xtree

type XNode interface {
	// UUID unique identifier for this node.
	UUID() string
	// Equals returns true if node is equal to this XNode
	Equals(node XNode) bool
	// Parents of this node, a node can be present multiple times in the tree.
	Parents() []XNode
	// IsParent return true if this node is parent of specified XNode
	IsParent(node XNode) bool
	// Children list of child XNodes
	Children() []XNode
	// AddChildren adds list of nodes to the list of children
	AddChildren(node []XNode)
	// AddParent to the list of parents.
	AddParent(node XNode)
	// RemoveParent from the list of parents
	RemoveParent(node XNode) error
	// RemoveChild from the list of children
	RemoveChild(node XNode) error
	// AddLink adds a link to another XNode
	AddLink(link XNode)
	// RemoveLink to XNode
	RemoveLink(link XNode) error
	// HasLink returns true if this node has a link to specified XNode
	HasLink(link XNode) bool
	// Walk tree beginning from this XNode
	Walk(cb XNodeIteratorCB) error
	// WalkToRoot iterate to root
	WalkToRoot(cb XNodeIteratorCB) error
	// MarkDown mark this XNode as down
	MarkDown()
	// MarkUp mark this XNode as up.
	MarkUp()
	// Status return status of xnode evaluating status of the parents as well.
	Status() XStatus
	// LocalStatus return local status of this XNode
	LocalStatus() XStatus
	// Data returns the user data stored in this xnode
	Data() interface{}
	// contains filtered or unexported methods
}

type XNodeIteratorCB func(xnode XNode) error

type XStatus string

type XTree interface {
	// Root of the xtree
	Root() XNode
	// Find returns XNode with matching UUID
	Find(uuid string) (XNode, error)
	// FindLinked returns XNodes that are linked to specified link.
	FindLinked(link XNode) ([]XNode, error)
	// SetLink links link to specified XNodes. It removes link from nodes
	// that are not in the linked list.
	SetLink(link XNode, linked []XNode) error
	// RemoveLink from all linked nodes.
	RemoveLink(link XNode) error
	// Insert XNode into the tree
	Insert(node XNode, parentUUIDs []string) error
	// Remove XNode and its children
	Remove(node XNode) error
}