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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.

21 replies 2

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

3 replies 2

Object Relational Mapping

which framework is being used most in Persistence Layer?

12 replies

Object Relational Mapping

MyBatis

11 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

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

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

Object Relational Mapping

Flush old data and make query for a new data

4 replies

Object Relational Mapping

Generate portable SQL statements

15 replies

Object Relational Mapping

Why use JPA over Hibernate?

11 replies

what is owner entity and parent entity in hibernate jpa?

2 replies

org.hibernate.exception.SQLGrammarException: could not extract ResultSet

5 replies 2

More »
Best this month

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

21 replies 2

Hibernate does not persist my database

7 replies

create to generate table through hibernate

2 replies 1

Object Relational Mapping

One-to-one mapping in hibernate

1 reply

Hibernate configuration

0 replies

iBatis sqlMap with different database

0 replies

More »
Object Relational Mapping Forum at JavaRanch

Netbeans Help

3 years ago 5 replies

Mapping issues when migrating from Hibernate 4.3 to 5.0.2.final

3 years ago 5 replies 1

access denied connecting Amazon RDS-Mysql from local Spring-JPA application

3 years ago 2 replies

Bad Design leading to Bad Performance as data grows

3 years ago 7 replies

JPA - Projecting a single unique field.

3 years ago 1 reply

What is the use of @forcediscriminator ?

3 years ago 5 replies

How does a native sql query bind fields to an entity instead of map (result transformer issue)

3 years ago 0 replies

Hibernate - slow at startup/mapping

3 years ago 4 replies

JPA Class cast exception for same class

3 years ago 5 replies

objects are cached

3 years ago 0 replies

How To Solved : "org.hibernate.exception.SQLGrammarException: could not execute query"

3 years ago 4 replies

Hibernate referencing abstract entity for constraints

3 years ago 9 replies

Single mapping thousand schemas at Hibernate: Suitable and how to?

3 years ago 1 reply

How to use jdo schematool to find the difference in jdo.mapping and the actual database?

3 years ago 0 replies

Need help designing joined table

3 years ago 15 replies

org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0];

3 years ago 2 replies

How to connect to pluggable database in Oracle 12c using Hibernate?

3 years ago 1 reply

Hibernate: Confusion about lazy/eager fetching and preventing LazyInitializationException

3 years ago 8 replies

How to get updated data for many to many mappings in Hibernate

3 years ago 1 reply

Hibernate 5.0.0 - Mapping in hibernate.cfg.xml ignored?

3 years ago 2 replies

Hibernate-MySQL bug

3 years ago 4 replies

What does @CollectionTable do ?

3 years ago 3 replies

Hibernate OneToMany with ORA-02291 error

3 years ago 3 replies

Fetching user posts with pagination

3 years ago 2 replies

Hibernate creating entites not listed in persistence.xml

3 years ago 0 replies

JPA 2: composite primary key classes

3 years ago 5 replies

How to retrieve a hibernate object with composite key

3 years ago 4 replies

When to use dirty checking option and when not to use it?

3 years ago 2 replies

IllegalArgumentException when calling getter of persisted object ID in Hibernate.

3 years ago 0 replies

What does @ElementCollection with @Column mean ?

3 years ago 3 replies

Replacement of KODO with OpenJPA 1.0

3 years ago 2 replies

Where are tutorial source code located for Hibernate ?

3 years ago 6 replies

please recommend a Hibernate manuaal

3 years ago 1 reply

Server Side changes to persist “Browser View” CheckBox value in DB

3 years 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.

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

which framework is being used most in Persistence Layer?

MyBatis

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

HQL Hibernate INNER JOIN SUBQuery

Hibernate does not persist my database

CSV File returns empty values

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

Flush old data and make query for a new data

Generate portable SQL statements

Why use JPA over Hibernate?

what is owner entity and parent entity in hibernate jpa?

org.hibernate.exception.SQLGrammarException: could not extract ResultSet

Best this month

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

Hibernate does not persist my database

create to generate table through hibernate

One-to-one mapping in hibernate

Hibernate configuration

iBatis sqlMap with different database

Object Relational Mapping Forum at JavaRanch

Netbeans Help

Mapping issues when migrating from Hibernate 4.3 to 5.0.2.final

access denied connecting Amazon RDS-Mysql from local Spring-JPA application

Bad Design leading to Bad Performance as data grows

JPA - Projecting a single unique field.

What is the use of @forcediscriminator ?

How does a native sql query bind fields to an entity instead of map (result transformer issue)

Hibernate - slow at startup/mapping

JPA Class cast exception for same class

objects are cached

How To Solved : "org.hibernate.exception.SQLGrammarException: could not execute query"

Hibernate referencing abstract entity for constraints

Single mapping thousand schemas at Hibernate: Suitable and how to?

How to use jdo schematool to find the difference in jdo.mapping and the actual database?

Need help designing joined table

org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0];

How to connect to pluggable database in Oracle 12c using Hibernate?

Hibernate: Confusion about lazy/eager fetching and preventing LazyInitializationException

How to get updated data for many to many mappings in Hibernate

Hibernate 5.0.0 - Mapping in hibernate.cfg.xml ignored?

Hibernate-MySQL bug

What does @CollectionTable do ?

Hibernate OneToMany with ORA-02291 error

Fetching user posts with pagination

Hibernate creating entites not listed in persistence.xml

JPA 2: composite primary key classes

How to retrieve a hibernate object with composite key

When to use dirty checking option and when not to use it?

IllegalArgumentException when calling getter of persisted object ID in Hibernate.

What does @ElementCollection with @Column mean ?

Replacement of KODO with OpenJPA 1.0

Where are tutorial source code located for Hibernate ?

please recommend a Hibernate manuaal

Server Side changes to persist “Browser View” CheckBox value in DB

Databases