query[0] yields index out of range where list(query)[0] works fine

[jmizgajski]

Hi there,

We created a custom type based on Indexable and MappingType that registers all subclasses in a meta class so that they can be used in commands that do very fast batch indexing and tests that set up all indices (properly prefixed) for you (soon I'll do a pull request). However I have run in to a very unusual problem where I cannot get the first result of a query in a regular way when list(query)[0] works fine, the query is in simple form of: S(UserMapping).filter(id=some_id).

Here is a gist of the few files that we wrote, BatchIndexable is a class we use as a parent for all our mappings.

[jmizgajski]

A problem seems to be with the self._clone() method of S when debuging

    def __getitem__(self, k):
        """Handles slice and indexes for Elasticsearch results"""
        new = self._clone()
        if isinstance(k, slice):
            new.start, new.stop = k.start or 0, k.stop
            return new
        else:
            new.start, new.stop = k, k + 1
            return list(new)[0]

list(self) returns 1 element when list(new) with is empty

[jmizgajski]

btw, we are running elasticsearch 1.1, but did not have any problems without our custom modifications.

[jmizgajski]

We figured it out, our es got broken by https://github.com/elasticsearch/elasticsearch-lang-python/tree/es-1.1. Nonetheless please chekout the gist and tell me what you think. I was hoping for some directions about where to put it in elasticutils when I'll do a pull request.

[willkg]

Sticking this in the ElasticUtils 0.10 milestone.

[jmizgajski]

That's awesome, maybe we could arrange a hangout so you could instruct me how to structure it for a PR, by the way we updated it a bit in the meantime and it works great. You can reach me at mizgajski dottt jan attt gmail.

[willkg]

Is this fixed now? I thought it was still an issue.

[jmizgajski]

I'm not experiencing this issue anymore, but I uninstalled the culprit plugin