If it is not a Bootique project, the property should work. A few non-Bootique 
projects that I still have (that are on Cayenne 4.0) are started using 
-Dcayenne.* properties from the docs.

If it is a Bootique project, you will need to use the Bootique approach to 
configure credentials for anything [1], Cayenne included. E.g. for a sample 
config [2], you'd be setting a value for the property 
"-Dbq.jdbc.mysql.password". Another way (preferred to -D IMO) is to define a 
shell variable pointing to the same property, and then exporting the var:

in MyModule.java:

   BQCoreModule.extend(binder)
     .declareVar("jdbc.mysql.username", "DB_USER");
     .declareVar("jdbc.mysql.password", "DB_PASSWORD");

in startup script:

   export DB_PASSWORD=root
   export DB_PASSWORD=secret

   java -jar my.jar # no password in the Java process sig

Andrus

[1] 
http://bootique.io/docs/0/bootique-docs/index.html#chapter-7-configuration-and-configurable-factories
[2] 
https://github.com/bootique-examples/bootique-cayenne-demo/blob/master/config.yml

> On Jan 17, 2018, at 12:22 AM, Pascal Robert <prob...@druide.com> wrote:
> 
> Do -Dcayenne.jdbc.username really work? I’m trying to use that (so that the 
> password is not stored in Git), and the runtime is still using the login 
> information from the XML file.
> 
> Cayenne 4.1.M1.
> ServerRuntime mysqlRuntime = 
> ServerRuntime.builder().addConfig("cayenne-mysql.xml").build();
> 
>> Le 18 déc. 2017 à 11:49, Andrus Adamchik <and...@objectstyle.org> a écrit :
>> 
>> Hi Mark,
>> 
>> We've done quite a bit of work in Cayenne to avoid complex things like 
>> PasswordEncoding or custom DataSourceFactories. If all that is needed is to 
>> change / define login credentials, the simplest way is via properties [1]. 
>> [2] shows an example with a single DataNode. If you have more than one, you 
>> will need to add the project name and the DataNode name to the base property 
>> name. E.g.:
>> 
>> export MY_USER=user
>> export MY_PASSWORD=secret
>> 
>> java -Dcayenne.jdbc.username.project.mynode=$MY_USER \
>>    -Dcayenne.jdbc.password.project.mynode=$MY_PASSWORD \
>>    -jar myapp.jar 
>> 
>> 
>> Hope this helps,
>> Andrus
>> 
>> [1] 
>> http://cayenne.apache.org/docs/4.0/cayenne-guide/configuration-properties.html
>> [2] 
>> https://stackoverflow.com/questions/45781378/best-practice-to-manage-apache-cayenne-project-xml-file
>> 
>> 
>> 
>>> On Dec 17, 2017, at 4:23 AM, Mark Hull <mark.mkg...@gmail.com> wrote:
>>> 
>>> I apologize if this question has been asked and answered before but: What 
>>> is the best-practices solution to redact the database user name and 
>>> password from an XML file created and used by Cayenne Modeler? The 
>>> ServerRuntime build statement is simply:
>>> 
>>> cayenneRuntime = ServerRuntime.builder()
>>> .addConfig("com/hulles/a1icia/cayenne/cayenne-a1icia.xml")
>>>           .build();
>>> 
>>> It works just fine as long as the db user name and password are in the XML 
>>> file, but I don't believe in leaving clear-text artifacts like that laying 
>>> around in the code, so I want to add the user and password data at runtime 
>>> from a Java method (not from an external file or an 'executable', whatever 
>>> that means in the content of PasswordEncoding). Adding .user("xyz") and 
>>> .password("zyx") to the build statement don't work, presumably because the 
>>> DataNode is not the default and those statements just set their respective 
>>> fields for the default DataNode.
>>> 
>>> If I have to, I can create either a Module to change those properties 
>>> somehow at runtime (though the documentation for doing so is, to be kind, 
>>> sparse), somehow implement the PasswordEncoding (even less documentation, 
>>> because I don't know where it's used), or just edit the XML at runtime 
>>> (horrible choice but looking like the best of a bad lot at this point).
>>> 
>>> All this seems like a lot of effort when I imagine this need must crop up 
>>> fairly often among Cayenne users (it should, for security reasons IMO). Is 
>>> there a simple standard way to do what I want? Or at least a standard way? 
>>> I don't want to invent a new wheel here. I feel like I'm missing something 
>>> obvious that everyone else knows about and that I just missed. Oh, by the 
>>> way, whatever the solution is should still allow Cayenne Modeler to 
>>> function normally.
>>> 
>>> I promise I searched for the answer everywhere I could think of. 
>>> StackOverflow had a couple answers that used deprecated methods and didn't 
>>> work when I tried them.
>>> 
>>> Thanks in advance for any help. I hope there's a really simple answer so I 
>>> feel stupid but don't have to spend any more time on this than I have 
>>> already. :)
>>> 
>>> - Mark Hull
>>> 
>>> /People say nothing is impossible, but I do nothing every day. - A. A. 
>>> Milne/
>> 
> 

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