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 29
29:         def cast_type_literal(type)
30:           (type == String) ? 'CHAR(254)' : super
31:         end

Derby uses the :derby database type.

[Source]

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

Derby uses an IDENTITY sequence for autoincrementing columns.

[Source]

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

Derby supports transaction DDL statements.

[Source]

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

The SVN version of the database.

[Source]

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

[Validate]