This class represents a composite type expression reference.
Access a member of the composite type if given a symbol or an SQL::Identifier. For all other access, assuming the pg_array_ops extension is loaded and that it represents an array access. In either case, return a PgRowOp so that access can be cascaded.
# File lib/sequel/extensions/pg_row_ops.rb, line 106 def [](member) case member when Symbol, SQL::Identifier PGRowOp.new(QUALIFY, [self, member]) else PGRowOp.wrap(Sequel.pg_array_op(self)[member]) end end
Use the (identifier.*) syntax to indicate that this expression represents the composite type of one of the tables being referenced, if it has the same name as one of the columns. If the cast_to argument is given, also cast the expression to that type (which should be a symbol representing the composite type). This is used if you want to return whole table row as a composite type.
# File lib/sequel/extensions/pg_row_ops.rb, line 123 def splat(cast_to=nil) if args.length > 1 raise Error, 'cannot splat a PGRowOp with multiple arguments' end if cast_to PGRowOp.new(ROW_CAST, args + [cast_to]) else PGRowOp.new(ROW, args) end end
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