UCM 1.1 RTF Avatar
  1. OMG Issue

UCM11 — Create a DTD for the XML syntax

  • Key: UCM11-6
  • Status: open  
  • Source: THALES ( Thomas Vergnaud)
  • Summary:

    UCM 1.0 defines an XML schema, which is sufficient to validate file structures.
    However, XML provides a nice feature: entities. Entities allow automatic string substitution. Some of them are standard. For example:  , ", >

    As UCM relies on absolute names to reference elements, XML files can become verbose:

      <policyDef applicability="on_component_only" aspect="::core::comp_exec::comp_trig_asp" extends="::core::comp_exec::self_exec_comp" name="prdc_self_exec_comp">
        <configParam name="psec_period" type="::core::basic_svc::clock::api::ucm_timeval_t"/>
        <configParam name="psec_priority" type="contracts::priority_t"/>
        <configParam name="psec_offset" type="::core::basic_svc::clock::api::ucm_timeval_t"/>

    It would be nice to be able to write instead:

      <policyDef applicability="on_component_only" aspect="&ce;::comp_trig_asp" extends="&ce;::self_exec_comp" name="prdc_self_exec_comp">
        <configParam name="psec_period" type="&ucm_timeval_t;"/>
        <configParam name="psec_priority" type="contracts::priority_t"/>
        <configParam name="psec_offset" type="&ucm_timeval_t;"/>

    XML entities require the specification of a DTD.

  • Reported: UCM 1.0b2 — Mon, 23 Oct 2017 15:39 GMT
  • Updated: Mon, 23 Oct 2017 15:40 GMT