Changes between Version 117 and Version 118 of BackwardsIncompatibleChanges

Timestamp:

Aug 19, 2007, 10:58:06 PM (17 years ago)

Author:

Adrian Holovaty

Comment:

Added "Refactored database backends"

BackwardsIncompatibleChanges

@@ -302 +302 @@
 == Changes to management.py commands ==
 
-In [5898], we refactored `management.py`. This was partially to clean up a 1700 line file, but also to allow user applications to register commands for use in `management.py`.
-
-As a result, any calls to management services in your code will need to be adjusted. For example, if you have some test code that calls `flush` and `load_data`:
+In [5898], we refactored {{{management.py}}}. This was partially to clean up a 1700-line file, but also to allow user applications to register commands for use in {{{management.py}}}.
+
+As a result, any calls to management services in your code will need to be adjusted. For example, if you have some test code that calls {{{flush}}} and {{{load_data}}}:
 {{{
 >>> from django.core import management
@@ -317 +317 @@
 >>> management.call_command('loaddata', 'test_data', verbosity=0)
 }}}
+
+== Refactored database backends ==
+
+In a series of commits from [5949] to [5982], we refactored the database backends (the code in {{{django.db.backends}}}) to remove quite a bit of duplication, make it easier to maintain and extend, and to lay the groundwork for advanced features such as database connection pooling.
+
+As a result, almost *all* of the backend-level functions have been renamed and/or relocated. None of these were documented, but you'll need to change your code if you're using any of these functions:
+
+|| '''Old name/location'''                         || '''New name/location'''                    ||
+|| {{{django.db.backend.get_autoinc_sql}}}         || {{{django.db.connection.ops.autoinc_sql}}} ||
+|| {{{django.db.backend.get_date_extract_sql}}}    || {{{django.db.connection.ops.date_extract_sql}}} ||
+|| {{{django.db.backend.get_date_trunc_sql}}}      || {{{django.db.connection.ops.date_trunc_sql}}} ||
+|| {{{django.db.backend.get_datetime_cast_sql}}}   || {{{django.db.connection.ops.datetime_cast_sql}}} ||
+|| {{{django.db.backend.get_deferrable_sql}}}      || {{{django.db.connection.ops.deferrable_sql}}} ||
+|| {{{django.db.backend.get_drop_foreignkey_sql}}} || {{{django.db.connection.ops.drop_foreignkey_sql}}} ||
+|| {{{django.db.backend.get_fulltext_search_sql}}} || {{{django.db.connection.ops.fulltext_search_sql}}} ||
+|| {{{django.db.backend.get_last_insert_id}}}      || {{{django.db.connection.ops.last_insert_id}}} ||
+|| {{{django.db.backend.get_limit_offset_sql}}}    || {{{django.db.connection.ops.limit_offset_sql}}} ||
+|| {{{django.db.backend.get_max_name_length}}}     || {{{django.db.connection.ops.max_name_length}}} ||
+|| {{{django.db.backend.get_pk_default_value}}}    || {{{django.db.connection.ops.pk_default_value}}} ||
+|| {{{django.db.backend.get_random_function_sql}}} || {{{django.db.connection.ops.random_function_sql}}} ||
+|| {{{django.db.backend.get_sql_flush}}}           || {{{django.db.connection.ops.sql_flush}}} ||
+|| {{{django.db.backend.get_sql_sequence_reset}}}  || {{{django.db.connection.ops.sequence_reset_sql}}} ||
+|| {{{django.db.backend.get_start_transaction_sql}}} || {{{django.db.connection.ops.start_transaction_sql}}} ||
+|| {{{django.db.backend.get_tablespace_sql}}}      || {{{django.db.connection.ops.tablespace_sql}}} ||
+|| {{{django.db.backend.quote_name}}}              || {{{django.db.connection.ops.quote_name}}} ||
+|| {{{django.db.backend.get_query_set_class}}}     || {{{django.db.connection.ops.query_set_class}}} ||
+|| {{{django.db.backend.get_field_cast_sql}}}      || {{{django.db.connection.ops.field_cast_sql}}} ||
+|| {{{django.db.backend.get_drop_sequence}}}       || {{{django.db.connection.ops.drop_sequence_sql}}} ||
+|| {{{django.db.backend.OPERATOR_MAPPING}}}        || {{{django.db.connection.operators}}} ||
+|| {{{django.db.backend.allows_group_by_ordinal}}} || {{{django.db.connection.features.allows_group_by_ordinal}}} ||
+|| {{{django.db.backend.allows_unique_and_pk}}}    || {{{django.db.connection.features.allows_unique_and_pk}}} ||
+|| {{{django.db.backend.autoindexes_primary_keys}}}|| {{{django.db.connection.features.autoindexes_primary_keys}}} ||
+|| {{{django.db.backend.needs_datetime_string_cast}}}||{{{django.db.connection.features.needs_datetime_string_cast}}} ||
+|| {{{django.db.backend.needs_upper_for_iops}}}    || {{{django.db.connection.features.needs_upper_for_iops}}} ||
+|| {{{django.db.backend.supports_constraints}}}    || {{{django.db.connection.features.supports_constraints}}} ||
+|| {{{django.db.backend.supports_tablespaces}}}    || {{{django.db.connection.features.supports_tablespaces}}} ||
+|| {{{django.db.backend.uses_case_insensitive_names}}} || {{{django.db.connection.features.uses_case_insensitive_names}}} ||
+|| {{{django.db.backend.uses_custom_queryset}}}    || {{{django.db.connection.features.uses_custom_queryset}}} ||