Remove LocMapperStore

LMS-2918

common/lib/xmodule/xmodule/modulestore/django.py

@@ -14,7 +14,6 @@ import django.utils
 import re
 import threading
 
-from xmodule.modulestore.loc_mapper_store import LocMapperStore
 from xmodule.util.django import get_current_request_hostname
 import xmodule.modulestore  # pylint: disable=unused-import
 from xmodule.contentstore.django import contentstore
@@ -102,36 +101,8 @@ def clear_existing_modulestores():
 
     This is useful for flushing state between unit tests.
     """
-    global _MIXED_MODULESTORE, _loc_singleton  # pylint: disable=global-statement
+    global _MIXED_MODULESTORE  # pylint: disable=global-statement
     _MIXED_MODULESTORE = None
-    # pylint: disable=W0603
-    cache = getattr(_loc_singleton, "cache", None)
-    if cache:
-        cache.clear()
-    _loc_singleton = None
-
-
-# singleton instance of the loc_mapper
-_loc_singleton = None
-
-
-def loc_mapper():
-    """
-    Get the loc mapper which bidirectionally maps Locations to Locators. Used like modulestore() as
-    a singleton accessor.
-    """
-    # pylint: disable=W0603
-    global _loc_singleton
-    # pylint: disable=W0212
-    if _loc_singleton is None:
-        try:
-            loc_cache = get_cache('loc_cache')
-        except InvalidCacheBackendError:
-            loc_cache = get_cache('default')
-        # instantiate
-        _loc_singleton = LocMapperStore(loc_cache, **settings.DOC_STORE_CONFIG)
-
-    return _loc_singleton
 
 
 class ModuleI18nService(object):

common/lib/xmodule/xmodule/modulestore/split_migrator.py

@@ -173,7 +173,7 @@ class SplitMigrator(object):
         """
         def get_translation(location):
             """
-            Convert the location and add to loc mapper
+            Convert the location
             """
             return new_course_key.make_usage_key(
                 location.category,
@@ -207,7 +207,7 @@ class SplitMigrator(object):
         """
         def get_translation(location):
             """
-            Convert the location and add to loc mapper
+            Convert the location
             """
             return new_course_key.make_usage_key(
                 location.category,

common/lib/xmodule/xmodule/modulestore/tests/django_utils.py

@@ -5,10 +5,8 @@ Modulestore configuration for test cases.
 from uuid import uuid4
 from django.test import TestCase
 from django.contrib.auth.models import User
-from xmodule.modulestore.django import (
-    modulestore, clear_existing_modulestores, loc_mapper
-)
 from xmodule.contentstore.django import _CONTENTSTORE
+from xmodule.modulestore.django import modulestore, clear_existing_modulestores
 from xmodule.modulestore import ModuleStoreEnum
 
 
@@ -197,11 +195,6 @@ class ModuleStoreTestCase(TestCase):
             module_store._drop_database()  # pylint: disable=protected-access
         _CONTENTSTORE.clear()
 
-        location_mapper = loc_mapper()
-        if location_mapper.db:
-            location_mapper.location_map.drop()
-            location_mapper.db.connection.close()
-
     @classmethod
     def setUpClass(cls):
         """

docs/en_us/developers/source/modulestore.rst

@@ -33,10 +33,6 @@ Modulestore Helpers
 These packages provide utilities for easier use of modulestores,
 and migrating data between modulestores.
 
-.. automodule:: xmodule.modulestore.loc_mapper_store
-    :members:
-    :show-inheritance:
-
 .. automodule:: xmodule.modulestore.search
     :members:
     :show-inheritance:

mongo_indexes.md

@@ -12,14 +12,6 @@ db.collection_name
 ```
 as in ```db.location_map.ensureIndex({'course_id': 1}{background: true})```
 
-location_map:
-=============
-
-```
-ensureIndex({'org': 1, 'offering': 1})
-ensureIndex({'schema': 1})
-```
-
 fs.files:
 =========