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From: "Alexandre Borgoltz" <alexandre.borgoltz@smartjog.com>
To: <tomcat-user@jakarta.apache.org>
Subject: Fw: [tomcat 5.5] Reference a JNDI env resource from another
 env-resource
Date: Mon, 29 Nov 2004 15:59:12 +0100
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Hi,=20

I have developed my own BeanFactory as explained in your =
JNDI-RESOURCE-HOWTO.

Everything works fine and I can use the corresponding factory =
successfully.=20

But when I try to upgrade it a bit, I'm facing a problem:

I'd like my factory to access a database to update the bean it returns. =
So I'd like it to use the datasource I've also configured in server.xml:

<GlobalNamingResources>    <Resource   name=3D"jdbc/oracle/sjogmxf" =
auth=3D"Container"                type=3D"javax.sql.DataSource"          =
       factory=3D"org.apache.commons.dbcp.BasicDataSourceFactory"        =
         driverClassName=3D"oracle.jdbc.driver.OracleDriver"             =
    url=3D"jdbc:oracle:thin:@re7:1521:SJOGMXF"                 =
username=3D"pdi"                password=3D"pdi"                =
maxActive=3D"20"                maxIdle=3D"10"                =
maxWait=3D"-1"    />     <Resource name=3D"infocenter" =
auth=3D"Container"                                =
type=3D"cosmos.infocenter.Infocenter"                =
factory=3D"test.factory.InfocenterFactory"    =
/></GlobalNamingResources>To be more precise, I've also added the =
following ResourceLink in my <Context> declaration:

<ResourceLink name=3D"infocenter" type=3D"cosmos.infocenter.Infocenter" =
global=3D"infocenter"/> <ResourceLink name=3D"jdbc/oracle/sjogmxf" =
type=3D"javax.sql.DataSource" global=3D"jdbc/oracle/sjogmxf"/>=20
When I try to lookup and use one of these resources directly from the =
webapps, it just works great. But if I try to modify my custom factory =
to make it lookup the datasource, it gets a NamingException (Comp is not =
linked to the initial context).=20

I suppose this means the initial context is created after the resources =
are created. Is there a way to have my custom resource reference another =
resource (in this case, the datasource)? Then is there a way to specify =
the order of loading for resources? (Here I'll need the datasource to be =
loaded BEFORE the custom factory...)

I thank you in advance,

Alexandre BORGOLTZ
Head of Technology

SmartJog SA
Phone: +33 (0)1 4996 6324=20
Fax: +33 (0)1 4996 6405
Mobile: +33 (0)6 8882 1417
alexandre.borgoltz@smartjog.com



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