thehajime

• Make a POST to /v1/statement with the query
• You get back a JSON document that might contain a nextUri link
• The document will contain columns if available
• The document will contain data if available
• The columns field will always be set if data is set (and usually earlier)
• If there is no nextUri link, then the query is finished (either successfully completed or failed)
• Otherwise, keep following the nextUri link
• The status field is only for displaying to humans as a hint about the query's state on the server. It is not in sync in the query state from the client's perspective and must not be used to determine whether the query is finished.
• The document will contain an error field if the query has failed — this is how you distinguish between a successfully completed query and a failed query when there is no more nextUri link
• If the response is an HTTP 503, sleep 50-100ms and try again

thehajime

def xmltodict (node) :

    def _xmltodict (node) :
        if len (node) > 0:
            dic = {}
            for child in node :
                [key, value]  = _xmltodict (child)
                if dic.has_key (key) :
                    if isinstance (dic[key], list) :
                        dic[key].append (value)