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体验新版 GitCode,发现更多精彩内容 >>
提交
6f9ea581
编写于
9月 20, 2013
作者:
A
Aaron Patterson
浏览文件
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电子邮件补丁
差异文件
cache associated target records hash
上级
99568a7a
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
11 addition
and
17 deletion
+11
-17
activerecord/lib/active_record/associations/preloader/association.rb
...d/lib/active_record/associations/preloader/association.rb
+11
-17
未找到文件。
activerecord/lib/active_record/associations/preloader/association.rb
浏览文件 @
6f9ea581
...
...
@@ -16,7 +16,7 @@ def initialize(klass, owners, reflection, preload_scope)
@scope
=
nil
@owners_by_key
=
nil
@type_caster
=
IDENTITY_CASTER
@
target_records
=
nil
@
associated_records_by_owner
=
nil
end
def
run
...
...
@@ -77,21 +77,9 @@ def target_records
private
def
lhs_records
return
@target_records
if
@target_records
owners_map
=
owners_by_key
owner_keys
=
owners_map
.
keys
.
compact
sliced
=
owner_keys
.
each_slice
(
klass
.
connection
.
in_clause_length
||
owner_keys
.
size
)
@target_records
=
sliced
.
flat_map
{
|
slice
|
records
=
records_for
(
slice
)
set_type_caster
records
,
association_key_name
records
}
end
def
associated_records_by_owner
return
@associated_records_by_owner
if
@associated_records_by_owner
owners_map
=
owners_by_key
owner_keys
=
owners_map
.
keys
.
compact
...
...
@@ -101,8 +89,14 @@ def associated_records_by_owner
if
klass
&&
owner_keys
.
any?
# Some databases impose a limit on the number of ids in a list (in Oracle it's 1000)
# Make several smaller queries if necessary or make one query if the adapter supports it
sliced
=
owner_keys
.
each_slice
(
klass
.
connection
.
in_clause_length
||
owner_keys
.
size
)
records
=
sliced
.
flat_map
{
|
slice
|
records
=
records_for
(
slice
)
set_type_caster
records
,
association_key_name
records
}
caster
=
type_caster
lhs_
records
.
each
do
|
record
|
records
.
each
do
|
record
|
owner_key
=
caster
.
call
record
[
association_key_name
]
owners_map
[
owner_key
].
each
do
|
owner
|
...
...
@@ -111,7 +105,7 @@ def associated_records_by_owner
end
end
records_by_owner
@associated_records_by_owner
=
records_by_owner
end
def
set_type_caster
(
results
,
name
)
...
...
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