wiki:PersistentValidationResults

Version 2 (modified by heikki, 15 years ago) ( diff )

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Persistent Validation results (originating from Nationaal Georegister)

Date 2009/09/03
Contact(s) Heikki Doeleman
Last edited Timestamp
Status draft
Assigned to release 2.5
Resources The work may be done in the NGR project

Overview

This proposal is to run validation (XSD+Schematron) every time a metadata is inserted or changed. The result of validation is persisted in the DB. Persistence is required to show the validation status directly (or maybe query on it later, but this is not implemented at this time). This way we can always show the current "validation status" of metadata, e.g. in the search results page.

Proposal Type

  • Type: Core Change
  • App: GeoNetwork
  • Module: Search engine

Voting History

  • None as yet

Motivations

The motivations for these changes are :

1. A better performance is preferred

Proposal

Validation status is either "valid", "not valid", or "not determined". This last status is the initial validation status when validation has not yet run. Currently the statuses "valid" and "not valid" are shown in the search results. Showing "not determined" as well is a minor change.

A validation report is also stored in the DB. It contains any XSD or schematron validation messages, a reference to the schematron file that was used, a timestamp, and if applicable a message saying that the metadata profile could not be determined. There is basic support for multiple metadata profiles, using different Schematron rules for different profiles.

TODO answer Simon Pigot's remark: "profile support is basic? what does it mean? should be there already; in trunk that is"

TODO maybe expand the proposal to allow for Validation Result States in a context; as discussed with François:
francois: for persistent validation results, you only store valid / not valid /not determined status ? we could not have multiple validation level support like ISO ( not )valid / INSPIRE ( not )valid status / ... for example ?
heikki_: no, a "validation report" as a whole is stored, that combines results from xsd and schemtron validation. To store ISO/INSPIRE/etc. differences in statuses, this would need adapting
francois: so changes we made for geocat.ch on multiple validation level could be ok with that.
heikki_: I don't know what those changes are
francois: let's first vote for your proposal and see later if we could add multiple validation level.
heikki_: ok, if you like to have more, separate statuses, that should be easy to do

An icon indicating the validation status, that links to the validation report if the metadata is not valid, can be included in the search results page an/or in the show metadata page. This indicates something about the quality of the metadata to users, and may encourage metadata providers to produce more valid metadata.

Vaidation results in NGR

Backwards Compatibility Issues

none

Risks

Participants

  • As above

Attachments (1)

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