Converged Application Server lets you access an XML Document Management Server (XDMS). The XDMS handles the management of user-generated XML documents stored on the network, such as authorization rules and contact and group lists (also referred to as resource lists).

The XML Configuration Access Protocol Server (XCAP server), provides an interface that allows for the manipulation of service-related data stored as XML documents within the XDMS. The XCAP specification defines how an HTTP address (or URI) can identify the way XML documents are stored on an XCAP server. It also defines how the URI can be used to identify entire XML documents, individual elements, or XML attributes that can be retrieved, updated, or deleted.

• An Application Unique ID (AUID), which uniquely identifies the application usage, must be created.

• The XML schema must be defined.

• The default namespace binding, which maps the namespace prefixes to the namespace URIs, must be set.

• The MIME type of the document must be defined.

• The XCAP server must be able to validate the content of each XCAP document that is being modified.

• The data in the XML document must have a well defined semantic.

• Naming conventions for XCAP client URIs must be set.

• Resource interdependencies, how changes to one resource will effect other resources, has to be determined.

The following operations are supported using XCAP:

• Retrieving an item

• Deleting an item

• Modifying an item

• Adding an item

The XCAP addressing mechanism is based on XML Path Language (XPath), a query language for selecting nodes in XML documents. The operations above can be executed on XML documents and elements. Operations to XML attributes are not supported, however, attributes can be handled indirectly by modifying the elements that contain them.