Method merge

query/outputnode.go:886–918

(parent, child []fastJsonNode)

}

func (enc *encoder) merge(parent, child []fastJsonNode) ([]fastJsonNode, error) {
	if len(parent) == 0 {
		return child, nil
	}

	// Here we merge two slices of maps.
	mergedList := make([]fastJsonNode, 0)
	cnt := 0
	for _, pa := range parent {
		for _, ca := range child {
			paCopy, paNodeCount := enc.copyFastJsonList(pa)
			caCopy, caNodeCount := enc.copyFastJsonList(ca)

			cnt += paNodeCount + caNodeCount
			if cnt > x.Config.LimitNormalizeNode {
				return nil, errors.Errorf(
					"Couldn't evaluate @normalize directive - too many results")
			}

			if paCopy == nil {
				paCopy = caCopy
			} else {
				temp := paCopy
				for temp.next != nil {
					temp = temp.next
				}
				temp.next = caCopy
			}
			mergedList = append(mergedList, paCopy)
		}
	}
	return mergedList, nil
}

// normalize returns all attributes of fj and its children (if any).
func (enc *encoder) normalize(fj fastJsonNode) ([]fastJsonNode, error) {