[234] Create rules detecting use of MicroProfile OpenAPI to facilitate EAP XP5->6 migration.

[pferraro]

https://issues.redhat.com/browse/JBEAP-28599

[jmle]

Hey @pferraro, thank you for submitting this. The rule you have submitted is technically correct, but usually we try to cater for all the available points of the migration guide so that we can offer a more accurate report. It would be good to cover these points in the migration guide too (the Incompatible Changes section is the only one I can see with meaningful changes).

[pferraro]

@jmle Is the java language provider capable of more than just regex parsing? If not, I do not see how to make this more specific without introducing false negatives.
e.g. the tool does not seem to detect usage of a class/method unless imported or declared using its FQCN.

[jmle]

@jmle Is the java language provider capable of more than just regex parsing? If not, I do not see how to make this more specific without introducing false negatives. e.g. the tool does not seem to detect usage of a class/method unless imported or declared using its FQCN.

@pferraro of course. Take a look at other rules in this repo or at the docs. The providers are backed by language servers, so they can do more complex lookups than just regexing. Feel free to ask me any questions.

[pferraro]

@jmle I had already consulted the docs you linked, which only describes the use of regular expressions for detecting code within a source file.
Consequently, I do not see how to (and cannot find any examples of) detecting the use of a specific class/interface unless it was explicitly declared or imported within the source code.
e.g.
The following code behaves differently between MicroProfile OpenAPI 3.1 and 4.0, where the former returns a SchemaType and the latter returns a List and thus should be detected by the rule:

MediaType mediaType = ...;
String type = mediaType.getSchema().getType().toString();

To detect this, I tried creating a rule using:

java.referenced:
    pattern: org.eclipse.microprofile.openapi.models.media.Schema

... with every location option, but was not able to convince the java language provider to detect this usage of the Schema interface, let alone a specific method on it.
What am I missing? Please advise.