MySQL Twist return dictionary adbapi

Question

Is there a way to return the result of a dictionary from an adbapi query in MySQL?

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

By default, the tuple is returned.

['Bob', '9123 4567']

For simple Python and MySQL, we can use MySQLdb.cursors.DictCursor . But how to use it with twisted adbapi

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UPD: I solved it, but I think there should be a better way. My solution: just override the * _runInteraction * method of the adbapi.ConnectionPool class.

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

You can direct MySQLdb to use DictCursorby passing it as the value of a cursorclassfunction argument connect. ConnectionPoolallows you to pass arbitrary arguments to the connect method:

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

, dict , runQuery("SELECT 1") ({'1': 1L},)