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module Arel
class Deletion < Writing
def initialize(relation)
@relation = relation
end
def to_sql(formatter = nil)
[
"DELETE",
"FROM #{table_sql}",
("WHERE #{selects.collect(&:to_sql).join('\n\tAND ')}" unless selects.blank? ),
("LIMIT #{taken}" unless taken.blank? ),
].compact.join("\n")
end
def call(connection = engine.connection)
connection.delete(to_sql)
end
def ==(other)
Deletion === other and
relation == other.relation
end
end
end
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