def farith(*args):
"""
.. function:: farith(calc) -> float or Fraction
Takes as input a mathematical expression in polish notation and computes the result using fractional computation
Examples:
>>> sql("select farith('+',5,7)" )
farith('+',5,7)
---------------
12
>>> sql("select farith('-','*','/',15,'-',7,'+',1,1,3,'+',2,'+',1,1)" )
farith('-','*','/',15,'-',7,'+',1,1,3,'+',2,'+',1,1)
----------------------------------------------------
5
"""
s = []
for i in reversed(args):
if i in ('*', '/', '-', '+'):
operand1 = s.pop()
operand2 = s.pop()
if i == '+':
operand = operand1 + operand2
elif i == '-':
operand = operand1 - operand2
elif i == '/':
operand = operand1 / operand2
elif i == '*':
operand = operand1 * operand2
s.append(operand)
else:
if type(i) in (int, float, long):
operand = Fraction(i)
s.append(operand)
else:
try:
s.append(Fraction(*json.loads(i)))
except ValueError as e:
raise functions.OperatorError(
'farith', "invalid expression found: '" + i + "'")
return simplify_fraction(s.pop())
def maincode(args, boolargs, nonstringargs, needsescape, notsplit, db, func,
retalways, connectionhandler):
autostring = 'automatic_vtable'
try:
largs, kargs = argsparse.parse(args, boolargs, nonstringargs,
needsescape, notsplit)
except Exception as e:
raise functions.MadisError(e)
if 'query' not in kargs:
raise functions.OperatorError(
func.__globals__['__name__'].rsplit('.')[-1],
"needs query argument ")
query = kargs['query']
del kargs['query']
if autostring in kargs:
del kargs[autostring]
return doall(query, db, func, retalways, connectionhandler, *largs,
**kargs)
def step(self, *args):
if self.notchecked:
if len(args) < 2:
raise functions.OperatorError("groupsum",
"Wrong number of arguments")
self.grouplen = args[0]
self.numofargs = len(args)
self.notchecked = False
groupkey = args[1:self.grouplen + 1]
try:
group = self.groupsdict[groupkey]
j = 0
for i in xrange(self.grouplen + 1, self.numofargs):
group[j].append(args[i])
j += 1
except KeyError:
self.groupsdict[groupkey] = [[x] for x in args[self.grouplen + 1:]]
def apachelogsplit(*args):
"""
.. function:: apachelogsplit(apache_log_line) -> [ip, ident, authuser, date, request, status, bytes, referrer, useragent]
Breaks a single apache log row into multiple fields.
Examples:
>>> table1('''
... '1.1.1.1 - - [01/Feb/2001:01:02:03 +0001] "HEAD /test.com HTTP/1.1" 200 - "-" "reftest"'
... ''')
>>> sql("select apachelogsplit(a) from table1")
ip | ident | authuser | date | method | uri | httpver | status | bytes | referrer | useragent
----------------------------------------------------------------------------------------------------------------------------
1.1.1.1 | None | None | 2001-02-01T01:02:03+0001 | HEAD | /test.com | 1.1 | 200 | None | None | reftest
"""
yield ('ip', 'ident', 'authuser', 'date', 'method', 'uri', 'httpver', 'status', 'bytes', 'referrer', 'useragent')
f = apache_log_split.match(''.join(args).strip())
if f == None:
raise functions.OperatorError("APACHELOGSPLIT", "Row function didn't receive any input")
f = f.groups()
f = [None if x == '-' else x for x in f]
# parse date
if f[3] != None:
if f[3][4:7] in months:
f[3] = f[3][1:-1]
date = f[3]
f[3] = date[7:11] + '-' + months[date[3:6]] + '-' + date[0:2] + 'T' + date[12:14] + ':' + date[
15:17] + ':' + date[
18:20] + date[
21:]
if f[7] != None:
f[7] = int(f[7])
if f[8] != None:
f[8] = int(f[8])
yield f
def reencode(*args):
if len(args) != 1:
raise functions.OperatorError("reencode", "operator takes only one arguments")
us = args[0]
if us == None:
return None
us = unicode(us)
try:
a = unicode(us.encode('iso-8859-1'), 'utf-8')
return a
except KeyboardInterrupt:
raise
except Exception:
try:
a = unicode(us.encode('windows-1252'), 'utf-8')
return a
except Exception:
return us
def var(*args):
"""
.. function:: var(varname[, value]) -> value
Sets (if both varname and value are given) or returns (if only varname is given) the contents of a variable.
Examples:
>>> sql("var 'v'") # doctest: +NORMALIZE_WHITESPACE
Traceback (most recent call last):
...
OperatorError: Madis SQLError:
Operator VAR: Variable 'v' does not exist
>>> sql("var 'v' 5")
var('v','5')
------------
5
>>> sql("var 'v'")
var('v')
--------
5
>>> sql("select var('v')")
var('v')
--------
5
"""
if len(args) == 0:
return str(functions.variables.__dict__)
var = args[0]
if len(args) == 1:
if hasattr(functions.variables, var):
return functions.variables.__dict__[var]
else:
raise functions.OperatorError(
'var', "Variable '" + var + "' does not exist")
elif len(args) == 2:
functions.variables.__dict__[var] = args[1]
return functions.variables.__dict__[var]
else:
return None
def VTiter(self, *parsedArgs, **envars):
def authorizer(operation, paramone, paramtwo, databasename,
triggerorview):
"""Called when each operation is prepared. We can return SQLITE_OK, SQLITE_DENY or
SQLITE_IGNORE"""
# find the operation name
plan.append([
apsw.mapping_authorizer_function[operation], paramone,
paramtwo, databasename, triggerorview
])
return apsw.SQLITE_OK
def buststatementcache():
c = connection.cursor()
for i in xrange(110):
a = list(c.execute("select " + str(i)))
_, dictargs = self.full_parse(parsedArgs)
yield [('operation', 'text'), ('paramone', 'text'),
('paramtwo', 'text'), ('databasename', 'text'),
('triggerorview', 'text')]
if 'query' not in dictargs:
raise functions.OperatorError(
__name__.rsplit('.')[-1], " needs query argument ")
query = dictargs['query']
connection = envars['db']
plan = []
buststatementcache()
cursor = connection.cursor()
cursor.setexectrace(lambda x, y, z: apsw.SQLITE_DENY)
connection.setauthorizer(authorizer)
cursor.execute(query)
connection.setauthorizer(None)
for r in plan:
yield r
def step(self, *args):
if not args:
raise functions.OperatorError("frecencyindex","No arguments")
now = datetime.datetime.now()
now = iso8601.parse_date(now.strftime("%Y-%m-%d %H:%M:%S"))
d = args[0].replace('T',' ')
dt = iso8601.parse_date(args[0].replace('Z',''))
diff=now-dt
if (diff.days)<30:
self.monthCounter+=1
elif (diff.days)<3*30:
self.trimesterCounter+=1
elif (diff.days)<6*30:
self.semesterCounter+=1
elif (diff.days)<12*30:
self.yearCounter+=1
elif (diff.days)<24*30:
self.twoyearsCounter+=1
def step(self, *args):
if not args:
raise functions.OperatorError("frecency", "No arguments")
# last 2 arguments are static , so they are parse only the first time
if not self.initstatic:
self.initstatic = True
self.points = 100.0
self.now = datetime.datetime.now()
if len(args) >= 2:
for arg in args[1:]:
isnowarg = re_now.match(arg)
if isnowarg:
nowdate = isnowarg.groupdict()['now']
self.now = iso8601.parse_date(nowdate)
else:
self.points = int(arg)
input = args[0]
dt = iso8601.parse_date(input)
self.frecency += self.__decrease(self.now - dt) * self.points
def jdict(*args):
"""
.. function:: jdict(key, value, key1, value1) -> jdict
Returns a jdict of the keys and value pairs.
Examples:
>>> sql(''' select jdict('key1', 'val1', 'key2', 'val2') ''') # doctest: +NORMALIZE_WHITESPACE
jdict('key1', 'val1', 'key2', 'val2')
-------------------------------------
{"key1":"val1","key2":"val2"}
>>> sql(''' select jdict('key', '{"k1":1,"k2":2}') ''') # doctest: +NORMALIZE_WHITESPACE
jdict('key', '{"k1":1,"k2":2}')
-------------------------------
{"key":{"k1":1,"k2":2}}
>>> sql(''' select jdict('key', '["val1", "val2"]') ''') # doctest: +NORMALIZE_WHITESPACE
jdict('key', '["val1", "val2"]')
--------------------------------
{"key":["val1","val2"]}
>>> sql(''' select jdict('1') ''') # doctest: +NORMALIZE_WHITESPACE
Traceback (most recent call last):
...
OperatorError: Madis SQLError:
Operator JDICT: At least two arguments required
"""
if len(args) == 1:
raise functions.OperatorError('jdict',
"At least two arguments required")
result = OrderedDict()
for i in xrange(0, len(args), 2):
result[args[i]] = jopts.fromjsingle(args[i + 1])
return jopts.toj(result)
def VTiter(self, *parsedArgs, **envars):
largs, dictargs = self.full_parse(parsedArgs)
if 'query' not in dictargs:
raise functions.OperatorError(__name__.rsplit('.')[-1], "No query argument")
query = dictargs['query']
cur = envars['db'].cursor()
c = cur.execute(query, parse=False)
schema = [('_rowid_',)]
schemaorder = {}
record = []
r1=[]
firstrow = c.next()
schema.append((firstrow[1],))
record.append(firstrow[0])
record.append(firstrow[2])
for row in c:
if row[0] == firstrow[0]:
schema.append((row[1],))
record.append(row[2])
else:
firstrow=row
r1.append(row[0])
r1.append(row[2])
break
yield schema
yield record
record=r1
for row in c:
if row[0] == firstrow[0]:
record.append(row[2])
else:
firstrow=row
r1=[]
r1.append(row[0])
r1.append(row[2])
yield record
record=r1
yield record
def step(self, *args):
if self.init:
self.init = False
if not args:
raise functions.OperatorError("fsum", "No arguments")
try:
if type(args[0]) in (int, float, long):
x = Fraction(args[0])
else:
try:
json_object = json.loads(args[0])
x = Fraction(json_object[0], json_object[1])
except ValueError, e:
return
except KeyboardInterrupt:
raise
except:
return
self.x += x
def VTiter(self, *parsedArgs, **envars):
largs, dictargs = self.full_parse(parsedArgs)
if 'query' not in dictargs:
raise functions.OperatorError(
__name__.rsplit('.')[-1], "No query argument ")
query = dictargs['query']
cur = envars['db'].cursor()
c = cur.execute(query)
schema = cur.getdescriptionsafe()
init = True
for myrow in c: # assume that it is ordered by nodeno
# print myrow
level = int(myrow[0]) #currentlevel
nodestoinsert = ast.literal_eval(
myrow[1]) #nodes of the level at hand. It is a dice
for i in nodestoinsert:
if str(i['leafval']) == "": i.pop('leafval')
if str(i['childnodes']) == "": i.pop('childnodes')
if init is True:
for k in nodestoinsert:
k.pop('id')
resulttable = nodestoinsert
init = False
else:
# print "AA", resulttable
recursive_checkchilds(resulttable, nodestoinsert, level)
# print "RESULT",resulttable
yield [
('result', ),
]
# print str(resulttable)
yield [
str(resulttable).replace("'", "\""),
]
def contains(*args):
"""
.. function:: contains(str1,str2) -> bool
Returns true if string *str1* contains *str2*.
Examples:
>>> sql("select contains('test string', 'str') as test ")
test
----
1
>>> sql("select contains('test string', 'nostr') as test ")
test
----
0
"""
if len(args) != 2:
raise functions.OperatorError("included", "operator takes exactly two arguments")
if (args[1] in args[0]):
return True
return False
def pyfunerrtonul(*args):
"""
.. function:: pyfunerrtonul(pyfunction, parameters)
Calls a python function and returns the result. If an error occurs it returns
*null*.
>>> sql("select pyfunerrtonul('math.sqrt', -1)")
pyfunerrtonul('math.sqrt', -1)
------------------------------
None
>>> sql("select pyfunerrtonul('math.log10', -1)")
pyfunerrtonul('math.log10', -1)
-------------------------------
None
"""
if len(args) == 0:
return
fsplit = args[0].split('.')
try:
f = __import__(fsplit[0])
for i in fsplit[1:]:
f = f.__dict__[i]
except:
try:
f = __import__('libexternal' + '.' + fsplit[0])
for i in fsplit:
f = f.__dict__[i]
except:
raise functions.OperatorError("pyfunerrtonul",
"didn't find function: " + args[0])
try:
res = f(*args[1:])
except Exception, e:
return None
def VTiter(self, *parsedArgs, **envars):
largs, dictargs = self.full_parse(parsedArgs)
if 'query' not in dictargs:
raise functions.OperatorError(__name__.rsplit('.')[-1], "No query argument ")
query = dictargs['query']
c = envars['db'].cursor()
q = c.execute(query, parse=False)
try:
yield list(c.getdescriptionsafe())
except StopIteration:
try:
raise
finally:
try:
c.close()
except:
pass
for _ in q:
pass
def regexprfindall(*args):
"""
.. function:: regexprfindall(pattern,text)
This function returns *all* matches of *pattern* in text.
Examples:
>>> sql("select regexprfindall('\w+', 'one')")
regexprfindall('\w+', 'one')
----------------------------
["one"]
>>> sql("select regexprfindall('\w+', 'one two three')")
regexprfindall('\w+', 'one two three')
--------------------------------------
["one","two","three"]
"""
if len(args) != 2:
raise functions.OperatorError('regexprfindall', 'Two parameters should be provided')
return jopts.tojstrict(re.findall(args[0], unicode(args[1]), re.UNICODE))
def sunitouni(*args):
"""
.. function:: sunitouni(str)
Returns *str* replacing literal str code points to their string representation.
Examples:
>>> sql("select sunitouni('br\\u00fbl\\u00e9') as test ")
test
-------
brûlé
>>> sql("select sunitouni('\\u that is not a str code point') as test ")
test
-----------------------------------
\u that is not a str code point
>>> sql("select sunitouni(null)")
sunitouni(null)
---------------
None
>>> sql("select sunitouni(9)")
sunitouni(9)
------------
9
"""
if len(args) != 1:
raise functions.OperatorError("sunitouni",
"operator takes only one arguments")
if args[0] == None:
return None
kk = "u'%s'" % (str(args[0]).replace("'", "\\'"))
try:
return eval(kk)
except KeyboardInterrupt:
raise
except Exception:
return args[0]
def normuni(*args):
"""
.. function:: normuni(str)
Returns *str* normalised in the composed str normal form without replacing
same look characters. For example this 'À' character can be encoded with one or two
different characters, :func:`normuni` returns an one-character encoded version. This
function is important to check true strings equality.
Functions :func:`sunitouni` and :func:`unitosuni` are used in the examples to make it more comprehensive.
Examples:
.. note::
Returned results in the next two examples should look the same,
if not that is a bug at the combined characters rendering of the shell
that the documentation was created.
>>> sql("select sunitouni('C\u0327') as test ")
test
----
Ç
>>> sql("select normuni(sunitouni('C\u0327')) as test ")
test
----
Ç
>>> sql("select unitosuni(normuni(sunitouni('C\u0327'))) as test ")
test
------
\u00c7
"""
if len(args) != 1:
raise functions.OperatorError("normuni",
"operator takes only one arguments")
if args[0] == None:
return None
return strdata.normalize('NFC', args[0])
def VTiter(self, *parsedArgs, **envars):
largs, dictargs = self.full_parse(parsedArgs)
self.nonames = True
self.names = []
self.types = []
if 'query' not in dictargs:
raise functions.OperatorError(
__name__.rsplit('.')[-1], "No query argument ")
query = dictargs['query']
cur = envars['db'].cursor()
c = cur.execute(query)
yield [('c1', )]
output = StringIO.StringIO()
writer = csv.writer(output)
for r in c:
writer.writerow(r)
ll = output.getvalue().splitlines()
for row in ll:
yield (row, )
def requirevars(*args):
"""
.. function:: requirevars(varname1, [varname2,...])
Checks if all variables (varname1,...) exist. If not it throws an exception.
Examples:
>>> sql("var 'cv1' 5")
var('cv1','5')
--------------
5
>>> sql("var 'cv2' 10")
var('cv2','10')
---------------
10
>>> sql("requirevars 'cv1' 'cv2'")
requirevars('cv1','cv2')
------------------------
1
>>> sql("requirevars cv1 cv2")
requirevars('cv1 cv2')
----------------------
1
>>> sql("requirevars 'cv1' 'testvar'") # doctest: +NORMALIZE_WHITESPACE
Traceback (most recent call last):
...
OperatorError: Madis SQLError:
Operator REQUIREVARS: Variable testvar isn't initialized
"""
for v in (' '.join(args).strip()).split():
if not hasattr(functions.variables, v):
raise functions.OperatorError("requirevars",
"Variable %s isn't initialized" % v)
return 1
def regexprmatches(*args):
"""
.. function:: regexprmatches(pattern, arg)
This function returns true if the pattern matches arg or false otherwise.
Examples use `inversion`.
Examples:
>>> sql("regexprmatches '(a)' 'qwer a qwer' ")
regexprmatches('(a)','qwer a qwer')
-----------------------------------
1
"""
if len(args) != 2:
raise functions.OperatorError('regexprmatches', 'Two parameters should be provided')
a = re.search(args[0], unicode(args[1]), re.UNICODE)
if a != None:
return True
else:
return False
def flowname(*args):
"""
.. function:: flowname([str])
Sets and retrieves, 'flowname' variable
Examples:
>>> sql("flowname test flow ")
flowname('test flow')
---------------------
test flow
>>> sql("flowname")
flowname()
----------
test flow
>>> sql("flowname 'arg1' arg2") # doctest: +NORMALIZE_WHITESPACE
Traceback (most recent call last):
...
OperatorError: Madis SQLError:
Operator FLOWNAME: Flowname accepts only 1 argument
"""
var = 'flowname'
if len(args) > 1:
raise functions.OperatorError('flowname',
'Flowname accepts only 1 argument')
if len(args) == 0 and hasattr(functions.variables, var):
return str(functions.variables.__dict__[var])
elif len(args) == 1:
functions.variables.__dict__[var] = ' '.join(
[str(x) for x in args[0:]])
return str(functions.variables.__dict__[var])
else:
return None
def jintersection(*args):
"""
.. function:: jintersection(jpackA, jpackB) -> jpack
Returns the items of jpackA except the items that appear on jpackB.
Examples:
>>> sql("select jintersection('[1,2,3]', '[1,2,3]')") # doctest: +NORMALIZE_WHITESPACE
jintersection('[1,2,3]', '[1,2,3]')
-----------------------------------
[1,2,3]
>>> sql("select jintersection('[1,2,3]', '[1,3]', 1)") # doctest: +NORMALIZE_WHITESPACE
jintersection('[1,2,3]', '[1,3]', 1)
------------------------------------
1
"""
if len(args) < 2:
raise functions.OperatorError("jintersection","operator needs at least two inputs")
return jopts.toj(sorted(set.intersection(*[set(jopts.fromj(x)) for x in args])))
def VTiter(self, *parsedArgs, **envars):
largs, dictargs = self.full_parse(parsedArgs)
if 'query' not in dictargs:
raise functions.OperatorError(
__name__.rsplit('.')[-1], "No query argument ")
query = dictargs['query']
connection = envars['db']
yield (('column', 'text'), ('type', 'text'))
cur = connection.cursor()
execit = cur.execute(query, parse=False)
try:
samplerow = execit.next()
except StopIteration:
pass
vals = cur.getdescriptionsafe()
cur.close()
for i in vals:
yield i
def VTiter(self, *parsedArgs, **envars):
largs, dictargs = self.full_parse(parsedArgs)
self.nonames = True
self.names = []
self.types = []
if 'query' not in dictargs:
raise functions.OperatorError(__name__.rsplit('.')[-1], "No query argument ")
query = dictargs['query']
cur = envars['db'].cursor()
c = cur.execute(query)
schema = cur.getdescriptionsafe()
schema1 = []
first_row = c.next()
first_tuple = []
j = 0
for i in first_row:
if is_number(i):
schema1.append(schema[j])
first_tuple.append(i)
j += 1
yield tuple(schema1)
yield tuple(first_tuple)
for row in c:
tmp_row = []
j = 0
for col in row:
if schema[j] in schema1:
tmp_row.append(col)
j += 1
yield tmp_row
def VTiter(self, *parsedArgs, **envars):
largs, dictargs = self.full_parse(parsedArgs)
if 'key' not in dictargs:
raise functions.OperatorError(
__name__.rsplit('.')[-1], "No URL argument ")
else:
key = dictargs['key']
if 'rate' in dictargs:
rate = dictargs['rate']
else:
rate = 0
schema = [('id', 'text'), ('tweet', 'text'), ('name', 'text'),
('location', 'text'), ('favourites', 'text'),
('screen_name', 'text'), ('friends', 'text'),
('followers', 'text'), ('sentiment', 'text')]
yield schema
db = 'db5.db'
tname = key
rows = checkTableMetadata(key, rate, tname, db)
if rows is not None:
#print "GETTING TABLE FROM CACHE"
for r in rows:
yield r
return
api = twitter.Api(
consumer_key='5vQVQ4B8bUcNGG3WOKr80gPdQ',
consumer_secret=
'jkQw1PPQrKcKddBjg6AqYNH3n7cAogXhNTwf4m13urR37zKUdG',
access_token_key=
'747542150561341440-RyK8r6AA0iCr3w5cbuNKmcxCDRfdJ42',
access_token_secret='v5PfDnaLCIRu8KyLmfzXDOrykUtK96mmIwkTQNoUHG7mW'
)
results = api.GetSearch(raw_query="l=&q=" + key +
"%20-filter%3Aretweets&count=100")
tuples = []
sentiment = ''
host = socket.gethostname()
port = 12345
for r in results:
tweet = unicode(r.text) #s.connect((host, port))
#s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
#s.connect((host, port))
#s.sendall(r.text.encode('UTF-8'))
#sentiment = s.recv(1024)
t = (r.id, tweet, r.user.name, r.user.location,
r.user.favourites_count, r.user.screen_name,
r.user.friends_count, r.user.followers_count, sentiment)
yield t
tuples.append(t)
s.close()
createTable(db, tname, schema, tuples) #materialize the table
#getMaterializedContent(db,tname)
gc.enable()
def VTiter(self, *parsedArgs, **envars):
largs, dictargs = self.full_parse(parsedArgs)
if len(largs) < 1:
raise functions.OperatorError(
__name__.rsplit('.')[-1], "Not defined union tables ")
streams = str(largs[0]).split(",")
if len(streams) < 2:
raise functions.OperatorError(
__name__.rsplit('.')[-1],
"Union tables must be more than one ")
cursors = []
execs = []
for stream in streams:
cursors.append(envars['db'].cursor())
execs.append(cursors[-1].execute("select * from " + str(stream) +
";"))
comparedcursor = str(cursors[0].getdescriptionsafe())
# for cursor in cursors:
# if str(cursor.getdescriptionsafe()) != comparedcursor:
# raise functions.OperatorError(__name__.rsplit('.')[-1],"Union tables with different schemas ")
if 'cols' in dictargs:
try:
cols = int(dictargs['cols'])
except ValueError:
try:
cols = [y[0] for y in cursors[0].getdescriptionsafe()
].index(dictargs['cols'])
except ValueError:
raise functions.OperatorError(
__name__.rsplit('.')[-1],
"Column name does not exists ")
else:
cols = 0
if cols >= len(cursors[0].getdescriptionsafe()):
raise functions.OperatorError(
__name__.rsplit('.')[-1], "Column position does not exists ")
for x in range(0, len(streams)):
if x is 0:
execs[0] = ((v[cols], (0, ) + v) for v in execs[0])
elif x is 1:
execs[1] = ((v[cols], (1, ) + v) for v in execs[1])
elif x is 2:
execs[2] = ((v[cols], (2, ) + v) for v in execs[2])
elif x is 3:
execs[3] = ((v[cols], (3, ) + v) for v in execs[3])
elif x is 4:
execs[4] = ((v[cols], (4, ) + v) for v in execs[4])
try:
yield list(cursors[0].getdescriptionsafe())
except StopIteration:
try:
raise
finally:
try:
for cur in cursors:
cur.close()
except:
pass
currentgroup = None
lists = [[]] * len(streams)
for k, v in heapq.merge(*execs):
if currentgroup is None or currentgroup != k:
unionset = set().union(*lists[1:])
for t in (set(lists[0]) - unionset):
yield t
lists = [[]] * len(streams)
lists[v[0]] = lists[v[0]] + [tuple(v[1:])]
currentgroup = k
unionset = set().union(*lists[1:])
for t in list(set(lists[0]) - unionset):
yield t
def VTiter(self, *parsedArgs, **envars):
import sklearn
largs, dictargs = self.full_parse(parsedArgs)
if 'query' not in dictargs:
raise functions.OperatorError(
__name__.rsplit('.')[-1], "No query argument ")
query = dictargs['query']
print 'MADIS/QUERY', query
cur = envars['db'].cursor()
c = cur.execute(query, parse=False)
schema = []
try:
schema = [x[0] for x in cur.getdescriptionsafe()]
except StopIteration:
try:
raise
finally:
try:
c.close()
except:
pass
if 'filename' not in dictargs:
raise functions.OperatorError(
__name__.rsplit('.')[-1], "No filename provided")
f = open(dictargs['filename'], 'w')
if 'initstr' not in dictargs:
raise functions.OperatorError(
__name__.rsplit('.')[-1], "No initialization string")
initstr = dictargs['initstr']
#-- IMPORT MODULES ---
import itertools
######################################################3
#from sklearn.cluster import *
#from sklearn.linear_model import *
#from sklearn.neighbors import *
#from sklearn.svm import *
#from sklearn.naive_bayes import *
#from sklearn.tree import *
#from sklearn.ensemble import *
#from sklearn.model_selection import *
########################################################
### to specify imports
# from sklearn.cross_validation import *
print 'MADIS/sklearn version', sklearn.__version__
# from sklearn.cluster import AgglomerativeClustering
import cPickle as cp
import numpy as np
# import unicodedata
import zlib
# --------------------
model = eval(initstr)
print 'MADIS/MODEL:', model
if 'classname' not in dictargs:
# raise functions.OperatorError(__name__.rsplit('.')[-1],"No classname argument ")
trainList = []
for row in c:
trainList = [row for row in c]
train = np.array(trainList).astype(np.float)
model.fit(train)
pstr = cp.dumps(model, 2)
f.write(zlib.compress(pstr, 3))
yield [('id', ), ('cluster_label', )]
for i in xrange(0, len(train)):
yield (i, int(model.labels_[i]))
else:
classname = dictargs['classname']
idclassname = schema.index(classname)
trainList = []
targetList = []
cv_func = ''
cv = 0
if 'cv' not in dictargs:
cv = 5
else:
cv = int(dictargs['cv'])
#Constructing group of samples:
if 'groupname' in dictargs:
groupname = ''
groups = []
groupname = dictargs['groupname']
idgroupname = schema.index(groupname)
groupList = []
# print 'trainlist:', trainList
for i, row in enumerate(c):
trainList.append(
list(row[0:idclassname] + row[idclassname + 1:len(row)]))
targetList.append(int(row[idclassname]))
if 'groupname' in dictargs:
groupList.append(row[idgroupname])
groups = np.array(groupList)
del trainList[i][idgroupname]
else:
groups = None
X = np.array(trainList).astype(np.float)
y = np.array(targetList).astype(np.int)
preds = []
pred_probs = []
# print 'MADIS/GROUPS?: ',groups
preds = cross_val_predict(model, X, y, cv=cv, groups=groups)
# pred_probs = cross_val_predict(model, X, y, cv=cv_func,method='predict_proba')
# if model.probability:
if hasattr(model, 'probability') and model.probability:
pred_probs = cross_val_predict(model,
X,
y,
cv=cv,
groups=groups,
method='predict_proba')
# print 'MADIS/preds',preds
# print 'MADIS/probs',pred_probs
#Fit again and Store model in disk:
model.fit(X, y)
# pred_probs = model.predict_proba(X)
pstr = cp.dumps(model, 2)
f.write(zlib.compress(pstr, 3))
# print 'MADIS/CLASSNAMES',model.classes_
# yield tuple(['id','predicted_label'] + ['center'+str(i) for i in xrange(1,len(self.sample[0])+1)])
# yield [('id',), ('predicted_label',), ('prediction_probability',),([tuple('probability_'+str(i)+',') for i in range(len(model.classes_))])]
if hasattr(model, 'probability') and model.probability:
# if model.probability:
yield [('id', ), ('predicted_label', ),
('prediction_probability', ), ('probs_per_class', )]
for i in range(len(X)):
pred = preds[i]
yield (i, int(pred), pred_probs[i][pred],
str([
pred_probs[i][j]
for j in range(len(model.classes_))
]))
# yield (i, int(pred), pred_probs[i][pred], [pred_probs[i][j] for j in range(len(model.classes_))])
else:
yield [
('id', ),
('predicted_label', ),
]
for i in range(len(X)):
pred = preds[i]
yield (i, int(pred))
def VTiter(self, *args,**formatArgs):
largs, dictargs = self.full_parse(args)
where = None
mode = 'row'
if 'file' in dictargs:
where=dictargs['file']
else:
raise functions.OperatorError(__name__.rsplit('.')[-1],"No destination provided")
if 'mode' in dictargs:
mode = dictargs['mode']
col = 0
if 'cols' in dictargs:
a = re.split(' |,| , |, | ,' , dictargs['cols'])
column = [x for x in a if x != '']
else:
col = 1
filename, ext=os.path.splitext(os.path.basename(where))
fullpath=os.path.split(where)[0]
fileIter=open(where, "rb")
selectcols = (10,11)
filtercols = [10]
value = "1993-01-26"
indices = []
if mode == 'spac':
import msgpack
blocksize = struct.unpack('!i',fileIter.read(4))
b = struct.unpack('!B',fileIter.read(1))
schema = cPickle.load(fileIter)
colnum = len(schema)
found = 0
index_found = 0
blocknum = 0
myvals = [[None] for _ in xrange(colnum)]
myfiltervals = [[None] for _ in xrange(colnum)]
selectschema = [str(x) for x in selectcols]
yield selectschema
input = cStringIO.StringIO()
while True:
input.truncate(0)
blocknum += 1
d = 0
ind = [0 for _ in xrange(colnum*4+1)]
try:
blocksize = struct.unpack('!i',fileIter.read(4))
except:
break
input.write(fileIter.read(blocksize[0]))
input.seek(0)
block_kind = struct.unpack('!B',input.read(1))
compression_bit = struct.unpack('!B',input.read(1))
type = '!'+'i'*(colnum*4+1)
ind = list(struct.unpack(type, input.read(4*(colnum*4+1))))
d2 = [[] for _ in xrange(len(selectcols))]
d3 = [[] for _ in xrange(len(filtercols))]
def binarySearch(alist, item):
first = 0
last = len(alist)-1
found = False
midpoint = (first + last)//2
while first<=last and not found:
midpoint = (first + last)//2
if alist[midpoint] == item:
found = True
else:
if item < alist[midpoint]:
last = midpoint-1
else:
first = midpoint+1
return midpoint, found
### filter evaluation
for index,col in enumerate(filtercols):
indices = []
input.seek(ind[col*4+3])
if ind[col*4+2] == 0: #full data block
column = msgpack.loads(zlib.decompress(input.read(ind[col*4])))
myfiltervals[col] = column
if len(myfiltervals[col])<256:
listptr = array('B')
elif len(myfiltervals[col])<65536:
listptr = array('H')
else:
listptr = array('i')
listptr.fromstring(zlib.decompress(input.read(ind[col*4+1])))
if (value >= myfiltervals[col][0] and value<=myfiltervals[col][len(myfiltervals[col])-1]):
t = binarySearch(myfiltervals[col],value)
if t[1]:
found = 1
index_found = t[0]
for j,i in enumerate(listptr):
if i == index_found:
indices.append(j)
else:
found = 0
else:
found = 0
else: # differential block
column = msgpack.loads(zlib.decompress(input.read(ind[col*4])))
if found:
myfiltervals[col] = myfiltervals[col] + [None] * len(column)
if len(myfiltervals[col])<256:
listptr = array('B')
elif len(myfiltervals[col])<65536:
listptr = array('H')
else:
listptr = array('i')
listptr.fromstring(zlib.decompress(input.read(ind[col*4+1])))
for j,i in enumerate(listptr):
if i == index_found:
indices.append(j)
else:
if (value >= column[0] and value<=column[len(column)-1]):
t = binarySearch(column,value)
if t[1]:
found = 1
index_found = t[0] + len(myfiltervals[col])
if len(myfiltervals[col])+len(column)<256:
listptr = array('B')
elif len(myfiltervals[col])+len(column)<65536:
listptr = array('H')
else:
listptr = array('i')
listptr.fromstring(zlib.decompress(input.read(ind[col*4+1])))
for j,i in enumerate(listptr):
if i == index_found:
indices.append(j)
myfiltervals[col] = myfiltervals[col] + [None] * len(column)
#### end of filter evaluation
for index,col in enumerate(selectcols):
input.seek(ind[col*4+3])
column = msgpack.loads(zlib.decompress(input.read(ind[col*4])))
if ind[col*4+2] == 0:
myvals[col] = column
else:
myvals[col] = myvals[col] + column
if len(myvals[col])<256:
listptr = array('B')
elif len(myvals[col])<65536:
listptr = array('H')
else:
listptr = array('i')
if (ind[col*4+1]==0 and ind[col*4+2] == 0):
for i in xrange(ind[len(ind)-1]):
d2[index].append(myvals[col][0])
else:
listptr.fromstring(zlib.decompress(input.read(ind[col*4+1])))
if len(filtercols)>0:
for i in indices:
d2[index].append(myvals[col][listptr[i]])
else:
for i in listptr:
d2[index].append(myvals[col][i])
for row in izip(*d2):
yield row
if mode == 'sorteddictpercol':
# if col:
# print "lala"
# gc.disable()
# schema = marshal.load(fileIter)
# colnum = len(schema)
# cols = [[] for _ in xrange(colnum)]
# yield schema
# listptr = [array('H') for _ in xrange(colnum) ]
# while True:
# try:
# row=0
# d = 0
# ind = struct.unpack('L'*(colnum+2), fileIter.read(8*(colnum+2)))
# for i in xrange(colnum):
# cols[i] = marshal.load(fileIter)
# listptr[i].fromfile(fileIter,ind[colnum+1])
# for row in xrange (ind[colnum+1]):
# tup = [0 for _ in xrange(colnum)]
# for col in xrange(colnum):
# tup[col] = cols[col][listptr[col][row]]
# yield tup
# tup = []
#
# listptr = [array('H') for _ in xrange(colnum) ]
# except:
# break
# gc.enable()
# elif len(column) == 1:
# schema = marshal.load(fileIter)
# colid = [x[0] for x in schema].index(column[0])
# colnum = len(schema)
# yield [schema[colid]]
#
# while True:
# try:
# ind = struct.unpack('L'*(colnum+2), fileIter.read(8*(colnum+2)))
# listptr = array('H')
# next=ind[colnum]
# fileIter.seek(ind[colid])
# col = marshal.load(fileIter)
# listptr.fromfile(fileIter,ind[colnum+1])
# for c in listptr:
# yield(col[c],)
# fileIter.seek(next)
# except:
# break
#
#
# else:
import msgpack
schema = msgpack.load(fileIter)
colnum = len(schema)
yield schema
output = cStringIO.StringIO()
blocknum = 0
paxcols = {}
while True:
try:
output.truncate(0)
blocksize = struct.unpack('i', fileIter.read(4))
# output.write(fileIter.read(blocksize[0]))
# output.seek(0)
ind = list(struct.unpack('L'*(colnum*2+1), fileIter.read(8*(colnum*2+1))))
d2 = [[] for _ in xrange(colnum)]
for c in xrange(colnum):
s = cPickle.loads(zlib.decompress(fileIter.read(ind[c*2])))
if (blocknum == 1 and c in paxcols) or (blocknum == 0 and len(s)>50*1.0*ind[colnum*2]/100):
d2[c] = s
if blocknum == 0:
paxcols[c]=1
else:
if len(s)==1:
d2[c] = [s[0] for _ in xrange(ind[colnum*2])]
elif len(s)<256:
listptr = array('B')
listptr.fromstring(zlib.decompress(fileIter.read(ind[c*2+1])))
for lala in listptr:
d2[c].append(s[lala])
else:
listptr = array('H')
listptr.fromstring(zlib.decompress(fileIter.read(ind[c*2+1])))
for lala in listptr:
d2[c].append(s[lala])
for row in izip(*d2):
yield row
blocknum = 1
except:
break
if mode == 'dictperval':
if col:
gc.disable()
schema = cPickle.load(fileIter)
colnum = len(schema)
cols = [[] for _ in xrange(colnum)]
yield schema
listptr = [array('H') for _ in xrange(colnum) ]
while True:
try:
row=0
d = 0
ind = struct.unpack('L'*(colnum+3), fileIter.read(8*(colnum+3)))
for i in xrange(colnum):
cols[i] = cPickle.load(fileIter)
for i in xrange(colnum):
listptr[i].fromfile(fileIter,ind[colnum+2])
for row in xrange (ind[colnum+2]):
tup = [0 for _ in xrange(colnum)]
for col in xrange(colnum):
tup[col] = cols[col][listptr[col][row]]
yield tup
tup = []
listptr = [array('H') for _ in xrange(colnum) ]
except:
break
gc.enable()
elif len(column) == 1:
schema = cPickle.load(fileIter)
colid = [x[0] for x in schema].index(column[0])
colnum = len(schema)
yield [schema[colid]]
while True:
try:
ind = struct.unpack('L'*(colnum+3), fileIter.read(8*(colnum+3)))
next=ind[colnum+1]
fileIter.seek(ind[colid])
col = cPickle.load(fileIter)
fileIter.seek(ind[colnum])
listptr = [array('H') for _ in xrange(colnum) ]
for i in xrange(colnum):
listptr[i].fromfile(fileIter,ind[colnum+2])
for c in listptr[colid]:
yield(col[c],)
fileIter.seek(next)
except:
break
else:
schema = marshal.load(fileIter)
lcols = []
for c in column:
lcols.append([x[0] for x in schema].index(c))
colnum = len(schema)
yield [schema[lcols[i]] for i in xrange(len(lcols))]
while True:
row = 0
try:
d=0
ind = list(struct.unpack("<%dL" % ((colnum+1) * 2), fileIter.read(8*(colnum+1))))
next=ind[len(ind)-2]
d2 = [[] for _ in xrange(len(lcols))]
j = 0
for c in lcols:
fileIter.seek(ind[c*2])
d2[j] = marshal.load(fileIter)
j+=1
while True:
tup = []
for col in xrange(len(lcols)):
try:
tup.append(d2[col][row])
except :
d = 1
break
if d == 1:
break
yield tup
tup = []
row+=1
fileIter.seek(next)
except:
break
if mode == 'rcstreampax':
if col:
schema = marshal.load(fileIter)
colnum = len(schema)
ENDFILE = 0
yield schema
while True:
row=0
d = 0
ind = [0 for _ in xrange(colnum+2)]
if ENDFILE==1:
try:
marshal.load(fileIter)
ENDFILE=0
except EOFError:
break
for i in xrange(colnum+2):
ind[i] = struct.unpack('L',fileIter.read(8))
if ind[colnum+1][0] == 1:
ENDFILE = 1
d2 = [[] for _ in xrange(colnum)]
for col in xrange(colnum):
obj = fileIter.read(ind[col+1][0]-ind[col][0])
d2[col] = marshal.loads(zlib.decompress(obj))
while True:
tup = []
for col in xrange(colnum):
try:
tup.append(d2[col][row])
except :
d = 1
break
if d == 1:
break
yield tup
tup = []
row+=1
elif len(column) == 1:
schema = cPickle.load(fileIter)
colid = [x[0] for x in schema].index(column[0])
colnum = len(schema)
yield [schema[colid]]
while True:
try:
ind = list(struct.unpack("<%dL" % ((colnum+1) * 2), fileIter.read(8*(colnum+1))))
next=ind[len(ind)-2]
fileIter.seek(ind[colid*2])
d2 = cPickle.loads(zlib.decompress(fileIter.read(ind[colid*2+1]-ind[colid*2])))
#d2 = cPickle.load(fileIter)
for c in d2:
yield(c,)
fileIter.seek(next)
except:
break
else:
schema = marshal.load(fileIter)
lcols = []
for c in column:
lcols.append([x[0] for x in schema].index(c))
colnum = len(schema)
yield [schema[lcols[i]] for i in xrange(len(lcols))]
while True:
row = 0
try:
d=0
ind = list(struct.unpack("<%dL" % ((colnum+1) * 2), fileIter.read(8*(colnum+1))))
next=ind[len(ind)-2]
d2 = [[] for _ in xrange(len(lcols))]
j = 0
fileIter.seek(ind[c*2])
d2[j] = marshal.load(fileIter)
j+=1
while True:
tup = []
for col in xrange(len(lcols)):
try:
tup.append(d2[col][row])
except :
d = 1
break
if d == 1:
break
yield tup
tup = []
row+=1
fileIter.seek(next)
except:
break
if mode == 'row':
try:
d2 = cPickle.Unpickler(fileIter).load()
yield d2
while True:
try:
s = struct.unpack("i",fileIter.read(4))
for row in cPickle.loads(zlib.decompress(fileIter.read(s[0]))):
yield row
except:
break
except EOFError,e:
pass
