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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

Integer versus int

6 replies

JPA newbie question

7 replies

HQL Query to return the single most recent record, but looking at two (not one) date columns

5 replies

JPA starter

4 replies

How many records are saved in Hibernate cache?

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

Best Practices - Strategy - Versions

0 replies

Hibernate Mapping Issue in Many to Many Relationship

2 replies

Hibernate Envers - Why Query API perform sub-queries for DefaultAuditStrategy

0 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

More »
Best this month

HQL Query to return the single most recent record, but looking at two (not one) date columns

5 replies

How many records are saved in Hibernate cache?

4 replies

Best Practices - Strategy - Versions

0 replies

Hibernate Envers - Why Query API perform sub-queries for DefaultAuditStrategy

0 replies

More »
Object Relational Mapping Forum at JavaRanch

HQL Query to return the single most recent record, but looking at two (not one) date columns

23 hours ago 5 replies

How many records are saved in Hibernate cache?

4 days ago 4 replies

Best Practices - Strategy - Versions

1 week ago 0 replies

Hibernate Envers - Why Query API perform sub-queries for DefaultAuditStrategy

1 week ago 0 replies

JPA starter

1 month ago 4 replies

JPA newbie question

1 month ago 7 replies

Hibernate Mapping Issue in Many to Many Relationship

1 month ago 2 replies

Integer versus int

1 month ago 6 replies

Hibernate: persist an object containing a list with more objects

1 month ago 3 replies

ORA-19032: Expected XML tag, got no content

2 months ago 1 reply

hibernate insert a row that already exists in the database

2 months ago 1 reply

Ibatis join by object instead of by id

2 months ago 0 replies

hibernate : OOD for text base elements

2 months ago 1 reply

JPA where can I put my cardinalities

2 months ago 3 replies

Spring

Hibernate does not see manually inserted data

2 months ago 3 replies

@SqlResultMapping - Could not locate approprate constructor class

2 months ago 2 replies

Object Relational Mapping

Is composite-primary key the best solution - Hibernate Spring

3 months ago 7 replies

Java in General

Creating a JPA (Hibernate) proxy and set the Primary key later

3 months ago 0 replies

Problem with hibernate-configuration and session

3 months ago 2 replies

Could not load minecraft plugin: NoClassDefFoundError

3 months ago 2 replies

orphan child for Many To Many mappings

3 months ago 0 replies

Multiple representations of the same entity are are being merged

3 months ago 4 replies

SessionHolder cannot be cast to EntityManagerHolder problem

3 months ago 2 replies

hibernate : data layer separate from object layer

3 months ago 2 replies

Hibernate one to many mapping with foreign key association

3 months ago 0 replies

Java in General

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

3 months ago 1 reply

Hibernate ENVERS AuditQuery returns only parts of the entity

3 months ago 3 replies

Hibernate sessionFactory is null

3 months ago 3 replies

Beginning Java

Hibernate shenanigans

3 months ago 5 replies

Object Relational Mapping

Criteria builder and Path..How to compare dates column

3 months ago 0 replies

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

4 months ago 10 replies

how to display the ? values in HQL

4 months ago 2 replies

Custom Bean Validation never executed

4 months ago 4 replies

Entity is not mapped

4 months ago 3 replies

Could not execute Hibernate statement

4 months 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

Integer versus int

JPA newbie question

HQL Query to return the single most recent record, but looking at two (not one) date columns

JPA starter

How many records are saved in Hibernate cache?

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

Best Practices - Strategy - Versions

Hibernate Mapping Issue in Many to Many Relationship

Hibernate Envers - Why Query API perform sub-queries for DefaultAuditStrategy

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

Best this month

HQL Query to return the single most recent record, but looking at two (not one) date columns

How many records are saved in Hibernate cache?

Best Practices - Strategy - Versions

Hibernate Envers - Why Query API perform sub-queries for DefaultAuditStrategy

Object Relational Mapping Forum at JavaRanch

HQL Query to return the single most recent record, but looking at two (not one) date columns

How many records are saved in Hibernate cache?

Best Practices - Strategy - Versions

Hibernate Envers - Why Query API perform sub-queries for DefaultAuditStrategy

JPA starter

JPA newbie question

Hibernate Mapping Issue in Many to Many Relationship

Integer versus int

Hibernate: persist an object containing a list with more objects

ORA-19032: Expected XML tag, got no content

hibernate insert a row that already exists in the database

Ibatis join by object instead of by id

hibernate : OOD for text base elements

JPA where can I put my cardinalities

Hibernate does not see manually inserted data

@SqlResultMapping - Could not locate approprate constructor class

Is composite-primary key the best solution - Hibernate Spring

Creating a JPA (Hibernate) proxy and set the Primary key later

Problem with hibernate-configuration and session

Could not load minecraft plugin: NoClassDefFoundError

orphan child for Many To Many mappings

Multiple representations of the same entity are are being merged

SessionHolder cannot be cast to EntityManagerHolder problem

hibernate : data layer separate from object layer

Hibernate one to many mapping with foreign key association

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

Hibernate ENVERS AuditQuery returns only parts of the entity

Hibernate sessionFactory is null

Hibernate shenanigans

Criteria builder and Path..How to compare dates column

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

how to display the ? values in HQL

Custom Bean Validation never executed

Entity is not mapped

Could not execute Hibernate statement

Databases