Class: Sequel::SQL::OrderedExpression

Inherits:

SpecificExpression

• Object
• Expression
• SpecificExpression
• Sequel::SQL::OrderedExpression

Defined in:

lib/sequel_core/sql.rb

Overview

Represents a column/expression to order the result set by.

Instance Attribute Summary

• #descending ⇒ Object readonly

  Whether the expression should order the result set in a descening manner.

• #expression ⇒ Object readonly

  The expression to order the result set by.

Instance Method Summary

• #initialize(expression, descending = true) ⇒ OrderedExpression constructor

  default value.

• #to_s(ds) ⇒ Object

  Delegate the creation of the resulting SQL to the given dataset, since it may be database dependent.

Methods inherited from Expression

#lit

Constructor Details

#initialize(expression, descending = true) ⇒ OrderedExpression

default value.

# File 'lib/sequel_core/sql.rb', line 644

def initialize(expression, descending = true)
  @expression, @descending = expression, descending
end

Instance Attribute Details

#descending ⇒ Object (readonly)

Whether the expression should order the result set in a descening manner

# File 'lib/sequel_core/sql.rb', line 641

def descending
  @descending
end

#expression ⇒ Object (readonly)

The expression to order the result set by.

# File 'lib/sequel_core/sql.rb', line 638

def expression
  @expression
end

Instance Method Details

#to_s(ds) ⇒ Object

Delegate the creation of the resulting SQL to the given dataset, since it may be database dependent.

# File 'lib/sequel_core/sql.rb', line 650

def to_s(ds)
  ds.ordered_expression_sql(self)
end