Class Sequel::Firebird::Database
In: lib/sequel_core/adapters/firebird.rb
Parent: Sequel::Database

Methods

Constants

AUTO_INCREMENT = ''.freeze

Public Class methods

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_core/adapters/firebird.rb, line 14
14:       def initialize(*args)
15:         super
16:         @primary_keys = {}
17:         @primary_key_sequences = {}
18:       end

Public Instance methods

Use Firebird specific syntax for add column

[Source]

    # File lib/sequel_core/adapters/firebird.rb, line 21
21:       def alter_table_sql(table, op)
22:         case op[:op]
23:         when :add_column
24:           "ALTER TABLE #{quote_schema_table(table)} ADD #{column_definition_sql(op)}"
25:         when :drop_column
26:           "ALTER TABLE #{quote_schema_table(table)} DROP #{column_definition_sql(op)}"
27:         when :rename_column
28:           "ALTER TABLE #{quote_schema_table(table)} ALTER #{quote_identifier(op[:name])} TO #{quote_identifier(op[:new_name])}"
29:         when :set_column_type
30:           "ALTER TABLE #{quote_schema_table(table)} ALTER #{quote_identifier(op[:name])} TYPE #{type_literal(op)}"
31:         else
32:           super(table, op)
33:         end
34:       end

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    # File lib/sequel_core/adapters/firebird.rb, line 36
36:       def auto_increment_sql()
37:         AUTO_INCREMENT
38:       end

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    # File lib/sequel_core/adapters/firebird.rb, line 40
40:       def connect(server)
41:         opts = server_opts(server)
42: 
43:         db = Fb::Database.new(
44:           :database => "#{opts[:host]}:#{opts[:database]}",
45:           :username => opts[:user],
46:           :password => opts[:password])
47:         conn = db.connect
48:         conn.downcase_names = true
49:         conn
50:       end

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    # File lib/sequel_core/adapters/firebird.rb, line 52
52:       def create_sequence_sql(name, opts={})
53:         "CREATE SEQUENCE #{quote_identifier(name)}"
54:       end

Creates a table with the columns given in the provided block:

  DB.create_table :posts do
    primary_key :id, :serial
    column :title, :text
    column :content, :text
    index :title
  end

See Schema::Generator. Firebird gets an override because of the mess of creating a generator for auto-incrementing primary keys.

[Source]

    # File lib/sequel_core/adapters/firebird.rb, line 68
68:       def create_table(name, options={}, &block)
69:         options = {:generator=>options} if options.is_a?(Schema::Generator)
70:         statements = create_table_sql_list(name, *((options[:generator] ||= Schema::Generator.new(self, &block)).create_info << options))
71:         begin
72:           execute_ddl(statements[1])
73:         rescue
74:           nil
75:         end if statements[1]
76:         statements[0].flatten.each {|sql| execute_ddl(sql)}
77:       end

[Source]

    # File lib/sequel_core/adapters/firebird.rb, line 79
79:       def create_table_sql_list(name, columns, indexes = nil, options={})
80:         statements = super
81:         drop_seq_statement = nil
82:         columns.each do |c|
83:           if c[:auto_increment]
84:             c[:sequence_name] ||= "seq_#{name}_#{c[:name]}"
85:             unless c[:create_sequence] == false
86:               drop_seq_statement = drop_sequence_sql(c[:sequence_name])
87:               statements << create_sequence_sql(c[:sequence_name])
88:               statements << restart_sequence_sql(c[:sequence_name], {:restart_position => c[:sequence_start_position]}) if c[:sequence_start_position]
89:             end
90:             unless c[:create_trigger] == false
91:               c[:trigger_name] ||= "BI_#{name}_#{c[:name]}"
92:               c[:quoted_name] = quote_identifier(c[:name])
93:               trigger_definition = "begin\nif ((new.\#{c[:quoted_name]} is null) or (new.\#{c[:quoted_name]} = 0)) then\nbegin\nnew.\#{c[:quoted_name]} = next value for \#{c[:sequence_name]};\nend\nend\n"
94:               statements << create_trigger_sql(name, c[:trigger_name], trigger_definition, {:events => [:insert]})
95:             end
96:           end
97:         end
98:         [statements, drop_seq_statement]
99:       end

[Source]

     # File lib/sequel_core/adapters/firebird.rb, line 109
109:       def create_trigger(*args)
110:         self << create_trigger_sql(*args)
111:       end

[Source]

     # File lib/sequel_core/adapters/firebird.rb, line 113
113:       def create_trigger_sql(table, name, definition, opts={})
114:         events = opts[:events] ? Array(opts[:events]) : [:insert, :update, :delete]
115:         whence = opts[:after] ? 'AFTER' : 'BEFORE'
116:         inactive = opts[:inactive] ? 'INACTIVE' : 'ACTIVE'
117:         position = opts[:position] ? opts[:position] : 0
118:         sql = "CREATE TRIGGER \#{quote_identifier(name)} for \#{quote_identifier(table)}\n\#{inactive} \#{whence} \#{events.map{|e| e.to_s.upcase}.join(' OR ')} position \#{position}\nas \#{definition}\n"
119:         sql
120:       end

[Source]

     # File lib/sequel_core/adapters/firebird.rb, line 127
127:       def dataset(opts = nil)
128:         Firebird::Dataset.new(self, opts)
129:       end

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     # File lib/sequel_core/adapters/firebird.rb, line 131
131:       def drop_sequence(name)
132:         self << drop_sequence_sql(name)
133:       end

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     # File lib/sequel_core/adapters/firebird.rb, line 135
135:       def drop_sequence_sql(name)
136:         "DROP SEQUENCE #{quote_identifier(name)}"
137:       end

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     # File lib/sequel_core/adapters/firebird.rb, line 139
139:       def execute(sql, opts={})
140:         log_info(sql)
141:         begin
142:           synchronize(opts[:server]) do |conn|
143:             r = conn.execute(sql)
144:             yield(r) if block_given?
145:             r
146:           end
147:         rescue => e
148:           log_info(e.message)
149:           raise_error(e, :classes=>[Fb::Error])
150:         end
151:       end

Return primary key for the given table.

[Source]

     # File lib/sequel_core/adapters/firebird.rb, line 154
154:       def primary_key(table, server=nil)
155:         synchronize(server){|conn| primary_key_for_table(conn, table)}
156:       end

Returns primary key for the given table. This information is cached, and if the primary key for a table is changed, the @primary_keys instance variable should be reset manually.

[Source]

     # File lib/sequel_core/adapters/firebird.rb, line 161
161:       def primary_key_for_table(conn, table)
162:         @primary_keys[quote_identifier(table)] ||= conn.table_primary_key(quote_identifier(table))
163:       end

[Source]

     # File lib/sequel_core/adapters/firebird.rb, line 165
165:       def restart_sequence(*args)
166:         self << restart_sequence_sql(*args)
167:       end

[Source]

     # File lib/sequel_core/adapters/firebird.rb, line 169
169:       def restart_sequence_sql(name, opts={})
170:         seq_name = quote_identifier(name)
171:         "ALTER SEQUENCE #{seq_name} RESTART WITH #{opts[:restart_position]}"
172:       end

[Source]

     # File lib/sequel_core/adapters/firebird.rb, line 174
174:       def sequences(opts={})
175:         ds = self["rdb$generators""rdb$generators"].server(opts[:server]).filter("rdb$system_flag""rdb$system_flag" => 0).select("rdb$generator_name""rdb$generator_name")
176:         block_given? ? yield(ds) : ds.map{|r| ds.send(:output_identifier, r["rdb$generator_name""rdb$generator_name"])}
177:       end

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     # File lib/sequel_core/adapters/firebird.rb, line 179
179:       def tables(opts={})
180:         ds = self["rdb$relations""rdb$relations"].server(opts[:server]).filter("rdb$view_blr""rdb$view_blr" => nil, Sequel::SQL::Function.new(:COALESCE, "rdb$system_flag""rdb$system_flag", 0) => 0).select("rdb$relation_name""rdb$relation_name")
181:         block_given? ? yield(ds) : ds.map{|r| ds.send(:output_identifier, r["rdb$relation_name""rdb$relation_name"])}
182:       end

[Source]

     # File lib/sequel_core/adapters/firebird.rb, line 184
184:       def transaction(server=nil)
185:         synchronize(server) do |conn|
186:           return yield(conn) if @transactions.include?(Thread.current)
187:           log_info("Transaction.begin")
188:           conn.transaction
189:           begin
190:             @transactions << Thread.current
191:             yield(conn)
192:           rescue ::Exception => e
193:             log_info("Transaction.rollback")
194:             conn.rollback
195:             transaction_error(e, Fb::Error)
196:           ensure
197:             unless e
198:               log_info("Transaction.commit")
199:               conn.commit
200:             end
201:             @transactions.delete(Thread.current)
202:           end
203:         end
204:       end

[Validate]