Module: Moab

Defined in:

lib/moab.rb,
lib/moab/bagger.rb,
lib/moab/config.rb,
lib/moab/utc_time.rb,
lib/moab/exceptions.rb,
lib/moab/file_group.rb,
lib/moab/file_instance.rb,
lib/moab/file_inventory.rb,
lib/moab/file_signature.rb,
lib/moab/storage_object.rb,
lib/moab/storage_services.rb,
lib/moab/version_metadata.rb,
lib/moab/signature_catalog.rb,
lib/moab/file_manifestation.rb,
lib/moab/storage_repository.rb,
lib/moab/verification_result.rb,
lib/moab/deposit_bag_validator.rb,
lib/moab/file_group_difference.rb,
lib/moab/storage_object_version.rb,
lib/moab/version_metadata_entry.rb,
lib/moab/version_metadata_event.rb,
lib/moab/signature_catalog_entry.rb,
lib/moab/file_instance_difference.rb,
lib/moab/storage_object_validator.rb,
lib/moab/file_inventory_difference.rb,
lib/moab/file_group_difference_subset.rb

Overview

Note:

Copyright © 2012 by The Board of Trustees of the Leland Stanford Junior University. All rights reserved. See LICENSE for details.

Moab is a module that provides a distintive namespace for the collection of classes it contains.

Data Model

• FileInventory = container for recording information about a collection of related files

  • FileGroup [1..*] = subset allow segregation of content and metadata files

    • FileManifestation [1..*] = snapshot of a file’s filesystem characteristics

      • FileSignature [1] = file fixity information

      • FileInstance [1..*] = filepath and timestamp of any physical file having that signature

• SignatureCatalog = lookup table containing a cumulative collection of all files ever ingested

  • SignatureCatalogEntry [1..*] = an row in the lookup table containing storage information about a single file

    • FileSignature [1] = file fixity information

• FileInventoryDifference = compares two FileInventory instances based on file signatures and pathnames

  • FileGroupDifference [1..*] = performs analysis and reports differences between two matching FileGroup objects

    • FileGroupDifferenceSubset [1..5] = collects a set of file-level differences of a give change type

      • FileInstanceDifference [1..*] = contains difference information at the file level

        • FileSignature [1..2] = contains the file signature(s) of two file instances being compared

• VersionMetadata = descriptive information about a digital object’s versions

  • VersionMetadataEntry [1..*] = attributes of a digital object version

    • VersionMetadataEvent [1..*] = object version lifecycle events with timestamps

• StorageObject = represents a digital object’s repository storage location and ingest/dissemination methods

  • StorageObjectVersion [1..*] = represents a version subdirectory within an object’s home directory

    • Bagger [1] = utility for creating bagit packages for ingest or dissemination

Defined Under Namespace

Classes: Bagger, DepositBagValidator, FileGroup, FileGroupDifference, FileGroupDifferenceSubset, FileInstance, FileInstanceDifference, FileInventory, FileInventoryDifference, FileManifestation, FileNotFoundException, FileSignature, InvalidMetadataException, ObjectNotFoundException, SignatureCatalog, SignatureCatalogEntry, StorageObject, StorageObjectValidator, StorageObjectVersion, StorageRepository, StorageServices, UtcTime, ValidationException, VerificationResult, VersionMetadata, VersionMetadataEntry, VersionMetadataEvent

Constant Summary

DEFAULT_CHECKSUM_TYPES =

%i[md5 sha1 sha256].freeze

Config =

Returns the configuration data.

Returns:

• (Confstruct::Configuration) —

  the configuration data

Confstruct::Configuration.new do
  storage_roots nil
  storage_trunk nil
  deposit_trunk nil
  path_method :druid_tree
  checksum_algos [:md5, :sha1, :sha256]
end