DAV::resourcetype

###Purpose

Specifies the nature of the resource.

###Protected

SHOULD be protected. Resource type is generally decided through the operation creating the resource (MKCOL vs PUT), not by PROPPATCH.

###COPY/MOVE behavior

Generally a COPY/MOVE of a resource results in the same type of resource at the destination.

###Description

MUST be defined on all DAV-compliant resources. Each child element identifies a specific type the resource belongs to, such as 'DAV::collection', which is the only resource type defined by this specification (see RFC 4918, Section 14.3). If the element contains the 'DAV::collection' child element plus additional unrecognized elements, it should generally be treated as a collection. If the element contains no recognized child elements, it should be treated as a non-collection resource. The default value is empty. This element MUST NOT contain text or mixed content. Any custom child element is considered to be an identifier for a resource type.

###Example

(fictional example to show extensibility)

   <x:resourcetype xmlns:x="DAV:">
       <x:collection/>
       <f:search-results xmlns:f="http://www.example.com/ns"/>
   </x:resourcetype>

DTD

RFC 4918 doesn't specify a DTD, but the examples and the description imply the following:

<!ELEMENT resourcetype ANY >

Valid child elements are elements that represent a resource type. Known resource types are:

• DAV::collection
• urn:ietf:params:xml:ns:caldav:calendar
• urn:ietf:params:xml:ns:carddav:addressbook.