Difference between revisions of "Persistence code samples"
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Revision as of 01:08, 19 August 2007
Here the main classes of the framework are sketched.
You can download the source code here (TODO: provide a link to the sources)
Contents
Simplified BON diagram
PERSISTENCE_MANAGER
class PERSISTENCE_MANAGER feature -- Access medium: PERSISTENCE_MEDIUM -- the chosen medium format: PERSISTENCE_FORMAT -- the chosen format feature -- Basic operations store (an_object:ANY) -- persists an_object using the format and medium stored by current object require an_object_exists:an_object /= Void medium_exists: medium /= Void do format.store(an_object,medium) end retrieve:ANY -- retrieves an_object using the medium and format stored by current object require medium_exists: medium /= Void do Result:=format.retrieve(medium) end end
SERIALIZATION_MANAGER
PERSISTENCE_FORMAT
BINARY_FORMAT
INDEPENDENT_BINARY_FORMAT
class INDEPENDENT_BINARY_FORMAT inherit BINARY_FORMAT feature -- Access optimized_for_retrieval:BOOLEAN feature -- Status setting set_optimized_for_retrieval(is_optimized_for_retrieval:BOOLEAN) do optimized_for_retrieval:=is_optimized_for_retrieval ensure optimized_for_retrieval_set:optimized_for_retrieval=is_optimized_for_retrieval end feature -- Basic operations store_now(object_to_store:ANY) do store_handler.independent_store(object_to_store,serializer,optimized_for_retrieval) end end