Class: Valkyrie::Persistence::Fedora::PermissiveSchema

Inherits:
Object
  • Object
show all
Defined in:
lib/valkyrie/persistence/fedora/permissive_schema.rb

Overview

Default schema for Fedora MetadataAdapter. It’s used to generate a mapping of Resource attributes to predicates. This implementation will make up a URI if one doesn’t exist in a passed in schema.

Examples:

Passing in a mapping

schema = Valkyrie::Persistence::Fedora::PermissiveSchema.new(member_ids:
  RDF::URI("http://mypredicates.com/member_ids"))
schema.predicate_for(resource: Resource.new, property: :member_ids) # => RDF::URI<"http://mypredicates.com/member_ids">
schema.predicate_for(resource: Resource.new, property: :unknown) # => RDF::URI<"http://example.com/predicate/unknown">

Constant Summary collapse

URI_PREFIX = 
'http://example.com/predicate/'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(schema = {}) ⇒ PermissiveSchema

Returns a new instance of PermissiveSchema.



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 58

def initialize(schema = {})
  @schema = schema
end

Instance Attribute Details

#schema ⇒ Object (readonly)

Returns the value of attribute schema.



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 57

def schema
  @schema
end

Class Method Details

.id ⇒ RDF::URI

Returns:



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 21

def self.id
  uri_for(:id)
end

.member_ids ⇒ RDF::URI

Returns:



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 26

def self.member_ids
  uri_for(:member_ids)
end

.uri_for(property) ⇒ RDF::URI

Cast the property to a URI in the namespace

Parameters:

  • property (Symbol)

Returns:



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 53

def self.uri_for(property)
  RDF::URI("#{URI_PREFIX}#{property}")
end

.valkyrie_bool ⇒ RDF::URI

Returns:



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 31

def self.valkyrie_bool
  uri_for(:valkyrie_bool)
end

.valkyrie_datetime ⇒ RDF::URI

Returns:



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 36

def self.valkyrie_datetime
  uri_for(:valkyrie_datetime)
end

.valkyrie_id ⇒ RDF::URI

Returns:



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 16

def self.valkyrie_id
  uri_for('valkyrie_id')
end

.valkyrie_int ⇒ RDF::URI

Returns:



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 41

def self.valkyrie_int
  uri_for(:valkyrie_int)
end

.valkyrie_time ⇒ RDF::URI

Returns:



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 46

def self.valkyrie_time
  uri_for(:valkyrie_time)
end

Instance Method Details

#predicate_for(resource:, property:) ⇒ Object 



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 62

def predicate_for(resource:, property:)
  schema.fetch(property) { self.class.uri_for(property) }
end

#property_for(resource:, predicate:) ⇒ Object

Find the property in the schema. If it’s not there check to see if this prediate is in the URI_PREFIX namespace, return the suffix as the property @example:

property_for(resource: nil, predicate: "http://example.com/predicate/internal_resource")
#=> 'internal_resource'



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# File 'lib/valkyrie/persistence/fedora/permissive_schema.rb', line 71

def property_for(resource:, predicate:)
  (schema.find { |_k, v| v == RDF::URI(predicate.to_s) } || []).first || predicate.to_s.gsub(URI_PREFIX, '')
end