diff options
Diffstat (limited to 'activerecord/lib')
8 files changed, 120 insertions, 22 deletions
diff --git a/activerecord/lib/active_record/associations/has_many_through_association.rb b/activerecord/lib/active_record/associations/has_many_through_association.rb index 9657cb081d..53d49fef2e 100644 --- a/activerecord/lib/active_record/associations/has_many_through_association.rb +++ b/activerecord/lib/active_record/associations/has_many_through_association.rb @@ -73,7 +73,9 @@ module ActiveRecord # association def build_through_record(record) @through_records[record.object_id] ||= begin - through_record = through_association.build(construct_join_attributes(record)) + ensure_mutable + + through_record = through_association.build through_record.send("#{source_reflection.name}=", record) through_record end diff --git a/activerecord/lib/active_record/associations/through_association.rb b/activerecord/lib/active_record/associations/through_association.rb index f95e5337c2..fd0e90aaf0 100644 --- a/activerecord/lib/active_record/associations/through_association.rb +++ b/activerecord/lib/active_record/associations/through_association.rb @@ -37,9 +37,7 @@ module ActiveRecord # situation it is more natural for the user to just create or modify their join records # directly as required. def construct_join_attributes(*records) - if source_reflection.macro != :belongs_to - raise HasManyThroughCantAssociateThroughHasOneOrManyReflection.new(owner, reflection) - end + ensure_mutable join_attributes = { source_reflection.foreign_key => @@ -73,6 +71,12 @@ module ActiveRecord !owner[through_reflection.foreign_key].nil? end + def ensure_mutable + if source_reflection.macro != :belongs_to + raise HasManyThroughCantAssociateThroughHasOneOrManyReflection.new(owner, reflection) + end + end + def ensure_not_nested if reflection.nested? raise HasManyThroughNestedAssociationsAreReadonly.new(owner, reflection) diff --git a/activerecord/lib/active_record/attribute_methods.rb b/activerecord/lib/active_record/attribute_methods.rb index 3e27e85f02..93c243e7b1 100644 --- a/activerecord/lib/active_record/attribute_methods.rb +++ b/activerecord/lib/active_record/attribute_methods.rb @@ -189,7 +189,7 @@ module ActiveRecord # nil nor empty? (the latter only applies to objects that respond to empty?, most notably Strings). def attribute_present?(attribute) value = read_attribute(attribute) - !value.nil? || (value.respond_to?(:empty?) && !value.empty?) + !value.nil? && !(value.respond_to?(:empty?) && value.empty?) end # Returns the column object for the named attribute. diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb index 594649189d..767c99de4c 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb @@ -86,6 +86,11 @@ module ActiveRecord end end + def schema_cache=(cache) + cache.connection = self + @schema_cache = cache + end + def expire @in_use = false end diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb index d2126a3e19..5b7fa029da 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb @@ -978,6 +978,27 @@ module ActiveRecord end_sql end + # Returns an array of schema names. + def schema_names + query(<<-SQL).flatten + SELECT nspname + FROM pg_namespace + WHERE nspname !~ '^pg_.*' + AND nspname NOT IN ('information_schema') + ORDER by nspname; + SQL + end + + # Creates a schema for the given schema name. + def create_schema schema_name + execute "CREATE SCHEMA #{schema_name}" + end + + # Drops the schema for the given schema name. + def drop_schema schema_name + execute "DROP SCHEMA #{schema_name} CASCADE" + end + # Sets the schema search path to a string of comma-separated schema names. # Names beginning with $ have to be quoted (e.g. $user => '$user'). # See: http://www.postgresql.org/docs/current/static/ddl-schemas.html diff --git a/activerecord/lib/active_record/connection_adapters/schema_cache.rb b/activerecord/lib/active_record/connection_adapters/schema_cache.rb index 962718da56..aad1f9a7ef 100644 --- a/activerecord/lib/active_record/connection_adapters/schema_cache.rb +++ b/activerecord/lib/active_record/connection_adapters/schema_cache.rb @@ -1,26 +1,17 @@ module ActiveRecord module ConnectionAdapters class SchemaCache - attr_reader :columns, :columns_hash, :primary_keys, :tables - attr_reader :connection + attr_reader :columns, :columns_hash, :primary_keys, :tables, :version + attr_accessor :connection def initialize(conn) @connection = conn - @tables = {} - @columns = Hash.new do |h, table_name| - h[table_name] = conn.columns(table_name) - end - - @columns_hash = Hash.new do |h, table_name| - h[table_name] = Hash[columns[table_name].map { |col| - [col.name, col] - }] - end - - @primary_keys = Hash.new do |h, table_name| - h[table_name] = table_exists?(table_name) ? conn.primary_key(table_name) : nil - end + @columns = {} + @columns_hash = {} + @primary_keys = {} + @tables = {} + prepare_default_proc end # A cached lookup for table existence. @@ -30,12 +21,22 @@ module ActiveRecord @tables[name] = connection.table_exists?(name) end + # Add internal cache for table with +table_name+. + def add(table_name) + if table_exists?(table_name) + @primary_keys[table_name] + @columns[table_name] + @columns_hash[table_name] + end + end + # Clears out internal caches def clear! @columns.clear @columns_hash.clear @primary_keys.clear @tables.clear + @version = nil end # Clear out internal caches for table with +table_name+. @@ -45,6 +46,37 @@ module ActiveRecord @primary_keys.delete table_name @tables.delete table_name end + + def marshal_dump + # if we get current version during initialization, it happens stack over flow. + @version = ActiveRecord::Migrator.current_version + [@version] + [:@columns, :@columns_hash, :@primary_keys, :@tables].map do |val| + self.instance_variable_get(val).inject({}) { |h, v| h[v[0]] = v[1]; h } + end + end + + def marshal_load(array) + @version, @columns, @columns_hash, @primary_keys, @tables = array + prepare_default_proc + end + + private + + def prepare_default_proc + @columns.default_proc = Proc.new do |h, table_name| + h[table_name] = connection.columns(table_name) + end + + @columns_hash.default_proc = Proc.new do |h, table_name| + h[table_name] = Hash[columns[table_name].map { |col| + [col.name, col] + }] + end + + @primary_keys.default_proc = Proc.new do |h, table_name| + h[table_name] = table_exists?(table_name) ? connection.primary_key(table_name) : nil + end + end end end end diff --git a/activerecord/lib/active_record/railtie.rb b/activerecord/lib/active_record/railtie.rb index 058dd58efb..516c450f85 100644 --- a/activerecord/lib/active_record/railtie.rb +++ b/activerecord/lib/active_record/railtie.rb @@ -107,7 +107,7 @@ module ActiveRecord config.watchable_files.concat ["#{app.root}/db/schema.rb", "#{app.root}/db/structure.sql"] end - config.after_initialize do + config.after_initialize do |app| ActiveSupport.on_load(:active_record) do ActiveRecord::Base.instantiate_observers @@ -115,6 +115,21 @@ module ActiveRecord ActiveRecord::Base.instantiate_observers end end + + ActiveSupport.on_load(:active_record) do + if app.config.use_schema_cache_dump + filename = File.join(app.config.paths["db"].first, "schema_cache.dump") + if File.file?(filename) + cache = Marshal.load(open(filename, 'rb') { |f| f.read }) + if cache.version == ActiveRecord::Migrator.current_version + ActiveRecord::Base.connection.schema_cache = cache + else + warn "schema_cache.dump is expired. Current version is #{ActiveRecord::Migrator.current_version}, but cache version is #{cache.version}." + end + end + end + end + end end end diff --git a/activerecord/lib/active_record/railties/databases.rake b/activerecord/lib/active_record/railties/databases.rake index cf0092e0e3..f26989ae57 100644 --- a/activerecord/lib/active_record/railties/databases.rake +++ b/activerecord/lib/active_record/railties/databases.rake @@ -372,6 +372,25 @@ db_namespace = namespace :db do task :load_if_ruby => 'db:create' do db_namespace["schema:load"].invoke if ActiveRecord::Base.schema_format == :ruby end + + namespace :cache do + desc 'Create a db/schema_cache.dump file.' + task :dump => :environment do + con = ActiveRecord::Base.connection + filename = File.join(Rails.application.config.paths["db"].first, "schema_cache.dump") + + con.schema_cache.clear! + con.tables.each { |table| con.schema_cache.add(table) } + open(filename, 'wb') { |f| f.write(Marshal.dump(con.schema_cache)) } + end + + desc 'Clear a db/schema_cache.dump file.' + task :clear => :environment do + filename = File.join(Rails.application.config.paths["db"].first, "schema_cache.dump") + FileUtils.rm(filename) if File.exists?(filename) + end + end + end namespace :structure do |