Cordra
Introduction
Highly configurable software for managing digital objects at scale.
Datasheet
Status: 14.06.2022
| Homepage | https://www.cordra.org/ |
| Description | https://www.cordra.org/cordra.html |
| Code | https://gitlab.com/cnri/cordra |
| Communities | --- |
| Version | 2.4.0 (released on 21.02.2022) |
Features
Status: 19.05.2021
| Supported Schema(s) | any | only predefined ones |
| Supported Format(s) | JSON Schema | |
| Interface(s) | REST | +DOIP + IRP |
| Open Source | yes | code is open available but no open development |
| License | Cordra License Agreement | |
| Versioning | yes | simple object versioning (kind of a history) |
| AAI | yes | JWT, HTTP Basic Auth |
| External Storage | yes | configurable, mandatory for distributed systems |
| Referencable | yes | internal & external via IRP interface |
Description
- Register Schema:
- Support for arbitrary schemas of a specific format (e.g. JSON Schema, XSD)
- The schema should at least be referencable by a unique identifier.
- Update Schema:
- Possibility to
- work on different versions of a schema
- adapt schemas over time
- Possibility to
- Validate Schema:
- Check schema for correct syntax
- Ingest Metadata:
- Store metadata (document) in repository
- Ideally with previous validation
- Store metadata (document) in repository
- Update Metadata:
- Possibility to update already ingested metadata (documents).
- Validate Metadata:
- Possibility to validate documents on the basis of registered schemas.
- Search by Administrative MD:
- Search documents by their metadata (e.g. ingest date, ingester, ...)
- Search by Content:
- Search documents by their content
- Persistent Identifier:
- Support for Persistent Identifiers (e.g. DOI, Handle)
Additional Features
Status: 19.05.2021
- Scalable infrastructure (allows load balancing)
- Referencing one schema from another
- Online editor for creating metadata documents (may not work with references)
- Validates supplied information against one or more pre-defined JSON schemas, and stores them as digital objects
- adoptable via hooks
- e.g. validation
- Highly configurable
- DOIP (Digital Object Interface Protocol) support
- IRP (Identifier/Resolution Protocol) support
- Indexing (via configured service (e.g. solr, elasticsearch, ...)
- OAI-PMH (!?) (via Metadata Translation) Proof-of-concept
Functionality
Status: 19.05.2021
| Function | Supported | Remarks |
|---|---|---|
| Register Schema | (+) | must be configured |
| Update Schema | (+) | overwrites the previous version |
| Validate Schema | - | |
| Ingest Metadata | + | |
| Update Metadata | + | overwrites document (create a version in beforehand to prevent loss of 'old' document (experimental)) |
| Validate Metadata | + | via hooks |
| Search by ... | ||
| ... Administrative MD | + | |
| ... Content | + | via external service |
| Persistent Identifier | + | via external service |
Remarks
Optimized for handling NoSQL information. Integrates popular storage and indexing solutions, and presents a unified interface. Provides configurable hooks to validate and update information at various stages of a digital object lifecycle.