Question

I am developing a custom Maven plugin and I read some files. There are some variables that defined as

${foo}

and if there were at pom, maven could understand its value. I have to understand its value too. I found that:

/**
* @parameter expression="${session}"
*/
private MavenSession session;
...
session.getExecutionProperties()

When I say it I get many properties but when I say:

session.getExecutionProperties().getProperty("project.version")

it returns me null. What does execution properties returns(does it include system properties and JVM properties) and why it doesn’t understand something like

${project.version}

what should I do to get the values of something like it?

PS: My question is not how can I get project.version, it is just an example

Answer 1

I have implemented a Interpolator with an interceptor and could get values of Maven variables.