| ITopicMap | ||
|---|---|---|
 | ITopicMapObject And Its Derived Interfaces |  |
| NetworkedPlanet | TMCore Engine API Guide |
| ITopicMap | ||
|---|---|---|
| | ITopicMapObject And Its Derived Interfaces | |
The ITopicMap interface provides
access to the basic properties of a topic map, including the topics
and associations that it contains and the indexes it provides. This
interface also defines a number of special methods.
The Topics and Associations properties are read-only properties which yield a read-only list of all topics or associations in the topic map.
The properties with names that end "...Index" provide direct access to the object indexes maintained by TMCore for the topic map. These indexes allow lookup of objects in the topic map by a variety of different properties of those objects. The indexes are covered in greater detail in the section called “The Core Indexes”.
The method
ITopicMap.MergeIn(ITopicMap) can be used to
merge one ITopicMap instance into
another. The ITopicMap on which the
method is invoked will be modified, gaining copies of all of the
topics and associations of the other
ITopicMap (with any merging required
also performed). The other ITopicMap
will not be modified in anyway by this method.
Every object in a TMCore database has a unique integer
identifier. The identifier is persistent across multiple sessions
and is only removed from the database as the result of a Remove()
method call or topic merging. The
ITopicMap interface provides two
convenience methods GetTopicByID(int id)
and GetAssociationByID(int id) to retrieve
ITopic and
IAssociation instances directly by
this database ID.
| |  | |
| ITopicMapObject |  | Mapping TMCore Interfaces And Properties to XTM Elements And Attribute |