Spring Data JPA and Exists query

by

Spring Data JPA 1.11 now supports the exists projection in repository query derivation.

See documentation here.

In your case the following will work:

public interface MyEntityRepository extends CrudRepository<MyEntity, String> {  
    boolean existsByFoo(String foo);
}

More Related Contents:

  1. JPQL Create new Object In Select Statement – avoid or embrace?
  2. How to fetch FetchType.LAZY associations with JPA and Hibernate in a Spring Controller
  3. How to use multiple JOIN FETCH in one JPQL query
  4. Doing an “IN” query with Hibernate
  5. How can I avoid the Warning “firstResult/maxResults specified with collection fetch; applying in memory!” when using Hibernate?
  6. IN-clause in HQL or Java Persistence Query Language
  7. Delete Not Working with JpaRepository
  8. FetchMode join makes no difference for ManyToMany relations in spring JPA repositories
  9. How to properly use findBySomeOtherId not findById in Spring data jpa?
  10. Hibernate throws MultipleBagFetchException – cannot simultaneously fetch multiple bags
  11. Hibernate Annotations – Which is better, field or property access?
  12. Hibernate JPA Sequence (non-Id)
  13. How to store date/time and timestamps in UTC time zone with JPA and Hibernate
  14. What is this spring.jpa.open-in-view=true property in Spring Boot?
  15. Bypass GeneratedValue in Hibernate (merge data not in db?)
  16. How does the FetchMode work in Spring Data JPA
  17. Hibernate – @ElementCollection – Strange delete/insert behavior
  18. JPA SQL Server No Dialect mapping for JDBC type: -9
  19. Can I combine a @Query definition with a Specification in a Spring Data JPA repository method?
  20. Multiple fetches with EAGER type in Hibernate with JPA
  21. Could not commit JPA transaction: Transaction marked as rollbackOnly
  22. Spring JpaRepository – Detach and Attach entity
  23. Using the JPA Criteria API, can you do a fetch join that results in only one join?
  24. java.lang.IllegalStateException: Multiple representations of the same entity with @ManyToMany 3 entities
  25. JPA: what is the proper pattern for iterating over large result sets?
  26. How do I properly do a background thread when using Spring Data and Hibernate?
  27. Error creating bean with name ‘entityManagerFactory
  28. How to force Hibernate to return dates as java.util.Date instead of Timestamp?
  29. JPA Select latest instance for each item
  30. Spring Data + JPA with multiple datasources but only one set of Repositories

Leave a Comment