org.apache.solr.search

Interface CacheRegenerator

All Known Implementing Classes:

NoOpRegenerator, SolrPluginUtils.IdentityRegenerator

public interface CacheRegenerator

Implementations of CacheRegenerator are used in autowarming to populate a new cache based on an old cache. regenerateItem is called for each item that should be inserted into the new cache.

Implementations should have a noarg constructor and be thread safe (a single instance will be used for all cache autowarmings).

Method Summary

Methods

Modifier and Type	Method and Description
boolean	regenerateItem(SolrIndexSearcher newSearcher, SolrCache newCache, SolrCache oldCache, Object oldKey, Object oldVal) Regenerate an old cache item and insert it into newCache

Method Detail

regenerateItem

boolean regenerateItem(SolrIndexSearcher newSearcher,
                     SolrCache newCache,
                     SolrCache oldCache,
                     Object oldKey,
                     Object oldVal)
                       throws IOException

Regenerate an old cache item and insert it into newCache

Parameters:

newSearcher - the new searcher who's caches are being autowarmed

newCache - where regenerated cache items should be stored. the target of the autowarming

oldCache - the old cache being used as a source for autowarming

oldKey - the key of the old cache item to regenerate in the new cache

oldVal - the old value of the cache item

Returns:

true to continue with autowarming, false to stop

Throws:

IOException