName
	 *            Name of the bound column to retrieve values for
	 * @param requestInfo
	 *            Information on result set retrieving(like start index,return
	 *            row number...)
	 * @return
	 * @throws BirtException
	 */
	public abstract Collection getColumnValueSet( DataSetHandle dataSet,
			Iterator inputParamBindings, Iterator columnBindings,
			String boundColumnName, IRequestInfo requestInfo )
			throws BirtException;
	
	/**
	 * Use a default data engine to execute a query. Since Data Engine needs to
	 * know the data source and data set definition, the moduleHandle needs to
	 * be passed to let DtE get these necessary information.
	 * 
	 * @param queryDefn
	 * @param paramBindingIt
	 * @param filterIt
	 * @param bindingIt
	 * @return query results of specified query definition
	 * @exception BirtException
	 *                any error in execute query to get the query results