Function getScopeCollTypeMappings

collection_utils.go:174–214

getScopeCollTypeMappings will return a deduplicated list of collection names when skipMappings is enabled.

(im *mapping.IndexMappingImpl,
	skipMappings bool)

// getScopeCollTypeMappings will return a deduplicated
// list of collection names when skipMappings is enabled.
func getScopeCollTypeMappings(im *mapping.IndexMappingImpl,
	skipMappings bool) (scope string,
	cols []string, typeMappings []string, err error) {
	// index the _default/_default scope and collection when
	// default mapping is enabled.
	if im.DefaultMapping.Enabled {
		scope = defaultScopeName
		cols = []string{defaultCollName}
		typeMappings = []string{""}
	}

	hash := make(map[string]struct{}, len(im.TypeMapping))
	for tp, dm := range im.TypeMapping {
		if !dm.Enabled {
			continue
		}
		s, c, t := scopeCollTypeMapping(tp)
		key := c
		if !skipMappings {
			key += t
		}
		if _, exists := hash[key]; !exists {
			hash[key] = struct{}{}
			cols = append(cols, c)
			if !skipMappings {
				typeMappings = append(typeMappings, t)
			}
		}
		if scope == "" {
			scope = s
			continue
		}
		if scope != s {
			return "", nil, nil, fmt.Errorf("collection_utils: multiple scopes"+
				" found: '%s', '%s'; index can only span collections on a single"+
				" scope", scope, s)
		}
	}

	return scope, cols, typeMappings, nil
}

// validateScopeCollFromMappings performs the $scope.$collection
// validations in the type mappings defined. It also performs