Bug 135778 There is an error when the data item has no binding data set
Data item can have no binding data set, if it happens, it indicates it only use the basic Java Script function such as new Date(). At this moment, the data of data item is not stored in report document by DtE, which only supports these data items which has binding data set.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/executor/transform/CachedResultSet.java
{
	private ResultSetPopulator resultSetPopulator;
	/**
	 * Constructs and intializes OdiResultSet based on data in a ODA result set
	 */
	public CachedResultSet( BaseQuery query, IResultClass meta,
			ResultSet odaResultSet, IEventHandler eventHandler )
			throws DataException
	{
		this.resultSetPopulator = new ResultSetPopulator( query,
				meta,
				this,
				eventHandler );
		resultSetPopulator.populateResultSet( new OdiResultSetWrapper( odaResultSet) );
	}
	/**
	 * Constructs and intializes OdiResultSet based on data in an IJointDataSetPopulator
	 */
	public CachedResultSet( BaseQuery query, IResultClass meta,
			IDataSetPopulator odaResultSet, IEventHandler eventHandler )
			throws DataException
	{