What does EntityManager.flush do and why do I need to use it?

by

A call to EntityManager.flush(); will force the data to be persisted in the database immediately as EntityManager.persist() will not (depending on how the EntityManager is configured: FlushModeType (AUTO or COMMIT) by default is set to AUTO and a flush will be done automatically. But if it’s set to COMMIT the persistence of the data to the underlying database will be delayed until the transaction is committed.

More Related Contents:

  1. No Persistence provider for EntityManager named X
  2. When should EntityManagerFactory instance be created/opened?
  3. How to set the timeout period on a JPA EntityManager query
  4. PersistenceUnit vs PersistenceContext
  5. Injecting EntityManager Vs. EntityManagerFactory
  6. having an exception when saving oracle type object in some entity
  7. How can I make a JPA OneToOne relation lazy
  8. Can someone explain mappedBy in JPA and Hibernate?
  9. When and why JPA entities should implement the Serializable interface?
  10. Spring Boot – Cannot determine embedded database driver class for database type NONE
  11. JPA : How to convert a native query result set to POJO class collection
  12. Spring-Data-Jpa Repository – Underscore on Entity Column Name
  13. How to persist a property of type List in JPA?
  14. Handling soft-deletes with Spring JPA
  15. Getting Database connection in pure JPA setup
  16. Hibernate and no PK
  17. annotation to filter results of a @OneToMany association
  18. Parameter in like clause JPQL
  19. Hibernate/JPA – annotating bean methods vs fields [duplicate]
  20. Is it possible to dynamically define column names in Hibernate / JPA?
  21. Hibernate: “Field ‘id’ doesn’t have a default value”
  22. How to use @Transactional with Spring Data?
  23. JPA using multiple database schemas
  24. Hibernate native query – char(3) column
  25. How to force Hibernate to return dates as java.util.Date instead of Timestamp?
  26. EclipseLink 2.7.0 and JPA API 2.2.0 – signature mismatch
  27. JPA Select latest instance for each item
  28. Spring Data + JPA with multiple datasources but only one set of Repositories
  29. java.lang.ClassNotFoundException: javax.persistence.Persistence cannot be found with JPA
  30. How to use Postgres JSONB datatype with JPA?

Leave a Comment