org.molgenis.data.cache.l2

Class L2Cache

java.lang.Object

org.molgenis.data.transaction.DefaultMolgenisTransactionListener

org.molgenis.data.cache.l2.L2Cache

All Implemented Interfaces:

TransactionListener

@Service
public class L2Cache
extends DefaultMolgenisTransactionListener

In-memory cache of entities read from cacheable repositories.

Constructor Summary

Constructors

Constructor and Description
L2Cache(TransactionManager transactionManager, EntityHydration entityHydration, TransactionInformation transactionInformation)

Method Summary

Modifier and Type	Method and Description
void	afterCommitTransaction(String transactionId)
Entity	get(Repository<Entity> repository, Object id) Retrieves an entity from the cache or the underlying repository.
List<Entity>	getBatch(Repository<Entity> repository, Iterable<Object> ids) Retrieves a list of entities from the cache.
void	logStatistics() Logs cumulative cache statistics for all known caches.

Methods inherited from class org.molgenis.data.transaction.DefaultMolgenisTransactionListener

commitTransaction, doCleanupAfterCompletion, rollbackTransaction, transactionStarted

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

L2Cache

public L2Cache(TransactionManager transactionManager,
               EntityHydration entityHydration,
               TransactionInformation transactionInformation)

Method Detail

afterCommitTransaction

public void afterCommitTransaction(String transactionId)

Specified by:

afterCommitTransaction in interface TransactionListener

Overrides:

afterCommitTransaction in class DefaultMolgenisTransactionListener

get

public Entity get(Repository<Entity> repository,
                  Object id)

Retrieves an entity from the cache or the underlying repository.

Parameters:

repository - the underlying repository

id - the ID of the entity to retrieve

Returns:

the retrieved Entity, or null if the entity is not present.

Throws:

com.google.common.util.concurrent.UncheckedExecutionException - if the repository throws an error when loading the entity

getBatch

public List<Entity> getBatch(Repository<Entity> repository,
                             Iterable<Object> ids)

Retrieves a list of entities from the cache. If the cache doesn't yet exist, will create the cache.

Parameters:

repository - the underlying repository, used to create the cache loader or to retrieve the existing cache

ids - Iterable of the ids of the entities to retrieve

Returns:

List containing the retrieved entities, missing values are excluded

Throws:

RuntimeException - if the cache failed to load the entities

logStatistics

@Scheduled(fixedRate=60000L)
public void logStatistics()

Logs cumulative cache statistics for all known caches.