About JPA

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Tutorial
129

Getting Started with JPA

This tutorial demonstrates how to create and run a simple JPA application. The demonstrated application uses JPA to store and retrieve simple Point entity objects, where each Point has two persistent fields - x and y. If you already know JPA - the source code will be straightforward
Manual
129

JPA / JDO Class Enhancer [2018-01-25]

(and actually required by JPA but not enforced by ObjectDB) to avoid accessing persistent fields ... : Quick Start with JPA JPA Web Application Java EE JPA Spring MVC and JPA Similarly, enhancement
Manual
129

JPA / JDO Class Enhancer

(and actually required by JPA but not enforced by ObjectDB) to avoid accessing persistent fields ... pages: Quick Start with JPA JPA Web Application Java EE JPA Spring MVC and JPA Similarly, enhancement
Manual
128

Chapter 4 - JPA Queries (JPQL / Criteria) [2011-04-01]

The JPA Query Language (JPQL) can be considered as an object oriented version of SQL. Users ... well as how to use the JPA Criteria API, which provides an alternative way for building queries in JPA, based on JPQL. The first section describes the API that JPA provides for using dynamic and static
Manual
128

Updating JPA Entity Objects [2011-09-24]

classes are in use. It is usually recommended to use collections rather than arrays when using JPA. Collections are more portable to ORM JPA implementations and provide better automatic change tracking ... have to be modified in one operation. The UPDATE Queries in JPA/JPQL in chapter 4 explains how to use JPA UPDATE queries.
Manual
128

Chapter 4 - JPA Queries (JPQL / Criteria) [2018-09-15]

The JPA Query Language (JPQL) can be considered as an object oriented version of SQL. Users ... well as how to use the JPA Criteria API, which provides an alternative way for building queries in JPA, based on JPQL. The first section describes the API that JPA provides for using dynamic and static
Manual
128

Database Connection using JPA

Working with the Java Persistence API (JPA) consists of using the following interfaces: Overview ... for Query instances, which are needed for executing queries on the database. Every JPA implementation ... of ObjectDB classes that implement these interfaces, and because standard JPA interfaces are used
Manual
128

Database Connection using JPA [2011-08-30]

Working with the Java Persistence API (JPA) consists of using the following interfaces: Overview ... for Query instances, which are needed for executing queries on the database. Every JPA implementation ... of ObjectDB classes that implement these interfaces, and because standard JPA interfaces are used
JPA Doc
128

JPA Queries

Queries are represented in JPA by the Query and TypedQuery interfaces: The JPA Query API section (in chapter 4 of the ObjectDB manual) provides detailed explanation of how exactly to use ... concatenating JPQL strings into a valid complete JPQL query. JPA 2 introduced the JPA Criteria Query API, as
Manual
128

Retrieving JPA Entity Objects

The Java Persistence API (JPA) provides various ways to retrieve objects from the database ... that has already been fetched from the database is available in objects that are detached. JPA 2 introduces methods ... queries. The official query language of JPA is JPQL (Java Persistence Query Language). It enables