singletons

README

Singletons

Singletons system view

Documentation

Index

• Variables
• type Singletons
  • func New() *Singletons
  • func (st *Singletons) ID(qName appdef.QName) (istructs.RecordID, error)
  • func (st *Singletons) Prepare(storage istorage.IAppStorage, versions *vers.Versions, appDef appdef.IAppDef) (err error)

Variables

var ErrNameNotFound = errors.New("name not found")

var ErrSingletonIDsExceeds = fmt.Errorf("the maximum number of singleton document identifiers (%v) has been exceeded", istructs.MaxSingletonID)

Types

type Singletons

type Singletons struct {
	// contains filtered or unexported fields
}

Singletons IDs system view.

Use ID() to obtain singleton ID by its QName.
Use Prepare() to load Singletons from storage.

func New

func New() *Singletons

Creates and returns new singletons system view

func (*Singletons) ID

func (st *Singletons) ID(qName appdef.QName) (istructs.RecordID, error)

Returns ID for singleton with specified QName

func (*Singletons) Prepare

func (st *Singletons) Prepare(storage istorage.IAppStorage, versions *vers.Versions, appDef appdef.IAppDef) (err error)

Loads all singletons IDs from storage, add all known application singletons and store if some changes. Must be called at application starts