Principal

All Known Subinterfaces:

CalDavPrincipal, CardDavPrincipal, DavPrincipal, DirectoryGatewayCardDavPrincipal, DiscretePrincipal

All Known Implementing Classes:

DavPrincipals.AbstractDavPrincipal, DavPrincipals.AllDavPrincipal, DavPrincipals.AuthenticatedDavPrincipal, DavPrincipals.UnAuthenticatedDavPrincipal
```
public interface Principal
```
Marker interface to identify those classes which can act as a Principal. This can be a user or a group An absolute minimum requirement for a Principal is to be able to identify it, and this is represented by the sole method on this interface which is getIdentifier. Note that some Principals are defined by the webdav protocol so must be subject to explicit processing requirements. For this reason the principle identifier is a structured type which can be associated with a namespace and well known names within that namespace. There are 2 types of Principal - Discrete: identifies a particular resource, which might be a user or group. Users are always discrete, groups may be physical resources in which case they are represented as discrete resources. But groups may also be dynamically evaluated.. - DAV: a dynamically evaluated group as defined by the ACL spec. Eg the Authenticated group matches any user with an authenticated request. A dynamically evaluated group defined by the protocol is not a physical resource do does not have a corresponding href

- Nested Class Summary
  
  Nested Classes
  Modifier and Type Interface Description
  
  static interface Principal.PrincipleId
  A principleId represents a unique identifier for a principle.
- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  Principal.PrincipleId getIdenitifer()
  A means to identify the principle to webdav clients

- Method Detail
  - getIdenitifer
```
Principal.PrincipleId getIdenitifer()
```
    A means to identify the principle to webdav clients
    
    Returns: