ObjectDB ObjectDB

Internal Website Search

21-30 of 200 resultsRefresh
39

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 ... is to use queries. The official query language of JPA is JPQL (Java Persistence Query Language
39

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
39

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
39

Updating JPA Entity Objects

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.
39

Chapter 4 - JPA Queries (JPQL / Criteria)

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
7

Eclipse/JPA Spring MVC Web Tutorial

This is the Eclipse version of the Spring MVC and JPA tutorial. It demonstrates how to create and run a full Java Spring MVC (Model View Controller) web application in Eclipse - using ObjectDB, JPA ... are listed below the form: Persistence is managed by JPA. Every visitor that has signed the guestbook
7

NetBeans/JPA Spring MVC Web Tutorial

This is the NetBeans version of the Spring MVC and JPA tutorial. It demonstrates how to create and run a full Java Spring MVC (Model View Controller) web application in NetBeans - using JPA, ObjectDB ... are listed below the form: Persistence is managed by JPA. Every visitor that has signed the guestbook
7

JPA Web App Tutorial - Maven Project

The JPA Web Application tutorial provides step by step instructions on how to build a simple Java/JPA database driven web application (for Tomcat / Jetty) in Eclipse or NetBeans. Building a new ... the result application as a Maven project: JPA Web App - Maven Project (6KB) If Maven is installed
7

Spring MVC and JPA Tutorial

application using Tomcat (or GlassFish), JPA, ObjectDB and Maven. The demo web application manages ... that have already signed are listed below the form: Persistence is managed by JPA. Every visitor that has signed the guestbook is represented as Guest JPA entity object, and all Guest entity objects
7

Getting Started with JPA and Eclipse

This is the Eclipse version of the Quick Start with JPA tutorial. It demonstrates how to create and run a simple JPA application in Eclipse. The demonstrated application uses JPA to store and retrieve simple Point entity objects, where each Point has two persistent fields: x and y

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support