XMI 1.2 MAILINGLIST Avatar
  1. OMG Issue

XMI12 — Empty Fragment Identifier in Link

  • Key: XMI12-2
  • Legacy Issue Number: 5940
  • Status: open  
  • Source: Zuehlke Engineering ( Frank Pilhofer)
  • Summary:

    This is a feature request for the XMI 2.1 RTF. (Does
    it have a mailing list? I'm crossposting to the XML
    Schema FTF in case that list is still alive.)

    My base document is the proposed available specification
    (ptc/02-06-03). (I did not find a later version.)

    Section 2.10.2, "Linking" specifies that "the URI
    reference must be of the form URI#id_value, where URI
    locates the XML file containing the XML element to link
    to, and id_value is the value of the XML element's XMI
    id attribute."

    I propose to add the feature that if the URI does not
    contain a fragment, then the link is to the outermost
    document element of the referenced file.

    This is a common use case, and allows linking to a
    document that was provided by someone else and not
    annotated with values for the optional xmi:id attribute.

    Therefore I propose to change the text in 2.10.2.1 (the
    "Using the XMI href attribute to locate an XMI id" sub-
    section):

    The URI reference must be of the form URI#id_value,
    where URI locates the XML file containing the XML
    element to link to, and id_value is the value of
    the XML element's XMI id attribute.

    to

    If the URI reference contains a fragment identifier
    (as in URI#id_value), then the URI locates an XML
    file, and the fragment identifier is used to locate
    an XML element with the fragment identifier as its
    XMI id attribute. If the URI reference does not
    contain a fragment identifier, then the outermost
    document element of the XML file is referenced.

    And to change, in 2.10.2.2 (the "Using an XLink simple
    link and XPointer bare name to locate an XMI id" sub-
    section) likewise:

    The value of xlink:href must again be a URI reference
    of the form URI#id_value. In this case, id_value is
    technically an XPointer bare name, but it looks just
    like the id_value for the XMI href attribute.

    to

    The value of xlink:href must again be a URI reference,
    which is evaluated as above. If the URI reference
    contains a fragment identifier, which is then
    technically an XPointer bare name, then the fragment
    identifier is used to locate an XML element with the
    fragment identifier as its XMI id attribute in the
    referenced XML file. If the URI reference does not
    contain a fragment identifier, then the outermost
    document element of the XML file is referenced.

  • Reported: XMI 1.1 — Thu, 22 May 2003 04:00 GMT
  • Updated: Wed, 11 Mar 2015 11:15 GMT