Kohlmeier Christian wrote:
>
> Hi,
>
> I havs some questions concerning the <beans>.properties file refered in the
> textual deployment descriptor.
>
> The jonas example beans show that this files are used to set some database
> configuration.
> I would like to use this file to set some session beans inital information.
>
> Questions
> 1) Is it possible to use this properties files for other reasons than
> database configuration?
> 2) How do i read this properties inside my bean?
> 3) Is the / At what time is the - properties file read by the EJB-Server?
> a) Never? Only used at deployment time.
> b) Once? At beans load time?.
> c) Every time I read the beans context?
>
> Christian Kohlmeier
>
Hi,
As it is explained in the JOnAS Bean Programmer's Guide the "environment
properties"
part of the textual Deployment descriptor reference a file in which are
set properties.
These properties are classified in two categories:
1.bean properties: the properties specific to the bean itself, i.e.
used by the bean
implementation only (e.g. the max value of a particular field, ...).
2.container properties: properties that are used by the container
and/or
EJB platform tools for activities delegated to the platform such as
persistence
management (in the case of container-managed persistence).
The standard way to read these properties inside a bean is for example:
public class SomeBean implements SessionBean {
SessionContext ctx;
java.util.Properties env;
public void setSessionContext(SessionContext sc) {
ctx = sc;
env = ctx.getEnvironment();
}
public someBusinessMethod(...) {
String fooValue = env.getProperty("foo");
String barValue = env.getProperty("bar");
}
....
Note this is the standard way for EJB 1.0 and JOnAS 1.6
Now for EJB1.1 specifications and JOnAS 2.0 the standard way is the
following:
in your XML deployment descriptor you must have this sort of thing:
<env-entry>
<env-entry-name>foo</env-entry-name>
<env-entry-type>java.lang.String</env-entry-type>
<env-entry-value>foovalue</env-entry-value>
</env-entry>
and in your bean:
Context initialContext = null;
initialContext = new InitialContext();
String FooValue = (String)initialContext.lookup("java:comp/env/foo");
I hope it helps,
best regards,
--
Philippe
Philippe Coq Groupe Bulll/BullSoft/OpenMaster Phone: (33) 04 76 29 78
49
Bull S.A - 1 rue de Provence - 38432 Echirolles Cedex France
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