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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

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

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

Hibernate ENVERS AuditQuery returns only parts of the entity

3 replies

Squeezing Four HQL Queries Into One

14 replies

Problem with hibernate-configuration and session

2 replies

SessionHolder cannot be cast to EntityManagerHolder problem

2 replies

Could not load minecraft plugin: NoClassDefFoundError

2 replies

hibernate : data layer separate from object layer

2 replies

Object Relational Mapping

Deleting a Many to Many entry while keeping both objects in the database

1 reply

Hibernate sessionFactory is null

3 replies

More »
Best this month

Object Relational Mapping

Is composite-primary key the best solution - Hibernate Spring

7 replies

Multiple representations of the same entity are are being merged

4 replies

Problem with hibernate-configuration and session

2 replies

SessionHolder cannot be cast to EntityManagerHolder problem

2 replies

Could not load minecraft plugin: NoClassDefFoundError

2 replies

hibernate : data layer separate from object layer

2 replies

Object Relational Mapping

Deleting a Many to Many entry while keeping both objects in the database

1 reply

orphan child for Many To Many mappings

0 replies

Hibernate one to many mapping with foreign key association

0 replies

More »
Object Relational Mapping Forum at JavaRanch

HQL paginateing and sorting problem

8 years ago 2 replies

Hibernate JPQL/HQL: aggregate functions show results of wrong table/entity joined twice

8 years ago 1 reply

EntityNotFoundException for OneToMany Mapping

8 years ago 0 replies

Help required for hibernate query (HQL) calling stored procedure

8 years ago 0 replies

Help required for hibernate query (HQL) calling stored procedure

8 years ago 0 replies

How to store normalized OneToMany records with Java EE 5 (GF2.1 & MySQL)

8 years ago 0 replies

Hibernate many-to-many ...with DetachedCriteria/ Criteria

8 years ago 0 replies

What is difference between lazy=true and fetch=select

8 years ago 2 replies

Connecting to multiple databases with Hibernate

8 years ago 1 reply

Hibernate Dialect for MS Access

8 years ago 24 replies

org.hibernate.exception.GenericJDBCException: Cannot open connection

8 years ago 3 replies

How can we decide whether to go for EJB 3 Entity Beans or with any other ORM Implementation tool

8 years ago 0 replies

Starting Hibernate (My First Hibernate program)

8 years ago 5 replies

hibernate datatype confusion?

8 years ago 0 replies

Modify persistence.xml file runtime

8 years ago 1 reply

Error ##### org.hibernate.exception.GenericJDBCException: Cannot open connection

8 years ago 4 replies

Starting Hibernate

8 years ago 0 replies

Hibernate primary Key/User defined Generator class

8 years ago 1 reply

Restrictions constraints in Hibernate

8 years ago 1 reply

Hibernate uncommitted read options (db2 with ur)

8 years ago 0 replies

Impossible to retrieve entity

8 years ago 0 replies

Kodo JPA - “no Metadata found for type” exception

8 years ago 0 replies

Preventing creation/update of entities in JPA

8 years ago 2 replies

Is Hibernate a joke?

8 years ago 0 replies

Problem finding objets with composite key

8 years ago 2 replies

Enforcing Forign Key constraints via Hibernate

8 years ago 2 replies

Using Scalars in Hibernate

8 years ago 0 replies

Hibernate what class need to be specified when calling stored procedure which only returns a number

8 years ago 2 replies

append data to an existing column. - help

8 years ago 1 reply

Is it possible to use 2 composite-id in a hbm.xml

8 years ago 0 replies

using 2 @OnetoMany annoations in one Entity Class

8 years ago 5 replies

How Hibernate returns object

8 years ago 3 replies

org.hibernate.exception. SQLGrammarException

8 years ago 6 replies

Could not synchronize database state with session Unexpected row count: 0 expected: 1

8 years ago 3 replies

Hibernate Query Caching - Why the misses?

8 years ago 4 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 ?

Multiple representations of the same entity are are being merged

Is there a way to create a Conditional insert with JPA

Error on @Entity

Flush old data and make query for a new data

Entity is not mapped

MyBatis

Hibernate ENVERS AuditQuery returns only parts of the entity

Squeezing Four HQL Queries Into One

Problem with hibernate-configuration and session

SessionHolder cannot be cast to EntityManagerHolder problem

Could not load minecraft plugin: NoClassDefFoundError

hibernate : data layer separate from object layer

Deleting a Many to Many entry while keeping both objects in the database

Hibernate sessionFactory is null

Best this month

Is composite-primary key the best solution - Hibernate Spring

Multiple representations of the same entity are are being merged

Problem with hibernate-configuration and session

SessionHolder cannot be cast to EntityManagerHolder problem

Could not load minecraft plugin: NoClassDefFoundError

hibernate : data layer separate from object layer

Deleting a Many to Many entry while keeping both objects in the database

orphan child for Many To Many mappings

Hibernate one to many mapping with foreign key association

Object Relational Mapping Forum at JavaRanch

HQL paginateing and sorting problem

Hibernate JPQL/HQL: aggregate functions show results of wrong table/entity joined twice

EntityNotFoundException for OneToMany Mapping

Help required for hibernate query (HQL) calling stored procedure

Help required for hibernate query (HQL) calling stored procedure

How to store normalized OneToMany records with Java EE 5 (GF2.1 & MySQL)

Hibernate many-to-many ...with DetachedCriteria/ Criteria

What is difference between lazy=true and fetch=select

Connecting to multiple databases with Hibernate

Hibernate Dialect for MS Access

org.hibernate.exception.GenericJDBCException: Cannot open connection

How can we decide whether to go for EJB 3 Entity Beans or with any other ORM Implementation tool

Starting Hibernate (My First Hibernate program)

hibernate datatype confusion?

Modify persistence.xml file runtime

Error ##### org.hibernate.exception.GenericJDBCException: Cannot open connection

Starting Hibernate

Hibernate primary Key/User defined Generator class

Restrictions constraints in Hibernate

Hibernate uncommitted read options (db2 with ur)

Impossible to retrieve entity

Kodo JPA - “no Metadata found for type” exception

Preventing creation/update of entities in JPA

Is Hibernate a joke?

Problem finding objets with composite key

Enforcing Forign Key constraints via Hibernate

Using Scalars in Hibernate

Hibernate what class need to be specified when calling stored procedure which only returns a number

append data to an existing column. - help

Is it possible to use 2 composite-id in a hbm.xml

using 2 @OnetoMany annoations in one Entity Class

How Hibernate returns object

org.hibernate.exception. SQLGrammarException

Could not synchronize database state with session Unexpected row count: 0 expected: 1

Hibernate Query Caching - Why the misses?

Databases