Welcome to Onami-Persist!
Apache Onami Persistence is a Google Guice extension for JPA with support of container managed persistence units and transactions..
Before starting
Onami-Persist is available on the Maven Central repo, you just need to add the dependency below in your pom.xml file:
<dependencies>
...
<dependency>
<groupId>org.apache.onami</groupId>
<artifactId>org.apache.onami.persist</artifactId>
<version>1.0.1</version>
</dependency>
...
</dependencies>Why Onami-Persist
The official guice extension guice-persist allows to configure and inject a persistence unit into your classes. Guice-persist assumes that only one persistence unit is used in an application and that this persistence unit is application managed. Onami-Persist overcomes this shortcoming.
It supports:
- multiple persistence units
- application manged and container managed persistence units
- resource local and JTA transactions.
Overview
Here you find a sample code of how a DAO or service may look if it uses guice-jpa
If you have used guice-persist before you may be interested in the differences between guice-jpa and guice-persist.
The most difficult part to get right is the configuration and setup of the persistence unit. Some examples are provided: