module ActiveRecord::ConnectionAdapters::PostgreSQLColumn::Cast
Constants
- ARRAY_ESCAPE
- HstorePair
Public Instance Methods
array_to_string(value, column, adapter)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 70 def array_to_string(value, column, adapter) casted_values = value.map do |val| if String === val if val == "NULL" "\"#{val}\"" else quote_and_escape(adapter.type_cast(val, column, true)) end else adapter.type_cast(val, column, true) end end "{#{casted_values.join(',')}}" end
cidr_to_string(object)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 113 def cidr_to_string(object) if IPAddr === object "#{object.to_s}/#{object.instance_variable_get(:@mask_addr).to_s(2).count('1')}" else object end end
hstore_to_string(object, array_member = false)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 38 def hstore_to_string(object, array_member = false) if Hash === object string = object.map { |k, v| "#{escape_hstore(k)}=>#{escape_hstore(v)}" }.join(',') string = escape_hstore(string) if array_member string else object end end
json_to_string(object)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 62 def json_to_string(object) if Hash === object || Array === object ActiveSupport::JSON.encode(object) else object end end
point_to_string(point)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 5 def point_to_string(point) "(#{point[0]},#{point[1]})" end
range_to_string(object)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 85 def range_to_string(object) from = object.begin.respond_to?(:infinite?) && object.begin.infinite? ? '' : object.begin to = object.end.respond_to?(:infinite?) && object.end.infinite? ? '' : object.end "[#{from},#{to}#{object.exclude_end? ? ')' : ']'}" end
string_to_array(string, oid)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 121 def string_to_array(string, oid) parse_pg_array(string).map {|val| type_cast_array(oid, val)} end
string_to_bit(value)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 29 def string_to_bit(value) case value when /^0x/i value[2..-1].hex.to_s(2) # Hexadecimal notation else value # Bit-string notation end end
string_to_cidr(string)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 99 def string_to_cidr(string) if string.nil? nil elsif String === string begin IPAddr.new(string) rescue ArgumentError nil end else string end end
string_to_hstore(string)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 48 def string_to_hstore(string) if string.nil? nil elsif String === string Hash[string.scan(HstorePair).map { |k, v| v = v.upcase == 'NULL' ? nil : v.gsub(/\A"(.*)"\Z/m,'\1').gsub(/\(.)/, '\1') k = k.gsub(/\A"(.*)"\Z/m,'\1').gsub(/\(.)/, '\1') [k, v] }] else string end end
string_to_json(string)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 91 def string_to_json(string) if String === string ActiveSupport::JSON.decode(string) else string end end
string_to_point(string)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 9 def string_to_point(string) if string[0] == '(' && string[-1] == ')' string = string[1...-1] end string.split(',').map{ |v| Float(v) } end
string_to_time(string)
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Calls superclass method
# File lib/active_record/connection_adapters/postgresql/cast.rb, line 16 def string_to_time(string) return string unless String === string case string when 'infinity'; Float::INFINITY when '-infinity'; -Float::INFINITY when / BC$/ super("-" + string.sub(/ BC$/, "")) else super end end
Private Instance Methods
escape_hstore(value)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 133 def escape_hstore(value) if value.nil? 'NULL' else if value == "" '""' else '"%s"' % value.to_s.gsub(/(["\])/, '\\\1') end end end
quote_and_escape(value)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 147 def quote_and_escape(value) case value when "NULL", Numeric value else value = value.gsub(/\/, ARRAY_ESCAPE) value.gsub!(/"/,"\\\"") "\"#{value}\"" end end
type_cast_array(oid, value)
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# File lib/active_record/connection_adapters/postgresql/cast.rb, line 158 def type_cast_array(oid, value) if ::Array === value value.map {|item| type_cast_array(oid, item)} else oid.type_cast value end end