@Override
public MarshalledEntry load(Object key) {
if (!isValidKeyType(key)) {
return null;
}
EntityManager em = emf.createEntityManager();
try {
EntityTransaction txn = em.getTransaction();
long txnBegin = timeService.time();
txn.begin();
try {
long entityFindBegin = timeService.time();
Object entity = em.find(configuration.entityClass(), key);
stats.addEntityFind(timeService.time() - entityFindBegin);
try {
if (entity == null) return null;
InternalMetadata m = null;
if (configuration.storeMetadata()) {
byte[] keyBytes;
try {
keyBytes = marshaller.objectToByteBuffer(key);
} catch (Exception e) {
throw new JpaStoreException("Failed to marshall key", e);
}
long metadataFindBegin = timeService.time();
MetadataEntity metadata = em.find(MetadataEntity.class, keyBytes);
stats.addMetadataFind(timeService.time() - metadataFindBegin);
if (metadata != null && metadata.getMetadata() != null) {
try {
m = (InternalMetadata) marshaller.objectFromByteBuffer(metadata.getMetadata());
} catch (Exception e) {
throw new JpaStoreException("Failed to unmarshall metadata", e);
}
if (m.isExpired(timeService.wallClockTime())) {
return null;
}
}
}
if (trace) log.trace("Loaded " + entity + " (" + m + ")");
return marshallerEntryFactory.newMarshalledEntry(key, entity, m);
} finally {
try {
txn.commit();
stats.addReadTxCommitted(timeService.time() - txnBegin);
} catch (Exception e) {
stats.addReadTxFailed(timeService.time() - txnBegin);
throw new JpaStoreException("Failed to load entry", e);
}
}
} finally {
if (txn != null && txn.isActive()) txn.rollback();
}
} finally {
em.close();
}
}
@Override
public boolean contains(Object key) {
if (!isValidKeyType(key)) {
return false;
}
EntityManager em = emf.createEntityManager();
try {
EntityTransaction txn = em.getTransaction();
long txnBegin = timeService.time();
txn.begin();
try {
long entityFindBegin = timeService.time();
Object entity = em.find(configuration.entityClass(), key);
stats.addEntityFind(timeService.time() - entityFindBegin);
if (trace) log.trace("Entity " + key + " -> " + entity);
try {
if (entity == null) return false;
if (configuration.storeMetadata()) {
byte[] keyBytes;
try {
keyBytes = marshaller.objectToByteBuffer(key);
} catch (Exception e) {
throw new JpaStoreException("Cannot marshall key", e);
}
long metadataFindBegin = timeService.time();
MetadataEntity metadata = em.find(MetadataEntity.class, keyBytes);
stats.addMetadataFind(timeService.time() - metadataFindBegin);
if (trace) log.trace("Metadata " + key + " -> " + toString(metadata));
return metadata == null || metadata.expiration > timeService.wallClockTime();
} else {
return true;
}
} finally {
txn.commit();
stats.addReadTxCommitted(timeService.time() - txnBegin);
}
} catch (RuntimeException e) {
stats.addReadTxFailed(timeService.time() - txnBegin);
throw e;
} finally {
if (txn != null && txn.isActive()) txn.rollback();
}
} finally {
em.close();
}
}