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Contents
module RGen
module Fragment
# Caches model fragments in Ruby dump files.
#
# Dump files are created per each fragment file.
#
# The main goal is to support fast loading and joining of fragments. Therefore the cache
# stores additional information which makes the joining process faster (adding to
# environment, resolving references)
#
class DumpFileCache
# +cache_map+ must be an object responding to +load_data+ and +store_data+
# for loading or storing data associated with a file;
# this can be an instance of Util::FileCacheMap
def initialize(cache_map)
@cache_map = cache_map
end
# Note that the fragment must not be connected to other fragments by resolved references
# unresolve the fragment if necessary
def store(fragment)
fref = fragment.fragment_ref
# temporarily remove the reference to the fragment to avoid dumping the fragment
fref.fragment = nil
@cache_map.store_data(fragment.location,
Marshal.dump({
:root_elements => fragment.root_elements,
:elements => fragment.elements,
:index => fragment.index,
:unresolved_refs => fragment.unresolved_refs,
:fragment_ref => fref,
:data => fragment.data
}))
fref.fragment = fragment
end
def load(fragment)
dump = @cache_map.load_data(fragment.location)
return :invalid if dump == :invalid
header = Marshal.load(dump)
fragment.set_root_elements(header[:root_elements],
:elements => header[:elements],
:index => header[:index],
:unresolved_refs => header[:unresolved_refs])
fragment.data = header[:data]
if header[:fragment_ref]
fragment.fragment_ref = header[:fragment_ref]
fragment.fragment_ref.fragment = fragment
else
raise "no fragment_ref in fragment loaded from cache"
end
end
end
end
end
Version data entries
227 entries across 227 versions & 3 rubygems