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Contents
module ActiveFedora
class FilePathBuilder
# Builds a relative path for a file
def self.build(digital_object, name, prefix)
name = nil if name == ''
prefix ||= 'DS'
name || generate_dsid(digital_object, prefix)
end
# return a valid dsid that is not currently in use. Uses a prefix (default "DS") and an auto-incrementing integer
# Example: if there are already datastreams with IDs DS1 and DS2, this method will return DS3. If you specify FOO as the prefix, it will return FOO1.
def self.generate_dsid(digital_object, prefix)
return unless digital_object
matches = digital_object.attached_files.keys.map {|d| data = /^#{prefix}(\d+)$/.match(d); data && data[1].to_i}.compact
val = matches.empty? ? 1 : matches.max + 1
format_dsid(prefix, val)
end
### Provided so that an application can override how generated ids are formatted (e.g DS01 instead of DS1)
def self.format_dsid(prefix, suffix)
sprintf("%s%i", prefix,suffix)
end
end
end
Version data entries
33 entries across 33 versions & 1 rubygems