Module Sequel::JDBC::Derby::DatabaseMethods
In: lib/sequel/adapters/jdbc/derby.rb

Instance methods for Derby Database objects accessed via JDBC.

Methods

Included Modules

::Sequel::JDBC::Transactions

Constants

PRIMARY_KEY_INDEX_RE = /\Asql\d+\z/i.freeze
DATABASE_ERROR_REGEXPS = { /The statement was aborted because it would have caused a duplicate key value in a unique or primary key constraint or unique index/ => UniqueConstraintViolation, /violation of foreign key constraint/ => ForeignKeyConstraintViolation, /The check constraint .+ was violated/ => CheckConstraintViolation, /cannot accept a NULL value/ => NotNullConstraintViolation, /A lock could not be obtained due to a deadlock/ => SerializationFailure, }.freeze

Public Instance methods

Derby doesn‘t support casting integer to varchar, only integer to char, and char(254) appears to have the widest support (with char(255) failing). This does add a bunch of extra spaces at the end, but those will be trimmed elsewhere.

[Source]

    # File lib/sequel/adapters/jdbc/derby.rb, line 27
27:         def cast_type_literal(type)
28:           (type == String) ? 'CHAR(254)' : super
29:         end

Derby uses the :derby database type.

[Source]

    # File lib/sequel/adapters/jdbc/derby.rb, line 32
32:         def database_type
33:           :derby
34:         end

Derby uses an IDENTITY sequence for autoincrementing columns.

[Source]

    # File lib/sequel/adapters/jdbc/derby.rb, line 37
37:         def serial_primary_key_options
38:           {:primary_key => true, :type => :integer, :identity=>true, :start_with=>1}
39:         end

Derby supports transaction DDL statements.

[Source]

    # File lib/sequel/adapters/jdbc/derby.rb, line 51
51:         def supports_transactional_ddl?
52:           true
53:         end

The SVN version of the database.

[Source]

    # File lib/sequel/adapters/jdbc/derby.rb, line 42
42:         def svn_version
43:           @svn_version ||= begin
44:             v = synchronize{|c| c.get_meta_data.get_database_product_version}
45:             v =~ /\((\d+)\)\z/
46:             $1.to_i
47:           end
48:         end

[Validate]