• Add a field "String constraintsDrl" inOptaPlannerProperties for our Spring starter to allow

  optaplanner.constraints-drl=org/.../timeTableConstraints.drl

• Similarly for quarkus:

  quarkus.optaplanner.constraints-drl=org/.../timeTableConstraints.drl

• Look at solver-config-xml for inspiration
• If it is non empty and the file does not exist, fail fast.
• If it is empty, and the default "/constraints.drl" exists take that.
• If it is non-empty or the default "/constraints.drl" exists and a ConstraintProvider exists, fail fast.
• Update docs chapter "intregation": it has a list of all properties for Spring and Quarkus

Special:

• quarkus doesn't support DRL at the moment, because it excludes artifact drools-core-dynamic and depends on drools-core-static, such that CS works in native mode too. We suspect that if a users uses constraints.drl and excludes static and depends on dynamic, DRL will work, in non-native mode only of course. In case that works:
  • If it is non-empty or the default "/constraints.drl" exists, and quarkus is used, and static is in the classpath (or dynamic is not) - maybe use Class.forName() for this detection - then fail fast with a warning that has a second line similar to "Maybe ... exclude drools-core-static and depend on drools-core-dynamic ..."