[SOLR-3857] DIH: SqlEntityProcessor with "simple" cache broken

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 3.6.1, 4.0-BETA
• Component/s: contrib - DataImportHandler
• Assignee: Unassigned
• Reporter: James Dyer
• Created: 19/Sep/12 15:47
• Updated: 29/Aug/20 18:42
• Resolved: 29/Aug/20 18:42

Description

The wiki describes a usage of CachedSqlEntityProcessor like this:

<entity name="y" query="select * from y where xid=${x.id}" processor="CachedSqlEntityProcessor">

This creates what the code refers as a "simple" cache. Rather than build the entire cache up-front, the cache is built on-the-go. I think this has limited use cases but it would be nice to preserve the feature if possible.

Unfortunately this was not included in any (effective) unit tests, and SOLR-2382 entirely broke the functionality for 3.6/4.0-alpha+ . At a first glance, the fix may not be entirely straightforward.

This was found while writing tests for SOLR-3856.

Issue Links

• is duplicated by: SOLR-4561 CachedSqlEntityProcessor with parametarized query is broken
• is superceded by: SOLR-14783 Remove DIH from 9.0