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From lenka <>
Subject Re: PasswordSource if passwordLocation is executable
Date Sat, 31 Oct 2009 12:35:24 GMT
Hello Michael,

hopefully you can help me farther. I did not succeed to run a Java

I have tried to read the password from the file system, with xml
something like you wrote, it worked fine. :)
	<login userName="username" passwordLocation="url"
passwordSource="file:///home/lenka/password/"/> (where in password is a
plain text)

However to run a  Java does not work. I have tried with following
<login userName="username" passwordLocation="executable"
<login userName="username" passwordLocation="executable"
passwordSource="java com.lenka.Password"/>
<login userName="username"
file://home/lenka/Password"/> (with the absolute address, to

package com.lenka;

public class Password {

	public static void main(String[] args) {

Any hint will be appreciated.

org.apache.cayenne.CayenneRuntimeException: Error detecting database
type: The server requested password-based authentication, but no
password was provided.

-----Pôvodná správa-----
Od: lenka <>
Predmet: Re: PasswordSource if passwordLocation is executable
Dátum: Thu, 29 Oct 2009 16:09:30 +0100

Hi Michael,

Thank you very much for the answer. Yes, I would like to use the Java
function. But I think I understand it now. 

Thank you a lot 

-----Original Message-----
From: Michael Gentry <>
Subject: Re: PasswordSource if passwordLocation is executable
Date: Thu, 29 Oct 2009 09:42:48 -0400

Hi Lenka,

The passwordSource in the XML is overloaded in this case and should
reference the executable to run along with any parameters it needs.
It looks to me like you are trying to run a Java method?  If so,
you'll need to have a "java ..." command there.  I also suspect you
might could use the URL method.  I've used that in the past to read an
encrypted password off the filesystem.  For that, part of my XML
looked something like:

<login userName="username" encoderClass="my.TripleDESPasswordEncoder"
encoderSalt="94VW4MOreXfvbSbB6ewbfp3XkdoZvgwp" passwordLocation="url"


On Thu, Oct 29, 2009 at 3:45 AM, lenka <> wrote:
> Dear Cayenne users,
> I have a problem here. I need to change the password in a runtime.
> Therefore I set in Cayenne Modeler:
> in Password Encoder the following values:
> Password Location: Executable Program
> Password Executable: lenka.Application.test()"
> In the xml file, the following code was produced.
> <driver project-version="3.0" class="org.postgresql.Driver">
> <url value="jdbc:postgresql://"/>
> <connectionPool min="1" max="1"/>
> <login userName="user_name"
> encoderClass="org.apache.cayenne.conf.Rot47PasswordEncoder"
> passwordLocation="executable"
> passwordSource="sk.lenka.Application.test()"/>
> </driver>
> I wonder what to enter in "passwordSource" if I need to read the
> password from the method: lenka.Application.test();
> Any help will be appreciated.
> Lenka

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