twitools/dbtools/__init__.py
2016-08-03 15:26:31 +02:00

108 lines
2.8 KiB
Python

import setuptools
import sqlite3, pymysql, pymysql.cursors
SQLITE = 0
MYSQL = 1
MARIADB = MYSQL
MIN = 0
MAX = 1
class dbObject:
# --------------------------------------------- Initialization -------------------------------------------------
def initMySQL(self, host, port, user, pwd, db):
self.conn = pymysql.connect(host = host, port = port, user = user, password = pwd, db = db, charset = "utf8mb4", cursorclass = pymysql.cursors.DictCursor)
self.cur = self.conn.cursor()
self.dbtype = MYSQL
self.host = host
self.port = port
self.user = user
self.pwd = pwd
self.db = db
def initSQLite(self, path):
self.conn = sqlite3.connect(path)
self.cur = self.conn.cursor()
self.dbtype = SQLITE
self.path = path
def __init__(self, dbtype = SQLITE, path = None, host = None, port = None, user = None, pwd = None, db = None):
if dbtype == SQLITE:
self.initSQLite(path or 'Database.db')
elif dbtype == MYSQL:
self.initMySQL(host or 'localhost', port or 3306, user, pwd, db)
else:
raise ValueError("Unknown database type %s." % str(dbtype))
# ---------------------------------------------- No more initialization ----------------------------------------
def closeConnection(self):
return self.conn.close()
def commit(self):
return self.conn.commit()
def executeQuery(self, query):
return self.cur.execute(query)
def getAll(self):
return self.cur.fetchall()
def getNext(self):
return self.cur.fetchone()
def isInitialized(self):
try:
self.executeQuery("SELECT * FROM tweets")
return True
except:
return False
def getFLDate(self, val = MIN):
if val == MIN:
mode = "MIN"
else:
mode = "MAX"
if self.dbtype == SQLITE:
return setuptools.getDate(str(list(self.executeQuery("SELECT %s(SUBSTR(timestamp,0,11)) FROM tweets" % mode))[0][0]))
else:
self.executeQuery("SELECT %s(SUBSTR(timestamp,0,11)) FROM tweets" % mode)
return setuptools.getDate(str(self.getNext()["%s(SUBSTR(timestamp,0,11))" % mode]))
def getFollowers(db):
db.executeQuery("SELECT id FROM followers WHERE `until` IS NULL;")
for i in db.getAll():
yield i[0]
def getFollowing(db):
db.executeQuery("SELECT id FROM following WHERE `until` IS NULL;")
for i in db.getAll():
yield i[0]
def getLatestMessage(db):
db.executeQuery("SELECT max(id) FROM messages")
try:
return int(db.getNext()[0])
except:
return 0
def getLatestTweet(db):
db.executeQuery("SELECT max(tweet_id) FROM tweets")
try:
return int(db.getNext()[0])
except:
return 0
def dbHelper():
if setuptools.dbtype() == SQLITE:
return dbObject(dbtype=SQLITE, path=setuptools.dbpath())
elif setuptools.dbtype() == MYSQL:
return dbObject(dbtype=MYSQL, host=setuptools.dbhost(), user=setuptools.dbuser(), pwd=setuptools.dbpass(), db=setuptools.dbname())
else:
raise setuptools.SetupException()