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Object Relational Mapping

JPA, JDO, Hibernate, and other such new fangled database technologies

This forum is for mapping frameworks. For questions about SQL itself, we recommend the JDBC forum or the interactive JDBC FAQ! We also have a Hibernate FAQ

Best this year

Problems about @OneToMany and @ManyToOne

14 replies 2

Object Relational Mapping

bi-directional OneToMany and ManyToOne foreign key always null Spring Boot hibernate

26 replies 2 1

Object Relational Mapping

JPA No Persistence provider exception

15 replies 2

Unable to locate persistence units

7 replies

Object Relational Mapping

JPA question on OneToMany MapBy vs JoinColumn

4 replies

Hibernate running multiple queries on load

5 replies

Suggest a book on RDBMS concepts

6 replies

JPA TransactionRequiredException

2 replies

Several entities saving

1 reply 1

Could not determine type for: java.util.Set error

1 reply

heir achy way of representing objects model of same table

0 replies

Object Relational Mapping

Question on one to one bidirectional

2 replies

could not extract ResultSet

0 replies

Hibernate runs query against view but returns null values

2 replies

Would like to confirm if I get the relationship between these entities right

6 replies

How to Optimize Hibernate buildSessionFactory();

3 replies

Persism 1.1.0 released with support for Records!

0 replies

Object Relational Mapping

Changing a datasoure using Hibernate

7 replies

Issue with identity field value insertion for DB2 Table and using spring JPA

0 replies

Persism 1.0.1 released - A zero ceremony ORM for Java

2 replies

More »
Best this month

Object Relational Mapping

JPA No Persistence provider exception

15 replies 2

Unable to locate persistence units

7 replies

heir achy way of representing objects model of same table

0 replies

could not extract ResultSet

0 replies

More »
Object Relational Mapping Forum at JavaRanch

Hibernate Commit Exception

2 hours ago 1 reply

Unable to locate persistence units

2 hours ago 9 replies

Object Relational Mapping

JPA No Persistence provider exception

1 week ago 15 replies 2

heir achy way of representing objects model of same table

1 week ago 0 replies

Help using filters with Hibernate

1 week ago 4 replies

could not extract ResultSet

3 weeks ago 0 replies

Persism 1.1.0 released with support for Records!

1 month ago 0 replies

Issue with identity field value insertion for DB2 Table and using spring JPA

1 month ago 0 replies

Hibernate running multiple queries on load

1 month ago 5 replies

Object Relational Mapping

JPA question on OneToMany MapBy vs JoinColumn

2 months ago 4 replies

Object Relational Mapping

Question on one to one bidirectional

2 months ago 2 replies

Hibernate runs query against view but returns null values

2 months ago 2 replies

JPA TransactionRequiredException

2 months ago 2 replies

Could not determine type for: java.util.Set error

2 months ago 1 reply

Hibernate Interview Questions

3 months ago 14 replies

how to use JPA to save a list of objects

3 months ago 4 replies

Persism 1.0.1 released - A zero ceremony ORM for Java

3 months ago 2 replies

Several entities saving

3 months ago 1 reply 1

Hibernate - Table Not Mapped

4 months ago 5 replies 1

SerializationException: could not deserialize

4 months ago 7 replies

Announcing Persism 1.0.0 - A no nonsense ORM for Java

4 months ago 2 replies

How to Optimize Hibernate buildSessionFactory();

5 months ago 3 replies

Object Relational Mapping

Converting Derived JPA query into native query: ORDER BY is NOT working

5 months ago 1 reply

Suggest a book on RDBMS concepts

5 months ago 6 replies

Why i can't catch ConstraintViolationException exception ?

5 months ago 9 replies

Object Relational Mapping

Changing a datasoure using Hibernate

6 months ago 7 replies

javax.persistence.PersistenceException: No Persistence provider for EntityManager

7 months ago 4 replies

Problems about @OneToMany and @ManyToOne

7 months ago 14 replies 2

The internal connection pool has reached its maximum size and no connection is currently available!

7 months ago 5 replies

Should I use One-to-Many and Many-to-One or leave them out for flexibility in SpringBoot JPA app ?

8 months ago 0 replies

Would like to confirm if I get the relationship between these entities right

8 months ago 6 replies

[Oracle][ODBC SQL Server Driver]Invalid parameter number {07009} in accessing from Synonym to MS SQL

9 months ago 11 replies

Object Relational Mapping

How to map multiple tables in Hibernate query

10 months ago 2 replies

Other JSE/JEE APIs

In java/jpa/hibernate not read the database table modified from other external program

10 months ago 5 replies

Modelling complex many to many relationship

10 months ago 5 replies 2
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Object Relational Mapping

Best this year

Problems about @OneToMany and @ManyToOne

bi-directional OneToMany and ManyToOne foreign key always null Spring Boot hibernate

JPA No Persistence provider exception

Unable to locate persistence units

JPA question on OneToMany MapBy vs JoinColumn

Hibernate running multiple queries on load

Suggest a book on RDBMS concepts

JPA TransactionRequiredException

Several entities saving

Could not determine type for: java.util.Set error

heir achy way of representing objects model of same table

Question on one to one bidirectional

could not extract ResultSet

Hibernate runs query against view but returns null values

Would like to confirm if I get the relationship between these entities right

How to Optimize Hibernate buildSessionFactory();

Persism 1.1.0 released with support for Records!

Changing a datasoure using Hibernate

Issue with identity field value insertion for DB2 Table and using spring JPA

Persism 1.0.1 released - A zero ceremony ORM for Java

Best this month

JPA No Persistence provider exception

Unable to locate persistence units

heir achy way of representing objects model of same table

could not extract ResultSet

Object Relational Mapping Forum at JavaRanch

Hibernate Commit Exception

Unable to locate persistence units

JPA No Persistence provider exception

heir achy way of representing objects model of same table

Help using filters with Hibernate

could not extract ResultSet

Persism 1.1.0 released with support for Records!

Issue with identity field value insertion for DB2 Table and using spring JPA

Hibernate running multiple queries on load

JPA question on OneToMany MapBy vs JoinColumn

Question on one to one bidirectional

Hibernate runs query against view but returns null values

JPA TransactionRequiredException

Could not determine type for: java.util.Set error

Hibernate Interview Questions

how to use JPA to save a list of objects

Persism 1.0.1 released - A zero ceremony ORM for Java

Several entities saving

Hibernate - Table Not Mapped

SerializationException: could not deserialize

Announcing Persism 1.0.0 - A no nonsense ORM for Java

How to Optimize Hibernate buildSessionFactory();

Converting Derived JPA query into native query: ORDER BY is NOT working

Suggest a book on RDBMS concepts

Why i can't catch ConstraintViolationException exception ?

Changing a datasoure using Hibernate

javax.persistence.PersistenceException: No Persistence provider for EntityManager

Problems about @OneToMany and @ManyToOne

The internal connection pool has reached its maximum size and no connection is currently available!

Should I use One-to-Many and Many-to-One or leave them out for flexibility in SpringBoot JPA app ?

Would like to confirm if I get the relationship between these entities right

[Oracle][ODBC SQL Server Driver]Invalid parameter number {07009} in accessing from Synonym to MS SQL

How to map multiple tables in Hibernate query

In java/jpa/hibernate not read the database table modified from other external program

Modelling complex many to many relationship

Databases