[UIMA-6381] Component type for FSList types not retained

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.2.0SDK
• Component/s: Core Java Framework
• Assignee: Unassigned
• Reporter: Richard Eckart de Castilho
• Created: 05/Aug/21 09:35
• Updated: 05/Aug/21 09:50

Description

A element type that is defined on a FSList-typed feature is not retained when the type system description is later extracted from the type system of a CAS.

  @Test
  public void test() throws Exception {
    TypeSystemDescription tsd = UIMAFramework.getResourceSpecifierFactory()
            .createTypeSystemDescription();
    TypeDescription td = tsd.addType("Type", null, CAS.TYPE_NAME_ANNOTATION);
    FeatureDescription expected = td.addFeature("feature", null, CAS.TYPE_NAME_FS_LIST,
            CAS.TYPE_NAME_ANNOTATION, null);
    CAS cas = CasCreationUtils.createCas(tsd, null, null, null);
    TypeSystem ts = cas.getTypeSystem();
    FeatureDescription actual = TypeSystemUtil.type2TypeDescription(ts.getType("Type"), ts)
            .getFeatures()[0];
    assertThat(actual).isEqualTo(expected);
  }

It is not entirely clear if this is a bug or if it is by design. However, since the graphical type system editor for Eclipse offers setting an element type of FSList features, it seems more like a bug.