[infinispan-issues] [JBoss JIRA] (ISPN-8331) CacheEntryExpiredEvent.getValue() is always null when entry expired from cache store

[Radoslav Husar (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-8331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13543988#comment-13543988 ] 

Radoslav Husar commented on ISPN-8331:
--------------------------------------

The API for this is already implemented by [~william.burns] with @Experimental {{org.infinispan.persistence.spi.AdvancedCacheExpirationWriter.ExpirationPurgeListener#marshalledEntryPurged}}. The problem of course is that none of the stores currently implement this.

{quote} If we do, we may want to provide a way to optionally pull the value such as a `Supplier` to get the value.{quote}

Why would this be necessary? The implenters would return implementation of the org.infinispan.marshall.core.MarshalledEntry which would proxy the getValueBytes() and getValue() method calls. 

> CacheEntryExpiredEvent.getValue() is always null when entry expired from cache store
> ------------------------------------------------------------------------------------
>
>                 Key: ISPN-8331
>                 URL: https://issues.jboss.org/browse/ISPN-8331
>             Project: Infinispan
>          Issue Type: Enhancement
>          Components: Expiration
>    Affects Versions: 9.1.1.Final
>            Reporter: Paul Ferraro
>
> AdvancedCacheWriter.PurgeListener callback only sends the key of the expired entry.
> Proposal:
> AdvancedCacheWriter.PurgeListener.entryPurged(MarshalledEntry entry);
> This way, we only incur the cost of unmarshalling value/metadata when requested.



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