{"record":{"id":"034d0b448290d0bd","repo":"hibernate/hibernate-orm","slug":"unsupported-member-supermember","errorCode":null,"errorMessage":"Unsupported member: \" + superMember","messagePattern":"Unsupported member: \" \\+ superMember","errorType":"exception","errorClass":"IllegalArgumentException","httpStatus":null,"severity":"error","filePath":"hibernate-core/src/main/java/org/hibernate/internal/util/GenericsHelper.java","lineNumber":81,"sourceCode":"\t\t}\n\t\telse {\n\t\t\tfinal var typeArguments = typeArguments( superclass, subclass );\n\t\t\tfor ( int i = 0; i < typeParameters.length; i++ ) {\n\t\t\t\ttypeMap.put( typeParameters[i], typeArguments[i] );\n\t\t\t}\n\t\t}\n\t\treturn typeMap;\n\t}\n\n\tprivate static Type getMemberType(Member superMember) {\n\t\tif ( superMember instanceof Field field ) {\n\t\t\treturn field.getGenericType();\n\t\t}\n\t\telse if ( superMember instanceof Method method ) {\n\t\t\treturn method.getGenericReturnType();\n\t\t}\n\t\telse {\n\t\t\tthrow new IllegalArgumentException( \"Unsupported member: \" + superMember );\n\t\t}\n\t}\n\n\tprivate static Type substituteTypeVariables(Type type, Map<TypeVariable<?>, Type> typeMap) {\n\n\t\tif ( type instanceof TypeVariable<?> typeVariable ) {\n\t\t\tfinal var substituted = typeMap.get( typeVariable );\n\t\t\treturn substituted == null\n\t\t\t\t\t? Object.class\n\t\t\t\t\t: substituteTypeVariables( substituted, typeMap );\n\t\t}\n\t\telse if ( type instanceof ParameterizedType parameterizedType ) {\n\t\t\tfinal var args = parameterizedType.getActualTypeArguments();\n\t\t\tfinal var resolved = new Type[args.length];\n\t\t\tfor ( int i = 0; i < args.length; i++ ) {\n\t\t\t\tresolved[i] = substituteTypeVariables( args[i], typeMap );\n\t\t\t}\n\t\t\treturn new SimpleParameterizedType(","sourceCodeStart":63,"sourceCodeEnd":99,"githubUrl":"https://github.com/hibernate/hibernate-orm/blob/fad1729dce015f908198d57a8d80274a30f905a5/hibernate-core/src/main/java/org/hibernate/internal/util/GenericsHelper.java#L63-L99","documentation":"Error \"Unsupported member: \" + superMember\" thrown in hibernate/hibernate-orm.","triggerScenarios":"Thrown at hibernate-core/src/main/java/org/hibernate/internal/util/GenericsHelper.java:81 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Use GenericsHelper only with supported member kinds (fields/methods/types); inspect the declaring class structure."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"fad1729dce015f908198d57a8d80274a30f905a5","analyzedAt":"2026-08-22T04:13:57.527Z","schemaVersion":2},"datasetVersion":"2026-08-22T09:17:25.309Z"}