[javaee-spec users] [jsr342-experts] Re: Platform default data source and JMS connection factory

From: Werner Keil <>
Date: Fri, 23 Mar 2012 00:04:39 +0100


Thanks, that sounds like the most flexible approach. While not confusing
those who are fine with the default lookup, others who may require
alternatives there can overwrite it.


On Thu, Mar 22, 2012 at 11:23 PM, Linda DeMichiel <> wrote:

> In view of the feedback we've received on this issue, our conclusion is
> that we should adopt approach 3.
> To summarize, in the data source case, the following will apply:
> The Java EE Platform requires that a Java EE Product Provider
> provide a database in the operational environment. The Java EE
> Product Provider must also provide a preconfigured, default data
> source for use by the application in accessing this database.
> The Java EE Product Provider must make the default data source
> accessible to the application under the JNDI name
> java:comp/defaultDataSource.
> The Application Component Provider or Deployer may explicitly bind a
> DataSource resource reference to the default data source using the
> lookup element of the Resource annotation or the lookup-name element
> of the resource-ref deployment descriptor element. For example,
> @Resource(name="myDataSource", lookup="java:comp/**defaultDataSource")
> DataSource myDS;
> If a DataSource resource reference is not mapped to a specific data
> source by the Application Component Provider or Deployer, it must be
> mapped by the Java EE Product Provider to a preconfigured data source
> for the Java EE Product Provider's default database. For example, in
> the absence of any action on the part of the developer or deployer,
> the following will map to a preconfigured data source for the
> product's default database:
> @Resource(name="myDataSource")
> DataSource myDS;
> And similarly for default JMS Connection Factory, whose JNDI name is
> java:comp/**defaultJMSConnectionFactory.
> -Linda

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