public Object inject(InjectionContext context) {
if (injectionProvider == null) {
return null;
}
Object injectedValue;
try {
injectedValue = injectionProvider.provideInjection(context);
} catch (InjectionProviderException e) {
Throwable ex = e;
if (ex.getCause() != null) {
ex = ex.getCause();
}
String message =
"InjectionProvider unable to resolve @"
+ injectionAnnotation.annotationType().getSimpleName()
+ " "
+ injectionType.toString();
throw new ConstructionException(message, ex);
}
if (injectedValue == null && !optional) {
String message =
"Non-optional @"
+ injectionAnnotation.annotationType().getSimpleName()
+ " "
+ injectionType.toString()
+ " was null in "
+ injectedClass.getName();
throw new ConstructionException(message);
}
return getInjectedValue(injectedValue);
}
public void bind(Resolution resolution) throws BindingException {
InjectionProviderFactory providerFactory = resolution.application().injectionProviderFactory();
try {
injectionProvider = providerFactory.newInjectionProvider(resolution, this);
if (injectionProvider == null && !optional) {
String message =
"Non-optional @"
+ rawInjectionClass.getName()
+ " was not bound in "
+ injectedClass.getName();
throw new ConstructionException(message);
}
} catch (InvalidInjectionException e) {
throw new BindingException("Could not bind dependency injection", e);
}
}
private Class<?> mapPrimitiveTypes(Class<?> rawInjectionType) {
if (rawInjectionType == null || !rawInjectionType.isPrimitive()) {
return rawInjectionType;
}
for (int i = 0; i < primitiveTypeMapping.length; i += 2) {
if (primitiveTypeMapping[i].equals(rawInjectionType)) {
return primitiveTypeMapping[i + 1];
}
}
return rawInjectionType;
}
private Annotation[][] getConstrucxtorAnnotations(Class fragmentClass, Constructor constructor) {
Annotation[][] parameterAnnotations;
if (fragmentClass.getName().endsWith("_Stub")) {
try {
Class[] constructorParameterTypes = constructor.getParameterTypes();
Class fragmentSuperClass = fragmentClass.getSuperclass();
Constructor realConstructor =
fragmentSuperClass.getDeclaredConstructor(constructorParameterTypes);
parameterAnnotations = realConstructor.getParameterAnnotations();
} catch (NoSuchMethodException e) {
// Shouldn't happen
throw new InternalError(
"Could not get real constructor of class " + fragmentClass.getName());
}
} else {
parameterAnnotations = constructor.getParameterAnnotations();
}
return parameterAnnotations;
}
public ConstructorsModel(Class fragmentClass) {
this.fragmentClass = fragmentClass;
constructorModels = new ArrayList<ConstructorModel>();
Constructor[] realConstructors = this.fragmentClass.getDeclaredConstructors();
Class injectionClass =
fragmentClass.getName().endsWith("_Stub")
? fragmentClass.getSuperclass()
: this.fragmentClass;
for (int i = 0; i < realConstructors.length; i++) {
Constructor constructor = realConstructors[i];
try {
Constructor injectionConstructor =
injectionClass.getConstructor(constructor.getParameterTypes());
ConstructorModel constructorModel =
newConstructorModel(this.fragmentClass, constructor, injectionConstructor);
if (constructorModel != null) {
constructorModels.add(constructorModel);
}
} catch (NoSuchMethodException e) {
// Ignore and continue
}
}
}
private Object getInjectedValue(Object injectionResult) {
if (injectionResult == null) {
return null;
}
if (injectionResult instanceof Iterable) {
if (Iterable.class.isAssignableFrom(rawInjectionClass)
|| rawInjectionClass.isInstance(injectionResult)) {
return injectionResult;
} else {
return firstElementOrNull((Iterable) injectionResult);
}
} else {
if (Iterable.class.equals(injectionType)) {
return Collections.singleton(injectionResult);
}
}
return injectionResult;
}
public void bind(Resolution resolution) throws BindingException {
boundConstructors = new ArrayList<ConstructorModel>();
for (ConstructorModel constructorModel : constructorModels) {
try {
constructorModel.bind(resolution);
boundConstructors.add(constructorModel);
} catch (Exception e) {
// Ignore
e.printStackTrace();
}
}
if (boundConstructors.size() == 0) {
StringBuilder messageBuilder =
new StringBuilder("Found no constructor that could be bound: ");
if (resolution.object() instanceof AbstractCompositeDescriptor) {
messageBuilder
.append(fragmentClass.getName())
.append(" in ")
.append(resolution.object().toString());
} else {
messageBuilder.append(resolution.object().toString());
}
if (messageBuilder.indexOf("$") >= 0) {
messageBuilder.append("\nNon-static inner classes can not be used.");
}
String message = messageBuilder.toString();
throw new BindingException(message);
}
// Sort based on parameter count
Collections.sort(
boundConstructors,
new Comparator<ConstructorModel>() {
public int compare(ConstructorModel o1, ConstructorModel o2) {
Integer model2ParametersCount = o2.constructor().getParameterTypes().length;
int model1ParametersCount = o1.constructor().getParameterTypes().length;
return model2ParametersCount.compareTo(model1ParametersCount);
}
});
}
@Override
public String toString() {
return injectionAnnotation + " for " + injectionType + " in " + injectedClass.getName();
}
public boolean hasScope(final Class<? extends Annotation> scope) {
return scope == null || scope.equals(injectionAnnotation().annotationType());
}
