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Message-ID: <4B76E8B8.9070404@yahoo.gr>
Date: Sat, 13 Feb 2010 20:00:24 +0200
From: Alexandros Karypidis <akarypid@yahoo.gr>
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To: user@geronimo.apache.org
Subject: Re: Container-managed JPA in pure WAR with JNDI
References: <533342.13611.qm@web28604.mail.ukl.yahoo.com>
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Hello David,

Thanks for helping out. Following yout e-mail:

1) I've fixed the problem by using "SystemDatasource" (not 
SystemDatabse) as the name.

2) I don't really care whether Geronimo uses JNDI or not internally. I 
need to register the JPA persistence context in my web application's 
JNDI context, as I am using Spring which expects to be able to look it 
up via JNDI (using <jee:jndi-lookup .../> if you're familiar with 
Spring). So I need the reference in web.xml for my own purposes. Anyway, 
it works now so this has been resolved.

3) I don't really intend to use Derby; I was just taking things 
step-by-step. Having said that, how do I define my own datasource in 
Geronimo? For example, in JBoss you use a "somename-ds.xml" file to 
register a datasource.

On 12/2/2010 8:20 μμ, David Jencks wrote:
> Geronimo doesn't use jndi for the datasources in persistence.xml.  You 
> don't need to configure resource-refs for the datasources.  You do 
> need to make sure they are in ancestor plugins to the app and that you 
> use the name from the datasource configuration.  In this case I think 
> that would be
> <jta-data-source>SystemDatabase</jta-data-source>
>
> In my experience, at least with derby, you need both jta and non-jta 
> datasource.  I guess if you aren't using jta transactions at all you 
> might be able to use just a non-jta-data-source, but I haven't tried 
> this.
>
> thanks
> david jencks
>
> On Feb 12, 2010, at 6:53 AM, Alexandros Karypidis wrote:
>
>> Hello,
>>
>> My scenario is this:
>>
>> I have a library with entities (as in @Entity objects) containing my 
>> domain model. I want to declare a container-managed persistence unit 
>> in a standalone WAR (not EAR), using that library (the 
>> persistence.xml must NOT be in the library, but the WAR). So, I 
>> proceed as follows (this is valid as far as I know, base on J2EE5 
>> specs):
>>
>> 1) I have declared a data source in geronimo-web.xml and web.xml (see 
>> below for file contents).
>> 2) I put my library (as a jar) in my WAR's WEB-INF/lib and added a 
>> WEB-INF/classes/META-INF/persistence.xml in the WAR (see below for 
>> file contents).
>>
>> Deployment after performing step (1) worked and I could see the data 
>> source registered in the console.
>>
>> Deployment after performing step (2) fails; from what I understand 
>> from the error (see below), geronimo claims the data-source from step 
>> (1) does not exist. I assume that geronimo tries to create the 
>> persistence context prior to registering the data source? (i.e. it 
>> processes persistence.xml prior to apply the configuration from 
>> web.xml and geronimo-web.xml).
>>
>> What do I need to configure this properly. My deployment descriptors 
>> and the error trace follow:
>>
>> persistence.xml
>> ------------------------------------------------------------------------------------------------------------------------------------------------- 
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <persistence
>>    xmlns="http://java.sun.com/xml/ns/persistence"
>>    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>>    xsi:schemaLocation="
>> http://java.sun.com/xml/ns/persistence
>> http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
>>    version="1.0">
>> <persistence-unit name="appPersistenceUnit" transaction-type="JTA">
>> <jta-data-source>jdbc/AppDataSource</jta-data-source>
>> <jar-file>app-entities.jar</jar-file>
>> </persistence-unit>
>> </persistence>
>>
>>
>> web.xml
>> ------------------------------------------------------------------------------------------------------------------------------------------------- 
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <web-app
>>    xmlns="http://java.sun.com/xml/ns/j2ee"
>>    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>>    xsi:schemaLocation="
>> http://java.sun.com/xml/ns/j2ee
>> http://java.sun.com/xml/ns/j2ee/web-app_2_5.xsd"
>>    version="2.4">
>>
>> <display-name>App</display-name>
>>
>> <!-- Unrelated Spring contextListener and Wicket filter configuration 
>> here
>>    have been supresed -->
>>
>> <resource-ref>
>> <res-ref-name>jdbc/AppDataSource</res-ref-name>
>> <res-type>javax.sql.DataSource</res-type>
>> <res-auth>Container</res-auth>
>> <res-sharing-scope>Shareable</res-sharing-scope>
>> </resource-ref>
>> <!--
>>    Ultimately I want to do this, but I can't get persistence.xml to 
>> work...
>> <persistence-unit-ref>
>> <persistence-unit-ref-name>persistence/appPersistenceUnit</persistence-unit-ref-name> 
>>
>> <persistence-unit-name>appPersistenceUnit</persistence-unit-name>
>> </persistence-unit-ref>
>> -->
>> </web-app>
>>
>>
>> geronimo-web.xml
>> ------------------------------------------------------------------------------------------------------------------------------------------------- 
>>
>> <?xml version="1.0" encoding="UTF-8"?>
>> <web-app xmlns="http://geronimo.apache.org/xml/ns/j2ee/web-2.0.1"
>>    xmlns:naming="http://geronimo.apache.org/xml/ns/naming-1.2"
>>    xmlns:sec="http://geronimo.apache.org/xml/ns/security-2.0"
>>    xmlns:sys="http://geronimo.apache.org/xml/ns/deployment-1.2">
>>
>> <sys:environment>
>> <sys:moduleId>
>> <sys:groupId>app</sys:groupId>
>> <sys:artifactId>app-frontend</sys:artifactId>
>> <sys:version>0.0.1</sys:version>
>> <sys:type>car</sys:type>
>> </sys:moduleId>
>> <sys:dependencies>
>> <!-- Need the embedded Derby -->
>> <sys:dependency>
>> <sys:groupId>org.apache.geronimo.configs</sys:groupId>
>> <sys:artifactId>
>>                    system-database
>> </sys:artifactId>
>> </sys:dependency>
>> </sys:dependencies>
>> </sys:environment>
>>
>> <context-root>/app</context-root>
>>
>> <!-- Ultimately, I want to register the PU in JNDI,
>>    but persistence.xml does not work
>> <naming:persistence-unit-ref>
>> <naming:persistence-unit-ref-name>persistence/appPersistenceUnit</naming:persistence-unit-ref-name> 
>>
>> <naming:persistence-unit-name>persistence/appPersistenceUnit</naming:persistence-unit-name> 
>>
>> </naming:persistence-unit-ref>
>>    -->
>>
>> <naming:resource-ref>
>> <naming:ref-name>jdbc/AppDataSource</naming:ref-name>
>> <naming:resource-link>SystemDatasource</naming:resource-link>
>> </naming:resource-ref>
>> </web-app>
>>
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