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Versions: 15
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Contents
# This class handels the SQLite3-specific behaviour for columns.
class Baza::Driver::Sqlite3::Columns
attr_reader :db
# Constructor. This should not be called manually.
def initialize(args)
@db = args.fetch(:db)
end
DATA_SQL_ALLOWED_KEYS = [:name, :type, :maxlength, :autoincr, :primarykey, :null, :default, :default_func, :renames, :after, :renames].freeze
# Returns SQL for a knjdb-compatible hash.
def data_sql(data)
data.each_key do |key|
raise "Invalid key: '#{key}' (#{key.class.name})." unless DATA_SQL_ALLOWED_KEYS.include?(key)
end
raise "No type given." unless data[:type]
type = data[:type].to_sym
if type == :enum
type = :varchar
data.delete(:maxlength)
end
data[:maxlength] = 255 if type == :varchar && !data.key?(:maxlength)
data[:maxlength] = 11 if type == :int && !data.key?(:maxlength) && !data[:autoincr] && !data[:primarykey]
type = :integer if @db.int_types.index(type) && (data[:autoincr] || data[:primarykey])
sql = "`#{data.fetch(:name)}` #{type}"
sql << "(#{data.fetch(:maxlength)})" if data[:maxlength] && !data[:autoincr]
sql << " PRIMARY KEY" if data[:primarykey]
sql << " AUTOINCREMENT" if data[:autoincr]
if !data[:null] && data.key?(:null)
sql << " NOT NULL"
data[:default] = 0 if !data.key?(:default) || !data[:default] && type == :int
end
if data.key?(:default_func)
sql << " DEFAULT #{data[:default_func]}"
elsif data.key?(:default) && data[:default] != false
sql << " DEFAULT #{@db.sqlval(data.fetch(:default))}"
end
sql
end
end
Version data entries
15 entries across 15 versions & 1 rubygems