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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

How do you Map String Array to JPA ?

10 replies 1

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

int vs Integer for JPA entity's Id field?

10 replies

Object Relational Mapping

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

9 replies

Join query and hibernate 3

10 replies

Object Relational Mapping

Generate portable SQL statements

15 replies

Object Relational Mapping

Why use JPA over Hibernate?

11 replies

Object Relational Mapping

Hibernate and JPA Book Reccomendations

3 replies

JPA, one-to-many list is always null

13 replies

How to show Result from combined two tables by hibernate?

19 replies

Complex MyBatis Mapping - Annotations vs XML File

2 replies

The debug process for PersistenceException

3 replies

Custom EclipseLink ExceptionHandler

0 replies

Object Relational Mapping

java]org.hibernate.hql.internal.ast.QuerySyntaxException: Path expected for join!

2 replies

Microsoft Sql + Hibernate 3.0 + jboss 7 executeUpdate not reflecting

1 reply

Object Relational Mapping

JEE CRUD Application

2 replies

Hibernate/C3PO Not Automatically Restoring Lost Connections

1 reply

Hibernate ResultTransformer returning null values for all columns except @Id column

1 reply

Object Relational Mapping

org.apache.tomcat.dbcp cannot be cast to oracle.jdbc.OracleConnection when using eclipselink JPA

4 replies

More »
Best this month

int vs Integer for JPA entity's Id field?

10 replies

Complex MyBatis Mapping - Annotations vs XML File

2 replies

The debug process for PersistenceException

3 replies

Object Relational Mapping

java]org.hibernate.hql.internal.ast.QuerySyntaxException: Path expected for join!

2 replies

Microsoft Sql + Hibernate 3.0 + jboss 7 executeUpdate not reflecting

1 reply

Hibernate/C3PO Not Automatically Restoring Lost Connections

1 reply

Hibernate ResultTransformer returning null values for all columns except @Id column

1 reply

Experiencing Some difficulties with Hibernate

0 replies

hibernate 3 to hibernate 4

0 replies

More »
Object Relational Mapping Forum at JavaRanch

JPA: is @PrimaryKeyJoinColumn(…) the same as @JoinColumn(…, insertable = ?, updatable = ?)?

7 years ago 2 replies

Join Query

7 years ago 2 replies

Collection is not associated with any session

7 years ago 0 replies

Does hibernate save use bind variables?

7 years ago 0 replies

Configure Java--->Hibernate--->MySql in Eclipse.

7 years ago 0 replies

mapping problem

7 years ago 7 replies

The chosen transaction strategy requires access to the JTA TransactionManager

7 years ago 0 replies

Running unit tests and getting NoSuchMethodError: javax.persistence.OneToMany.orphanRemoval()Z

7 years ago 0 replies

Escape HQL Like special characters

7 years ago 5 replies

hibernate Distinct + order by criteria

7 years ago 0 replies

Hibernate configuration class

7 years ago 2 replies

concurrent insertion

7 years ago 5 replies

Hi everyone this is my very first post so please ignore any mistakes and let me know if any

7 years ago 1 reply

EJB & JPA Unexpected Results

7 years ago 5 replies

How to Create Auto Schema

7 years ago 21 replies

client and server sharing same database - stale data problem

7 years ago 4 replies

Beginner needs help with updating PK

7 years ago 2 replies

Hibernate Repeated column mapping problem

7 years ago 4 replies

Mapping two Hibernate Object based on their foriegn keys

7 years ago 6 replies

"hibernate.hbm2ddl.auto">create - to generate DB Tables

7 years ago 11 replies

is it possible to persist an ArrayList of POJO into database in hibernate?

7 years ago 10 replies

Hibernate over Jdbc

7 years ago 2 replies

Non-disjoint inheritance?

7 years ago 2 replies

Error running Hibernate query in a distributed environment

7 years ago 0 replies

Data Not inserting into Database JPA+Hibernate

7 years ago 11 replies

Dealing with composite primary keys

7 years ago 2 replies

How to insert DateTime with HQL

7 years ago 6 replies

Why one-to-one mapping tag is not used in one-to-one relationship while many-to-one is used ?

7 years ago 1 reply

Creating Tables Automatically with Hibernate and JPA

7 years ago 4 replies

JPA and mapping result sets to POJO:s

7 years ago 1 reply

TypedQuery in JPA?

7 years ago 1 reply

EclipseLink inheritance bug?: super class instantiated instead of sub class

7 years ago 3 replies

Hibernate search using Lucene

7 years ago 0 replies

Connection Error

7 years ago 1 reply

Exception on cascade of remove in a unidirectional @OneToMany

7 years ago 0 replies
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Object Relational Mapping

Best this year

How do you Map String Array to JPA ?

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

which framework is being used most in Persistence Layer?

int vs Integer for JPA entity's Id field?

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

Join query and hibernate 3

Generate portable SQL statements

Why use JPA over Hibernate?

Hibernate and JPA Book Reccomendations

JPA, one-to-many list is always null

How to show Result from combined two tables by hibernate?

Complex MyBatis Mapping - Annotations vs XML File

The debug process for PersistenceException

Custom EclipseLink ExceptionHandler

java]org.hibernate.hql.internal.ast.QuerySyntaxException: Path expected for join!

Microsoft Sql + Hibernate 3.0 + jboss 7 executeUpdate not reflecting

JEE CRUD Application

Hibernate/C3PO Not Automatically Restoring Lost Connections

Hibernate ResultTransformer returning null values for all columns except @Id column

org.apache.tomcat.dbcp cannot be cast to oracle.jdbc.OracleConnection when using eclipselink JPA

Best this month

int vs Integer for JPA entity's Id field?

Complex MyBatis Mapping - Annotations vs XML File

The debug process for PersistenceException

java]org.hibernate.hql.internal.ast.QuerySyntaxException: Path expected for join!

Microsoft Sql + Hibernate 3.0 + jboss 7 executeUpdate not reflecting

Hibernate/C3PO Not Automatically Restoring Lost Connections

Hibernate ResultTransformer returning null values for all columns except @Id column

Experiencing Some difficulties with Hibernate

hibernate 3 to hibernate 4

Object Relational Mapping Forum at JavaRanch

JPA: is @PrimaryKeyJoinColumn(…) the same as @JoinColumn(…, insertable = ?, updatable = ?)?

Join Query

Collection is not associated with any session

Does hibernate save use bind variables?

Configure Java--->Hibernate--->MySql in Eclipse.

mapping problem

The chosen transaction strategy requires access to the JTA TransactionManager

Running unit tests and getting NoSuchMethodError: javax.persistence.OneToMany.orphanRemoval()Z

Escape HQL Like special characters

hibernate Distinct + order by criteria

Hibernate configuration class

concurrent insertion

Hi everyone this is my very first post so please ignore any mistakes and let me know if any

EJB & JPA Unexpected Results

How to Create Auto Schema

client and server sharing same database - stale data problem

Beginner needs help with updating PK

Hibernate Repeated column mapping problem

Mapping two Hibernate Object based on their foriegn keys

"hibernate.hbm2ddl.auto">create - to generate DB Tables

is it possible to persist an ArrayList of POJO into database in hibernate?

Hibernate over Jdbc

Non-disjoint inheritance?

Error running Hibernate query in a distributed environment

Data Not inserting into Database JPA+Hibernate

Dealing with composite primary keys

How to insert DateTime with HQL

Why one-to-one mapping tag is not used in one-to-one relationship while many-to-one is used ?

Creating Tables Automatically with Hibernate and JPA

JPA and mapping result sets to POJO:s

TypedQuery in JPA?

EclipseLink inheritance bug?: super class instantiated instead of sub class

Hibernate search using Lucene

Connection Error

Exception on cascade of remove in a unidirectional @OneToMany

Databases