[jira] [Updated] (LUCENE-3360) Move FieldCache to IndexReader

["Martijn van Groningen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-3360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Martijn van Groningen updated LUCENE-3360:
------------------------------------------

    Fix Version/s: 3.4

> Move FieldCache to IndexReader
> ------------------------------
>
>                 Key: LUCENE-3360
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3360
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Martijn van Groningen
>             Fix For: 3.4, 4.0
>
>
> Move the static FieldCache.DEFAULT field instance to atomic IndexReaders, so that FieldCache insanity caused by the WeakHashMap no longer occurs.
> * Add a new method to IndexReader that by default throws an UOE:
> {code}public FieldCache getFieldCache(){code}
> * The SegmentReader implements this method and returns its own internal FieldCache implementation. This implementation just uses a HashMap<Entry<T>,Object>> to store entries.
> * The SlowMultiReaderWrapper implements this method as well and basically behaves the same as the current FieldCacheImpl.
> This issue won't solve the insanity that comes from inconsistent usage of a single field (for example retrieve both int[] and DocTermIndex for the same field). 

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