[JENA-330] Streaming support for SPARQL Update queries and streaming support for quads in INSERT DATA / DELETE DATA queries

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Done
• Fix Version/s: Jena 2.11.0
• Component/s: ARQ
• Assignee: Stephen Allen
• Reporter: Stephen Allen
• Created: 19/Sep/12 19:49
• Updated: 17/Feb/17 14:01
• Resolved: 01/Feb/15 18:56

Description

The SPARQL Update parser currently parses all update queries into a single UpdateRequest object which holds them in memory. Instead the parser should insert queries into something like a Sink<Update>. Additionally it should put the quads from INSERT_DATA and DELETE_DATA into a Sink<Quad> instead of an ArrayList.

This should allow the creation of a streaming update parser, which could be combined with JENA-309 to have full streaming into an underlying transactional store and the ability to handle arbitrarily large INSERT_DATA or DELETE_DATA queries (to the limits of the transaction system).

Issue Links

• is related to: JENA-382 SPARQL Updates are not cancelable
• relates to: JENA-309 Fuseki buffers input data; does not exploit transactions.