GetSURating - Return the number of good/bad ratings from users.

    The GetSURating CGI script allows rating from end users for one or more
    Structural Units to be returned in XML format.

    *username* - Name of user running this CGI script. Required unless web
    server authentication is in use (when it is, the web server
    authenticated user is used instead).
    *password* - Password for the user. This is only required if the web
    server is not handling the user authentication and if no security hash
    parameter is being given.
    *security_hash* - An opaque value used to authenticate the user without
    requiring the password to be sent. This value is generated by a previous
    execution of a LUMP API script and may well be time limited. It is only
    required if no password or webserver authentication is done.
    *act_as* - Users in the SysAdmins group can elect to act on the behalf
    of other users once they are themselves authenticated. If this parameter
    is present it should contain the username of the user that should be
    switched to if this option is available and the real user has been
    authenticated successfully. Optional.
    *session_id* - An opaque string as far as the server is concerned that
    is intended solely to allow async clients to differentiate different
    results more easily. Optional.
    *json* - requests that results be returned in JSON format rather than
    *callback* - Supplies a JSONP callback. Optional and if given the
    results are returned in JSONP format rather than XML.

  Specific for this script
    *suid* - ID(s) of the root Structural Unit(s) for which we need to
    return ratings.

        The script returns an XML or JSON/JSONP document (depending on
        whether *json* or *callback* parameters have been set in the
        request). The response contains a list of ratings, one rating per
        structural unit. Each rating specifies the structural unit ID, and
        counts of the good and bad ratings from that SU.



        Copyright 2012 Loughborough University Library

        Permission is granted to copy, distribute and/or modify this
        document under the terms of the GNU Free Documentation License,
        Version 1.2 or any later version published by the Free Software
        Foundation; with no Invariant Sections, with no Front-Cover Texts,
        and with no Back-Cover Texts.

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