Method Extend

schema/schema.go:569–611

Extend extends target schema

(fromSchema *Schema)

// Extend extends target schema
func (schema *Schema) Extend(fromSchema *Schema) error {
	if schema.Parent == "" {
		schema.Parent = fromSchema.Parent
	}
	if schema.Prefix == "" {
		schema.Prefix = fromSchema.Prefix
	}
	if schema.URL == "" {
		schema.URL = fromSchema.URL
	}
	if schema.NamespaceID == "" {
		schema.NamespaceID = fromSchema.NamespaceID
	}
	schema.JSONSchema["properties"] = util.ExtendMap(
		util.MaybeMap(schema.JSONSchema["properties"]),
		util.MaybeMap(fromSchema.JSONSchema["properties"]))

	if util.ContainsString(util.MaybeStringList(schema.OrderPropertiesBefore), fromSchema.ID) {
		schema.JSONSchema["propertiesOrder"] = util.ExtendStringList(
			util.MaybeStringList(schema.JSONSchema["propertiesOrder"]),
			util.MaybeStringList(fromSchema.JSONSchema["propertiesOrder"]))
	} else {
		schema.JSONSchema["propertiesOrder"] = util.ExtendStringList(
			util.MaybeStringList(fromSchema.JSONSchema["propertiesOrder"]),
			util.MaybeStringList(schema.JSONSchema["propertiesOrder"]))
	}

	schema.JSONSchema["required"] = util.ExtendStringList(
		util.MaybeStringList(fromSchema.JSONSchema["required"]),
		util.MaybeStringList(schema.JSONSchema["required"]))
MergeAction:
	for _, action := range fromSchema.Actions {
		for _, existingAction := range schema.Actions {
			if action.ID == existingAction.ID {
				continue MergeAction
			}
		}
		schema.Actions = append(schema.Actions, action)
	}
	schema.Metadata = util.ExtendMap(schema.Metadata, fromSchema.Metadata)
	schema.IsolationLevel = util.ExtendMap(schema.IsolationLevel, fromSchema.IsolationLevel)
	return schema.Init()
}

//Titles returns list of Titles
func (schema *Schema) Titles() []string {