Jsonld cleanup

[Natkeeran]

!Warning! This PR introduces backward breaking changed. You won't be work with existing annotations after applying this PR because it changes the structure of the jsonld.

What does this Pull Request do?

This is a major cleanup of the jsonld for annotation datastream (WADM). Some notable changes are:

• Removed the UUID for @id. Instead using canonical url of the annotation (pid).
• body and target are properly structured
• duplicate target/context info has been removed
• As per https://www.w3.org/TR/annotation-vocab/, "http://ontology.digitalscholarship.utsc.utoronto.ca/ns/anno_extension.jsonld" context added to selector to support image and video timespan selection. Thanks to Kim for pointing this out.

Known issues:

• target body format is not a fully qualified mime type. For video/audio, we are using the values from the OpenVideoAnnotation library. When a finer mime type can be specified, the module will should work without any issues.
• We have one additional property that is not in the anno.jsonld: modifiedBy. This is just an additional piece of information we are tracking. Not being used by the application. We can simply remove this property.

How should this be tested?

• Get the PR
• Do Sanity tests (CRUD) for each content type (Basic Image, Large Image, Paged Content, Audio, Video, Oral History)
• Verify WADM and WADM_SEARCH datasteams (WADM should confirm to the jsonld standards with the above exceptions)

[kimpham54]

for testing purposes, @Natkeeran is it ok to pull in changes to the module and configurations that we were using in our VMs before this PR? Or does this require a completely fresh install ?

[Natkeeran]

@kimpham54 If you have the latest context, you can just get the PR. No need to re install.

[MarcusBarnes]

With the change in how we set the value for the target source property, we need to update how we extract the PID from that value. See https://github.com/digitalutsc/islandora_web_annotations/blob/7.x/islandora_web_annotations.module#L238. The result is that the annotationContainer for an object is not removed from Fedora when you delete the last annotations on an object.

[MarcusBarnes]

Thanks @Natkeeran. The issue with the annotation container not being deleted, noted in my earlier comment, has been address in the subsequent commit https://github.com/digitalutsc/islandora_web_annotations/pull/198/commits/57ff9f244c9aca5efece3ef96226fda92de5c89d.

[kimpham54]

@Natkeeran the total property doesn't work for AnnotationContainer. Can we deprecate this?

[kimpham54]

keep @ type, @ id, and add @ to //body/type for Annotation, //first/id and //first/type for Annotation Container.

Also, bodytext in Annotation needs to be changed to bodyValue https://www.w3.org/TR/annotation-model/#string-body

[kimpham54]

looks good to me. @MarcusBarnes will you do a final test?