Class: Sequel::Postgres::Database

Class | Sequel::Postgres::Database
In: | lib/sequel/adapters/postgres.rb
Parent: | Sequel::Database

Database class for PostgreSQL databases used with Sequel and the pg, postgres, or postgres-pr driver.

### Methods

connect dataset execute execute_insert new

### Included Modules

Sequel::Postgres::DatabaseMethods

### Public Class methods

new(*args)

Add the primary_keys and primary_key_sequences instance variables, so we can get the correct return values for inserted rows.

[Source]

         # File lib/sequel/adapters/postgres.rb, line 183
    183:       def initialize(*args)
    184:         super
    185:         @primary_keys = {}
    186:         @primary_key_sequences = {}
    187:       end

### Public Instance methods

connect(server)

Connects to the database. In addition to the standard database options, using the :encoding or :charset option changes the client encoding for the connection.

[Source]

         # File lib/sequel/adapters/postgres.rb, line 192
    192:       def connect(server)
    193:         opts = server_opts(server)
    194:         conn = Adapter.connect(
    195:           (opts[:host] unless blank_object?(opts[:host])),
    196:           opts[:port] || 5432,
    197:           nil, '',
    198:           opts[:database],
    199:           opts[:user],
    200:           opts[:password]
    201:         )
    202:         if encoding = opts[:encoding] || opts[:charset]
    203:           if conn.respond_to?(:set_client_encoding)
    204:             conn.set_client_encoding(encoding)
    205:           else
    206:             conn.async_exec("set client_encoding to '#{encoding}'")
    207:           end
    208:         end
    209:         conn.db = self
    210:         conn.apply_connection_settings
    211:         conn
    212:       end

dataset(opts = nil)

Return instance of Sequel::Postgres::Dataset with the given options.

[Source]

         # File lib/sequel/adapters/postgres.rb, line 215
    215:       def dataset(opts = nil)
    216:         Postgres::Dataset.new(self, opts)
    217:       end

execute(sql, opts={}, &block)

Execute the given SQL with the given args on an available connection.

[Source]

         # File lib/sequel/adapters/postgres.rb, line 220
    220:       def execute(sql, opts={}, &block)
    221:         return execute_prepared_statement(sql, opts, &block) if Symbol === sql
    222:         begin
    223:           log_info(sql, opts[:arguments])
    224:           synchronize(opts[:server]){|conn| conn.execute(sql, opts[:arguments], &block)}
    225:         rescue => e
    226:           log_info(e.message)
    227:           raise_error(e, :classes=>CONVERTED_EXCEPTIONS)
    228:         end
    229:       end

execute_insert(sql, opts={})

Insert the values into the table and return the primary key (if automatically generated).

[Source]

         # File lib/sequel/adapters/postgres.rb, line 233
    233:       def execute_insert(sql, opts={})
    234:         return execute(sql, opts) if Symbol === sql
    235:         begin
    236:           log_info(sql, opts[:arguments])
    237:           synchronize(opts[:server]) do |conn|
    238:             conn.execute(sql, opts[:arguments])
    239:             insert_result(conn, opts[:table], opts[:values])
    240:           end
    241:         rescue => e
    242:           log_info(e.message)
    243:           raise_error(e, :classes=>CONVERTED_EXCEPTIONS)
    244:         end
    245:       end

[Validate]