package mydb

// Record is the equivalence between concrete database schemas and Go values.
type Record interface {
	Store(sess Session) Store
}

// HasConstraints is an interface for records that defines a Constraints method
// that returns the record's own constraints.
type HasConstraints interface {
	Constraints() Cond
}

// Validator is an interface for records that defines an (optional) Validate
// method that is called before persisting a record (creating or updating).  If
// Validate returns an error the current operation is cancelled and rolled
// back.
type Validator interface {
	Validate() error
}

// BeforeCreateHook is an interface for records that defines an BeforeCreate
// method that is called before creating a record. If BeforeCreate returns an
// error the create process is cancelled and rolled back.
type BeforeCreateHook interface {
	BeforeCreate(Session) error
}

// AfterCreateHook is an interface for records that defines an AfterCreate
// method that is called after creating a record. If AfterCreate returns an
// error the create process is cancelled and rolled back.
type AfterCreateHook interface {
	AfterCreate(Session) error
}

// BeforeUpdateHook is an interface for records that defines a BeforeUpdate
// method that is called before updating a record. If BeforeUpdate returns an
// error the update process is cancelled and rolled back.
type BeforeUpdateHook interface {
	BeforeUpdate(Session) error
}

// AfterUpdateHook is an interface for records that defines an AfterUpdate
// method that is called after updating a record. If AfterUpdate returns an
// error the update process is cancelled and rolled back.
type AfterUpdateHook interface {
	AfterUpdate(Session) error
}

// BeforeDeleteHook is an interface for records that defines a BeforeDelete
// method that is called before removing a record. If BeforeDelete returns an
// error the delete process is cancelled and rolled back.
type BeforeDeleteHook interface {
	BeforeDelete(Session) error
}

// AfterDeleteHook is an interface for records that defines a AfterDelete
// method that is called after removing a record. If AfterDelete returns an
// error the delete process is cancelled and rolled back.
type AfterDeleteHook interface {
	AfterDelete(Session) error
}