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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

This class has a composite primary key. It must use an ID class.

22 replies 2

Object Relational Mapping

Is composite-primary key the best solution - Hibernate Spring

7 replies

Can you give me real time scenario when to use Procedure, Function, Cursor, Trigger?

3 replies 2

Integer versus int

4 replies

Error in persistence and other files

8 replies 1

Can we have validations like this if we are not using JPA ?

10 replies

JPA where can I put my cardinalities

3 replies

Multiple representations of the same entity are are being merged

4 replies

Is there a way to create a Conditional insert with JPA

6 replies

Object Relational Mapping

Hibernate does not see manually inserted data

3 replies

Error on @Entity

2 replies

Object Relational Mapping

Flush old data and make query for a new data

5 replies

Entity is not mapped

3 replies

Object Relational Mapping

MyBatis

11 replies

ORA-19032: Expected XML tag, got no content

1 reply

hibernate insert a row that already exists in the database

1 reply

Hibernate ENVERS AuditQuery returns only parts of the entity

3 replies

@SqlResultMapping - Could not locate approprate constructor class

2 replies

Squeezing Four HQL Queries Into One

14 replies

hibernate : OOD for text base elements

1 reply

More »
Best this month

JPA where can I put my cardinalities

3 replies

Object Relational Mapping

Hibernate does not see manually inserted data

3 replies

ORA-19032: Expected XML tag, got no content

1 reply

hibernate insert a row that already exists in the database

1 reply

@SqlResultMapping - Could not locate approprate constructor class

2 replies

hibernate : OOD for text base elements

1 reply

Ibatis join by object instead of by id

0 replies

More »
Object Relational Mapping Forum at JavaRanch

How to ignore some database errors in a Hibernate Session

11 months ago 2 replies

Other JSRs

org.apache.tomcat.dbcp cannot be cast to oracle.jdbc.OracleConnection when using eclipselink JPA

11 months ago 4 replies

Reg Hibernate Cache

1 year ago 0 replies 1

criteria API in Hibernate and Java

1 year ago 2 replies

Hibernate SpringBoot CrudRepository Delete is not working

1 year ago 1 reply

Object Relational Mapping

Hibernate Serialization Issue

1 year ago 3 replies

Problem with Hql Update

1 year ago 7 replies

Object Relational Mapping

MySQL table is there but it says it doesn't exist

1 year ago 9 replies

Many to many be able to save from both side

1 year ago 0 replies

EJB and other Jakarta/Java EE Technologies

OpenJPA to JavaDB configuration (TomEE)

1 year ago 7 replies

Object Relational Mapping

JPA - OneToOne - Unidirection - Parent key refer in child class

1 year ago 2 replies

Datamodel migration tooling

1 year ago 0 replies

Inexplicable ConstraintViolationException

1 year ago 14 replies

Do select operations need a Transaction?

1 year ago 1 reply

JDBC and Relational Databases

Java one code base for multiple domains

1 year ago 1 reply

Hibernate query to remove leading zero

1 year ago 34 replies 2

HQL Error - Unexpected Token?

1 year ago 2 replies

Getting Null Pointer Exception in Hibernate program

1 year ago 3 replies

javax.persistence.EntityExistsException with JPA SequenceGenerator

1 year ago 2 replies

Should I use CDI SessionFactory injection or Hibernate SessionFactory?

1 year ago 0 replies

I want check row if exists on table before insertation with Hibernate

1 year ago 0 replies

Jpql using distinct

1 year ago 0 replies

EJB and other Jakarta/Java EE Technologies

JPA seems to crash

1 year ago 8 replies

How to show Result from combined two tables by hibernate?

1 year ago 19 replies

which file to write the configuration of hibernate.cfg.xml file

1 year ago 1 reply

JDBC and Relational Databases

Types of SQL injections

1 year ago 9 replies 1

Spring

what is JPA Persistence Unit

1 year ago 2 replies

Spring

Cannot resolve reference to bean 'dataSource' while setting bean property 'dataSource'

1 year ago 1 reply

How do you Map String Array to JPA ?

1 year ago 10 replies 1

JPA, Hibernate and (?) missing entity field

1 year ago 0 replies

JDBC and Relational Databases

Generate portable SQL statements

1 year ago 15 replies

Hibernate/Tapestry: "detached entity passed to persist"

1 year ago 2 replies

Spring

Why use JPA over Hibernate?

1 year ago 11 replies

Spring

JpaRepository findOne returns null

1 year ago 2 replies
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Object Relational Mapping

Best this year

This class has a composite primary key. It must use an ID class.

Is composite-primary key the best solution - Hibernate Spring

Can you give me real time scenario when to use Procedure, Function, Cursor, Trigger?

Integer versus int

Error in persistence and other files

Can we have validations like this if we are not using JPA ?

JPA where can I put my cardinalities

Multiple representations of the same entity are are being merged

Is there a way to create a Conditional insert with JPA

Hibernate does not see manually inserted data

Error on @Entity

Flush old data and make query for a new data

Entity is not mapped

MyBatis

ORA-19032: Expected XML tag, got no content

hibernate insert a row that already exists in the database

Hibernate ENVERS AuditQuery returns only parts of the entity

@SqlResultMapping - Could not locate approprate constructor class

Squeezing Four HQL Queries Into One

hibernate : OOD for text base elements

Best this month

JPA where can I put my cardinalities

Hibernate does not see manually inserted data

ORA-19032: Expected XML tag, got no content

hibernate insert a row that already exists in the database

@SqlResultMapping - Could not locate approprate constructor class

hibernate : OOD for text base elements

Ibatis join by object instead of by id

Object Relational Mapping Forum at JavaRanch

How to ignore some database errors in a Hibernate Session

org.apache.tomcat.dbcp cannot be cast to oracle.jdbc.OracleConnection when using eclipselink JPA

Reg Hibernate Cache

criteria API in Hibernate and Java

Hibernate SpringBoot CrudRepository Delete is not working

Hibernate Serialization Issue

Problem with Hql Update

MySQL table is there but it says it doesn't exist

Many to many be able to save from both side

OpenJPA to JavaDB configuration (TomEE)

JPA - OneToOne - Unidirection - Parent key refer in child class

Datamodel migration tooling

Inexplicable ConstraintViolationException

Do select operations need a Transaction?

Java one code base for multiple domains

Hibernate query to remove leading zero

HQL Error - Unexpected Token?

Getting Null Pointer Exception in Hibernate program

javax.persistence.EntityExistsException with JPA SequenceGenerator

Should I use CDI SessionFactory injection or Hibernate SessionFactory?

I want check row if exists on table before insertation with Hibernate

Jpql using distinct

JPA seems to crash

How to show Result from combined two tables by hibernate?

which file to write the configuration of hibernate.cfg.xml file

Types of SQL injections

what is JPA Persistence Unit

Cannot resolve reference to bean 'dataSource' while setting bean property 'dataSource'

How do you Map String Array to JPA ?

JPA, Hibernate and (?) missing entity field

Generate portable SQL statements

Hibernate/Tapestry: "detached entity passed to persist"

Why use JPA over Hibernate?

JpaRepository findOne returns null

Databases