#!/usr/bin/env python
import MySQLdb
DATABASE_NAME = 'hero'
class HeroDB:
# init class and create a database
def __init__(self, name, conn, cur):
self.name = name
self.conn = conn
self.cur = cur
try:
cur.execute('create database if not exists ' + name)
conn.select_db(name)
conn.commit()
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# create a table
def createTable(self, name):
try:
ex = self.cur.execute
if ex('show tables') == 0:
ex('create table ' + name + '(id int, name varchar(20), sex int, age int, info varchar(50))')
self.conn.commit()
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# insert single record
def insert(self, name, value):
try:
self.cur.execute('insert into ' + name + ' values(%s,%s,%s,%s,%s)', value)
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# insert more records
def insertMore(self, name, values):
try:
self.cur.executemany('insert into ' + name + ' values(%s,%s,%s,%s,%s)', values)
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# update single record from table
# name: table name
# values: waiting to update data
def updateSingle(self, name, value):
try:
# self.cur.execute('update ' + name + ' set name=' + str(values[1]) + ', sex=' + str(values[2]) + ', age=' + str(values[3]) + ', info=' + str(values[4]) + ' where id=' + str(values[0]) + ';')
self.cur.execute('update ' + name + ' set name=%s, sex=%s, age=%s, info=%s where id=%s;', value)
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# update some record from table
def update(self, name, values):
try:
self.cur.executemany('update ' + name + ' set name=%s, sex=%s, age=%s, info=%s where id=%s;', values)
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# get record count from db table
def getCount(self, name):
try:
count = self.cur.execute('select * from ' + name)
return count
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# select first record from database
def selectFirst(self, name):
try:
self.cur.execute('select * from ' + name + ';')
result = self.cur.fetchone()
return result
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# select last record from database
def selectLast(self, name):
try:
self.cur.execute('SELECT * FROM ' + name + ' ORDER BY id DESC;')
result = self.cur.fetchone()
return result
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# select next n records from database
def selectNRecord(self, name, n):
try:
self.cur.execute('select * from ' + name + ';')
results = self.cur.fetchmany(n)
return results
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# select all records
def selectAll(self, name):
try:
self.cur.execute('select * from ' + name + ';')
self.cur.scroll(0, mode='absolute') # reset cursor location (mode = absolute | relative)
results = self.cur.fetchall()
return results
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# delete a record
def deleteByID(self, name, id):
try:
self.cur.execute('delete from ' + name + ' where id=%s;', id)
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# delete some record
def deleteSome(self, name):
pass
# drop the table
def dropTable(self, name):
try:
self.cur.execute('drop table ' + name + ';')
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
# drop the database
def dropDB(self, name):
try:
self.cur.execute('drop database ' + name + ';')
except MySQLdb.Error, e:
print "Mysql Error %d: %s" % (e.args[0], e.args[1])
def __del__(self):
if self.cur != None:
self.cur.close()
if self.conn != None:
self.conn.close()
