Create rule for minimum usage of Java17 and JakartaEE 9+

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Collections of static code analysis rules

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Create rule for minimum usage of Java17 and JakartaEE 9+ #133

Open jmle opened 1 month ago

jmle commented 1 month ago

According to the migration guide:

Spring Framework 6.0 raises the minimum requirements to Java 17+ and Jakarta EE 9+.

This can be achieved:

By looking for JakartaEE/JavaEE related dependencies lower than JakartaEE 9
By peeking at the pom.xml/gradle.build if available and checking if there is any information about the Java version

In the rule description and message, try to be as verbose and clear as possible. Code examples are always welcome and useful. Feel free to use markdown syntax for these.

konveyor-ci-bot[bot] commented 1 month ago

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jmle commented 1 month ago

We can assume here that we are migrating from Spring Framework 5 to 6, therefore we can look for the java.version property to check the version of Java being used. The property maven.compiler.source can also be checked in case it exists.

Knowing the Jakarta version being used can be trickier. We need to take a look at potential JavaEE/JakartaEE versions being imported. If any javax package is found, a rule should be triggered.