Twisted MySQL adbapi返回字典

Question

有没有办法将字典结果从adbapi查询返回给MySQL？

[name: 'Bob', phone_number: '9123 4567']

默认返回元组.

['Bob', '9123 4567']

对于简单的Python和MySQL,我们可以使用MySQLdb.cursors.DictCursor.但如何使用扭曲的adbapi

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UPD:我解决了,但我认为应该有更好的方法.我的解决方案:只需覆盖adbapi.ConnectionPool类的*_runInteraction*方法.

class MyAdbapiConnectionPool(adbapi.ConnectionPool):
def _runInteraction(self, interaction, *args, **kw):
    conn = self.connectionFactory(self)
    trans = self.transactionFactory(self, conn)
    try:
        result = interaction(trans, *args, **kw)
        if(result and isinstance(result[0], (list, tuple))):
            colnames = [c[0] for c in trans._cursor.description]
            result = [dict(zip(colnames, item)) for item in result]         
        trans.close()
        conn.commit()
        return result
    except:
        excType, excValue, excTraceback = sys.exc_info()
        try:
            conn.rollback()
        except:
            log.err(None, 'Rollback failed')
        raise excType, excValue, excTraceback

Answer 1

您可以DictCursor通过将MySQLdb 作为cursorclass参数的值传递给connect函数来指示MySQLdb使用. ConnectionPool允许您将任意参数传递给connect方法:

import MySQLdb
pool = ConnectionPool("MySQLdb", ..., cursorclass=MySQLdb.cursors.DictCursor)
...

当你运行一个查询时,你会得到一个dict返回而不是一个元组,例如runQuery("SELECT 1")产生一个结果({'1': 1L},)