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selector.py
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Created
Sat, Apr 27, 10:42
Size
3 KB
Mime Type
text/x-python
Expires
Mon, Apr 29, 10:42 (1 d, 23 h)
Engine
blob
Format
Raw Data
Handle
17248729
Attached To
R3127 blackdynamite
selector.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# -*- py-which-shell: "python"; -*-
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
################################################################
from
__future__
import
print_function
################################################################
import
copy
from
.
import
constraints
as
BDcons
################################################################
from
.
import
bdlogging
################################################################
print
=
bdlogging
.
invalidPrint
logger
=
bdlogging
.
getLogger
(
__name__
)
################################################################
class
Selector
(
object
):
def
__init__
(
self
,
base
):
self
.
base
=
base
def
buildList
(
self
,
curs
,
sqlobjs
):
logger
.
debug
(
sqlobjs
)
if
not
isinstance
(
sqlobjs
,
list
):
sqlobjs
=
[
sqlobjs
]
col_infos
=
[]
sqlobjs2
=
[]
for
sqlobj
in
sqlobjs
:
if
isinstance
(
sqlobj
,
type
):
sqlobj
=
sqlobj
(
self
.
base
)
sqlobjs2
.
append
(
sqlobj
)
col_infos
.
append
(
self
.
base
.
getColumnProperties
(
sqlobj
))
sqlobjs
=
sqlobjs2
list_objects
=
[]
for
entries
in
curs
:
# print(entries)
objs
=
[]
offset
=
0
logger
.
debug
(
sqlobjs
)
for
index
,
sqlobj
in
enumerate
(
sqlobjs
):
obj
=
copy
.
deepcopy
(
sqlobj
)
for
col_name
,
size
in
col_infos
[
index
]:
logger
.
debug
((
col_name
,
entries
[
offset
]))
obj
[
col_name
]
=
entries
[
offset
]
offset
+=
1
objs
.
append
(
obj
)
if
len
(
objs
)
==
1
:
list_objects
.
append
(
objs
[
0
])
else
:
list_objects
.
append
(
tuple
(
objs
))
return
list_objects
def
select
(
self
,
_types
,
constraints
=
None
,
sort_by
=
None
):
if
(
sort_by
is
not
None
)
and
(
not
isinstance
(
sort_by
,
str
)):
raise
RuntimeError
(
'sort_by argument is not correct: {0}'
.
format
(
sort_by
))
const
=
BDcons
.
BDconstraints
(
self
.
base
,
constraints
)
condition
,
params
=
const
.
getMatchingCondition
()
if
not
isinstance
(
_types
,
list
):
_types
=
[
_types
]
selected_tables
=
[
'{0}.{1}'
.
format
(
self
.
base
.
schema
,
t
.
table_name
)
for
t
in
_types
]
selected_tables
=
','
.
join
(
selected_tables
)
request
=
"SELECT * FROM {0}"
.
format
(
selected_tables
)
if
condition
:
request
+=
" WHERE "
+
condition
# print (sort_by)
if
sort_by
:
request
+=
" ORDER BY "
+
sort_by
logger
.
debug
(
request
)
logger
.
debug
(
params
)
curs
=
self
.
base
.
performRequest
(
request
,
params
)
obj_list
=
self
.
buildList
(
curs
,
_types
)
return
obj_list
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