The META-INF method is not as concise as the Project.CURRENT_PROJECT_VERSION
method, but it appears to be more correct.
You had a mistake in your code. Here is the corrected version.
Properties props = new Properties();
String path =
"META-INF/maven/org.apache.cayenne/cayenne-server/pom.properties";
try(InputStream in =
ObjectContext.class.getClassLoader().getResourceAsStream(path)) {
props.load(in);
}
String cayenneServerVersion = props.getProperty("version");
This results in the string:
4.0.M2
This is adequate for a system health-check, thanks.
Joe
> On Jul 27, 2015, at 9:57 AM, Andrus Adamchik <and...@objectstyle.org> wrote:
>
>
>> On Jul 27, 2015, at 4:21 PM, Joe Baldwin <jfbald...@earthlink.net> wrote:
>>
>> 1. My goal is to display the version of cayenne server jar I have added to
>> the project with Cayenne 4.0.
>
> As it happens, Project.CURRENT_PROJECT_VERSION (or its 4.0 alternative) is
> not the same as the version of cayenne server jar. It denotes the version of
> the XML mapping format, which does not align with the .jar version.
>
> If you need the version of the jar, here is another approach. While you are
> not using Maven, Cayenne is assembled with Maven, so each Cayenne jar has
> some extra metadata that you get for free. Namely there's a "pom.properties"
> file that you can read and get the version:
>
> Properties props = new Properties();
> String path =
> "META-INF/maven/org.apache.cayenne/cayenne-server/pom.properties";
> try(InputStream in :
> ObjectContext.class.getClassLoader().getResourceAsStream(path)) {
> props.load(in);
> }
>
> String version = props.getProperty("version");
>
> Andrus
>
>
