/**
* Adapts the source object to a view object.
*
* @param mapper An action that is invoked for each source object in the graph that is to be
* adapted. The action can influence how the source object is adapted via the provided {@link
* SourceObjectMapping}.
*/
public <T, S> T adapt(
Class<T> targetType, S sourceObject, Action<? super SourceObjectMapping> mapper) {
if (sourceObject == null) {
return null;
}
Class<? extends T> wrapperType = targetTypeProvider.getTargetType(targetType, sourceObject);
DefaultSourceObjectMapping mapping =
new DefaultSourceObjectMapping(sourceObject, targetType, wrapperType);
mapper.execute(mapping);
wrapperType = mapping.wrapperType.asSubclass(targetType);
if (wrapperType.isInstance(sourceObject)) {
return wrapperType.cast(sourceObject);
}
if (targetType.isEnum()) {
return adaptToEnum(targetType, sourceObject);
}
MixInMethodInvoker mixInMethodInvoker = null;
if (mapping.mixInType != null) {
mixInMethodInvoker =
new MixInMethodInvoker(
mapping.mixInType, new AdaptingMethodInvoker(mapper, new ReflectionMethodInvoker()));
}
MethodInvoker overrideInvoker = chainInvokers(mixInMethodInvoker, mapping.overrideInvoker);
Object proxy =
Proxy.newProxyInstance(
wrapperType.getClassLoader(),
new Class<?>[] {wrapperType},
new InvocationHandlerImpl(sourceObject, overrideInvoker, mapper));
if (mixInMethodInvoker != null) {
mixInMethodInvoker.setProxy(proxy);
}
return wrapperType.cast(proxy);
}
public void apply()
throws IllegalAccessException, InvocationTargetException, InstantiationException {
if (type.isEnum()) {
for (T instance : type.getEnumConstants()) {
assertThat(
instance.toString(),
is(
type.getCanonicalName().substring(type.getPackage().getName().length() + 1)
+ "."
+ ((Enum<?>) instance).name()));
}
return;
}
for (Constructor<?> constructor : type.getDeclaredConstructors()) {
if (constructor.isSynthetic() && skipSynthetic) {
continue;
}
constructor.setAccessible(true);
Class<?>[] parameterTypes = constructor.getParameterTypes();
Object[] actualArguments = new Object[parameterTypes.length];
Object[] otherArguments = new Object[parameterTypes.length];
int index = 0;
for (Class<?> parameterType : parameterTypes) {
putInstance(parameterType, actualArguments, otherArguments, index++);
}
int testIndex = 0;
@SuppressWarnings("unchecked")
T instance = (T) constructor.newInstance(actualArguments);
assertThat(instance, is(instance));
assertThat(instance, not(is((Object) null)));
assertThat(instance, not(is(new Object())));
Object similarInstance = constructor.newInstance(actualArguments);
assertThat(instance.hashCode(), is(similarInstance.hashCode()));
assertThat(instance, is(similarInstance));
if (skipToString) {
assertThat(instance.toString(), notNullValue());
} else if (optionalToStringRegex == null) {
checkString(instance);
} else {
assertThat(instance.toString(), new RegexMatcher(optionalToStringRegex));
}
for (Object otherArgument : otherArguments) {
Object[] compareArguments = new Object[actualArguments.length];
int argumentIndex = 0;
for (Object actualArgument : actualArguments) {
if (argumentIndex == testIndex) {
compareArguments[argumentIndex] = otherArgument;
} else {
compareArguments[argumentIndex] = actualArgument;
}
argumentIndex++;
}
Object unlikeInstance = constructor.newInstance(compareArguments);
assertThat(instance.hashCode(), not(is(unlikeInstance)));
assertThat(instance, not(is(unlikeInstance)));
testIndex++;
}
}
}
private void putInstance(
Class<?> parameterType, Object actualArguments, Object otherArguments, int index) {
Object actualArgument, otherArgument;
if (parameterType == boolean.class) {
actualArgument = DEFAULT_BOOLEAN;
otherArgument = OTHER_BOOLEAN;
} else if (parameterType == byte.class) {
actualArgument = DEFAULT_BYTE;
otherArgument = OTHER_BYTE;
} else if (parameterType == char.class) {
actualArgument = DEFAULT_CHAR;
otherArgument = OTHER_CHAR;
} else if (parameterType == short.class) {
actualArgument = DEFAULT_SHORT;
otherArgument = OTHER_SHORT;
} else if (parameterType == int.class) {
actualArgument = DEFAULT_INT;
otherArgument = OTHER_INT;
} else if (parameterType == long.class) {
actualArgument = DEFAULT_LONG;
otherArgument = OTHER_LONG;
} else if (parameterType == float.class) {
actualArgument = DEFAULT_FLOAT;
otherArgument = OTHER_FLOAT;
} else if (parameterType == double.class) {
actualArgument = DEFAULT_DOUBLE;
otherArgument = OTHER_DOUBLE;
} else if (parameterType.isEnum()) {
Object[] enumConstants = parameterType.getEnumConstants();
if (enumConstants.length == 1) {
throw new IllegalArgumentException("Enum with only one constant: " + parameterType);
}
actualArgument = enumConstants[0];
otherArgument = enumConstants[1];
} else if (parameterType.isArray()) {
actualArgument = Array.newInstance(parameterType.getComponentType(), 1);
otherArgument = Array.newInstance(parameterType.getComponentType(), 1);
putInstance(parameterType.getComponentType(), actualArgument, otherArgument, 0);
} else {
actualArgument = creator.replace(parameterType, generator, false);
refinement.apply(actualArgument);
otherArgument = creator.replace(parameterType, generator, true);
refinement.apply(otherArgument);
}
Array.set(actualArguments, index, actualArgument);
Array.set(otherArguments, index, otherArgument);
}
/**
* @return Null if class might be a bean; type String (that identifies why it's not a bean) if not
*/
public static String canBeABeanType(Class<?> type) {
// First: language constructs that ain't beans:
if (type.isAnnotation()) {
return "annotation";
}
if (type.isArray()) {
return "array";
}
if (type.isEnum()) {
return "enum";
}
if (type.isPrimitive()) {
return "primitive";
}
// Anything else? Seems valid, then
return null;
}
public JSONObject describeClass(Class<?> clazz) throws Exception {
JSONObject desc = new JSONObject();
desc.put("name", clazz.getName());
if (clazz.isEnum()) {
@SuppressWarnings("unchecked")
Class<Enum<?>> enumClass = (Class<Enum<?>>) clazz;
ArrayList<String> enumNames = Lists.newArrayList();
for (Enum<?> e : enumClass.getEnumConstants()) {
enumNames.add(e.name());
}
desc.put("enum", enumNames);
}
UI_TYPE ui_type = UI_TYPE.getEnumFor(clazz);
if (ui_type != null) {
desc.put("uiType", ui_type.getName());
}
desc.put("properties", getClassProperties(clazz, 0));
return desc;
}
@SuppressWarnings("unchecked")
private static <T> T createFinalArgumentPlaceholder(Class<T> clazz) {
if (clazz == Boolean.TYPE || clazz == Boolean.class) return (T) Boolean.FALSE;
if (clazz.isEnum()) return (T) EnumSet.allOf((Class<? extends Enum>) clazz).iterator().next();
return (T) createArgumentPlaceholder(clazz, FINAL_PLACEHOLDER_SEED);
}
@SuppressWarnings("unchecked")
Object getNextPlaceholder(Class<?> clazz) {
return clazz.isEnum()
? getNextEnumPlaceholder((Class<? extends Enum>) clazz)
: getNextBooleanPlaceholder();
}
private static boolean isLimitedValues(Class<?> clazz) {
return clazz == Boolean.TYPE || clazz == Boolean.class || clazz.isEnum();
}