Class: Sequel::Dataset::PlaceholderLiteralizer::Recorder

arg(v=(no_arg_given = true;

Return an Argument with the specified position, or the next position. In general you shouldn‘t mix calls with an argument and calls without an argument for the same receiver.

[Source]

     # File lib/sequel/dataset/placeholder_literalizer.rb, line 102
102:         def arg(v=(no_arg_given = true; @argn+=1))
103:           unless no_arg_given
104:             @argn = v if @argn < v
105:           end
106:           Argument.new(self, v)
107:         end

loader(dataset) {|self, dataset| ...}

Yields the receiver and the dataset to the block, which should call arg on the receiver for each placeholder argument, and return the dataset that you want to load.

[Source]

    # File lib/sequel/dataset/placeholder_literalizer.rb, line 80
80:         def loader(dataset)
81:           @argn = -1
82:           @args = []
83:           ds = yield self, dataset
84:           sql = ds.clone(:placeholder_literalizer=>self).sql
85: 
86:           last_offset = 0
87:           fragments = @args.map do |used_sql, offset, arg, t|
88:             raise Error, "placeholder literalizer argument literalized into different string than dataset returned" unless used_sql.equal?(sql)
89:             a = [sql[last_offset...offset], arg, t]
90:             last_offset = offset
91:             a
92:           end
93:           final_sql = sql[last_offset..-1]
94: 
95:           arity = @argn+1
96:           PlaceholderLiteralizer.new(ds.clone, fragments, final_sql, arity)
97:         end

use(sql, arg, transformer)

Record the offset at which the argument is used in the SQL query, and any transforming block.

[Source]

     # File lib/sequel/dataset/placeholder_literalizer.rb, line 111
111:         def use(sql, arg, transformer)
112:           @args << [sql, sql.length, arg, transformer]
113:         end

Methods

Public Instance methods