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synchronizator-go/pkg/collection.go

56 lines
1.4 KiB
Go

package synchronizator
import (
"fmt"
"strings"
)
type default_collection struct {
platform_name string
}
func (collection *default_collection) ToNode() (string, []byte, error) {
platform_name := strings.ToUpper(collection.platform_name)
return platform_name + "_DEFAULT", nil, nil
}
func (collection *default_collection) FromNode(_class string, name string, metadata []byte) error {
if _class != "DEFAULT" {
return fmt.Errorf("invalid class %s", _class)
}
return nil
}
// Utility struct to represent a collection of nodes, it's a [Node] itself so all
// the node's functionality is available.
type Collection struct {
Node // Underlaying node info
childs []*Node // Child nodes
}
// Internal RelationshipClass to handle the collection to node relationship
type collection_relation struct{}
func (collection *collection_relation) ToRelationship() (string, []byte, error) {
return "COLLECTION_HAS", nil, nil
}
func (collection *collection_relation) FromRelationship(_class string, metadata []byte) error {
if _class != "COLLECTION_HAS" {
return fmt.Errorf("invalid class %s", _class)
}
return nil
}
// Adds a new child to this collection. Use the underlaying node's AddRelation
// method.
func (collection *Collection) AddChild(node *Node) error {
_, err := collection.AddRelation(&collection_relation{}, node.Id)
if err != nil {
return err
}
collection.childs = append(collection.childs, node)
return nil
}