Module: Sequel::Dataset::ArgumentMapper

Included in:
UnnumberedArgumentMapper, Oracle::Dataset::ArgumentMapper, Postgres::Dataset::ArgumentMapper, SQLite::Dataset::ArgumentMapper, TinyTDS::Dataset::ArgumentMapper
Defined in:
lib/sequel/dataset/prepared_statements.rb

Overview

Default implementation of the argument mapper to allow native database support for bind variables and prepared statements (as opposed to the emulated ones used by default).

Instance Method Summary collapse

Instance Method Details

#bind_arguments ⇒ Object

The bind arguments to use for running this prepared statement

[View source]

51
52
53
 
# File 'lib/sequel/dataset/prepared_statements.rb', line 51

def bind_arguments
  @opts[:bind_arguments]
end

#call(bind_vars = OPTS, &block) ⇒ Object

Set the bind arguments based on the hash and call super.

[View source]

56
57
58
59
60
61
 
# File 'lib/sequel/dataset/prepared_statements.rb', line 56

def call(bind_vars=OPTS, &block)
  sql = prepared_sql
  prepared_args.freeze
  ps = bind(bind_vars)
  ps.clone(:bind_arguments=>ps.map_to_prepared_args(ps.opts[:bind_vars]), :sql=>sql, :prepared_sql=>sql).run(&block)
end

#prepared_sql ⇒ Object

Override the given *_sql method based on the type, and cache the result of the sql.

[View source]

65
66
67
68
69
70
 
# File 'lib/sequel/dataset/prepared_statements.rb', line 65

def prepared_sql
  if sql = @opts[:prepared_sql] || cache_get(:_prepared_sql)
    return sql
  end
  cache_set(:_prepared_sql, super)
end

#prepared_statement_name ⇒ Object

The name of the prepared statement, if any.

[View source]

46
47
48
 
# File 'lib/sequel/dataset/prepared_statements.rb', line 46

def prepared_statement_name
  @opts[:prepared_statement_name]
end