Iterators

• Iterators are the mechanism by which SEDRIS objects are retrieved.

• Provide sequential access to the set of object with satisfy search filter and search boundary criteria.

• There are three classes of iterators matching the three types of relationships between objects:

  • Aggregate Iterators
  • Associate Iterators
  • Component Iterators

• Associate and Aggregate Iterators are limited to object that are one “hop” from the “start object”.

• Component Iterators search the entire sub-hierarchy rooted at the start object, unless limited by the search filter.

• Iterators are “traversed” using the function SE_GetNextObject

• Iterators may be combined to provide multiple strategies for accessing SEDRIS objects

extern SE_STATUS_CODE_ENUM SE_GetNextObject

(

SE_ITERATOR iterator,

SE_OBJECT *next_object_out_ptr,

SE_OBJECT *association_class_object_out_ptr

);

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