Last update:
Apr 1, 2000
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StorageHelpers: A Format Independent Storage Specification
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Chirstopher Jones,
Daniel Riley,
Martin Lohner
Cornell University
Presented by:
Christopher Jones
The CLEO III data access system is designed to be input/output data
format independent. This allows us to use the most appropriate storage
technology for each type of data and for each use of the system
(i.e. reconstruction versus analysis). But if we have N storage formats
and M data items to store, we potentially have to deal with N*M storage
specifications. To avoid this problem, we developed StorageHelpers
which are C++ classes that encapsulate the schema and compression
information of an object you wish to store. StorageHelpers allow us to
efficiently store objects for any format without any modifications to
the class being stored. We have tried to make it easy for a user to
write a StorageHelper by using the standard C++ iostream notation and by
creating a C++ header file parser which will write most of the StorageHelper
code automatically. Using a StorageHelper is also easy, all the user has to
do is link with the library that contains the object they want to read or
write.
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