As the project entered the fourth month, work continued on migration planning and mapping, migration-utils, and Drupal integration.
Migration work was split between working on migration-utils, migration mappings, data modeling (furthering Portland Common Data Model compliance), and working with the Islandora (Fedora 4 Interest Group), Fedora (Fedora Tech meetings), and Hydra (Hydra Metadata Working Group) communities on the preceding items. In addition, Audit Service-- a key requirement of an Islandora community fcrepo3 -> fcrepo4 migration -- finalized the second phase of the project. Community stakeholders are currently reviewing and providing feedback.
Work on migration-utils focused mainly applying a number of mappings (outlined here) to the utility, adding support for object-to-object linking, and providing documentation on how to use the utility. This work can be demonstrated by building the Islandora 7.x-2.x Vagrant Box, cloning the migration-utils repository, and pointing migration-utils at a fcrepo3 native filesystem or directory of exported FOXML.
As for object modeling and inter-community work, an example of this work is the below image of a sample Islandora Large Image object modeled in the Portland Common Data Model. This model will continue to evolve as the communities work together in the various Hydra Metadata Working Group sub-working groups.
On the Drupal side of things, work was started on Middleware Services, a middleware service that will utilize the Fedora 4 REST API and the Drupal Services modules, and create an API for the majority of interactions between the two systems. In addition, a few Drupal modules have been created to leverage this; islandora_basic_image, islandora_collection, islandora_dcterms.
In addition, the team has been exploring options with RDF integration and support in Drupal, as well as how to handle editing (Islandora XML Forms) the various descriptive metadata schemas the community uses. This is captured in a few issues in the issue queue; #27 & #28. Due to the importance of the issue, a special Fedora 4 Interest Group meeting was held to discuss how to proceed with this functionality in Islandora 7.x-2.x. The group's consensus was to solicit use cases from the community to better understand how to proceed with 7.x-2.x
Work will continue on the migration and Drupal sides of the project into May.