package com.buschmais.cdo.impl.cache;
import com.buschmais.cdo.impl.SessionContext;
import com.buschmais.cdo.impl.instancelistener.InstanceListenerService;
import com.buschmais.cdo.spi.datastore.DatastoreEntityMetadata;
import com.buschmais.cdo.spi.datastore.DatastoreRelationMetadata;
import com.buschmais.cdo.spi.datastore.DatastoreSession;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import java.util.Set;
public class CacheSynchronizationService<Entity, Relation> {
private final SessionContext<?, Entity, ?, ?, ?, Relation, ?, ?> sessionContext;
public CacheSynchronizationService(SessionContext<?, Entity, ?, ?, ?, Relation, ?, ?> sessionContext) {
this.sessionContext = sessionContext;
}
public void flush() {
DatastoreSession<?, Entity, ? extends DatastoreEntityMetadata<?>, ?, ?, Relation, ? extends DatastoreRelationMetadata<?>, ?> datastoreSession = sessionContext.getDatastoreSession();
InstanceListenerService instanceListenerService = sessionContext.getInstanceListenerService();
for (Object instance : sessionContext.getRelationCache().writtenInstances()) {
Relation relation = sessionContext.getRelationInstanceManager().getDatastoreType(instance);
instanceListenerService.preUpdate(instance);
validateInstance(instance);
datastoreSession.flushRelation(relation);
instanceListenerService.postUpdate(instance);
}
for (Object instance : sessionContext.getEntityCache().writtenInstances()) {
Entity entity = sessionContext.getEntityInstanceManager().getDatastoreType(instance);
instanceListenerService.preUpdate(instance);
validateInstance(instance);
datastoreSession.flushEntity(entity);
instanceListenerService.postUpdate(instance);
}
}
private void validateInstance(Object instance) {
Set<ConstraintViolation<Object>> constraintViolations = sessionContext.getInstanceValidationService().validate(instance);
if (!constraintViolations.isEmpty()) {
throw new ConstraintViolationException(constraintViolations);
}
}
}