Method get

mindmeld/query_cache.py:203–224

Get a cached ProcessedQuery by id. Note: this call should never fail as it is required that the row_id exist in the database before this method is called. Exceptions may be thrown in the case of database corruption. The method caches the previously retrieved elemen

(self, row_id)

    @lru_cache(maxsize=1)
    def get(self, row_id):
        """
        Get a cached ProcessedQuery by id.  Note: this call should never fail as
        it is required that the row_id exist in the database before this method
        is called. Exceptions may be thrown in the case of database corruption.

        The method caches the previously retrieved element because it is common
        for a set of iterators (examples and labels) to retrieve the same row_id
        in sequence.  The cache prevents extra db lookups in this case.

        Args:
            row_id(integer): The unique id returned by QueryCache.key_to_row_id() or
                             QueryCache.put().
        Returns:
            ProcessedQuery: The ProcessedQuery associated with the identifier.
        """
        cursor = self.connection.cursor()
        cursor.execute("""
        SELECT query FROM queries WHERE rowid=(?);
        """, (row_id,))
        row = cursor.fetchone()
        return ProcessedQuery.from_cache(json.loads(row[0]))

    def get_value(self, domain, intent, query_text):
        row_id = self.key_to_row_id(self.get_key(domain, intent, query_text))