blob: 0353d687ebcaaaaafa875a6705f7369f72a33015 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
module Arel
module Visitors
###
# This class produces SQL for JOIN clauses but omits the "single-source"
# part of the Join grammar:
#
# http://www.sqlite.org/syntaxdiagrams.html#join-source
#
# This visitor is used in SelectManager#join_sql and is for backwards
# compatibility with Arel V1.0
class JoinSql < Arel::Visitors::ToSql
def visit_Arel_Nodes_SelectCore o
o.froms.grep(Nodes::Join).map { |x| visit x }.join ', '
end
def visit_Arel_Nodes_OuterJoin o
"OUTER JOIN #{visit o.right} #{visit o.constraint}"
end
def visit_Arel_Nodes_InnerJoin o
"INNER JOIN #{visit o.right} #{visit o.constraint if o.constraint}"
end
end
end
end
|
