Ejemplo n.º 1
0
// SourceInfo retrieves the source object including the canonical identifier.
func (n *NeoBackend) SourceInfo(mapping *models.Mapping) (string, int, error) {

	q := fmt.Sprintf(`match (o:%s)-[r:KNOWS {id:'%s'}]->(s:source {name:'%s'}) return o.canonical`, mapping.ObjectType, mapping.SourceID, mapping.Source)
	vals, err := graphExec([]string{q})
	if err != nil {
		return "", http.StatusInternalServerError, err
	}
	if len(vals) == 0 {
		return "resource not found", http.StatusNotFound, errors.New("resource not found")
	}
	v := vals[0]["o.canonical"]
	mapping.Canonical = v
	mapping.Object += "/" + v

	return mapping.Canonical, http.StatusOK, nil
}
Ejemplo n.º 2
0
// MapCreate creates a source object mapping to retrieve a canonical.
func (n *NeoBackend) MapCreate(mapping *models.Mapping) (code int, err error) {

	// Create the source.
	q := fmt.Sprintf(`merge (o:%s)-[r:KNOWS {id : '%s'}]->(s:source {name:'%s'}) on create set o.canonical='%s' return o.canonical`, mapping.ObjectType, mapping.SourceID, mapping.Source, mapping.Canonical)

	vals, err := graphExec([]string{q})
	if err != nil {
		return http.StatusInternalServerError, err
	}
	v := vals[0]["o.canonical"]
	if v != mapping.Canonical {
		log.Println("POST with ", mapping.Canonical, " but resource already exists with canonical:", v)
		mapping.Canonical = v
		return http.StatusConflict, nil
	}
	return http.StatusCreated, nil
}