Revision: 1295
Author: dhanji
Date: Sun Oct 17 19:20:45 2010
Log: Edited wiki page JPA through web user interface.
http://code.google.com/p/google-guice/source/detail?r=1295
Modified:
/wiki/JPA.wiki
=======================================
--- /wiki/JPA.wiki Thu Sep 16 14:43:28 2010
+++ /wiki/JPA.wiki Sun Oct 17 19:20:45 2010
@@ -9,7 +9,7 @@
To enable persistence support, simply install the JPA module:
{{{
-Injector injector = Guice.createInjector(..., new
JpaModule("myFirstJpaUnit"));
+Injector injector = Guice.createInjector(..., new
JpaPersistModule("myFirstJpaUnit"));
}}}
In JPA, you specify your configuration in a *persistence.xml* file in the
`META-INF` folder of that is available on the classpath (if inside a jar,
then at the root for example). In this file you declare several
_Persistence Units_ that are roughly different profiles (for example,
backed by different databases). Here is an example of a simple JPA
configuration:
@@ -39,7 +39,7 @@
To tell Guice Persist which persistence unit you wish you use, you specify
its name when creating your module:
{{{
-Injector injector = Guice.createInjector(..., new
JpaModule("myFirstJpaUnit"));
+Injector injector = Guice.createInjector(..., new
JpaPersistModule("myFirstJpaUnit"));
}}}
Finally, you must decide when the persistence service is to be started by
invoking `start()` on `PersistService`. I typically use a simple
initializer class that I can trigger at a time of my choosing:
@@ -94,7 +94,7 @@
{{{
public class MyModule extends ServletModule {
protected void configureServlets() {
- install(new JpaModule("myJpaUnit")); // like we saw earlier.
+ install(new JpaPersistModule("myJpaUnit")); // like we saw earlier.
filter("/*").through(PersistFilter.class);
}
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