{"record":{"id":"05b78df9de76b886","repo":"apache/maven","slug":"error-while-initializing-binding","errorCode":null,"errorMessage":"Error while initializing binding {}","messagePattern":"Error while initializing binding (.+?)","errorType":"exception","errorClass":"DIException","httpStatus":null,"severity":"error","filePath":"impl/maven-di/src/main/java/org/apache/maven/di/impl/Binding.java","lineNumber":112,"sourceCode":"    public Binding<T> initializeWith(BindingInitializer<T> bindingInitializer) {\n        return new Binding<T>(\n                this.originalKey,\n                Stream.of(this.dependencies, bindingInitializer.getDependencies())\n                        .flatMap(Set::stream)\n                        .collect(Collectors.toSet()),\n                this.scope,\n                this.priority) {\n            @Override\n            public Supplier<T> compile(Function<Dependency<?>, Supplier<?>> compiler) {\n                final Supplier<T> compiledBinding = Binding.this.compile(compiler);\n                final Consumer<T> consumer = bindingInitializer.compile(compiler);\n                return () -> {\n                    try {\n                        T instance = compiledBinding.get();\n                        consumer.accept(instance);\n                        return instance;\n                    } catch (DIException e) {\n                        throw new DIException(\"Error while initializing binding \" + Binding.this, e);\n                    }\n                };\n            }\n\n            @Override\n            public String toString() {\n                return Binding.this.toString();\n            }\n        };\n    }\n\n    public abstract Supplier<T> compile(Function<Dependency<?>, Supplier<?>> compiler);\n\n    public Set<Dependency<?>> getDependencies() {\n        return dependencies;\n    }\n\n    public Annotation getScope() {","sourceCodeStart":94,"sourceCodeEnd":130,"githubUrl":"https://github.com/apache/maven/blob/e4093d4e120eac99d6bdce5ba67cace2f3085c97/impl/maven-di/src/main/java/org/apache/maven/di/impl/Binding.java#L94-L130","documentation":"Binding.withInitializer pairs a binding with an initializer consumer that runs on each created instance (field/method injection). The compiled supplier wraps creation so that any DIException thrown while constructing or initializing the instance is rethrown as DIException 'Error while initializing binding <binding>', with the original failure as the cause.","triggerScenarios":"Calling getInstance or injectInstance on a type whose binding has an initializer, where construction or the injecting initializer throws a DIException — typically because a dependency of the instance cannot be resolved.","commonSituations":"An injected member whose type or qualifier was never bound; bootstrap order that resolves a type before all its dependencies are registered; initializer logic that triggers nested resolution failures.","solutions":["Unwrap the cause chain (getCause()) — the nested DIException names the dependency that actually failed to resolve","Bind the missing type/qualifier reported by the inner error","Reproduce by requesting the failing dependency directly to confirm the fix"],"exampleFix":"// before: MyService has an unbound injected member\nObject svc = injector.getInstance(MyService.class);\n// DIException: Error while initializing binding MyService\n\n// after: register the missing dependency first\ninjector.bindInstance(Config.class, config);\nObject svc = injector.getInstance(MyService.class);","handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"try {\n    injector.getInstance(MyService.class);\n} catch (DIException e) {\n    Throwable root = e;\n    while (root.getCause() != null) root = root.getCause();\n    // root names the dependency that actually failed; fix that binding\n    log.error(\"DI initialization failed: {}\", root.getMessage(), root);\n}","preventionTips":["Register all injected dependencies before the first getInstance","Add a bootstrap smoke test that eagerly resolves key services to catch missing bindings early"],"tags":["di","binding","initialization","maven"],"backgroundTag":"dependency-injection-failure","analyzedSha":"e4093d4e120eac99d6bdce5ba67cace2f3085c97","analyzedAt":"2026-08-21T22:58:24.034Z","schemaVersion":2},"datasetVersion":"2026-08-21T23:17:16.201Z"}