diff -r 43e37759235e -r 51a74ef9ed63 Symbian3/SDK/Source/GUID-053FFF2B-6FB1-5065-B9D1-047477F3DE01.dita --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Symbian3/SDK/Source/GUID-053FFF2B-6FB1-5065-B9D1-047477F3DE01.dita Wed Mar 31 11:11:55 2010 +0100 @@ -0,0 +1,38 @@ + + + + + +Introduction +to dictionary storesA dictionary store is a store where all streams are accessed through +a UID, rather than directly by stream ID. +

A dictionary store contains streams in the usual way but, in addition, +the root stream is a stream dictionary. That is, the external representation +of a CStreamDictionary object is a list of two-way associations +between UIDs and stream ids.

+

The following diagram illustrates the concept of the dictionary store.

+ +Dictionary store + + +

The interface to a dictionary store is provided by the CDictionaryStore abstract +class. The classes for concrete dictionary stores are derived from this abstract +class; for example, CDictionaryFileStore is a concrete dictionary +store class which is implemented using a file store.

+

Note that a dictionary store does not derive from CStreamStore, +but owns a persistent store, a CPersistentStore type, and +a stream dictionary, a CStreamDictionary type, as part of +its implementation.

+

See also

+

File based dictionary +store

+

Stream dictionaries

+

Stream ID

+

UID manipulation

+
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