Bug 410905 ISODate to DateTime
data/org.eclipse.birt.data.oda.mongodb/src/org/eclipse/birt/data/oda/mongodb/impl/MDbResultSet.java
{
            m_mongoCursor.close();
            m_mongoCursor = null;
        }
	}
	/*
	 * @see org.eclipse.datatools.connectivity.oda.IResultSet#getRow()
	 */
	public int getRow() throws OdaException
	{
		return m_currentRowId;
	}
	/*
	 * @see org.eclipse.datatools.connectivity.oda.IResultSet#getString(int)
	 */
	public String getString( int index ) throws OdaException
	{
        return getString( findFieldName(index) );
	}
	/*
	 * @see org.eclipse.datatools.connectivity.oda.IResultSet#getString(java.lang.String)
	 */
	public String getString( String columnName ) throws OdaException
	{
	    Object columnValue = getFieldValue( columnName );
	    if( columnValue instanceof String )
	        return (String)columnValue;
        if( columnValue instanceof List && ! (columnValue instanceof BasicDBList) )
        {