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https://issues.apache.org/jira/browse/LUCENE-5427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13887830#comment-13887830
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Per Steffensen edited comment on LUCENE-5427 at 1/31/14 3:38 PM:
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Fairly primitive for branch_4x patch attached. Didn't want to make the patch
too big, so e.g. I didn't change from using a static FieldCache.DEFAULT to
something non-static and method'ish even though that would be obvious to do
some day. The solution requires that you change the implementation of the
FieldCache before you ever start using it. I am very unsure what would happen
if you changed the FieldCache after someone started using it, so I didn't want
to include that. Changed FieldCacheImpl so that it is easier to extend it,
which you would probably want to do in most cases where you create you own
FieldCache-implementation. The changes made to FieldCacheImp are the ones
necessary for us to make our
do-not-put-anything-in-the-caches-FieldCache-implementation - so that kinda
drove what changes I made to FieldCacheImpl.
was (Author: steff1193):
Fairly primitive patch attached. Didn't want to make the patch too big, so e.g.
I didn't change from using a static FieldCache.DEFAULT to something non-static
and method'ish even though that would be obvious to do some day. The solution
requires that you change the implementation of the FieldCache before you ever
start using it. I am very unsure what would happen if you changed the
FieldCache after someone started using it, so I didn't want to include that.
Changed FieldCacheImpl so that it is easier to extend it, which you would
probably want to do in most cases where you create you own
FieldCache-implementation. The changes made to FieldCacheImp are the ones
necessary for us to make our
do-not-put-anything-in-the-caches-FieldCache-implementation - so that kinda
drove what changes I made to FieldCacheImpl.
> Support for changing FieldCache implementation in Lucene
> --------------------------------------------------------
>
> Key: LUCENE-5427
> URL: https://issues.apache.org/jira/browse/LUCENE-5427
> Project: Lucene - Core
> Issue Type: New Feature
> Components: core/search
> Affects Versions: 4.6
> Reporter: Per Steffensen
> Labels: facet, fieldcache, range, search, sort
> Attachments: Override_FieldCache_impl_to_use.patch
>
>
> Believe in general it would be a nice feature to be able to overwrite the
> FieldCache-implementation in Lucene.
> For instance we override with a FieldCache-implementation that basically does
> not allow anything to be put in the FieldCache caches. We have so much data
> that it always creates memory issues.
> But I could imagine other reasons for wanting to override the
> FieldCache-implementation
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