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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

When normalizing a table, how do you decide where to move fields that are not dependent to the PK?

9 replies 1

Question on updating a record using hibernate

9 replies

Oracle Live Invalid Table Name

11 replies 2

Hibernate: org.hibernate.StaleObjectStateException:Row was updated or deleted by another transaction

3 replies

Object Relational Mapping

failed to lazily initialize a collection of role could not initialize proxy - no Session

13 replies

NullPointerException Cannot invoke "java.lang.Integer.intValue()"

17 replies

What are these SQL words?

8 replies 1

The import javax.persistence cannot be resolved

6 replies

Object Relational Mapping

OneToOne relationship in java

10 replies

Does anyone know HOW to call stored procedure with custom type from jpa/hibernate?

11 replies

Object Relational Mapping

Converting to hibernate with jpa

5 replies

Trying to understand the sequence part in Hibernate Mapping

5 replies

Object Relational Mapping

Mapstruct, service, controller - Send nested entity having (many-to-one relation) in the request

3 replies

Object Relational Mapping

Oracle Create Schema - What do I use for authorization?

3 replies

Oracle Live SQL - Can I add Tables to a schema after the table already exists?

3 replies

Cannot seem to create the database on BaseX 10.5 properly using an XML file, any help?

5 replies 1

while migrate toplink to eclipse link without using JPA concept

1 reply

Save either a new or detached child object using Spring JPA and Hibernate

1 reply

Can anyone bring an example of a Hibernate session/unit of work in which session cache is useful?

1 reply

Object Relational Mapping

How to implement a property in a Java class Country (implements SQLData) mappeable to nested table?

0 replies

More »
Best this month

The import javax.persistence cannot be resolved

6 replies

Does anyone know HOW to call stored procedure with custom type from jpa/hibernate?

11 replies

More »
Object Relational Mapping Forum at JavaRanch

The import javax.persistence cannot be resolved

2 days ago 6 replies

Does anyone know HOW to call stored procedure with custom type from jpa/hibernate?

2 weeks ago 11 replies

Trying to understand the sequence part in Hibernate Mapping

4 months ago 5 replies

Question on updating a record using hibernate

4 months ago 9 replies

Object Relational Mapping

failed to lazily initialize a collection of role could not initialize proxy - no Session

4 months ago 13 replies

NullPointerException Cannot invoke "java.lang.Integer.intValue()"

5 months ago 17 replies

Spring

Mapstruct, service, controller - Send nested entity having (many-to-one relation) in the request

5 months ago 3 replies

Object Relational Mapping

Converting to hibernate with jpa

5 months ago 5 replies

while migrate toplink to eclipse link without using JPA concept

5 months ago 1 reply

What are these SQL words?

6 months ago 8 replies 1

Cannot seem to create the database on BaseX 10.5 properly using an XML file, any help?

7 months ago 5 replies 1

Oracle Live Invalid Table Name

8 months ago 11 replies 2

Can anyone bring an example of a Hibernate session/unit of work in which session cache is useful?

8 months ago 1 reply

Save either a new or detached child object using Spring JPA and Hibernate

9 months ago 1 reply

Oracle Live SQL - Can I add Tables to a schema after the table already exists?

9 months ago 3 replies

JDBC and Relational Databases

Oracle Create Schema - What do I use for authorization?

9 months ago 3 replies

Object Relational Mapping

How to implement a property in a Java class Country (implements SQLData) mappeable to nested table?

9 months ago 0 replies

When normalizing a table, how do you decide where to move fields that are not dependent to the PK?

10 months ago 9 replies 1

Object Relational Mapping

OneToOne relationship in java

11 months ago 10 replies

Hibernate: org.hibernate.StaleObjectStateException:Row was updated or deleted by another transaction

11 months ago 3 replies

HQL insert syntax to insert "nested object"

1 year ago 5 replies

Not able to catch ConstraintViolationException in Hibernate

1 year ago 10 replies

Converting database format to java

1 year ago 5 replies

Object Relational Mapping

Why does Eclipse not show Hibernate Query Results properties?

1 year ago 3 replies 1

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

1 year ago 2 replies

Right way to persist unique values in ManyToMany relations

1 year ago 0 replies

Persism 2.2.0 released - A Lightweight ORM for Java

1 year ago 0 replies

Getting rid of special characters in TOAD commands

1 year ago 5 replies

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

1 year ago 3 replies

How to Read dynamically from datasource in c#

1 year ago 1 reply

Deleted records from database by JPA

1 year ago 5 replies

ManyToOne on Child Entities Only

1 year ago 4 replies

how to identify uicode columns in ORACLE

1 year ago 2 replies

Hibernate Interview Questions

1 year ago 17 replies

NetBeans

Can I delete entity class and create new one after changes

1 year ago 4 replies

Hibernate 6

1 year ago 0 replies

JPQL Constructor Expression case when Enum Literal

1 year ago 3 replies

Persism ORM Release 2.1.0 - with support for Table Joins!

1 year ago 0 replies

javax.persistence.PersistenceException: No Persistence provider for EntityManager

3 years ago 5 replies
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Object Relational Mapping

Best this year

When normalizing a table, how do you decide where to move fields that are not dependent to the PK?

Question on updating a record using hibernate

Oracle Live Invalid Table Name

Hibernate: org.hibernate.StaleObjectStateException:Row was updated or deleted by another transaction

failed to lazily initialize a collection of role could not initialize proxy - no Session

NullPointerException Cannot invoke "java.lang.Integer.intValue()"

What are these SQL words?

The import javax.persistence cannot be resolved

OneToOne relationship in java

Does anyone know HOW to call stored procedure with custom type from jpa/hibernate?

Converting to hibernate with jpa

Trying to understand the sequence part in Hibernate Mapping

Mapstruct, service, controller - Send nested entity having (many-to-one relation) in the request

Oracle Create Schema - What do I use for authorization?

Oracle Live SQL - Can I add Tables to a schema after the table already exists?

Cannot seem to create the database on BaseX 10.5 properly using an XML file, any help?

while migrate toplink to eclipse link without using JPA concept

Save either a new or detached child object using Spring JPA and Hibernate

Can anyone bring an example of a Hibernate session/unit of work in which session cache is useful?

How to implement a property in a Java class Country (implements SQLData) mappeable to nested table?

Best this month

The import javax.persistence cannot be resolved

Does anyone know HOW to call stored procedure with custom type from jpa/hibernate?

Object Relational Mapping Forum at JavaRanch

The import javax.persistence cannot be resolved

Does anyone know HOW to call stored procedure with custom type from jpa/hibernate?

Trying to understand the sequence part in Hibernate Mapping

Question on updating a record using hibernate

failed to lazily initialize a collection of role could not initialize proxy - no Session

NullPointerException Cannot invoke "java.lang.Integer.intValue()"

Mapstruct, service, controller - Send nested entity having (many-to-one relation) in the request

Converting to hibernate with jpa

while migrate toplink to eclipse link without using JPA concept

What are these SQL words?

Cannot seem to create the database on BaseX 10.5 properly using an XML file, any help?

Oracle Live Invalid Table Name

Can anyone bring an example of a Hibernate session/unit of work in which session cache is useful?

Save either a new or detached child object using Spring JPA and Hibernate

Oracle Live SQL - Can I add Tables to a schema after the table already exists?

Oracle Create Schema - What do I use for authorization?

How to implement a property in a Java class Country (implements SQLData) mappeable to nested table?

When normalizing a table, how do you decide where to move fields that are not dependent to the PK?

OneToOne relationship in java

Hibernate: org.hibernate.StaleObjectStateException:Row was updated or deleted by another transaction

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!

javax.persistence.PersistenceException: No Persistence provider for EntityManager

Databases