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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

Object Relational Mapping

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Object Relational Mapping

Is it necessary to execute refresh after an respository save?

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More »
Best this month

Not able to catch ConstraintViolationException in Hibernate

10 replies

Converting database format to java

5 replies

HQL insert syntax to insert "nested object"

5 replies

HQL insert syntax to insert "nested object"

0 replies

More »
Object Relational Mapping Forum at JavaRanch

HQL insert syntax to insert "nested object"

6 days ago 5 replies

Not able to catch ConstraintViolationException in Hibernate

2 weeks ago 10 replies

Converting database format to java

2 weeks ago 5 replies

Object Relational Mapping

Why does Eclipse not show Hibernate Query Results properties?

1 month ago 3 replies 1

When all columns of an @Embedded field are NULL (JPA / Hibernate)

1 month ago 2 replies

Right way to persist unique values in ManyToMany relations

2 months ago 0 replies

Persism 2.2.0 released - A Lightweight ORM for Java

2 months ago 0 replies

Getting rid of special characters in TOAD commands

3 months ago 5 replies

Connect/Sync mysql data realtime to sharepoint after data is added

3 months ago 3 replies

How to Read dynamically from datasource in c#

4 months ago 1 reply

Deleted records from database by JPA

5 months ago 5 replies

ManyToOne on Child Entities Only

5 months ago 4 replies

how to identify uicode columns in ORACLE

6 months ago 2 replies

Hibernate Interview Questions

6 months ago 17 replies

NetBeans

Can I delete entity class and create new one after changes

6 months ago 4 replies

Hibernate 6

7 months ago 0 replies

JPQL Constructor Expression case when Enum Literal

8 months ago 3 replies

Persism ORM Release 2.1.0 - with support for Table Joins!

8 months ago 0 replies

Want to track how long Hibernate session is using DB connection from JDBC connection pool

8 months ago 3 replies

SQL BCNF

8 months ago 0 replies

Getting record during batch insertion

9 months ago 0 replies

How to convert this mysql query to JPA Query?

10 months ago 6 replies

JSF

JSF page is not displaying the mysql records in primefaces datatable.

10 months ago 33 replies 3

Object Relational Mapping

Is it necessary to execute refresh after an respository save?

10 months ago 1 reply

Java in General

How to make a Join with JPQL, to search in a column of an Jointable?

10 months ago 12 replies

JAVA Illegal attempt to associate a collection with two open sessions. Collection

10 months ago 14 replies

Looking for Sample Project

11 months ago 3 replies

Blatant Advertising

Persism and the SELECT N+1 problem

11 months ago 0 replies

Blatant Advertising

Persism 2.0.0 Released - A zero ceremony ORM for Java

1 year ago 0 replies

To Hibernate or Not?

1 year ago 15 replies

Unable to resolve name [org.hibernate.dialect.MySQlDialect]

1 year ago 1 reply

Suggest a book on RDBMS concepts

1 year ago 7 replies

ERROR OneTOMany/ManyToOne mapping: FK null at time of saving parent - child table

1 year ago 3 replies

javax.persistence.PersistenceException: No Persistence provider for EntityManager

2 years ago 5 replies
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Object Relational Mapping

Best this year

JSF page is not displaying the mysql records in primefaces datatable.

Not able to catch ConstraintViolationException in Hibernate

JAVA Illegal attempt to associate a collection with two open sessions. Collection

Converting database format to java

HQL insert syntax to insert "nested object"

Why does Eclipse not show Hibernate Query Results properties?

Getting rid of special characters in TOAD commands

Deleted records from database by JPA

ManyToOne on Child Entities Only

how to identify uicode columns in ORACLE

Connect/Sync mysql data realtime to sharepoint after data is added

How to Read dynamically from datasource in c#

HQL insert syntax to insert "nested object"

Want to track how long Hibernate session is using DB connection from JDBC connection pool

How to convert this mysql query to JPA Query?

Can I delete entity class and create new one after changes

Right way to persist unique values in ManyToMany relations

Persism 2.2.0 released - A Lightweight ORM for Java

Hibernate 6

Is it necessary to execute refresh after an respository save?

Best this month

Not able to catch ConstraintViolationException in Hibernate

Converting database format to java

HQL insert syntax to insert "nested object"

HQL insert syntax to insert "nested object"

Object Relational Mapping Forum at JavaRanch

HQL insert syntax to insert "nested object"

Not able to catch ConstraintViolationException in Hibernate

Converting database format to java

Why does Eclipse not show Hibernate Query Results properties?

When all columns of an @Embedded field are NULL (JPA / Hibernate)

Right way to persist unique values in ManyToMany relations

Persism 2.2.0 released - A Lightweight ORM for Java

Getting rid of special characters in TOAD commands

Connect/Sync mysql data realtime to sharepoint after data is added

How to Read dynamically from datasource in c#

Deleted records from database by JPA

ManyToOne on Child Entities Only

how to identify uicode columns in ORACLE

Hibernate Interview Questions

Can I delete entity class and create new one after changes

Hibernate 6

JPQL Constructor Expression case when Enum Literal

Persism ORM Release 2.1.0 - with support for Table Joins!

Want to track how long Hibernate session is using DB connection from JDBC connection pool

SQL BCNF

Getting record during batch insertion

How to convert this mysql query to JPA Query?

JSF page is not displaying the mysql records in primefaces datatable.

Is it necessary to execute refresh after an respository save?

How to make a Join with JPQL, to search in a column of an Jointable?

JAVA Illegal attempt to associate a collection with two open sessions. Collection

Looking for Sample Project

Persism and the SELECT N+1 problem

Persism 2.0.0 Released - A zero ceremony ORM for Java

To Hibernate or Not?

Unable to resolve name [org.hibernate.dialect.MySQlDialect]

Suggest a book on RDBMS concepts

ERROR OneTOMany/ManyToOne mapping: FK null at time of saving parent - child table

javax.persistence.PersistenceException: No Persistence provider for EntityManager

Databases