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module com { module sun { module star { module ucb {

/** provides read access to a fragment of the hierarchy data.

    <p>A hierarchy data source provides access to a tree of hierarchy data
    nodes. Each hierarchy data node, except the root node, has a parent that
    is a hierarchy data node too. A hierarchy data node has a name.

    <p>Each hierarchy data node has three data members:

    <ul>
    <li>"Title", which is of type `string`. It contains a title
    for the node. This value must not be empty.
    <li>"TargetURL", which is of type `string`</li> It may contain
    any URL, which will be treated as the target of a hierarchy link.
    <li>"Children", which is of type HierarchyDataReadAccess or
    of type HierarchyDataReadWriteAccess</li>, depending on the
    type of the node. This member provides access to the children of a node.
    </ul>
*/
published service HierarchyDataReadAccess
{
    /** gives access to the data members of a hierarchy data node.

        <p>Examples:
        <ul>
        <li><code>getByName( "Title" )</code> will return an `any`
        containing a string containing the title of the node.
        </li>
        <li><code>getByName( "Children" )</code> will return an `any`
        containing an implementation of service
        HierarchyDataReadAccess, if it was called on a read-only
        node. It will return an implementation of service
        HierarchyDataReadWriteAccess if it was called on a
        writable node.
        </li>
        </ul>
     */
    interface com::sun::star::container::XNameAccess;

    /** gives access to the data members of a hierarchy data node as well
        as to any child nodes or to the data members of child nodes using a
        hierarchical name.

        <p>A hierarchical name consists of segments that are separated by a
        single slash ("/"). There is neither a leading nor a trailing slash
        allowed.

        <ul>
        <li>
        path = segment ( '/' segment )*
        </li>
        <li>
        segment = '[' quoted-string ']'
        </li>
        <li>
        quoted-string = "'" escaped-string "'"
        </li>
        <li>
        escaped-string = escaped according to XML attribute naming conventions
        </li>
        </ul>

        <p>Examples:
        <ul>
        <li>
        <code>getByHierarchicalName( "Title" )</code> will return an
        `any` containing a string containing the title of the node
        itself.
        </li>
        <li>
        <code>getByHierarchicalName( "Children/['subnode1']" )</code> will give
        access to the child node named "subnode1" of the node. It will return
        an `any` containing an implementation of service
        HierarchyDataReadAccess, if it was called on a read-only
        node. It will return an implementation of service
        HierarchyDataReadWriteAccess if it was called on a
        writable node.
        </li>
        <li>
        <code>getByHierarchicalName( "Children/['subnode2']/TargetURL" )</code>
        will give direct access to the "TargetURL" data member of the child node
        named "subnode2" of the node. It will return an `any`
        containing a `string` containing the target URL of the node.
        </li>
        <li>
        <code>getByHierarchicalName( "Children/['subnode3']/Children" )</code>
        will give direct access to the "Children" data member of the child node
        named "subnode3" of the node. It will return an `any`
        containing an implementation of service
        HierarchyDataReadAccess, if it was called on a read-only
        node. It will return an implementation of service
        HierarchyDataReadWriteAccess if it was called on a
        writable node.
        </li>
        </ul>
     */
    interface com::sun::star::container::XHierarchicalNameAccess;

    /** allows registering listeners that observe the hierarchy data source.

        <p>A client can register an
        com::sun::star::util::XChangesListener, which will
        receive notifications for any changes within the hierarchy (fragment)
        this object represents.

        <p>An implementation should collect as many changes as possible into a
        single com::sun::star::util::ChangesEvent.
    */
    interface com::sun::star::util::XChangesNotifier;

    /** allows controlling or observing the lifetime of the hierarchy data
        access object.
     */
    interface com::sun::star::lang::XComponent;
};


}; }; }; };

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