85 lines
1.8 KiB
Python
85 lines
1.8 KiB
Python
import aiosqlite
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from .sor import SQLor
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select_stmt = """
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select
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$[fields]$
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from
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$[tables]$
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$[whereclause]$
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$[groupbyclause]$
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$[havingclause]$
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$[orderbyclause]$
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"""
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class Aiosqliteor(SQLor):
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@classmethod
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def isMe(self,name):
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return name=='aiosqlite'
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async def connect(self):
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"""
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dbdesc:
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path: 数据库文件路径（或 :memory:）
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"""
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dbdesc = self.dbdesc
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self.dbpath = dbdesc.get('path', ':memory:')
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self.conn = await aiosqlite.connect(self.dbpath)
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self.conn.row_factory = aiosqlite.Row # 支持 dict 访问
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self.dbname = self.dbpath
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async def close(self):
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await self.conn.close()
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async def enter(self):
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"""开启事务"""
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self.cur = await self.conn.cursor()
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async def exit(self):
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"""释放 cursor"""
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try:
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await self.cur.close()
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except:
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pass
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self.cur = None
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def grammar(self):
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return {
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'select':select_stmt,
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}
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def placeHolder(self,varname,i):
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if varname=='__mainsql__' :
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return ''
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return '?'
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def dataConvert(self,dataList):
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if type(dataList) == type({}):
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return dataList
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d = { i['name']:i['value'] for i in dataList }
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return d
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def pagingSQLmodel(self):
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return u"""select * from (%s) page_s limit $[page_size]$ offset $[offset]$"""
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def tablesSQL(self):
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sqlcmd = """SELECT name,sql as title FROM sqlite_master WHERE type='table'"""
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return sqlcmd
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def fieldsSQL(self,tablename=None):
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sqlcmd="""PRAGMA table_info(%s);""" % tablename
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return sqlcmd
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def fkSQL(self,tablename=None):
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tablename = tablename.lower()
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sqlcmd = """PRAGMA foreign_key_list('%s');""" % tablename
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return sqlcmd
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def pkSQL(self,tablename=None):
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tablename = tablename.lower()
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sqlcmd="""PRAGMA table_info('%s');""" % tablename
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return sqlcmd
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def indexesSQL(self,tablename=None):
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sqlcmd = """PRAGMA index_list('%s');""" % tablename
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return sqlcmd |