[hibernate-issues] [Hibernate-JIRA] Created: (HSEARCH-531) Use Lucene fieldcache

[Sanne Grinovero (JIRA)]

Use Lucene fieldcache
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                 Key: HSEARCH-531
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-531
             Project: Hibernate Search
          Issue Type: Improvement
          Components: query
            Reporter: Sanne Grinovero
             Fix For: 3.4.0


The Lucene per-segment FieldCache should be used for strings we fetch from the index (Stored), by default as we do with classname and PK.
It might be useful for people to be able to add more fields to this cache in case of projections usage.
(It's purpose is to speed up this reading of stored info - being per segment it's not invalidated per new IndexReader but per changed segments).

Likely need a switch to turn it off, as it could consume much memory.

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