Module Sequel::Postgres
In: lib/sequel/adapters/postgres.rb
lib/sequel/adapters/shared/postgres.rb
lib/sequel/extensions/pg_auto_parameterize.rb
lib/sequel/extensions/pg_statement_cache.rb
lib/sequel/extensions/pg_array.rb
lib/sequel/extensions/pg_json.rb
lib/sequel/extensions/pg_array_ops.rb
lib/sequel/extensions/pg_hstore.rb
lib/sequel/extensions/pg_hstore_ops.rb
lib/sequel/extensions/pg_inet.rb

Top level module for holding all PostgreSQL-related modules and classes for Sequel. There are a few module level accessors that are added via metaprogramming. These are:

  • client_min_messages (only available when using the native adapter) - Change the minimum level of messages that PostgreSQL will send to the the client. The PostgreSQL default is NOTICE, the Sequel default is WARNING. Set to nil to not change the server default.
  • force_standard_strings - Set to false to not force the use of standard strings
  • use_iso_date_format (only available when using the native adapter) - Set to false to not change the date format to ISO. This disables one of Sequel‘s optimizations.

Changes in these settings only affect future connections. To make sure that they are applied, they should generally be called right after the Database object is instantiated and before a connection is actually made. For example, to use whatever the server defaults are:

  DB = Sequel.postgres(...)
  Sequel::Postgres.client_min_messages = nil
  Sequel::Postgres.force_standard_strings = false
  Sequel::Postgres.use_iso_date_format = false
  # A connection to the server is not made until here
  DB[:t].all

The reason they can‘t be done earlier is that the Sequel::Postgres module is not loaded until a Database object which uses PostgreSQL is created.

Methods

bytea   date   float   integer  

Classes and Modules

Module Sequel::Postgres::ArrayOpMethods
Module Sequel::Postgres::AutoParameterize
Module Sequel::Postgres::DatabaseMethods
Module Sequel::Postgres::DatasetMethods
Module Sequel::Postgres::HStoreOpMethods
Module Sequel::Postgres::InetDatabaseMethods
Module Sequel::Postgres::InetDatasetMethods
Module Sequel::Postgres::JSONDatabaseMethods
Module Sequel::Postgres::StatementCache
Class Sequel::Postgres::ArrayOp
Class Sequel::Postgres::HStore
Class Sequel::Postgres::HStoreOp
Class Sequel::Postgres::JSONArray
Class Sequel::Postgres::JSONHash
Class Sequel::Postgres::PGArray
Class Sequel::Postgres::PGDecimalArray
Class Sequel::Postgres::PGFloatArray
Class Sequel::Postgres::PGIntegerArray
Class Sequel::Postgres::PGNumericArray
Class Sequel::Postgres::PGStringArray

Constants

NAN = 0.0/0.0
PLUS_INFINITY = 1.0/0.0
MINUS_INFINITY = -1.0/0.0
NAN_STR = 'NaN'.freeze
PLUS_INFINITY_STR = 'Infinity'.freeze
MINUS_INFINITY_STR = '-Infinity'.freeze
TRUE_STR = 't'.freeze
DASH_STR = '-'.freeze
TYPE_TRANSLATOR = tt = Class.new do def boolean(s) s == TRUE_STR end
CONVERTED_EXCEPTIONS = []   Array of exceptions that need to be converted. JDBC uses NativeExceptions, the native adapter uses PGError.
PG_TYPES = {} unless defined?(PG_TYPES)
CAST_JSON = '::json'.freeze
PG_TYPES = {} unless defined?(PG_TYPES)
PG_NAMED_TYPES = {} unless defined?(PG_NAMED_TYPES)
PG_TYPES = {} unless defined?(PG_TYPES)

Attributes

client_min_messages  [RW]  By default, Sequel sets the minimum level of log messages sent to the client to WARNING, where PostgreSQL uses a default of NOTICE. This is to avoid a lot of mostly useless messages when running migrations, such as a couple of lines for every serial primary key field.
force_standard_strings  [RW]  By default, Sequel forces the use of standard strings, so that ’\’ is interpreted as \ and not \. While PostgreSQL <9.1 defaults to interpreting plain strings, newer versions use standard strings by default. Sequel assumes that SQL standard strings will be used. Setting this to false means Sequel will use the database‘s default.

Public Instance methods

[Source]

     # File lib/sequel/adapters/postgres.rb, line 102
102:       def bytea(s) ::Sequel::SQL::Blob.new(Adapter.unescape_bytea(s)) end

[Source]

     # File lib/sequel/adapters/postgres.rb, line 116
116:       def date(s) ::Date.new(*s.split(DASH_STR).map{|x| x.to_i}) end

[Source]

     # File lib/sequel/adapters/postgres.rb, line 104
104:       def float(s) 
105:         case s
106:         when NAN_STR
107:           NAN
108:         when PLUS_INFINITY_STR
109:           PLUS_INFINITY
110:         when MINUS_INFINITY_STR
111:           MINUS_INFINITY
112:         else
113:           s.to_f 
114:         end
115:       end

[Source]

     # File lib/sequel/adapters/postgres.rb, line 103
103:       def integer(s) s.to_i end

[Validate]