Feature Iterators

Feature iterators are objects used to read cartographic objects. The IlvMapFeatureIterator abstract class allows you to read cartographic data in a uniform way whatever its origin (file, database, map server, and so on).

All the predefined readers supplied with Views Maps implement this interface. They can be found in the package format. For a detailed description of these readers, see Predefined Readers.

This section covers the following topics:

• Overview of IlvMapFeatureIterator presents the class and its main methods.

• Writing a New Reader shows how to write a reader for cartographic files of a specific format using an example. Through this example, you will see a basic implementation of a feature iterator that uses most of the methods that the interface provides.