[FR]: Pass --aux-classpath to PMD

[robson-glean]

What is the current behavior?

Some lints are not caught correctly because the linter cannot resolve the correct type for all expressions.

Describe the feature

Pass all the jar dependencies for each source file that is being linted through the --aux-classpath flag provided by PMD.

[alexeagle]

I'm not doing much Java lately - do you have time to contribute a PR that reproduces the issue in the example/ folder here? It's fine if the PR is red, I can make the starlark changes easily. This would save me a bunch of time :)

[robson-glean]

The issue I'm aware of is only fixed by both migrating to PMD 7 and passing the dependencies correctly. Here's a patch that I believe achieves both.
rules_lint_pmd7.patch

[robson-glean]

An example doesn't fit well with your current examples structure as it needs two files where the first depends on the second. The second needs to be compiled and passed to PMD in its --aux-classpath so that it can detect category/java/errorprone.xml/CompareObjectsWithEquals.

[alexeagle]

The example does permit multiple files and java_library targets. We already verify graph of typescript targets with eslint