public abstract Class SettingControl

final class RegExpControl extends SettingControl {
    private static final String DEFAULT_VALUE = ".*";
    private Pattern pattern = Pattern.compile(DEFAULT_VALUE);

    @Override
    public String combine(Set<String> values) {
        List<String> valid = new ArrayList<>();
        for (String value : values) {
            try {
                Pattern.compile(value);
                valid.add(value);
            } catch (PatternSyntaxException pse) {
                // Ignore invalid patterns
            }
        }
        if (valid.isEmpty()) {
            return DEFAULT_VALUE;
        }
        if (valid.size() == 1) {
            return valid.getFirst();
        }
        return "(" + String.join(")|(", valid) + ")";
    }

    @Override
    public void setValue(String value) {
        try {
            this.pattern = Pattern.compile(value);
        } catch (PatternSyntaxException pse) {
            // Ignore invalid patterns
        }
    }

    @Override
    public String getValue() {
        return pattern.pattern();
    }

    public boolean matches(String s) {
        return pattern.matcher(s).find();
    }
}

abstract class HTTPRequest extends Event {
    @Label("Request URI")
    protected String uri;

    @Label("Servlet URI Filter")
    @SettingDefinition
    protected boolean uriFilter(RegExpControl regExp) {
        return regExp.matches(uri);
    }
}

@Label("HTTP Get Request")
class HTTPGetRequest extends HTTPRequest {
}

@Label("HTTP Post Request")
class HTTPPostRequest extends HTTPRequest {
}

class ExampleServlet extends HttpServlet {
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) {
        HTTPGetRequest request = new HTTPGetRequest();
        request.begin();
        request.uri = req.getRequestURI();
        ...
        request.commit();
    }

    protected void doPost(HttpServletRequest req, HttpServletResponse resp) {
        HTTPPostRequest request = new HTTPPostRequest();
        request.begin();
        request.uri = req.getRequestURI();
        ...
        request.commit();
    }
}

Recording r = new Recording();
r.enable("HTTPGetRequest").with("uriFilter", "https://www.example.com/list/.*");
r.enable("HTTPPostRequest").with("uriFilter", "https://www.example.com/login/.*");
r.start();