FdoIScrollableFeatureReader Class Reference

The FdoIScrollableFeatureReader interface provides a read-only iterator for reading feature data. Reading can be done in forward, reverse or random order. A reference to an FdoIScrollableFeatureReader is returned from the ExtendedSelect command. Because the initial position of the FdoIScrollableFeatureReader is prior to the first item, you must call one of the Read functions to begin accessing any data. More...

#include <IScrollableFeatureReader.h>

Inherits FdoIFeatureReader.

List of all members.


Public Member Functions

virtual FdoInt32 Count ()=0
 Returns the number of records of the query result.
virtual unsigned int IndexOf (FdoPropertyValueCollection *key)=0
 Given a key of a feature, IndexOf will return the one based index or the record number of the feature within the returned query result.
virtual FdoBoolean ReadAt (FdoPropertyValueCollection *key)=0
 Provides the ad-hoc access to the query result.
virtual FdoBoolean ReadAtIndex (unsigned int recordindex)=0
 Provides an ad-hoc access to the query result.
virtual FdoBoolean ReadFirst ()=0
 Positions the reader at the first record of the query result.
virtual FdoBoolean ReadLast ()=0
 Position the reader at the last record of the query result.
virtual FdoBoolean ReadPrevious ()=0
 Advances the reader to the previous item.

Detailed Description

The FdoIScrollableFeatureReader interface provides a read-only iterator for reading feature data. Reading can be done in forward, reverse or random order. A reference to an FdoIScrollableFeatureReader is returned from the ExtendedSelect command. Because the initial position of the FdoIScrollableFeatureReader is prior to the first item, you must call one of the Read functions to begin accessing any data.

Definition at line 37 of file IScrollableFeatureReader.h.


The documentation for this class was generated from the following file: