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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
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Best this year

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

22 replies 2

Object Relational Mapping

which framework is being used most in Persistence Layer?

13 replies

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

3 replies 2

Object Relational Mapping

Flush old data and make query for a new data

5 replies

Object Relational Mapping

MyBatis

11 replies

Squeezing Four HQL Queries Into One

14 replies

int vs Integer for JPA entity's Id field?

10 replies

Object Relational Mapping

How to improve select query speed on Spring with Hibernate and PostgreSQL?

14 replies

Object Relational Mapping

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

9 replies

JPA Criteria API - unintentional CROSS JOIN

4 replies

Object Relational Mapping

HQL Hibernate INNER JOIN SUBQuery

6 replies

Hibernate does not persist my database

7 replies

CSV File returns empty values

3 replies 1

Dealing with database using hibernate

1 reply

create to generate table through hibernate

2 replies 1

hibernate and JPA (cross post from stack exchange)

6 replies

Object Relational Mapping

Question on database design: It's really a hierarchical design

4 replies

Join query and hibernate 3

10 replies

The debug process for PersistenceException

5 replies

JPA foreign key

1 reply

More »
Best this month

JPA Criteria API - unintentional CROSS JOIN

4 replies

Dealing with database using hibernate

1 reply

JPA foreign key

1 reply

Object Relational Mapping

Spring Hibernate Hikari CP

0 replies

Object Relational Mapping

JPA same sequence for two applications not working

0 replies

Primary key generation in Hibernate

0 replies

More »
Object Relational Mapping Forum at JavaRanch

Questions about LAZY and EAGER loading (JPA 1.0)

7 years ago 5 replies

Dynamic Datasource Routing

7 years ago 2 replies

Hibernate Annotation: Many-to-many JoinTable with 3 Tables

7 years ago 0 replies

org.hibernate.NonUniqueObjectException

7 years ago 0 replies

Error in reverse engineering from an existing database

7 years ago 1 reply

New value is inserted into db in @ManyToOne relation instead of update

7 years ago 3 replies

JBoss hangs at Hibernate initialisation

7 years ago 1 reply

code review: JPA criteria

7 years ago 0 replies

Can <jar-file> inside persistence.xml be used in .war apps?

7 years ago 0 replies

Learning Hibernate

7 years ago 7 replies

cascade vs inverse

7 years ago 2 replies

Subselect joins

7 years ago 0 replies

uses a non-entity as target entity in relationship attribute

7 years ago 20 replies

Clarification on Relationship Example Needed

7 years ago 1 reply

MySql query redesign to JPA query

7 years ago 0 replies

Hibernate: Running a query using an object

7 years ago 1 reply

Error with <many-to-one> mapping

7 years ago 5 replies

"Cascade=delete" issue in many-to-one tag.

7 years ago 0 replies

Dateformat problem in iBatis

7 years ago 3 replies

onetomany manytoone bidrectional mapping

7 years ago 1 reply

problem in one-to-many mapping

7 years ago 4 replies

Dateformat problem in iBatis

7 years ago 0 replies

Persisting non-entities

7 years ago 2 replies

memory leak in spring-hibernate application

7 years ago 2 replies

ClassCastException Hibernate

7 years ago 3 replies

Heap Space

7 years ago 15 replies

How EntityManager flush

7 years ago 3 replies

using hibernaet validator

7 years ago 0 replies

EJB3 JPA entities OntoMAny two jar

7 years ago 3 replies

Hibernate one-to-many, one-to-one association not selecting records without children

7 years ago 1 reply

delete option of cascade in Hibernate one-to-one association

7 years ago 3 replies

OrderBy with ElementCollection doesn't work

7 years ago 2 replies

EHCache Server locking

7 years ago 1 reply

HQL: illegal attempt to dereference collection

7 years ago 3 replies

Hibernate Reverse Engineering: Generation of a <component>-tag

7 years ago 1 reply
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Object Relational Mapping

Best this year

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

which framework is being used most in Persistence Layer?

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

Flush old data and make query for a new data

MyBatis

Squeezing Four HQL Queries Into One

int vs Integer for JPA entity's Id field?

How to improve select query speed on Spring with Hibernate and PostgreSQL?

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

JPA Criteria API - unintentional CROSS JOIN

HQL Hibernate INNER JOIN SUBQuery

Hibernate does not persist my database

CSV File returns empty values

Dealing with database using hibernate

create to generate table through hibernate

hibernate and JPA (cross post from stack exchange)

Question on database design: It's really a hierarchical design

Join query and hibernate 3

The debug process for PersistenceException

JPA foreign key

Best this month

JPA Criteria API - unintentional CROSS JOIN

Dealing with database using hibernate

JPA foreign key

Spring Hibernate Hikari CP

JPA same sequence for two applications not working

Primary key generation in Hibernate

Object Relational Mapping Forum at JavaRanch

Questions about LAZY and EAGER loading (JPA 1.0)

Dynamic Datasource Routing

Hibernate Annotation: Many-to-many JoinTable with 3 Tables

org.hibernate.NonUniqueObjectException

Error in reverse engineering from an existing database

New value is inserted into db in @ManyToOne relation instead of update

JBoss hangs at Hibernate initialisation

code review: JPA criteria

Can <jar-file> inside persistence.xml be used in .war apps?

Learning Hibernate

cascade vs inverse

Subselect joins

uses a non-entity as target entity in relationship attribute

Clarification on Relationship Example Needed

MySql query redesign to JPA query

Hibernate: Running a query using an object

Error with <many-to-one> mapping

"Cascade=delete" issue in many-to-one tag.

Dateformat problem in iBatis

onetomany manytoone bidrectional mapping

problem in one-to-many mapping

Dateformat problem in iBatis

Persisting non-entities

memory leak in spring-hibernate application

ClassCastException Hibernate

Heap Space

How EntityManager flush

using hibernaet validator

EJB3 JPA entities OntoMAny two jar

Hibernate one-to-many, one-to-one association not selecting records without children

delete option of cascade in Hibernate one-to-one association

OrderBy with ElementCollection doesn't work

EHCache Server locking

HQL: illegal attempt to dereference collection

Hibernate Reverse Engineering: Generation of a <component>-tag

Databases