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package eu.etaxonomy.cdm.model;
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import java.util.UUID;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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/**
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* @author cmathew
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*
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* Cache class for CDM Entities based on Ehcache.
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* The class manages a singleton {@link net.sf.ehcache.CacheManager} having a
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* {@link net.sf.ehcache.Cache} initialised with a default configuration.
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*
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* @param <T>
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*/
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public interface ICdmCacher<T extends CdmBase> {
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/**
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* Load a CDM Entity object with given UUID.
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* This method checks the (default) cache for the entity,
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* else retrieves the entity from the service layer.
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*
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* NOTE : Currently this method can only be used for CDM Term
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* (DefinedTermBase) entities.
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*
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* @param uuid of CDM Entity to return
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* @return
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*/
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public T load(UUID uuid);
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/**
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* Get a CDM Entity object with given UUID from the (default) cache.
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*
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* @param uuid
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* @return
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*/
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public T getFromCache(UUID uuid);
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/**
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* Check if a CDM Entity with given UUID exists in the cache.
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*
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* @param uuid of CDM Entity to check
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* @return true if CDM Entity with given UUID exists in the cache, o/w false
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*/
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public boolean exists(UUID uuid);
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/**
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* Check if a CDM Entity with given UUID exists in the cache
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* and that it is not null.
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*
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* @param uuid of CDM Entity to check
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* @return true if CDM Entity with given UUID exists in the cache and that it is not null, o/w false
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*/
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public boolean existsAndIsNotNull(UUID uuid);
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}
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