Major
Detail
Major
Detail
#26382
                                                
                                                Error messages "Duplicate tag name..." when starting an application in the IDE from a TL-Studio
                                                
                                            #26405
                                                
                                                TTypeRewriter logs warning "Unable to resolve items by external reference" also unnecessarily
                                                
                                            #26431
                                                
                                                Changed superclass relationship leads to changed attribute list in the form editor only after a restart
                                                
                                            #26484
                                                
                                                In-app template for grid and tables: Function "Verifier for use as list item" does not get component model
                                                
                                            #26536
                                                
                                                When rendering HTML from TLScript expressions, configured renderers are not taken into account
                                                
                                            #26797
                                                
                                                Transaction with user input: invisible properties of the form model cannot be assigned values (initialized)
                                                
                                            #26885
                                                
                                                Constraints on declarative forms with arguments from a container reference lead to errors for new elements
                                                
                                            #26921
                                                
                                                ClassCastException when evaluating security rules that refer to (non-structuredElement) singletons of a module.
                                                
                                            #26922
                                                
                                                With generated subject classes, a default provider of an attribute in a non-structure class does not get a create context
                                                
                                            #26988
                                                
                                                In-app documentation generator does not extract documentation for overwritten config properties
                                                
                                            #27027
                                                
                                                Declarative forms: SelectField disappears after upload if option list depends on mandatory property
                                                
                                            #27042
                                                
                                                MaintenanceJspBase should write to the log first, then to the client, instead of the other way around.
                                                
                                            
                        Bugfix
                         
                    
                    If a form is created with the form editor and the option "Foreign objects" is used here, a form can be configured again for the representation of the foreign objects.
If this happens, a NullPointerException occurs:
Caused by: java.lang.NullPointerException at com.top_logic.element.layout.formeditor.FormEditorUtil.createAnotherMetaAttribute(FormEditorUtil.java:98) at com.top_logic.element.layout.formeditor.FormEditorUtil.addAnotherMetaAttribute(FormEditorUtil.java:157) at com.top_logic.element.layout.formeditor.implementation.FieldDefinitionTemplateProvider.createFormMember(FieldDefinitionTemplateProvider.java:391) at com.top_logic.element.layout.formeditor.implementation.FieldDefinitionTemplateProvider.addMember(FieldDefinitionTemplateProvider.java:339) at com.top_logic.element.layout.formeditor.implementation.FieldDefinitionTemplateProvider.createDisplayTemplate(FieldDefinitionTemplateProvider.java:140) at com.top_logic.model.form.implementation.AbstractFormElementProvider.createDesignTemplate(AbstractFormElementProvider.java:139) at com.top_logic.model.form.implementation.FormElementTemplateProvider.createTemplate(FormElementTemplateProvider.java:42) at com.top_logic.model.form.implementation.AbstractFormContainerProvider.createContentTemplate(AbstractFormContainerProvider.java:84) at com.top_logic.model.form.implementation.FormDefinitionTemplateProvider.createDesignTemplate(FormDefinitionTemplateProvider.java:63) at com.top_logic.element.layout.formeditor.FormEditorControl.createTemplate(FormEditorEditorControl.java:312) at com.top_logic.element.layout.formeditor.FormEditorControl.writeContent(FormEditorEditorControl.java:279) at com.top_logic.element.layout.formeditor.FormEditorEditorControl.internalWrite(FormEditorEditorControl.java:273) at com.top_logic.layout.basic.AbstractControlBase$ScopedRenderer.write(AbstractControlBase.java:1306) at com.top_logic.layout.basic.AbstractControlBase$ScopedRenderer.write(AbstractControlBase.java:1293) at com.top_logic.layout.basic.AbstractDisplayContext.renderScoped(AbstractDisplayContext.java:109) at com.top_logic.layout.basic.AbstractControlBase.write(AbstractControlBase.java:550)
Cause
Since there are no objects in design mode, tl:FormField for tl:AttributeUpdate are created in create mode. Since there are no identifiers for the objects of the base type and the "foreign type" that are supposed to be created, an attempt is made to use the same transient object, which fails.
Solution
Use a "domain" when creating the AttributeUpdate.
Test
- Open form editor for a type X` != `Open user account.
 - Select "Objects". 
    
- Select the type user account.
 - Configure form.
 - Select the attribute "User name" here.
 
 - Add an attribute of type X. 
    
- Expectation: No NullPointerException will occur.