def __and__()

in elasticsearch/dsl/query.py [0:0]

• 31 lines of code
• 16 McCabe index (conditional complexity)

    def __and__(self, other: Query) -> Query:
        q = self._clone()
        if isinstance(other, Bool):
            q.must += other.must
            q.must_not += other.must_not
            q.filter += other.filter
            q.should = []

            # reset minimum_should_match as it will get calculated below
            if "minimum_should_match" in q._params:
                del q._params["minimum_should_match"]

            for qx in (self, other):
                min_should_match = qx._min_should_match
                # TODO: percentages or negative numbers will fail here
                # for now we report an error
                if not isinstance(min_should_match, int) or min_should_match < 0:
                    raise ValueError(
                        "Can only combine queries with positive integer values for minimum_should_match"
                    )
                # all subqueries are required
                if len(qx.should) <= min_should_match:
                    q.must.extend(qx.should)
                # not all of them are required, use it and remember min_should_match
                elif not q.should:
                    q.minimum_should_match = min_should_match
                    q.should = qx.should
                # all queries are optional, just extend should
                elif q._min_should_match == 0 and min_should_match == 0:
                    q.should.extend(qx.should)
                # not all are required, add a should list to the must with proper min_should_match
                else:
                    q.must.append(
                        Bool(should=qx.should, minimum_should_match=min_should_match)
                    )
        else:
            if not (q.must or q.filter) and q.should:
                q._params.setdefault("minimum_should_match", 1)
            q.must.append(other)
        return q