A Dynamic Schema Interface
In addition to providing classes to parse from and write to topic
maps, the NPCL API also provides an implementation of the
ISchema interface that is directly
connected to the database. All type, constraint and property retrievals
are implemented as database queries and all modifications made to types
or constraints are committed to the database when they are made. The
class that provides this implementation is the class
NetworkedPlanet.Npcl.TopicMapSchema. The class is
created by passing in the ITopicMap
instance that it will work against as the single constructor parameter.
This class implements the ISchema
interface and can be used in the same way as an ISchema instance
returned by the TopicMapSchemaReader or
XmlSchemaReader classes.
Note
This implementation is designed for developers who want to
create their own GUI tools for manipulating schemas stored in a TMCore
database. You should NOT use this implementation for most applications
- the TopicMapSchemaReader is optimised to read
a schema from a database into memory in large batches and is usually
more efficient than the TopicMapSchema
implementation for applications that need to lookup schema information
and/or traverse the schema.
