class Sequel::Postgres::PGRow::ArrayRow
Class for row-valued/composite types that are treated as arrays. By default, this is only used for generic PostgreSQL record types, as registered types use HashRow by default.
:nocov:
Attributes
The database type for this class. May be nil if this class done not have a specific database type.
Sets the database type associated with this instance. This is used to override the class's default database type.
Public Class Methods
Create a subclass associated with a specific database type. This is done so that instances of this subclass are automatically casted to the database type when literalizing.
# File lib/sequel/extensions/pg_row.rb, line 113 def self.subclass(db_type) Class.new(self) do @db_type = db_type end end
Public Instance Methods
Return the instance's database type, or the class's database type if the instance has not overridden it.
# File lib/sequel/extensions/pg_row.rb, line 125 def db_type @db_type || self.class.db_type end
Wrap the PGRow::ArrayRow instance in an PGRowOp, allowing you to easily use the PostgreSQL row functions and operators with literal rows.
# File lib/sequel/extensions/pg_row_ops.rb, line 167 def op Sequel.pg_row_op(self) end
Allow automatic parameterization if all values support it.
# File lib/sequel/extensions/pg_row.rb, line 140 def sequel_auto_param_type(ds) if db_type && all?{|v| nil == v || ds.send(:auto_param_type, v)} s = String.new << "::" ds.quote_schema_table_append(s, db_type) s end end
Append SQL fragment related to this object to the sql.
# File lib/sequel/extensions/pg_row.rb, line 130 def sql_literal_append(ds, sql) sql << 'ROW' ds.literal_append(sql, to_a) if db_type sql << '::' ds.quote_schema_table_append(sql, db_type) end end