Rob Atkinson created MARMOTTA-630:
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Summary: Add support for parameterised SPARQL queries and
configurable resource graphs via URL based APIs
Key: MARMOTTA-630
URL: https://issues.apache.org/jira/browse/MARMOTTA-630
Project: Marmotta
Issue Type: New Feature
Components: LDClient, Platform, Web Services
Reporter: Rob Atkinson
The existing functionality allows a resource to be retrieved by URL, and only a
single-level depth traversal of the graph or relationships.
The Linked Data API (https://github.com/UKGovLD/linked-data-api) is an example
of a configurable API that allows both parameterised queries and limited
response graph construction.
This module would support several use cases typical of existing data publishing
practices, that could be enhanced by Linked Data approach:
1) where the data is complex and partially populated, and in reality the client
cannot predict what queries will deliver useful results
2) any client wishing to explore linked data and get a relevant graph of
information in a single query
3) any publisher wishing to protect their system from uncontrolled SPARQL
queries
4) any time the publisher wants to control the response graph for a given object
There are similarities with LDcache - in that such APIs can also be used to
federate API access across multiple SPARQL endpoints. It is suggested therefore
that this is a layer between the existing content-negotiation and
ResourceWebService in the core.
A separate module may be beneficial - to encourage candidate providers to offer
a solution in this space. adding to SPARQL perhaps less ideal because the user
may not wish to expose SPARQL endpoints - but perhaps this can be handled by
easy permissions configuration.
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