### Home Classes Methods

### In Files

- lib/sequel/adapters/shared/firebird.rb

### Methods

- #alter_table_sql
- #auto_increment_sql
- #clear_primary_key
- #create_sequence_sql
- #create_table_from_generator
- #create_table_sql_list
- #create_trigger
- #create_trigger_sql
- #database_type
- #drop_sequence
- #drop_sequence_sql
- #primary_key
- #remove_cached_schema
- #restart_sequence
- #restart_sequence_sql
- #sequences
- #tables
- #tables_or_views
- #type_literal_generic_string
- #views

### Files

- CHANGELOG
- MIT-LICENSE
- README.rdoc
- active_record.rdoc
- advanced_associations.rdoc
- association_basics.rdoc
- cheat_sheet.rdoc
- dataset_basics.rdoc
- dataset_filtering.rdoc
- mass_assignment.rdoc
- migration.rdoc
- model_hooks.rdoc
- opening_databases.rdoc
- prepared_statements.rdoc
- querying.rdoc
- reflection.rdoc
- 1.0.txt
- 1.1.txt
- 1.3.txt
- 1.4.0.txt
- 1.5.0.txt
- 2.0.0.txt
- 2.1.0.txt
- 2.10.0.txt
- 2.11.0.txt
- 2.12.0.txt
- 2.2.0.txt
- 2.3.0.txt
- 2.4.0.txt
- 2.5.0.txt
- 2.6.0.txt
- 2.7.0.txt
- 2.8.0.txt
- 2.9.0.txt
- 3.0.0.txt
- 3.1.0.txt
- 3.10.0.txt
- 3.11.0.txt
- 3.12.0.txt
- 3.13.0.txt
- 3.14.0.txt
- 3.15.0.txt
- 3.16.0.txt
- 3.17.0.txt
- 3.18.0.txt
- 3.19.0.txt
- 3.2.0.txt
- 3.20.0.txt
- 3.21.0.txt
- 3.22.0.txt
- 3.23.0.txt
- 3.24.0.txt
- 3.25.0.txt
- 3.26.0.txt
- 3.27.0.txt
- 3.28.0.txt
- 3.29.0.txt
- 3.3.0.txt
- 3.30.0.txt
- 3.31.0.txt
- 3.32.0.txt
- 3.33.0.txt
- 3.4.0.txt
- 3.5.0.txt
- 3.6.0.txt
- 3.7.0.txt
- 3.8.0.txt
- 3.9.0.txt
- schema_modification.rdoc
- sharding.rdoc
- sql.rdoc
- testing.rdoc
- transactions.rdoc
- validations.rdoc
- virtual_rows.rdoc

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Quicksearch

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No matching classes.

# Sequel::Firebird::DatabaseMethods

### Constants

AUTO_INCREMENT
TEMPORARY

### Public Instance Methods

clear_primary_key(*tables) click to toggle source

       # File lib/sequel/adapters/shared/firebird.rb, line 7
    7:       def clear_primary_key(*tables)
    8:         tables.each{|t| @primary_keys.delete(dataset.send(:input_identifier, t))}
    9:       end

create_trigger(*args) click to toggle source

        # File lib/sequel/adapters/shared/firebird.rb, line 11
    11:       def create_trigger(*args)
    12:         self << create_trigger_sql(*args)
    13:       end

database_type() click to toggle source

        # File lib/sequel/adapters/shared/firebird.rb, line 15
    15:       def database_type
    16:         :firebird
    17:       end

drop_sequence(name) click to toggle source

        # File lib/sequel/adapters/shared/firebird.rb, line 19
    19:       def drop_sequence(name)
    20:         self << drop_sequence_sql(name)
    21:       end

primary_key(table) click to toggle source

Return primary key for the given table.

        # File lib/sequel/adapters/shared/firebird.rb, line 24
    24:       def primary_key(table)
    25:         t = dataset.send(:input_identifier, table)
    26:         @primary_keys.fetch(t) do
    27:           pk = fetch("SELECT RDB$FIELD_NAME FROM RDB$INDEX_SEGMENTS NATURAL JOIN RDB$RELATION_CONSTRAINTS WHERE RDB$CONSTRAINT_TYPE = 'PRIMARY KEY' AND RDB$RELATION_NAME = ?", t).single_value
    28:           @primary_keys[t] = dataset.send(:output_identifier, pk.rstrip) if pk
    29:         end
    30:       end

restart_sequence(*args) click to toggle source

        # File lib/sequel/adapters/shared/firebird.rb, line 32
    32:       def restart_sequence(*args)
    33:         self << restart_sequence_sql(*args)
    34:       end

sequences(opts={}) click to toggle source

        # File lib/sequel/adapters/shared/firebird.rb, line 36
    36:       def sequences(opts={})
    37:         ds = self[:"rdb$generators"].server(opts[:server]).filter(:"rdb$system_flag" => 0).select(:"rdb$generator_name")
    38:         block_given? ? yield(ds) : ds.map{|r| ds.send(:output_identifier, r[:"rdb$generator_name"])}
    39:       end

tables(opts={}) click to toggle source

        # File lib/sequel/adapters/shared/firebird.rb, line 41
    41:       def tables(opts={})
    42:         tables_or_views(0, opts)
    43:       end

views(opts={}) click to toggle source

        # File lib/sequel/adapters/shared/firebird.rb, line 45
    45:       def views(opts={})
    46:         tables_or_views(1, opts)
    47:       end

### Private Instance Methods

alter_table_sql(table, op) click to toggle source

Use Firebird specific syntax for add column

        # File lib/sequel/adapters/shared/firebird.rb, line 52
    52:       def alter_table_sql(table, op)
    53:         case op[:op]
    54:         when :add_column
    55:           "ALTER TABLE #{quote_schema_table(table)} ADD #{column_definition_sql(op)}"
    56:         when :drop_column
    57:           "ALTER TABLE #{quote_schema_table(table)} DROP #{column_definition_sql(op)}"
    58:         when :rename_column
    59:           "ALTER TABLE #{quote_schema_table(table)} ALTER #{quote_identifier(op[:name])} TO #{quote_identifier(op[:new_name])}"
    60:         when :set_column_type
    61:           "ALTER TABLE #{quote_schema_table(table)} ALTER #{quote_identifier(op[:name])} TYPE #{type_literal(op)}"
    62:         else
    63:           super(table, op)
    64:         end
    65:       end

auto_increment_sql() click to toggle source

        # File lib/sequel/adapters/shared/firebird.rb, line 67
    67:       def auto_increment_sql()
    68:         AUTO_INCREMENT
    69:       end

create_sequence_sql(name, opts={}) click to toggle source

        # File lib/sequel/adapters/shared/firebird.rb, line 71
    71:       def create_sequence_sql(name, opts={})
    72:         "CREATE SEQUENCE #{quote_identifier(name)}"
    73:       end

create_table_from_generator(name, generator, options) click to toggle source

Firebird gets an override because of the mess of creating a sequence and trigger for auto-incrementing primary keys.

        # File lib/sequel/adapters/shared/firebird.rb, line 77
    77:       def create_table_from_generator(name, generator, options)
    78:         drop_statement, create_statements = create_table_sql_list(name, generator, options)
    79:         (execute_ddl(drop_statement) rescue nil) if drop_statement
    80:         create_statements.each{|sql| execute_ddl(sql)}
    81:       end

create_table_sql_list(name, generator, options={}) click to toggle source

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

create_trigger_sql(table, name, definition, opts={}) click to toggle source

         # File lib/sequel/adapters/shared/firebird.rb, line 112
    112:       def create_trigger_sql(table, name, definition, opts={})
    113:         events = opts[:events] ? Array(opts[:events]) : [:insert, :update, :delete]
    114:         whence = opts[:after] ? 'AFTER' : 'BEFORE'
    115:         inactive = opts[:inactive] ? 'INACTIVE' : 'ACTIVE'
    116:         position = opts.fetch(:position, 0)
    117:         sql =           CREATE TRIGGER #{quote_identifier(name)} for #{quote_identifier(table)}          #{inactive} #{whence} #{events.map{|e| e.to_s.upcase}.join(' OR ')} position #{position}          as #{definition}
    118:         sql
    119:       end

drop_sequence_sql(name) click to toggle source

         # File lib/sequel/adapters/shared/firebird.rb, line 125
    125:       def drop_sequence_sql(name)
    126:         "DROP SEQUENCE #{quote_identifier(name)}"
    127:       end

remove_cached_schema(table) click to toggle source

         # File lib/sequel/adapters/shared/firebird.rb, line 129
    129:       def remove_cached_schema(table)
    130:         clear_primary_key(table)
    131:         super
    132:       end

restart_sequence_sql(name, opts={}) click to toggle source

         # File lib/sequel/adapters/shared/firebird.rb, line 134
    134:       def restart_sequence_sql(name, opts={})
    135:         seq_name = quote_identifier(name)
    136:         "ALTER SEQUENCE #{seq_name} RESTART WITH #{opts[:restart_position]}"
    137:       end

tables_or_views(type, opts) click to toggle source

         # File lib/sequel/adapters/shared/firebird.rb, line 139
    139:       def tables_or_views(type, opts)
    140:         ds = self[:"rdb$relations"].server(opts[:server]).filter(:"rdb$relation_type" => type, Sequel::SQL::Function.new(:COALESCE, :"rdb$system_flag", 0) => 0).select(:"rdb$relation_name")
    141:         ds.map{|r| ds.send(:output_identifier, r[:"rdb$relation_name"].rstrip)}
    142:       end

type_literal_generic_string(column) click to toggle source

         # File lib/sequel/adapters/shared/firebird.rb, line 144
    144:       def type_literal_generic_string(column)
    145:         column[:text] ? :"BLOB SUB_TYPE TEXT" : super
    146:       end

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