dms-client/util/simple_sqlite3_tool.py

# coding: utf-8
# Author：tajochen

import sqlite3
import os


class SimpleSQLite3Tool:
    """
    simpleToolSql for sqlite3
    简单数据库工具类
    编写这个类主要是为了封装sqlite，继承此类复用方法
    """


def __init__(self, filename="stsql"):
    """
    初始化数据库，默认文件名 stsql.db
    filename：文件名
    """
    self.filename = filename
    self.db = sqlite3.connect(self.filename)
    self.c = self.db.cursor()


def close(self):
    """
    关闭数据库
    """
    self.c.close()
    self.db.close()


def execute(self, sql, param=None):
    """
    执行数据库的增、删、改
    sql：sql语句
    param：数据，可以是list或tuple，亦可是None
    return：成功返回True
    """
    try:
        if param is None:
            self.c.execute(sql)
        else:
            if type(param) is list:
                self.c.executemany(sql, param)
            else:
                self.c.execute(sql, param)
        count = self.db.total_changes
        self.db.commit()
    except Exception as e:
        print(e)
        return False, e
    if count > 0:
        return True
    else:
        return False


def query(self, sql, param=None):
    """
    查询语句
    sql：sql语句
    param：参数,可为None
    return：成功返回True
    """
    if param is None:
        self.c.execute(sql)
    else:
        self.c.execute(sql, param)
    return self.c.fetchall()


# def set(self,table,field=" * ",where="",isWhere=False):
#     self.table = table
#     self.filed = field
#     if where != "" :
#         self.where = where
#         self.isWhere = True
#     return True


if __name__ == "__main__":
    # 数据库文件位置
    sql = SimpleSQLite3Tool("../test.db")
    f = sql.execute("create table test (id int not null,name text not null,age int);")
    print("ok")
    sql.execute("insert into test (id,name,age) values (?,?,?);", [(1, 'abc', 15), (2, 'bca', 16)])
    res = sql.query("select * from test;")
    print(res)
    sql.execute("insert into test (id,name) values (?,?);", (3, 'bac'))
    res = sql.query("select * from test where id=?;", (3,))
    res = sql.query("select * from data_collection_info;")
    print(res)
    sql.close()