122 lines
3.7 KiB
Ruby
122 lines
3.7 KiB
Ruby
|
module ActiveRecord
|
||
|
|
# This class is used to dump the database schema for some connection to some
|
||
|
|
# output format (i.e., ActiveRecord::Schema).
|
||
|
|
class SchemaDumper #:nodoc:
|
||
|
|
private_class_method :new
|
||
|
|
|
||
|
|
# A list of tables which should not be dumped to the schema.
|
||
|
|
# Acceptable values are strings as well as regexp.
|
||
|
|
# This setting is only used if ActiveRecord::Base.schema_format == :ruby
|
||
|
|
cattr_accessor :ignore_tables
|
||
|
|
@@ignore_tables = []
|
||
|
|
|
||
|
|
def self.dump(connection=ActiveRecord::Base.connection, stream=STDOUT)
|
||
|
|
new(connection).dump(stream)
|
||
|
|
stream
|
||
|
|
end
|
||
|
|
|
||
|
|
def dump(stream)
|
||
|
|
header(stream)
|
||
|
|
tables(stream)
|
||
|
|
trailer(stream)
|
||
|
|
stream
|
||
|
|
end
|
||
|
|
|
||
|
|
private
|
||
|
|
|
||
|
|
def initialize(connection)
|
||
|
|
@connection = connection
|
||
|
|
@types = @connection.native_database_types
|
||
|
|
@info = @connection.select_one("SELECT * FROM schema_info") rescue nil
|
||
|
|
end
|
||
|
|
|
||
|
|
def header(stream)
|
||
|
|
define_params = @info ? ":version => #{@info['version']}" : ""
|
||
|
|
|
||
|
|
stream.puts <<HEADER
|
||
|
|
# This file is autogenerated. Instead of editing this file, please use the
|
||
|
|
# migrations feature of ActiveRecord to incrementally modify your database, and
|
||
|
|
# then regenerate this schema definition.
|
||
|
|
|
||
|
|
ActiveRecord::Schema.define(#{define_params}) do
|
||
|
|
|
||
|
|
HEADER
|
||
|
|
end
|
||
|
|
|
||
|
|
def trailer(stream)
|
||
|
|
stream.puts "end"
|
||
|
|
end
|
||
|
|
|
||
|
|
def tables(stream)
|
||
|
|
@connection.tables.sort.each do |tbl|
|
||
|
|
next if ["schema_info", ignore_tables].flatten.any? do |ignored|
|
||
|
|
case ignored
|
||
|
|
when String: tbl == ignored
|
||
|
|
when Regexp: tbl =~ ignored
|
||
|
|
else
|
||
|
|
raise StandardError, 'ActiveRecord::SchemaDumper.ignore_tables accepts an array of String and / or Regexp values.'
|
||
|
|
end
|
||
|
|
end
|
||
|
|
table(tbl, stream)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
def table(table, stream)
|
||
|
|
columns = @connection.columns(table)
|
||
|
|
begin
|
||
|
|
tbl = StringIO.new
|
||
|
|
|
||
|
|
if @connection.respond_to?(:pk_and_sequence_for)
|
||
|
|
pk, pk_seq = @connection.pk_and_sequence_for(table)
|
||
|
|
end
|
||
|
|
pk ||= 'id'
|
||
|
|
|
||
|
|
tbl.print " create_table #{table.inspect}"
|
||
|
|
if columns.detect { |c| c.name == pk }
|
||
|
|
if pk != 'id'
|
||
|
|
tbl.print %Q(, :primary_key => "#{pk}")
|
||
|
|
end
|
||
|
|
else
|
||
|
|
tbl.print ", :id => false"
|
||
|
|
end
|
||
|
|
tbl.print ", :force => true"
|
||
|
|
tbl.puts " do |t|"
|
||
|
|
|
||
|
|
columns.each do |column|
|
||
|
|
raise StandardError, "Unknown type '#{column.sql_type}' for column '#{column.name}'" if @types[column.type].nil?
|
||
|
|
next if column.name == pk
|
||
|
|
tbl.print " t.column #{column.name.inspect}, #{column.type.inspect}"
|
||
|
|
tbl.print ", :limit => #{column.limit.inspect}" if column.limit != @types[column.type][:limit]
|
||
|
|
tbl.print ", :default => #{column.default.inspect}" if !column.default.nil?
|
||
|
|
tbl.print ", :null => false" if !column.null
|
||
|
|
tbl.puts
|
||
|
|
end
|
||
|
|
|
||
|
|
tbl.puts " end"
|
||
|
|
tbl.puts
|
||
|
|
|
||
|
|
indexes(table, tbl)
|
||
|
|
|
||
|
|
tbl.rewind
|
||
|
|
stream.print tbl.read
|
||
|
|
rescue => e
|
||
|
|
stream.puts "# Could not dump table #{table.inspect} because of following #{e.class}"
|
||
|
|
stream.puts "# #{e.message}"
|
||
|
|
stream.puts
|
||
|
|
end
|
||
|
|
|
||
|
|
stream
|
||
|
|
end
|
||
|
|
|
||
|
|
def indexes(table, stream)
|
||
|
|
indexes = @connection.indexes(table)
|
||
|
|
indexes.each do |index|
|
||
|
|
stream.print " add_index #{index.table.inspect}, #{index.columns.inspect}, :name => #{index.name.inspect}"
|
||
|
|
stream.print ", :unique => true" if index.unique
|
||
|
|
stream.puts
|
||
|
|
end
|
||
|
|
stream.puts unless indexes.empty?
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|