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Simple URL harvesting (opendata)

This harvester connects to a remote server via a simple URL to retrieve metadata records. This allows harvesting opendata catalogs such as opendatasoft, ESRI, DKAN and more.

Adding a simple URL harvester

  • Site - Options about the remote site.

    • Name - This is a short description of the remote site. It will be shown in the harvesting main page as the name for this instance of the harvester.
    • Service URL - The URL of the server to be harvested. This can include pagination params like ?start=0&rows=20
    • loopElement - Propery/element containing a list of the record entries. (Indicated as an absolute path from the document root.) eg. /datasets
    • numberOfRecordPath : Property indicating the total count of record entries. (Indicated as an absolute path from the document root.) eg. /nhits
    • recordIdPath : Property containing the record id. eg. datasetid
    • pageFromParam : Property indicating the first record item on the current "page" eg. start
    • pageSizeParam : Property indicating the number of records containned in the current "page" eg. rows
    • toISOConversion : Name of the conversion schema to use, which must be available as XSL on the GN instance. eg. OPENDATASOFT-to-ISO19115-3-2018

    Note

    GN looks for schemas by name in https://github.com/geonetwork/core-geonetwork/tree/4.0.x/web/src/main/webapp/xsl/conversion/import. These schemas might internally include schemas from other locations like https://github.com/geonetwork/core-geonetwork/tree/4.0.x/schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/convert. To indicate the fromJsonOpenDataSoft schema for example, from the latter location directly in the admin UI the following syntax can be used: schema:iso19115-3.2018:convert/fromJsonOpenDataSoft.

    Sample configuration for opendatasoft

    • loopElement - /datasets
    • numberOfRecordPath : /nhits
    • recordIdPath : datasetid
    • pageFromParam : start
    • pageSizeParam : rows
    • toISOConversion : OPENDATASOFT-to-ISO19115-3-2018

    Sample configuration for ESRI

    • loopElement - /dataset
    • numberOfRecordPath : /result/count
    • recordIdPath : landingPage
    • pageFromParam : start
    • pageSizeParam : rows
    • toISOConversion : ESRIDCAT-to-ISO19115-3-2018

    Sample configuration for DKAN

    • loopElement - /result/0
    • numberOfRecordPath : /result/count
    • recordIdPath : id
    • pageFromParam : start
    • pageSizeParam : rows
    • toISOConversion : DKAN-to-ISO19115-3-2018

  • Privileges - Assign privileges to harvested metadata.