Module: Sequel::Postgres::PGArray::DatabaseMethods

Defined in:
lib/sequel/extensions/pg_array.rb

Constant Summary collapse

APOS = 
"'".freeze
DOUBLE_APOS = 
"''".freeze
ESCAPE_RE = 
/("|\\)/.freeze
ESCAPE_REPLACEMENT = 
'\\\\\1'.freeze
BLOB_RANGE = 
1...-1

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(db) ⇒ Object

Create the local hash of database type strings to schema type symbols, used for array types local to this database.



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# File 'lib/sequel/extensions/pg_array.rb', line 226

def self.extended(db)
  db.instance_eval do
    @pg_array_schema_types ||= {}
    copy_conversion_procs([1009, 1007, 1016, 1231, 1022, 1000, 1001, 1182, 1183, 1270, 1005, 1028, 1021, 1014, 1015])
    [:string_array, :integer_array, :decimal_array, :float_array, :boolean_array, :blob_array, :date_array, :time_array, :datetime_array].each do |v|
      @schema_type_classes[v] = PGArray
    end
  end

  procs = db.conversion_procs
  procs[1115] = Creator.new("timestamp without time zone", procs[1114])
  procs[1185] = Creator.new("timestamp with time zone", procs[1184])
end

Instance Method Details

#bound_variable_arg(arg, conn) ⇒ Object

Handle arrays in bound variables



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# File 'lib/sequel/extensions/pg_array.rb', line 241

def bound_variable_arg(arg, conn)
  case arg
  when PGArray
    bound_variable_array(arg.to_a)
  when Array
    bound_variable_array(arg)
  else
    super
  end
end

#register_array_type(db_type, opts = OPTS, &block) ⇒ Object

Register a database specific array type. This can be used to support different array types per Database. Use of this method does not affect global state, unlike PGArray.register. See PGArray.register for possible options.



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# File 'lib/sequel/extensions/pg_array.rb', line 256

def register_array_type(db_type, opts=OPTS, &block)
  opts = {:type_procs=>conversion_procs, :typecast_method_map=>@pg_array_schema_types, :typecast_methods_module=>(class << self; self; end)}.merge(opts)
  unless (opts.has_key?(:scalar_oid) || block) && opts.has_key?(:oid)
    array_oid, scalar_oid = from(:pg_type).where(:typname=>db_type.to_s).get([:typarray, :oid])
    opts[:scalar_oid] = scalar_oid unless opts.has_key?(:scalar_oid) || block
    opts[:oid] = array_oid unless opts.has_key?(:oid)
  end
  PGArray.register(db_type, opts, &block)
  @schema_type_classes[:"#{opts[:typecast_method] || opts[:type_symbol] || db_type}_array"] = PGArray
end

#schema_type_class(type) ⇒ Object

Return PGArray if this type matches any supported array type.



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# File 'lib/sequel/extensions/pg_array.rb', line 268

def schema_type_class(type)
  super || (ARRAY_TYPES.each_value{|v| return PGArray if type == v}; nil)
end