About JPA

21-30 of 200Refresh
Result
101

ObjectDB - Object Database for Java (JPA/JDO) [2017-10-19]

for developing Java database applications using the Java Persistence API (JPA). It is the first persistence solution that combined a powerful database with JPA support in one product, saving the need to integrate an external JPA ORM with a database. ObjectDB is an extremely easy to use pure Java Object
Manual
101

JPA Entity Fields

either the Java transient modifier (which also affects serialization) or the JPA @Transient annotation ... and maps of entity types. Basic - for any other persistable type. In JPA only Basic is optional ... of these annotations, so they are useful only for classes that are also in use with an ORM JPA
Manual
101

CRUD Database Operations with JPA [2011-02-11]

Given an EntityManager, em, that represents a JPA connection to the object database, we can use ... persisting objects in the database in more detail. JPA Queries with JPQL We can get the number of Point ... COUNT(p) FROM Point p") instructs JPA to count all the Point objects in the database. If you have used
Manual
101

CRUD Database Operations with JPA

Given an EntityManager, em, that represents a JPA connection to the object database, we can use ... persisting objects in the database in more detail. JPA Queries with JPQL We can get the number of Point ... COUNT(p) FROM Point p") instructs JPA to count all the Point objects in the database. If you have used
Manual
101

JPA Persistable Types

. ObjectDB supports all the JPA persistable types, which are: User defined classes - Entity classes ... ; @Entity public class MyEntity { } Entity Class Requirements A portable JPA entity class ... Superclasses In JPA, classes that are declared as mapped superclasses have some of the features of entity
Manual
100

Setting and Tuning of JPA Queries

of other EntityManager instances). JPA implementations can easily make uncommitted changes visible in simple JPA operations, such as find. However, query execution is much more complex ... order to be visible to the query. Flush policy in JPA is represented by the FlushModeType enum
JPA Doc
100

JPA 2 Annotations

JPA defines dozens of annotations that can be divided into the following groups: Annotations for JPA aware classes: Annotations for fields in JPA persistable classes: Annotations for additional JPA configuration: Annotations for JPA lifecycle event callbacks: Java EE container annotations: Many
Manual
100

Defining a JPA Entity Class [2011-02-11]

To be able to store Point objects in the database using JPA we need to define an entity class. A JPA entity class is a POJO (Plain Old Java Object) class, i.e. an ordinary Java class that is marked ... JPA addition is the @Entity annotation, which marks the class as an entity class. An attempt
Manual
100

Defining a JPA Entity Class [2018-10-20]

To be able to store Point objects in the database using JPA we need to define an entity class. A JPA entity class is a POJO (Plain Old Java Object) class, i.e. an ordinary Java class that is marked ... JPA addition is the @Entity annotation, which marks the class as an entity class. An attempt
JPA Doc
99

JPA Reference (JavaDoc) [2018-08-18]

This reference contains the API documentation (similar to JavaDoc) of the Java Persistence API (JPA) 2.0. The content is derived from the original JPA documentation (in the EclipseLink JPA 2 RI) with some additions and notes. The four most basic JPA types are: All the other JPA types are organized