chore: Change class and decorators locations to match new layout (#44)

- In general, ai.timefold.solver.core.api.x and its subpackages ->
  timefold.solver.x.

- Exception for ai.timefold.solver.core.api.solver, which it and
  its subpackages -> timefold.solver.

- ai.timefold.solver.core.x and its subpackages -> timefold.solver.x
  (test and config).

- Use dynamic __all__ when not TYPE_CHECKING for score and domain,
  since they have some classes that require the JVM to be started
  When TYPE_CHECKING, there are stub classes that the TYPE_CHECKER
  will see.

- Remove `@incremental_score_calculator` decorator, since it been replaced
  by `IncrementalScoreCalculator` ABC.

- Create an empty Constraint stub so users can reference it in their type
  signatures without importing something from Java.

Author: Christopher-Chianelli

setup.py

@@ -98,11 +98,16 @@ def find_stub_files(stub_root: str):
         'License :: OSI Approved :: Apache Software License',
         'Operating System :: OS Independent'
     ],
-    packages=['timefold.solver', 'timefold.solver.api', 'timefold.solver.annotation',
-              'timefold.solver.config', 'timefold.solver.constraint', 'timefold.solver.score',
-              'timefold.solver.test', 'timefold.solver.valuerange',
+    packages=['timefold.solver',
+              'timefold.solver.config',
+              'timefold.solver.domain',
+              'timefold.solver.heuristic',
+              'timefold.solver.score',
+              'timefold.solver.test',
               'jpyinterpreter',
-              'java-stubs', 'jpype-stubs', 'ai-stubs'],
+              'java-stubs',
+              'jpype-stubs',
+              'ai-stubs'],
     package_dir={
         'timefold.solver': 'timefold-solver-python-core/src/main/python',
         'jpyinterpreter': 'jpyinterpreter/src/main/python',

tests/test_collectors.py

@@ -1,8 +1,7 @@
-from timefold.solver.api import *
-from timefold.solver.annotation import *
+from timefold.solver import *
+from timefold.solver.domain import *
 from timefold.solver.score import *
 from timefold.solver.config import *
-from timefold.solver.constraint import *
 
 from dataclasses import dataclass, field
 from typing import Annotated, List

tests/test_constraint_streams.py

@@ -1,8 +1,7 @@
-from timefold.solver.api import *
-from timefold.solver.annotation import *
+from timefold.solver import *
+from timefold.solver.domain import *
 from timefold.solver.score import *
 from timefold.solver.config import *
-from timefold.solver.constraint import *
 
 import inspect
 import re

tests/test_constraint_verifier.py

@@ -1,9 +1,8 @@
 import pytest
 
-from timefold.solver.annotation import *
+from timefold.solver.domain import *
 from timefold.solver.score import *
 from timefold.solver.config import *
-from timefold.solver.constraint import *
 from timefold.solver.test import *
 
 from typing import Annotated, List

tests/test_custom_shadow_variables.py

@@ -1,10 +1,9 @@
 from typing import Annotated, Optional, List
 from dataclasses import dataclass, field
 
-from timefold.solver.api import *
-from timefold.solver.annotation import *
+from timefold.solver import *
+from timefold.solver.domain import *
 from timefold.solver.config import *
-from timefold.solver.constraint import *
 from timefold.solver.score import *
 
 

tests/test_domain.py

@@ -1,9 +1,7 @@
-from timefold.solver.api import *
-from timefold.solver.annotation import *
+from timefold.solver import *
+from timefold.solver.domain import *
 from timefold.solver.config import *
-from timefold.solver.constraint import *
 from timefold.solver.score import *
-from timefold.solver.valuerange import *
 
 from dataclasses import dataclass, field
 from typing import Annotated, Optional, List

tests/test_easy_score_calculator.py

@@ -1,5 +1,5 @@
-from timefold.solver.api import *
-from timefold.solver.annotation import *
+from timefold.solver import *
+from timefold.solver.domain import *
 from timefold.solver.config import *
 from timefold.solver.score import *
 

tests/test_incremental_score_calculator.py

@@ -1,8 +1,7 @@
-from timefold.solver.api import *
-from timefold.solver.annotation import *
+from timefold.solver import *
+from timefold.solver.domain import *
 from timefold.solver.config import *
 from timefold.solver.score import *
-from timefold.solver.constraint import *
 
 import pytest
 from dataclasses import dataclass, field
@@ -315,7 +314,6 @@ def get_indictment_map(self):
 
 def test_error_message_for_missing_methods():
     with pytest.raises(TypeError):  # Exact error message from ABC changes between versions
-        @incremental_score_calculator
         class IncrementalScoreCalculatorMissingMethods(IncrementalScoreCalculator):
             def before_entity_added(self, entity):
                 pass

tests/test_inverse_relation.py

@@ -1,8 +1,7 @@
-from timefold.solver.api import *
-from timefold.solver.annotation import *
+from timefold.solver import *
+from timefold.solver.domain import *
 from timefold.solver.config import *
 from timefold.solver.score import *
-from timefold.solver.constraint import *
 
 from dataclasses import dataclass, field
 from typing import Annotated, List

tests/test_pinning.py

@@ -1,8 +1,7 @@
-from timefold.solver.api import *
-from timefold.solver.annotation import *
+from timefold.solver import *
+from timefold.solver.domain import *
 from timefold.solver.config import *
 from timefold.solver.score import *
-from timefold.solver.constraint import *
 
 from dataclasses import dataclass, field
 from typing import Annotated, List