[umbrello] [Bug 502519] New: xmllint complains about element Model: validity error : Syntax of value for attribute xmi.id of Model is not valid"

[Ralf Habacker]

https://bugs.kde.org/show_bug.cgi?id=502519

            Bug ID: 502519
           Summary: xmllint complains about element Model: validity error
                    : Syntax of value for attribute xmi.id of Model is not
                    valid"
    Classification: Applications
           Product: umbrello
           Version: unspecified
          Platform: Other
                OS: All
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: umbrello-devel at kde.org
          Reporter: ralf.habacker at freenet.de
            Blocks: 415989
  Target Milestone: ---

When checking the validation support for xmi files requested on
https://bugs.kde.org/show_bug.cgi?id=415989#c2, problems occurred in connection
with xml attributes of type ID and IDREFS.

STEPS TO REPRODUCE
1. git clone umbrello sources from git at invent.kde.org:sdk/umbrello.git
2. checkout branch release/25.04
3. enter checked out directory
3. run `tools/lint-xmi-files models/diagrams/class`

OBSERVED RESULT
The tools started in 3. prints out 

models/diagrams/class/all-elements.xmi:28: element Model: validity error :
Syntax of value for attribute xmi.id of Model is not valid
models/diagrams/class/all-elements.xmi:32: element DataType: validity error :
Syntax of value for attribute xmi.id of DataType is not valid
models/diagrams/class/all-elements.xmi:60: element Interface: validity error :
Syntax of value for attribute xmi.id of Interface is not valid
models/diagrams/class/all-elements.xmi:62: element TemplateParameter: validity
error : Syntax of value for attribute namespace of TemplateParameter is not
valid
models/diagrams/class/all-elements.xmi:129: element Model: validity error :
Syntax of value for attribute xmi.id of Model is not valid
models/diagrams/class/all-elements.xmi:132: element Model: validity error :
Syntax of value for attribute xmi.id of Model is not valid
models/diagrams/class/all-elements.xmi:135: element Model: validity error :
Syntax of value for attribute xmi.id of Model is not valid
models/diagrams/class/all-elements.xmi:138: element Model: validity error :
Syntax of value for attribute xmi.id of Model is not valid
models/diagrams/class/all-elements.xmi:30: element Package: validity error :
IDREFS attribute namespace references an unknown ID "Logical"
models/diagrams/class/all-elements.xmi:30: element Package: validity error :
IDREFS attribute namespace references an unknown ID "View"
models/diagrams/class/all-elements.xmi:45: element Class: validity error :
IDREFS attribute namespace references an unknown ID "Logical"
models/diagrams/class/all-elements.xmi:45: element Class: validity error :
IDREFS attribute namespace references an unknown ID "View"
models/diagrams/class/all-elements.xmi:46: element Enumeration: validity error
: IDREFS attribute namespace references an unknown ID "Logical"
models/diagrams/class/all-elements.xmi:46: element Enumeration: validity error
: IDREFS attribute namespace references an unknown ID "View"
models/diagrams/class/all-elements.xmi:51: element Package: validity error :
IDREFS attribute namespace references an unknown ID "Logical"
models/diagrams/class/all-elements.xmi:51: element Package: validity error :
IDREFS attribute namespace references an unknown ID "View"
models/diagrams/class/all-elements.xmi:67: element Class: validity error :
IDREFS attribute namespace references an unknown ID "Logical"
models/diagrams/class/all-elements.xmi:67: element Class: validity error :
IDREFS attribute namespace references an unknown ID "View"
models/diagrams/class/all-elements.xmi:72: element Dependency: validity error :
IDREFS attribute namespace references an unknown ID "Logical"
models/diagrams/class/all-elements.xmi:72: element Dependency: validity error :
IDREFS attribute namespace references an unknown ID "View"

EXPECTED RESULT
The errors should not be shown

SOFTWARE/OS VERSIONS
Operating System: openSUSE Leap 15.6
KDE Plasma Version: 5.27.11
KDE Frameworks Version: 5.115.0
Qt Version: 5.15.12

ADDITIONAL INFORMATION
According to
https://www.liquid-technologies.com/Reference/Glossary/DTD_Datatypes_ID.html
there are some limitations for valid ID and IDREFS values:  

    It must conform to the EBNF for "Name". In simple terms this means a "Name"
has to start with a letter or ':' or '_'. The rest of the characters must be
numbers, letters ':', '_', '-', or '.' it can not contain any spaces.

For example, since “Logical View” is used here as the value for the 'xmi.id'
attribute, the problem is that the value contains spaces, which is not
permitted.
Other examples are:

    <UML:Model stereotype=“folder” ... xmi.id=“Use Case View” name=“Use Case
View”>
    <UML:Model stereotype=“folder” ... xmi.id=“Component View” name=“Component
View”>
    <UML:Model stereotype=“folder” ... xmi.id=“Deployment View”
name=“Deployment View”>
    <UML:Model stereotype=“folder” ... xmi.id=“Entity Relationship Model”
name=“Entity Relationship Model”>

The problem with IDREFS occurs with references that contain spaces, which
occurs, for example, with the 'namespace' attribute as shown below:

      <UML:Package stereotype="folder" namespace="Logical View" ... "
xmi.id="Datatypes" name="Datatypes">


Referenced Bugs:

https://bugs.kde.org/show_bug.cgi?id=415989
[Bug 415989] Dosnt Open/Delete class Diagram element
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