/**
* Creates new field descriptor and resolve all additional field data. Also, forces access to a
* field.
*/
public FieldDescriptor(ClassDescriptor classDescriptor, Field field) {
super(classDescriptor, ReflectUtil.isPublic(field));
this.field = field;
this.type = field.getGenericType();
this.rawType = ReflectUtil.getRawType(type, classDescriptor.getType());
this.rawComponentType = ReflectUtil.getComponentType(type, classDescriptor.getType());
this.rawKeyComponentType = ReflectUtil.getComponentType(type, classDescriptor.getType(), 0);
ReflectUtil.forceAccess(field);
}
protected ActionRequest createActionRequest(String actionPath) {
HttpServletRequest servletRequest = mock(HttpServletRequest.class);
HttpServletResponse servletResponse = mock(HttpServletResponse.class);
HttpSession httpSession = mock(HttpSession.class);
ServletContext servletContext = mock(ServletContext.class);
when(servletRequest.getSession()).thenReturn(httpSession);
when(httpSession.getServletContext()).thenReturn(servletContext);
MadvocController madvocController = new MadvocController();
Object action = new Object();
ActionInfo actionInfo =
new ActionInfo(
Action.class,
ReflectUtil.findMethod(Action.class, "view"),
null,
null,
new ActionDef(actionPath, "GET"),
null,
false,
null,
null);
return new ActionRequest(
madvocController,
actionInfo.getActionPath(),
actionInfo,
action,
servletRequest,
servletResponse);
}
@Override
public MethodAction createActionIfPossible(String actionName) {
// will resolve if both a class and method name can be parsed, and a valid class with that
// method name can be loaded
String methodName = MethodAction.methodNameForAction(actionName);
String className = MethodAction.classNameForAction(actionName);
if (StringUtils.isEmpty(methodName) || StringUtils.isEmpty(className)) {
return null;
}
try {
Class<?> clazz = Class.forName(className); // TODO - Restricted in GAE - why is this better?
// ClassLoaderUtil.loadClass(className);
Method method = ReflectUtil.findMethod(clazz, methodName);
if (method == null) {
return null;
}
MethodAction methodAction = new MethodAction(clazz, method, findInterceptors(method));
// force instantiation of controller - this allows controllers to be injected into eachother
// and also flushes out instantiation issues at startup
Object controller = createController(methodAction);
controllerInstances.put(methodAction.type(), controller);
return methodAction;
} catch (BaseException e) {
throw e;
} catch (Exception e) {
return null;
}
}
/**
* Creates new instance for current property name through its setter. It uses default constructor!
*/
protected Object createBeanProperty(BeanProperty bp) {
MethodDescriptor setter = bp.cd.getBeanSetterMethodDescriptor(bp.name, true);
FieldDescriptor field = null;
Class type;
if (setter != null) {
type = setter.getRawParameterTypes()[0];
} else {
field = getField(bp, true);
if (field == null) {
return null;
}
type = field.getRawType();
}
Object newInstance;
try {
newInstance = ReflectUtil.newInstance(type);
} catch (Exception ex) {
throw new BeanException("Unable to create property: " + bp.name, bp, ex);
}
if (setter != null) {
invokeSetter(bp.bean, setter, newInstance);
} else {
setFieldValue(bp.bean, field, newInstance);
}
return newInstance;
}
/**
* Adds the content pointed by the URL to the classpath during runtime. Uses reflection since
* <code>addURL</code> method of <code>URLClassLoader</code> is protected.
*/
public static void addUrlToClassPath(URL url, ClassLoader classLoader) {
try {
ReflectUtil.invokeDeclared(
URLClassLoader.class, classLoader, "addURL", new Class[] {URL.class}, new Object[] {url});
} catch (Exception ex) {
throw new IllegalArgumentException("Add URL failed: " + url, ex);
}
}
/**
* Returns default class loader. By default, it is {@link #getContextClassLoader() threads context
* class loader}. If this one is <code>null</code>, then class loader of the <b>caller class</b>
* is returned.
*/
public static ClassLoader getDefaultClassLoader() {
ClassLoader cl = getContextClassLoader();
if (cl == null) {
Class callerClass = ReflectUtil.getCallerClass(2);
cl = callerClass.getClassLoader();
}
return cl;
}
@Test
public void testPrimitivesArrays1() throws NoSuchMethodException {
Method m = ReflectUtil.findDeclaredMethod(Foo.class, "primarr1");
MethodParameter[] mps = Paramo.resolveParameters(m);
String[] s = resolveParameterNames(mps);
assertEquals(2, s.length);
assertEquals("one", s[0]);
assertEquals("two", s[1]);
}
@Test
public void testGeneric() {
Method m = ReflectUtil.findDeclaredMethod(Generic.class, "one");
MethodParameter[] mps = Paramo.resolveParameters(m);
assertEquals(2, mps.length);
assertEquals("foo", mps[0].getName());
assertEquals("Ljava/util/Map<Ljava/lang/String;Ljava/lang/Long;>;", mps[0].getSignature());
assertEquals("aLong", mps[1].getName());
assertEquals("Ljava/lang/Long;", mps[1].getSignature());
m = ReflectUtil.findDeclaredMethod(Generic.class, "two");
mps = Paramo.resolveParameters(m);
assertEquals(1, mps.length);
assertEquals("zzz", mps[0].getName());
assertEquals(
"Ljava/util/Map<Ljava/lang/String;Ljodd/paramo/data/Bar<Ljava/lang/Long;>;>;",
mps[0].getSignature());
}
public ClassDescriptor(
Class type,
boolean scanAccessible,
boolean extendedProperties,
boolean includeFieldsAsProperties,
String propertyFieldPrefix) {
this.type = type;
this.scanAccessible = scanAccessible;
this.extendedProperties = extendedProperties;
this.includeFieldsAsProperties = includeFieldsAsProperties;
this.propertyFieldPrefix = propertyFieldPrefix;
isArray = type.isArray();
isMap = ReflectUtil.isSubclass(type, Map.class);
isList = ReflectUtil.isSubclass(type, List.class);
isSet = ReflectUtil.isSubclass(type, Set.class);
isCollection = ReflectUtil.isSubclass(type, Collection.class);
}
@Test
public void testPrimitivesArrays3() throws NoSuchMethodException {
Method m = ReflectUtil.findDeclaredMethod(Foo.class, "primarrShortByte");
MethodParameter[] mps = Paramo.resolveParameters(m);
String[] s = resolveParameterNames(mps);
assertEquals(3, s.length);
assertEquals("s", s[0]);
assertEquals("y", s[1]);
assertEquals("somethingElse", s[2]);
}
@Test
public void testNonGeneric() {
Method m = ReflectUtil.findDeclaredMethod(NonGeneric.class, "one");
MethodParameter[] mps = Paramo.resolveParameters(m);
assertEquals(2, mps.length);
assertEquals("foo", mps[0].getName());
assertEquals("Ljava/util/Map;", mps[0].getSignature());
assertEquals("aLong", mps[1].getName());
assertEquals("Ljava/lang/Long;", mps[1].getSignature());
}
@Test
public void testPrimitivesArrays2() throws NoSuchMethodException {
Method m = ReflectUtil.findDeclaredMethod(Foo.class, "primarr2");
MethodParameter[] mps = Paramo.resolveParameters(m);
String[] s = resolveParameterNames(mps);
assertEquals(6, s.length);
assertEquals("i", s[0]);
assertEquals("l", s[1]);
assertEquals("f", s[2]);
assertEquals("d", s[3]);
assertEquals("b", s[4]);
assertEquals("c", s[5]);
}
/**
* Loads a class with a given name dynamically, more reliable then <code>Class.forName</code>.
*
* <p>Class will be loaded using class loaders in the following order:
*
* <ul>
* <li>provided class loader (if any)
* <li><code>Thread.currentThread().getContextClassLoader()}</code>
* <li>caller classloader
* <li>using <code>Class.forName</code>
* </ul>
*/
public static Class loadClass(String className, ClassLoader classLoader)
throws ClassNotFoundException {
className = prepareClassnameForLoading(className);
if ((className.indexOf('.') == -1) || (className.indexOf('[') == -1)) {
// maybe a primitive
int primitiveNdx = getPrimitiveClassNameIndex(className);
if (primitiveNdx >= 0) {
return PRIMITIVE_TYPES[primitiveNdx];
}
}
// try #1 - using provided class loader
try {
if (classLoader != null) {
return classLoader.loadClass(className);
}
} catch (ClassNotFoundException ignore) {
}
// try #2 - using thread class loader
ClassLoader currentThreadClassLoader = Thread.currentThread().getContextClassLoader();
if ((currentThreadClassLoader != null) && (currentThreadClassLoader != classLoader)) {
try {
return currentThreadClassLoader.loadClass(className);
} catch (ClassNotFoundException ignore) {
}
}
// try #3 - using caller classloader, similar as Class.forName()
Class callerClass = ReflectUtil.getCallerClass(2);
ClassLoader callerClassLoader = callerClass.getClassLoader();
if ((callerClassLoader != classLoader) && (callerClassLoader != currentThreadClassLoader)) {
try {
return callerClassLoader.loadClass(className);
} catch (ClassNotFoundException ignore) {
}
}
// try #4 - using Class.forName(). We must use this since for JDK >= 6
// arrays will be not loaded using classloader, but only with forName.
try {
return Class.forName(className);
} catch (ClassNotFoundException ignore) {
}
throw new ClassNotFoundException("Class not found: " + className);
}
/**
* Finds and loads class on classpath even if it was already loaded.
*
* @param className class name to find
* @param classPath classpath
* @param parent optional parent class loader, may be <code>null</code>
*/
public static Class findClass(String className, URL[] classPath, ClassLoader parent) {
URLClassLoader tempClassLoader =
parent != null ? new URLClassLoader(classPath, parent) : new URLClassLoader(classPath);
try {
return (Class)
ReflectUtil.invokeDeclared(
URLClassLoader.class,
tempClassLoader,
"findClass",
new Class[] {String.class},
new Object[] {className});
} catch (Throwable th) {
throw new RuntimeException("Class not found: " + className, th);
}
}
/**
* Defines a class from byte array into the specified class loader. Warning: this is a
* <b>hack</b>!
*
* @param className optional class name, may be <code>null</code>
* @param classData bytecode data
* @param classLoader classloader that will load class
*/
public static Class defineClass(String className, byte[] classData, ClassLoader classLoader) {
try {
return (Class)
ReflectUtil.invokeDeclared(
ClassLoader.class,
classLoader,
"defineClass",
new Class[] {String.class, byte[].class, int.class, int.class},
new Object[] {
className, classData, Integer.valueOf(0), Integer.valueOf(classData.length)
});
} catch (Throwable th) {
throw new RuntimeException("Define class failed: " + className, th);
}
}
/**
* Returns the element of an array forced. If value is <code>null</code>, it will be instantiated.
* If not the last part of indexed bean property, array will be expanded to the index if
* necessary.
*/
protected Object arrayForcedGet(BeanProperty bp, Object array, int index) {
Class componentType = array.getClass().getComponentType();
if (bp.last == false) {
array = ensureArraySize(bp, array, componentType, index);
}
Object value = Array.get(array, index);
if (value == null) {
try {
value = ReflectUtil.newInstance(componentType);
} catch (Exception ex) {
throw new BeanException(
"Unable to create array element: " + bp.name + '[' + index + ']', bp, ex);
}
Array.set(array, index, value);
}
return value;
}
/**
* Retrieves given resource as URL. Resource is always absolute and may starts with a slash
* character.
*
* <p>Resource will be loaded using class loaders in the following order:
*
* <ul>
* <li>{@link Thread#getContextClassLoader() Thread.currentThread().getContextClassLoader()}
* <li>{@link Class#getClassLoader() ClassLoaderUtil.class.getClassLoader()}
* <li>if <code>callingClass</code> is provided: {@link Class#getClassLoader()
* callingClass.getClassLoader()}
* </ul>
*/
public static URL getResourceUrl(String resourceName, ClassLoader classLoader) {
if (resourceName.startsWith("/")) {
resourceName = resourceName.substring(1);
}
URL resourceUrl;
// try #1 - using provided class loader
if (classLoader != null) {
resourceUrl = classLoader.getResource(resourceName);
if (resourceUrl != null) {
return resourceUrl;
}
}
// try #2 - using thread class loader
ClassLoader currentThreadClassLoader = Thread.currentThread().getContextClassLoader();
if ((currentThreadClassLoader != null) && (currentThreadClassLoader != classLoader)) {
resourceUrl = currentThreadClassLoader.getResource(resourceName);
if (resourceUrl != null) {
return resourceUrl;
}
}
// try #3 - using caller classloader, similar as Class.forName()
Class callerClass = ReflectUtil.getCallerClass(2);
ClassLoader callerClassLoader = callerClass.getClassLoader();
if ((callerClassLoader != classLoader) && (callerClassLoader != currentThreadClassLoader)) {
resourceUrl = callerClassLoader.getResource(resourceName);
if (resourceUrl != null) {
return resourceUrl;
}
}
return null;
}
/** Resolves raw component type for given index. This value is NOT cached. */
public Class resolveRawComponentType(int index) {
return ReflectUtil.getComponentType(type, classDescriptor.getType(), index);
}
