diff options
Diffstat (limited to 'activerecord')
7 files changed, 86 insertions, 16 deletions
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md index bfdc978005..477bc1b54a 100644 --- a/activerecord/CHANGELOG.md +++ b/activerecord/CHANGELOG.md @@ -1,3 +1,15 @@ +* SQLite3 adapter supports expression indexes. + + ``` + create_table :users do |t| + t.string :email + end + + add_index :users, 'lower(email)', name: 'index_users_on_email', unique: true + ``` + + *Gray Kemmey* + * Allow subclasses to redefine autosave callbacks for associated records. Fixes #33305. diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index 1ee52945ea..70b2ca7d7e 100644 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -1524,6 +1524,7 @@ module ActiveRecord # Returns the associated object. +nil+ is returned if none is found. # [association=(associate)] # Assigns the associate object, extracts the primary key, and sets it as the foreign key. + # No modification or deletion of existing records takes place. # [build_association(attributes = {})] # Returns a new object of the associated type that has been instantiated # with +attributes+ and linked to this object through a foreign key, but has not yet been saved. diff --git a/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb b/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb index 92f15de219..10c8c8e8ab 100644 --- a/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb @@ -3,7 +3,7 @@ require "active_record/connection_adapters/abstract_mysql_adapter" require "active_record/connection_adapters/mysql/database_statements" -gem "mysql2", ">= 0.4.4", "< 0.6.0" +gem "mysql2", ">= 0.4.4" require "mysql2" module ActiveRecord diff --git a/activerecord/lib/active_record/connection_adapters/sqlite3/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/sqlite3/schema_statements.rb index 24e7bc65fa..46ca7e07a9 100644 --- a/activerecord/lib/active_record/connection_adapters/sqlite3/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/sqlite3/schema_statements.rb @@ -21,19 +21,24 @@ module ActiveRecord WHERE name = #{quote(row['name'])} AND type = 'index' SQL - /\sWHERE\s+(?<where>.+)$/i =~ index_sql + /\bON\b\s*"?(\w+?)"?\s*\((?<expressions>.+?)\)(?:\s*WHERE\b\s*(?<where>.+))?\z/i =~ index_sql columns = exec_query("PRAGMA index_info(#{quote(row['name'])})", "SCHEMA").map do |col| col["name"] end - # Add info on sort order for columns (only desc order is explicitly specified, asc is - # the default) orders = {} - if index_sql # index_sql can be null in case of primary key indexes - index_sql.scan(/"(\w+)" DESC/).flatten.each { |order_column| - orders[order_column] = :desc - } + + if columns.any?(&:nil?) # index created with an expression + columns = expressions + else + # Add info on sort order for columns (only desc order is explicitly specified, + # asc is the default) + if index_sql # index_sql can be null in case of primary key indexes + index_sql.scan(/"(\w+)" DESC/).flatten.each { |order_column| + orders[order_column] = :desc + } + end end IndexDefinition.new( diff --git a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb index efe454fa7f..d32fd5ea09 100644 --- a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb @@ -125,6 +125,10 @@ module ActiveRecord true end + def supports_expression_index? + sqlite_version >= "3.9.0" + end + def requires_reloading? true end @@ -483,9 +487,12 @@ module ActiveRecord name = name[1..-1] end - to_column_names = columns(to).map(&:name) - columns = index.columns.map { |c| rename[c] || c }.select do |column| - to_column_names.include?(column) + columns = index.columns + if columns.is_a?(Array) + to_column_names = columns(to).map(&:name) + columns = columns.map { |c| rename[c] || c }.select do |column| + to_column_names.include?(column) + end end unless columns.empty? diff --git a/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb b/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb index d1d4d545a3..7b73621ed9 100644 --- a/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb +++ b/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb @@ -345,6 +345,42 @@ module ActiveRecord end end + if ActiveRecord::Base.connection.supports_expression_index? + def test_expression_index + with_example_table do + @conn.add_index "ex", "max(id, number)", name: "expression" + index = @conn.indexes("ex").find { |idx| idx.name == "expression" } + assert_equal "max(id, number)", index.columns + end + end + + def test_expression_index_with_where + with_example_table do + @conn.add_index "ex", "id % 10, max(id, number)", name: "expression", where: "id > 1000" + index = @conn.indexes("ex").find { |idx| idx.name == "expression" } + assert_equal "id % 10, max(id, number)", index.columns + assert_equal "id > 1000", index.where + end + end + + def test_complicated_expression + with_example_table do + @conn.execute "CREATE INDEX expression ON ex (id % 10, (CASE WHEN number > 0 THEN max(id, number) END))WHERE(id > 1000)" + index = @conn.indexes("ex").find { |idx| idx.name == "expression" } + assert_equal "id % 10, (CASE WHEN number > 0 THEN max(id, number) END)", index.columns + assert_equal "(id > 1000)", index.where + end + end + + def test_not_everything_an_expression + with_example_table do + @conn.add_index "ex", "id, max(id, number)", name: "expression" + index = @conn.indexes("ex").find { |idx| idx.name == "expression" } + assert_equal "id, max(id, number)", index.columns + end + end + end + def test_primary_key with_example_table do assert_equal "id", @conn.primary_key("ex") diff --git a/activerecord/test/cases/schema_dumper_test.rb b/activerecord/test/cases/schema_dumper_test.rb index 75b68b521c..db13f20a39 100644 --- a/activerecord/test/cases/schema_dumper_test.rb +++ b/activerecord/test/cases/schema_dumper_test.rb @@ -226,6 +226,20 @@ class SchemaDumperTest < ActiveRecord::TestCase assert_match %r{t\.float\s+"temperature"$}, output end + if ActiveRecord::Base.connection.supports_expression_index? + def test_schema_dump_expression_indices + index_definition = dump_table_schema("companies").split(/\n/).grep(/t\.index.*company_expression_index/).first.strip + + if current_adapter?(:PostgreSQLAdapter) + assert_match %r{CASE.+lower\(\(name\)::text\)}i, index_definition + elsif current_adapter?(:SQLite3Adapter) + assert_match %r{CASE.+lower\(name\)}i, index_definition + else + assert false + end + end + end + if current_adapter?(:Mysql2Adapter) def test_schema_dump_includes_length_for_mysql_binary_fields output = standard_dump @@ -278,11 +292,6 @@ class SchemaDumperTest < ActiveRecord::TestCase assert_match %r{t\.decimal\s+"decimal_array_default",\s+default: \["1.23", "3.45"\],\s+array: true}, output end - def test_schema_dump_expression_indices - index_definition = dump_table_schema("companies").split(/\n/).grep(/t\.index.*company_expression_index/).first.strip - assert_match %r{CASE.+lower\(\(name\)::text\)}i, index_definition - end - def test_schema_dump_interval_type output = dump_table_schema "postgresql_times" assert_match %r{t\.interval\s+"time_interval"$}, output |