Class: GeoCombine::Geoblacklight

Inherits:
Object
  • Object
show all
Includes:
Formats, GeometryTypes, Subjects
Defined in:
lib/geo_combine/geoblacklight.rb

Constant Summary collapse

GEOBLACKLIGHT_VERSION = 
'v1.1.0'
SCHEMA_JSON_URL = 
"https://raw.githubusercontent.com/geoblacklight/geoblacklight/#{GEOBLACKLIGHT_VERSION}/schema/geoblacklight-schema.json".freeze
DEPRECATED_KEYS_V1 = 
%w[
  uuid
  georss_polygon_s
  georss_point_s
  georss_box_s
  dc_relation_sm
  solr_issued_i
  solr_bbox
].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from GeometryTypes

#geometry_types

Methods included from Subjects

#subjects

Methods included from Formats

#formats

Constructor Details

#initialize(metadata, fields = {}) ⇒ Geoblacklight

Initializes a GeoBlacklight object GeoBlacklight-Schema

Parameters:

  • metadata (String) —

    be a valid JSON string document in

  • fields (Hash) (defaults to: {}) —

    enhancements to metadata that are merged with @metadata



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# File 'lib/geo_combine/geoblacklight.rb', line 30

def initialize(metadata, fields = {})
  @metadata = JSON.parse(metadata).merge(fields)
  @schema = nil
end

Instance Attribute Details

#metadata ⇒ Object (readonly)

Returns the value of attribute metadata.



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# File 'lib/geo_combine/geoblacklight.rb', line 11

def metadata
  @metadata
end

Instance Method Details

#dct_references_validate! ⇒ Boolean

Validate dct_references_s

Returns:

  • (Boolean) 


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# File 'lib/geo_combine/geoblacklight.rb', line 70

def dct_references_validate!
  return true unless metadata.key?('dct_references_s') # TODO: shouldn't we require this field?
  begin
    ref = JSON.parse(metadata['dct_references_s'])
    raise GeoCombine::Exceptions::InvalidDCTReferences, 'dct_references must be parsed to a Hash' unless ref.is_a?(Hash)
    true
  rescue JSON::ParserError => e
    raise e, "Invalid JSON in dct_references_s: #{e.message}"
  end
end

#enhance_metadata ⇒ Object

Calls metadata enhancement methods for each key, value pair in the metadata hash



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# File 'lib/geo_combine/geoblacklight.rb', line 38

def enhance_metadata
  upgrade_to_v1 if metadata['geoblacklight_version'].blank?

  metadata.each do |key, value|
    translate_formats(key, value)
    enhance_subjects(key, value)
    format_proper_date(key, value)
    fields_should_be_array(key, value)
    translate_geometry_type(key, value)
  end
end

#spatial_validate! ⇒ Object 



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# File 'lib/geo_combine/geoblacklight.rb', line 81

def spatial_validate!
  GeoCombine::BoundingBox.from_envelope(metadata['solr_geom']).valid?
end

#to_json(options = {}) ⇒ String

Returns a string of JSON from a GeoBlacklight hash

Returns:

  • (String) 


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# File 'lib/geo_combine/geoblacklight.rb', line 53

def to_json(options = {})
  metadata.to_json(options)
end

#valid? ⇒ Boolean

Validates a GeoBlacklight-Schema json document

Returns:

  • (Boolean) 


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# File 'lib/geo_combine/geoblacklight.rb', line 60

def valid?
  @schema ||= JSON.parse(open(SCHEMA_JSON_URL).read)
  JSON::Validator.validate!(@schema, to_json, fragment: '#/properties/layer') &&
    dct_references_validate! &&
    spatial_validate!
end