So, if you get any exception after flush() is called, then the transaction will be rolled back. While getTransaction().commit() also flushes the data to the database but it also marks the end of the current transaction. it's synchronize database with the current state of object/objects held in the memory but it does not commit the transaction. So it can be called multiple times in a transaction to save the entity piece-by-piece i.e. Serializable getIdentifier(Object object) throws HibernateException isDirty: Does this session contain any changes which must be synchronized with the database?īoolean isDirty() throws HibernateException flush: Force this session to flush.įlush is used to save an entity immediately into the database. SessionStatistics getStatistics() contains: Check if this instance is associated with this Session.īoolean contains(Object object) getIdentifier Query createFilter(Object collection, String queryString) throws HibernateException getStatistics: Get the statistics for this session. LockMode getCurrentLockMode(Object object) throws HibernateExceptionĬreateFilter: Create a new instance of Query for the given collection and filter string. GetCurrentLockMode: Determine the current lock mode of the given object. Void refresh(Object object) throws HibernateException Session.LockRequest buildLockRequest(LockOptions lockOptions) Void lock(Object object, LockMode lockMode) throws HibernateException Void delete(Object object) throws HibernateException Note: persist() is supported by JPA, while save() is only supported by Hibernate. If the object properties are changed before the transaction is committed or session is flushed, it will also be saved into database. persist() method doesn't guarantee that the identifier value will be assigned to the persistent instance immediately, the assignment might happen at flush time.It is useful in long-running conversations with an extended Session context.The persist() & merge() operation can only be called within a transaction, an exception will be thrown outside of a transaction.save(), update() & saveOrUpdate() can use without transaction also, but mapped objects not getting saved if session is not flushed.This will be used only within transaction boundaries. Return type of persist methods is void.Void persist(Object object) throws HibernateException Object merge(Object object) throws HibernateException Void update(Object object) throws HibernateException Void saveOrUpdate(Object object) throws HibernateException Serializable save(Object object) throws HibernateException Void replicate(Object object, ReplicationMode replicationMode) throws HibernateException save Object get(Class clazz, Serializable id) throws HibernateException Object load(Class theClass, Serializable id, LockMode lockMode) throws HibernateException get Do not close open iterators or instances of ScrollableResults. Evict all loaded instances and cancel all pending saves, updates and deletions. Void clear(): Completely clear the session. Void evict(Object object) throws HibernateException clear List Hibernate Session interface methods.Įvict : Remove this instance from the session cache.
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