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Metadata Reference

GeoBlacklight uses a lightweight metadata schema designed for geospatial resource discovery. The schema enables keyword searches, faceted refinement, and spatial map searching.

Metadata schema features:

  • based on Dublin Core, with custom elements added for spatial values
  • designed for discovery - to help users find items
  • not designed for complete technical documentation, such as a GIS dataset's processing history
  • includes elements for external links, such as downloads, web services, or supplemental metadata
  • interoperable for the OpenGeoMetadata federated metadata sharing community

Note

Metadata for GeoBlacklight is documented on the OpenGeoMetadata website . Key pages include:

Metadata functionality in GeoBlacklight 4.x

Hover over the column headers for sorting options.

Label
Field URI		 Required - will cause app to error if missing Default facet Search results display Item show default display Relation widget Notes
ID
id		 yes no no no no Functions as the slug (end part) of the item's URL
Access Rights
dct_accessRights_s		 yes yes icon no no If set to "Restricted", a closed padlock icon appears next to the title. Downloads and web service previews will be hidden unless a user logs in using an authentication process. If set to "Public", an open padlock icon appears next to the title. Downloads and web services are accessible.
Format
dct_format_s		 conditional yes no yes no Required if a Download link is included. This value displays on the item show in the button under the download widget.
Title
dct_title_s		 no (see notes) no Clickable text yes no If a title is missing, GeoBlacklight will display the ID as the title.
Alternative Title
dct_alternative_sm		 no no no yes no -
Bounding Box
dcat_bbox		 no no no no no Rectangular extent required for overlap ratio boosting as part of the overall relevance ranking algorithm.
Centroid
dcat_centroid		 no no no no no Can be leveraged for homepage centroid map. Not used in default GeoBlacklight.
Creator
dct_creator_sm		 no yes text on expanded view yes no -
Date Issued
dct_issued_s		 no no no yes no -
Date Range
gbl_dateRange_drsim		 no no no yes no -
Description
dct_description_sm		 no no text on expanded view yes no -
Display Note
gbl_displayNote_sm		 no no no yes no Text displays within a callout box
File Size
gbl_fileSize_s		 no no no yes no -
Geometry
locn_geometry		 no no no no no Required for the map search
Georeferenced
gbl_georeferenced_b		 no yes no yes no -
Identifier
dct_identifier_sm		 no no no no no -
Index Year
gbl_indexYear_im		 no yes text on expanded view yes no Can be used with the Date Range plugin
Is Part Of
dct_isPartOf_sm		 no no no no yes -
Is Replaced By
dct_isReplacedBy_sm		 no no no no no Not used in GeoBlacklight
Is Version Of
dct_isVersionOf_sm		 no no no no yes -
Keyword
dcat_keyword_sm		 no no no yes no -
Language
dct_language_sm		 no no no yes no 3 digit code
License
dct_license_sm		 no no no yes no -
Member Of
pcdm_memberOf_sm		 no no no no yes -
Metadata Version
gbl_mdVersion_s		 no no no no no May be required by some harvesters in OpenGeoMetadata
Provider
schema_provider_s		 no yes icon yes no May control which records an authenticated user has access to.
Publisher
dct_publisher_sm		 no yes no yes no -
References
dct_references_s		 no no no no no See https://opengeometadata.org/reference-uris/ for how different references function in GeoBlacklight
Relation
dct_relation_sm		 no no no no yes -
Replaces
dct_replaces_sm		 no no no no yes -
Resource Class
gbl_resourceClass_sm		 no yes icon yes no GBL will display an icon associated with the value. If multivalued, the first value will be used. Note: there is currently no icon for "Web services".
Resource Type
gbl_resourceType_sm		 no yes no yes no -
Rights
dct_rights_sm		 no no no yes no -
Rights Holder
dct_rightsHolder_sm		 no no no yes no -
Source
dct_source_sm		 no no no no yes -
Spatial Coverage
dct_spatial_sm		 no yes no yes no -
Subject
dct_subject_sm		 no yes no yes no -
Suppressed
gbl_suppressed_b		 no no no no no Hides items from search results. Items are only visible as child or related records in the Relations widgets.
Temporal Coverage
dct_temporal_sm		 no no no yes no -
Theme
dcat_theme_sm		 no yes no yes no -
WxS Identifier
gbl_wxsIdentifier_s		 conditional no no no no Required if a OCG web service is included
Modified
gbl_mdModified_dt		 no no no no no -