/**
* Set the object to be edited.
*
* @param value The object to be edited.
*/
public void setObject(Object value) {
if (!(_type.isInstance(value))) {
throw new IllegalArgumentException(value.getClass() + " is not of type " + _type);
}
_value = value;
// Disable event generation.
_squelchChangeEvents = true;
// Iterate over each property, doing a lookup on the associated editor
// and setting the editor's value to the value of the property.
Iterator it = _prop2Editor.keySet().iterator();
while (it.hasNext()) {
PropertyDescriptor desc = (PropertyDescriptor) it.next();
PropertyEditor editor = (PropertyEditor) _prop2Editor.get(desc);
Method reader = desc.getReadMethod();
if (reader != null) {
try {
Object val = reader.invoke(_value, null);
editor.setValue(val);
} catch (IllegalAccessException ex) {
ex.printStackTrace();
} catch (InvocationTargetException ex) {
ex.getTargetException().printStackTrace();
}
}
}
// Enable event generation.
_squelchChangeEvents = false;
}
/** evaluate the link function */
public static Data link(VMethod m, Object[] o) throws VisADException {
Data ans = null;
if (o != null) {
for (int i = 0; i < o.length; i++) {
// convert VRealTypes to RealTypes
if (o[i] instanceof VRealType) {
o[i] = ((VRealType) o[i]).getRealType();
}
}
}
try {
ans = (Data) FormulaUtil.invokeMethod(m.getMethod(), o);
} catch (ClassCastException exc) {
if (FormulaVar.DEBUG) exc.printStackTrace();
throw new VisADException("Link error: invalid linked method");
} catch (IllegalAccessException exc) {
if (FormulaVar.DEBUG) exc.printStackTrace();
throw new VisADException("Link error: cannot access linked method");
} catch (IllegalArgumentException exc) {
if (FormulaVar.DEBUG) exc.printStackTrace();
throw new VisADException("Link error: bad method argument");
} catch (InvocationTargetException exc) {
if (FormulaVar.DEBUG) exc.getTargetException().printStackTrace();
throw new VisADException("Link error: linked method threw an exception");
}
if (ans == null) {
throw new VisADException("Link error: linked method returned null data");
}
return ans;
}
private void bindDataSource(
Component componentRoot, Object controller, Method method, UiDataSource dataSource) {
String componentId = dataSource.value();
Component component = Clara.findComponentById(componentRoot, componentId);
Class<?> dataSourceClass = method.getReturnType();
try {
// Vaadin data model consists of Property/Item/Container
// objects and each of them have a Viewer interface.
if (isContainer(dataSourceClass) && component instanceof Container.Viewer) {
((Container.Viewer) component)
.setContainerDataSource((Container) method.invoke(controller));
} else if (isProperty(dataSourceClass) && component instanceof Property.Viewer) {
((Property.Viewer) component).setPropertyDataSource((Property) method.invoke(controller));
} else if (isItem(dataSourceClass) && component instanceof Item.Viewer) {
((Item.Viewer) component).setItemDataSource((Item) method.invoke(controller));
}
// TODO exception handling
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
public static final void fireEvent(GenericEvent e, Method m, Vector listeners)
throws PropertyVetoException {
Object[] snapshot = null;
synchronized (listeners) {
snapshot = new Object[listeners.size()];
listeners.copyInto(snapshot);
}
// leighd 04/14/99 - modified for event debugging
if (gDebugEvents) Engine.debugLog("Event : " + e.toString());
Object params[] = new Object[] {e};
for (int i = 0; i < snapshot.length; i++) {
if ((e instanceof Consumable) && ((Consumable) e).isConsumed()) {
// leighd 04/14/99
// note that we don't catch the consumption of the
// event until we've passed through the loop again,
// so we reference i-1
if (gDebugEvents) Engine.debugLog("Consumed By : " + snapshot[i - 1]);
return;
}
try {
m.invoke(snapshot[i], params);
} catch (IllegalAccessException iae) {
iae.printStackTrace();
} catch (InvocationTargetException ite) {
Throwable t = ite.getTargetException();
if (t instanceof PropertyVetoException) throw ((PropertyVetoException) t);
else t.printStackTrace();
}
}
}
/**
* Insert the source code details, if available.
*
* @param ped The given program element.
*/
public void addSourcePosition(ProgramElementDoc ped, int indent) {
if (!addSrcInfo) return;
if (JDiff.javaVersion.startsWith("1.1")
|| JDiff.javaVersion.startsWith("1.2")
|| JDiff.javaVersion.startsWith("1.3")) {
return; // position() only appeared in J2SE1.4
}
try {
// Could cache the method for improved performance
Class c = ProgramElementDoc.class;
Method m = c.getMethod("position", null);
Object sp = m.invoke(ped, null);
if (sp != null) {
for (int i = 0; i < indent; i++) outputFile.print(" ");
outputFile.println("src=\"" + sp + "\"");
}
} catch (NoSuchMethodException e2) {
System.err.println("Error: method \"position\" not found");
e2.printStackTrace();
} catch (IllegalAccessException e4) {
System.err.println("Error: class not permitted to be instantiated");
e4.printStackTrace();
} catch (InvocationTargetException e5) {
System.err.println("Error: method \"position\" could not be invoked");
e5.printStackTrace();
} catch (Exception e6) {
System.err.println("Error: ");
e6.printStackTrace();
}
}
private void bindEventHandler(
Component componentRoot, Object controller, Method method, UiHandler eventListener) {
String componentId = eventListener.value();
Component component = Clara.findComponentById(componentRoot, componentId);
if (component == null) {
throw new BinderException("No component found for id: " + componentId + ".");
}
Class<?> eventType =
(method.getParameterTypes().length > 0 ? method.getParameterTypes()[0] : null);
if (eventType == null) {
throw new BinderException("Couldn't figure out event type for method " + method + ".");
}
Method addListenerMethod = getAddListenerMethod(component.getClass(), eventType);
if (addListenerMethod != null) {
try {
Object listener =
createListenerProxy(
addListenerMethod.getParameterTypes()[0], eventType, method, controller);
addListenerMethod.invoke(component, listener);
// TODO exception handling
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
}
/**
* Creates a new entity enumeration icon chooser.
*
* @param enumeration the enumeration to display in this combo box
*/
public EnumerationIconChooser(Class<E> enumeration) {
super();
this.enumeration = enumeration;
try {
this.icons = (ImageIcon[]) enumeration.getMethod("getIcons").invoke(null);
for (int i = 0; i < icons.length; i++) {
addItem(icons[i]);
}
} catch (NoSuchMethodException ex) {
System.err.println(
"The method 'getIcons()' is missing in enumeration " + enumeration.getName());
ex.printStackTrace();
System.exit(1);
} catch (IllegalAccessException ex) {
System.err.println(
"Cannot access method 'getIcons()' in enumeration "
+ enumeration.getName()
+ ": ex.getMessage()");
ex.printStackTrace();
System.exit(1);
} catch (InvocationTargetException ex) {
ex.getCause().printStackTrace();
System.exit(1);
}
}
public Matrix createVector(BitVector selector) {
int rows = selector != null ? selector.countOnBits() : frame.size();
Matrix m = new Matrix(rows, 1);
for (int i = 0, j = 0; j < frame.size(); j++) {
if (selector == null || selector.isOn(j)) {
M rowValue = frame.object(j);
try {
Number numValue = (Number) numericField.get(rowValue);
m.set(i, 0, numValue.doubleValue());
} catch (IllegalAccessException e) {
e.printStackTrace();
throw new IllegalStateException(
String.format(
"Couldn't access field %s: %s", numericField.getName(), e.getMessage()));
}
i++;
}
}
return m;
}
public void createDataset(Dataset dataset) {
try {
MongoProvider provider = new MongoProvider("localhost", 10000, "test", null, null);
dsDao = new DatasetDao();
orgDao = new OrganizationDao();
org = new Organization();
org.setOrganizationId("orgId");
ArrayList<Dataset> datasets = new ArrayList<>();
datasets.add(dataset);
org.setDatasets(datasets);
org.setOrganizationUri("testUri");
org.setHarvestingMetadata(new HarvestingMetadata());
Field field;
try {
field = DatasetDao.class.getDeclaredField("provider");
field.setAccessible(true);
field.set(dsDao, provider);
field = OrganizationDao.class.getDeclaredField("provider");
field.setAccessible(true);
field.set(orgDao, provider);
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (SecurityException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
dsDao.createDatasetForOrganization(org, dataset);
orgDao.create(org);
System.out.println(
"Dataset: "
+ dsDao.getByName(dataset.getName()).getName()
+ " is saved in a virtual MongoDB");
try {
List<Dataset> allDatasetsByOrganization = orgDao.getAllDatasetsByOrganization("orgId");
System.out.println("Datasets:");
for (Dataset ds : allDatasetsByOrganization) {
System.out.println(ds.getName());
}
} catch (NoOrganizationExceptionFound e) {
e.printStackTrace();
}
} catch (UnknownHostException e) {
e.printStackTrace();
}
}
/** 直接设置对象属性值, 无视private/protected修饰符, 不经过setter函数. */
public static void setFieldValue(final Object obj, final String fieldName, final Object value) {
Field field = getAccessibleField(obj, fieldName);
if (field == null) {
throw new IllegalArgumentException(
"Could not find field [" + fieldName + "] on target [" + obj + "]");
}
try {
field.set(obj, value);
} catch (IllegalAccessException e) {
logger.error("不可能抛出的异常:{}", e.getMessage());
}
}
/**
* Examines a property's type to see which method should be used to parse the property's value.
*
* @param desc The description of the property
* @param element The XML element containing the property value
* @return The value stored in the element
* @throws IOException If there is an error reading the document
*/
public Object getObjectValue(PropertyDescriptor desc, Element element) throws IOException {
// Find out what kind of property it is
Class type = desc.getPropertyType();
// If it's an array, get the base type
if (type.isArray()) {
type = type.getComponentType();
}
// For native types, object wrappers for natives, and strings, use the
// basic parse routine
if (type.equals(Integer.TYPE)
|| type.equals(Long.TYPE)
|| type.equals(Short.TYPE)
|| type.equals(Byte.TYPE)
|| type.equals(Boolean.TYPE)
|| type.equals(Float.TYPE)
|| type.equals(Double.TYPE)
|| Integer.class.isAssignableFrom(type)
|| Long.class.isAssignableFrom(type)
|| Short.class.isAssignableFrom(type)
|| Byte.class.isAssignableFrom(type)
|| Boolean.class.isAssignableFrom(type)
|| Float.class.isAssignableFrom(type)
|| Double.class.isAssignableFrom(type)
|| String.class.isAssignableFrom(type)) {
return readBasicType(type, element);
} else if (java.util.Date.class.isAssignableFrom(type)) {
// If it's a date, use the date parser
return readDate(element);
} else {
try {
// If it's an object, create a new instance of the object (it should
// be a bean, or there will be trouble)
Object newOb = type.newInstance();
// Copy the XML element into the bean
readObject(newOb, element);
return newOb;
} catch (InstantiationException exc) {
throw new IOException(
"Error creating object for " + desc.getName() + ": " + exc.toString());
} catch (IllegalAccessException exc) {
throw new IOException(
"Error creating object for " + desc.getName() + ": " + exc.toString());
}
}
}
/**
* Try to execute given method on given object. Handles invocation target exceptions. XXX nearly
* duplicates tryMethod in JGEngine.
*
* @return null means method does not exist or returned null/void
*/
static Object tryMethod(Object o, String name, Object[] args) {
try {
Method met = JREEngine.getMethod(o.getClass(), name, args);
if (met == null) return null;
return met.invoke(o, args);
} catch (InvocationTargetException ex) {
Throwable ex_t = ex.getTargetException();
ex_t.printStackTrace();
return null;
} catch (IllegalAccessException ex) {
System.err.println("Unexpected exception:");
ex.printStackTrace();
return null;
}
}
/** 直接读取对象属性值, 无视private/protected修饰符, 不经过getter函数. */
public static Object getFieldValue(final Object obj, final String fieldName) {
Field field = getAccessibleField(obj, fieldName);
if (field == null) {
throw new IllegalArgumentException(
"Could not find field [" + fieldName + "] on target [" + obj + "]");
}
Object result = null;
try {
result = field.get(obj);
} catch (IllegalAccessException e) {
logger.error("不可能抛出的异常{}", e.getMessage());
}
return result;
}
private void bindField(
Component componentRoot, Object controller, Field field, UiField annotation) {
String componentId = annotation.value();
Component component = Clara.findComponentById(componentRoot, componentId);
if (component == null) {
throw new BinderException("No component found for id: " + componentId + ".");
}
try {
field.setAccessible(true);
field.set(controller, component);
// TODO exception handling
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
// Lookup the value corresponding to a key found in catalog.getKeys().
// Here we assume that the catalog returns a non-inherited value for
// these keys. FIXME: Not true. Better see whether handleGetObject is
// public - it is in ListResourceBundle and PropertyResourceBundle.
private Object lookup(String key) {
Object value = null;
if (lookupMethod != null) {
try {
value = lookupMethod.invoke(catalog, new Object[] {key});
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.getTargetException().printStackTrace();
}
} else {
try {
value = catalog.getObject(key);
} catch (MissingResourceException e) {
}
}
return value;
}
public void propertyChange(PropertyChangeEvent e) {
if (_squelchChangeEvents) return;
PropertyEditor editor = (PropertyEditor) e.getSource();
PropertyDescriptor prop = (PropertyDescriptor) _editor2Prop.get(editor);
Method writer = prop.getWriteMethod();
if (writer != null) {
try {
Object[] params = {editor.getValue()};
writer.invoke(_value, params);
setObject(_value);
firePropertyChange(_value, prop.getName(), null, editor.getValue());
} catch (IllegalAccessException ex) {
ex.printStackTrace();
} catch (InvocationTargetException ex) {
ex.getTargetException().printStackTrace();
}
}
}
public Matrix createVector() {
int rows = frame.size();
Matrix m = new Matrix(rows, 1);
for (int i = 0; i < rows; i++) {
M rowValue = frame.object(i);
try {
Number numValue = (Number) numericField.get(rowValue);
m.set(i, 0, numValue.doubleValue());
} catch (IllegalAccessException e) {
e.printStackTrace();
throw new IllegalStateException(
String.format("Couldn't access field %s: %s", numericField.getName(), e.getMessage()));
}
}
return m;
}
protected synchronized Message receiveMessage() throws IOException {
if (messageBuffer.size() > 0) {
Message m = (Message) messageBuffer.get(0);
messageBuffer.remove(0);
return m;
}
try {
InetSocketAddress remoteAddress = (InetSocketAddress) channel.receive(receiveBuffer);
if (remoteAddress != null) {
int len = receiveBuffer.position();
receiveBuffer.rewind();
receiveBuffer.get(buf, 0, len);
try {
IP address = IP.fromInetAddress(remoteAddress.getAddress());
int port = remoteAddress.getPort();
extractor.appendData(buf, 0, len, new SocketDescriptor(address, port));
receiveBuffer.clear();
extractor.updateAvailableMessages();
return extractor.nextMessage();
} catch (EOFException exc) {
exc.printStackTrace();
System.err.println(buf.length + ", " + len);
} catch (InvocationTargetException exc) {
exc.printStackTrace();
} catch (IllegalAccessException exc) {
exc.printStackTrace();
} catch (InstantiationException exc) {
exc.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvalidCompressionMethodException e) {
e.printStackTrace();
}
}
} catch (ClosedChannelException exc) {
if (isKeepAlive()) {
throw exc;
}
}
return null;
}
protected PsmEvent run(PsmEvent event, PsmInterp interp, Object[] argArray) {
try {
return (PsmEvent) method.invoke(null, argArray);
} catch (IllegalAccessException ex) {
// This really should never happen, given the checks at
// construction time.
throw new PsmMethodActionException(ex.toString());
} catch (InvocationTargetException ex) {
// This may occur if the method throws a runtime exception. Rather
// than wrap it in a PsmMethodActionException, let it percolate up.
// If not a RuntimeException, wrap it in a PsmMethodActionException.
Throwable th = ex.getTargetException();
if (th instanceof RuntimeException) {
throw (RuntimeException) th;
} else {
throw new PsmMethodActionException(
"Exception thrown from " + "target method invocation " + " is not a Runtime Exception",
th);
}
}
}
/**
* Parses array from given JSONArray. Supports parsing of primitive types and {@link
* com.vk.sdk.api.model.VKApiModel} instances.
*
* @param array JSONArray to parse
* @param arrayClass type of array field in class.
* @return object to set to array field in class
* @throws org.json.JSONException if given array have incompatible type with given field.
*/
private static Object parseArrayViaReflection(JSONArray array, Class arrayClass)
throws JSONException {
Object result = Array.newInstance(arrayClass.getComponentType(), array.length());
Class<?> subType = arrayClass.getComponentType();
for (int i = 0; i < array.length(); i++) {
try {
Object item = array.opt(i);
if (VKApiModel.class.isAssignableFrom(subType) && item instanceof JSONObject) {
VKApiModel model = (VKApiModel) subType.newInstance();
item = model.parse((JSONObject) item);
}
Array.set(result, i, item);
} catch (InstantiationException e) {
throw new JSONException(e.getMessage());
} catch (IllegalAccessException e) {
throw new JSONException(e.getMessage());
} catch (IllegalArgumentException e) {
throw new JSONException(e.getMessage());
}
}
return result;
}
/**
* Fire an event to the registered listeners, but stop on a PropertyVetoException. Subclasses may
* choose to implement their own fire method, and just use this class for the add/remove methods.
*
* @param evt the Event we're going to pass to the listeners
* @throws java.beans.PropertyVetoException
*/
protected final void firePropertyEvent(Object evt, Method m) throws PropertyVetoException {
// grab a reference to the listeners
Object[] array = fListeners;
if (array.length == 0) return;
Object[] params = fCachedParams;
if (params == null) params = new Object[] {evt}; // wasn't available, make a new array
else {
fCachedParams = null; // set to null in case fire is called re-entrantly
params[0] = evt;
}
try {
for (int i = 0; i < array.length; i++) {
try {
m.invoke(array[i], params);
} catch (IllegalAccessException iae) {
iae.printStackTrace();
} catch (InvocationTargetException ite) {
Throwable t = ite.getTargetException();
if (t instanceof PropertyVetoException) throw ((PropertyVetoException) t);
else t.printStackTrace();
}
if ((evt instanceof Consumable) && ((Consumable) evt).isConsumed()) {
if (gDebugEvents) Engine.debugLog("Consumed By : " + array[i]);
return;
}
}
} finally {
// make our param array available for re-use
// doesn't matter if we made it fresh, or already
// reused it from a previous fire call
params[0] = null;
fCachedParams = params;
}
}
/**
* オブジェクトのメソッドを呼び出す
*
* @param Object o メソッドを呼び出したいオブジェクト
* @param String methodName 呼び出したいメソッドの名前
* @param Object... args メソッドのパラメータ
* @throws NoSuchMethodException
*/
public static Object invoke(Object o, String methodName, Object... args)
throws SecurityException, ClassNotFoundException, NoSuchMethodException {
StringBuffer tempMessage = new StringBuffer();
Method method = null;
// //argsArray:メソッドの引数の型配列
// Class<?>[] argsArray = new Class<?>[args.length];
// for(int i = 0; i < args.length; i++){
// argsArray[i] = getClassObject(args[i]);
// //スーパークラスを引数にとれるように修正
// }
// try {
// method = o.getClass().getMethod(methodName, argsArray);
// } catch (NoSuchMethodException e) {
// try{
// method = o.getClass().getDeclaredMethod(methodName, argsArray);
// }catch (NoSuchMethodException e2) {
// message = "NoSuchMethodException\r\n";
// display.append(message);
// }
// }
/////////////////////////////////////////
// argsArray:メソッドの引数の型配列
Class<?>[] argsArray = new Class<?>[args.length];
for (int i = 0; i < args.length; i++) {
argsArray[i] = getClassObject(args[i]);
}
method = getMethod(o, args, methodName, argsArray);
////////////////////////////////////////
tempMessage.append("method: " + method.getName() + " is called.\r\n");
if (Modifier.isPrivate(method.getModifiers())) {
method.setAccessible(true);
}
if (o.equals(null)) {
if (Modifier.isStatic(method.getModifiers()) == false) {
throw new NoSuchMethodException();
}
}
try {
Type returnType = method.getGenericReturnType();
tempMessage.append("return type: " + returnType.toString() + "\r\n");
if (returnType.equals(Void.TYPE)) {
tempMessage.append("return value: " + "なし\r\n");
} else {
tempMessage.append("return value: " + method.invoke(o, args).toString() + "\r\n");
}
message = tempMessage.toString();
display.append(message);
return method.invoke(o, args);
} catch (IllegalArgumentException e) {
e.printStackTrace();
message = tempMessage.append("IllegalArgumentException\r\n").toString();
display.append(message);
} catch (IllegalAccessException e) {
e.printStackTrace();
message = tempMessage.append("IllegalAccessException\r\n").toString();
display.append(message);
} catch (InvocationTargetException e) {
e.printStackTrace();
tempMessage.append("InvocationTargetException\r\n");
message = tempMessage.append(e.getCause().toString() + "\r\n").toString();
display.append(message);
}
return null;
}
/**
* Parses object with follow rules:
*
* <p>1. All fields should had a public access. 2. The name of the filed should be fully equal to
* name of JSONObject key. 3. Supports parse of all Java primitives, all {@link String}, arrays of
* primitive types, {@link String}s and {@link com.vk.sdk.api.model.VKApiModel}s, list
* implementation line {@link VKList}, {@link com.vk.sdk.api.model.VKAttachments.VKAttachment} or
* {@link com.vk.sdk.api.model.VKPhotoSizes}, {@link com.vk.sdk.api.model.VKApiModel}s.
*
* <p>4. Boolean fields defines by vk_int == 1 expression.
*
* @param object object to initialize
* @param source data to read values
* @param <T> type of result
* @return initialized according with given data object
* @throws org.json.JSONException if source object structure is invalid
*/
@SuppressWarnings({"rawtypes", "unchecked"})
public static <T> T parseViaReflection(T object, JSONObject source) throws JSONException {
if (source.has("response")) {
source = source.optJSONObject("response");
}
if (source == null) {
return object;
}
for (Field field : object.getClass().getFields()) {
field.setAccessible(true);
String fieldName = field.getName();
Class<?> fieldType = field.getType();
Object value = source.opt(fieldName);
if (value == null) {
continue;
}
try {
if (fieldType.isPrimitive() && value instanceof Number) {
Number number = (Number) value;
if (fieldType.equals(int.class)) {
field.setInt(object, number.intValue());
} else if (fieldType.equals(long.class)) {
field.setLong(object, number.longValue());
} else if (fieldType.equals(float.class)) {
field.setFloat(object, number.floatValue());
} else if (fieldType.equals(double.class)) {
field.setDouble(object, number.doubleValue());
} else if (fieldType.equals(boolean.class)) {
field.setBoolean(object, number.intValue() == 1);
} else if (fieldType.equals(short.class)) {
field.setShort(object, number.shortValue());
} else if (fieldType.equals(byte.class)) {
field.setByte(object, number.byteValue());
}
} else {
Object result = field.get(object);
if (value.getClass().equals(fieldType)) {
result = value;
} else if (fieldType.isArray() && value instanceof JSONArray) {
result = parseArrayViaReflection((JSONArray) value, fieldType);
} else if (VKPhotoSizes.class.isAssignableFrom(fieldType) && value instanceof JSONArray) {
Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
result = constructor.newInstance((JSONArray) value);
} else if (VKAttachments.class.isAssignableFrom(fieldType)
&& value instanceof JSONArray) {
Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
result = constructor.newInstance((JSONArray) value);
} else if (VKList.class.equals(fieldType)) {
ParameterizedType genericTypes = (ParameterizedType) field.getGenericType();
Class<?> genericType = (Class<?>) genericTypes.getActualTypeArguments()[0];
if (VKApiModel.class.isAssignableFrom(genericType)
&& Parcelable.class.isAssignableFrom(genericType)
&& Identifiable.class.isAssignableFrom(genericType)) {
if (value instanceof JSONArray) {
result = new VKList((JSONArray) value, genericType);
} else if (value instanceof JSONObject) {
result = new VKList((JSONObject) value, genericType);
}
}
} else if (VKApiModel.class.isAssignableFrom(fieldType) && value instanceof JSONObject) {
result = ((VKApiModel) fieldType.newInstance()).parse((JSONObject) value);
}
field.set(object, result);
}
} catch (InstantiationException e) {
throw new JSONException(e.getMessage());
} catch (IllegalAccessException e) {
throw new JSONException(e.getMessage());
} catch (NoSuchMethodException e) {
throw new JSONException(e.getMessage());
} catch (InvocationTargetException e) {
throw new JSONException(e.getMessage());
} catch (NoSuchMethodError e) {
// Примечание Виталия:
// Вы не поверите, но у некоторых вендоров getFields() вызывает ВОТ ЭТО.
// Иногда я всерьез задумываюсь, правильно ли я поступил, выбрав Android в качестве
// платформы разработки.
throw new JSONException(e.getMessage());
}
}
return object;
}
private void dump() throws IOException {
lookupMethod = null;
try {
lookupMethod = catalog.getClass().getMethod("lookup", new Class[] {java.lang.String.class});
} catch (NoSuchMethodException e) {
} catch (SecurityException e) {
}
Method pluralMethod = null;
try {
pluralMethod = catalog.getClass().getMethod("get_msgid_plural_table", new Class[0]);
} catch (NoSuchMethodException e) {
} catch (SecurityException e) {
}
Field pluralField = null;
try {
pluralField = catalog.getClass().getField("plural");
} catch (NoSuchFieldException e) {
} catch (SecurityException e) {
}
// Search for the header entry.
{
Object header_entry = null;
Enumeration keys = catalog.getKeys();
while (keys.hasMoreElements())
if ("".equals(keys.nextElement())) {
header_entry = lookup("");
break;
}
// If there is no header entry, fake one.
// FIXME: This is not needed; right after po_lex_charset_init set
// the PO charset to UTF-8.
if (header_entry == null) header_entry = "Content-Type: text/plain; charset=UTF-8\n";
dumpMessage("", null, header_entry);
}
// Now the other messages.
{
Enumeration keys = catalog.getKeys();
Object plural = null;
if (pluralMethod != null) {
// msgfmt versions > 0.13.1 create a static get_msgid_plural_table()
// method.
try {
plural = pluralMethod.invoke(catalog, new Object[0]);
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.getTargetException().printStackTrace();
}
} else if (pluralField != null) {
// msgfmt versions <= 0.13.1 create a static plural field.
try {
plural = pluralField.get(catalog);
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
if (plural instanceof String[]) {
// A GNU gettext created class with plural handling, Java2 format.
int i = 0;
while (keys.hasMoreElements()) {
String key = (String) keys.nextElement();
Object value = lookup(key);
String key_plural = (value instanceof String[] ? ((String[]) plural)[i++] : null);
if (!"".equals(key)) dumpMessage(key, key_plural, value);
}
if (i != ((String[]) plural).length)
throw new RuntimeException("wrong plural field length");
} else if (plural instanceof Hashtable) {
// A GNU gettext created class with plural handling, Java format.
while (keys.hasMoreElements()) {
String key = (String) keys.nextElement();
if (!"".equals(key)) {
Object value = lookup(key);
String key_plural =
(value instanceof String[] ? (String) ((Hashtable) plural).get(key) : null);
dumpMessage(key, key_plural, value);
}
}
} else if (plural == null) {
// No plural handling.
while (keys.hasMoreElements()) {
String key = (String) keys.nextElement();
if (!"".equals(key)) dumpMessage(key, null, lookup(key));
}
} else throw new RuntimeException("wrong plural field value");
}
}
/**
* Processes the request coming to the servlet and grabs the attributes set by the servlet and
* uses them to fire off pre-determined methods set in the setupActionMethods function of the
* servlet.
*
* @param request the http request coming from the browser.
* @param response the http response going to the browser.
* @throws javax.servlet.ServletException
* @throws java.io.IOException
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
if (!actionInitialized) {
LogController.write(this, "This dispatcher servlet is not initialized properly!");
return;
}
if (actionTag == null) {
LogController.write(this, "There is no action attribute tag name!");
return;
}
HttpSession httpSession = request.getSession();
UserSession userSession = (UserSession) httpSession.getAttribute("user_session");
if (userSession == null) {
LogController.write(this, "User session is no longer available in this http session.");
userSession = new UserSession();
// We always want a user session though...
httpSession.setAttribute("user_session", userSession);
}
String action = (String) request.getAttribute(actionTag);
try {
if (action == null) {
// There is no action attribute specified, check parameters.
String external_action = (String) request.getParameter(actionTag);
if (external_action != null) {
Method method = externalActions.get(external_action);
if (method != null) {
LogController.write(this, "Performing external action: " + external_action);
method.invoke(this, new Object[] {userSession, request, response});
} else {
if (defaultExternalMethod != null) {
LogController.write(this, "Performing default external action.");
defaultExternalMethod.invoke(this, new Object[] {userSession, request, response});
} else {
LogController.write(this, "Unable to perform default external action.");
}
}
} else {
if (defaultExternalMethod != null) {
LogController.write(this, "Performing default external action.");
defaultExternalMethod.invoke(this, new Object[] {userSession, request, response});
} else {
LogController.write(this, "Unable to perform default external action.");
}
}
} else {
Method method = internalActions.get(action);
if (method != null) {
LogController.write(this, "Performing internal action: " + action);
method.invoke(this, new Object[] {userSession, request, response});
} else {
if (defaultInternalMethod != null) {
LogController.write(this, "Performing default internal action.");
defaultInternalMethod.invoke(this, new Object[] {userSession, request, response});
} else {
LogController.write(this, "Unable to perform default internal action.");
}
}
request.removeAttribute("application_action");
}
} catch (IllegalAccessException accessEx) {
LogController.write(this, "Exception while processing request: " + accessEx.getMessage());
} catch (InvocationTargetException invokeEx) {
LogController.write(this, "Exception while processing request: " + invokeEx.toString());
invokeEx.printStackTrace();
} catch (Exception ex) {
LogController.write(this, "Unknown exception: " + ex.toString());
}
}
/**
* Reads an XML element into a bean property by first locating the XML element corresponding to
* this property.
*
* @param ob The bean whose property is being set
* @param desc The property that will be set
* @param nodes The list of XML items that may contain the property
* @throws IOException If there is an error reading the document
*/
public void readProperty(Object ob, PropertyDescriptor desc, NodeList nodes, NamedNodeMap attrs)
throws IOException {
int numAttrs = attrs.getLength();
for (int i = 0; i < numAttrs; i++) {
// See if the attribute name matches the property name
if (namesMatch(desc.getName(), attrs.item(i).getNodeName())) {
// Get the method used to set this property
Method setter = desc.getWriteMethod();
// If this object has no setter, don't bother writing it
if (setter == null) continue;
// Get the value of the property
Object obValue = getObjectValue(desc, attrs.item(i).getNodeValue());
if (obValue != null) {
try {
// Set the property value
setter.invoke(ob, new Object[] {obValue});
} catch (InvocationTargetException exc) {
throw new IOException(
"Error setting property " + desc.getName() + ": " + exc.toString());
} catch (IllegalAccessException exc) {
throw new IOException(
"Error setting property " + desc.getName() + ": " + exc.toString());
}
}
return;
}
}
int numNodes = nodes.getLength();
Vector arrayBuild = null;
for (int i = 0; i < numNodes; i++) {
Node node = nodes.item(i);
// If this node isn't an element, skip it
if (!(node instanceof Element)) continue;
Element element = (Element) node;
// See if the tag name matches the property name
if (namesMatch(desc.getName(), element.getTagName())) {
// Get the method used to set this property
Method setter = desc.getWriteMethod();
// If this object has no setter, don't bother writing it
if (setter == null) continue;
// Get the value of the property
Object obValue = getObjectValue(desc, element);
// 070201 MAW: Modified from change submitted by Steve Poulson
if (setter.getParameterTypes()[0].isArray()) {
if (arrayBuild == null) {
arrayBuild = new Vector();
}
arrayBuild.addElement(obValue);
// 070201 MAW: Go ahead and read through the rest of the nodes in case
// another one matches the array. This has the effect of skipping
// over the "return" statement down below
continue;
}
if (obValue != null) {
try {
// Set the property value
setter.invoke(ob, new Object[] {obValue});
} catch (InvocationTargetException exc) {
throw new IOException(
"Error setting property " + desc.getName() + ": " + exc.toString());
} catch (IllegalAccessException exc) {
throw new IOException(
"Error setting property " + desc.getName() + ": " + exc.toString());
}
}
return;
}
}
// If we build a vector of array members, convert the vector into
// an array and save it in the property
if (arrayBuild != null) {
// Get the method used to set this property
Method setter = desc.getWriteMethod();
if (setter == null) return;
Object[] obValues = (Object[]) Array.newInstance(desc.getPropertyType(), arrayBuild.size());
arrayBuild.copyInto(obValues);
try {
setter.invoke(ob, new Object[] {obValues});
} catch (InvocationTargetException exc) {
throw new IOException("Error setting property " + desc.getName() + ": " + exc.toString());
} catch (IllegalAccessException exc) {
throw new IOException("Error setting property " + desc.getName() + ": " + exc.toString());
}
return;
}
}
/**
* Reads XML element(s) into an indexed bean property by first locating the XML element(s)
* corresponding to this property.
*
* @param ob The bean whose property is being set
* @param desc The property that will be set
* @param nodes The list of XML items that may contain the property
* @throws IOException If there is an error reading the document
*/
public void readIndexedProperty(
Object ob, IndexedPropertyDescriptor desc, NodeList nodes, NamedNodeMap attrs)
throws IOException {
// Create a vector to hold the property values
Vector v = new Vector();
int numAttrs = attrs.getLength();
for (int i = 0; i < numAttrs; i++) {
// See if this attribute matches the property name
if (namesMatch(desc.getName(), attrs.item(i).getNodeName())) {
// Get the property value
Object obValue = getObjectValue(desc, attrs.item(i).getNodeValue());
if (obValue != null) {
// Add the value to the list of values to be set
v.addElement(obValue);
}
}
}
int numNodes = nodes.getLength();
for (int i = 0; i < numNodes; i++) {
Node node = nodes.item(i);
// Skip non-element nodes
if (!(node instanceof Element)) continue;
Element element = (Element) node;
// See if this element tag matches the property name
if (namesMatch(desc.getName(), element.getTagName())) {
// Get the property value
Object obValue = getObjectValue(desc, element);
if (obValue != null) {
// Add the value to the list of values to be set
v.addElement(obValue);
}
}
}
// Get the method used to set the property value
Method setter = desc.getWriteMethod();
// If this property has no setter, don't write it
if (setter == null) return;
// Create a new array of property values
Object propArray = Array.newInstance(desc.getPropertyType().getComponentType(), v.size());
// Copy the vector into the array
v.copyInto((Object[]) propArray);
try {
// Store the array of property values
setter.invoke(ob, new Object[] {propArray});
} catch (InvocationTargetException exc) {
throw new IOException("Error setting property " + desc.getName() + ": " + exc.toString());
} catch (IllegalAccessException exc) {
throw new IOException("Error setting property " + desc.getName() + ": " + exc.toString());
}
}
public static void main(String[] args) {
// Obtain the class object if we know the name of the class
Class rental = RentCar.class;
try {
// get the absolute name of the class
String rentalClassPackage = rental.getName();
System.out.println("Class Name is: " + rentalClassPackage);
// get the simple name of the class (without package info)
String rentalClassNoPackage = rental.getSimpleName();
System.out.println("Class Name without package is: " + rentalClassNoPackage);
// get the package name of the class
Package rentalPackage = rental.getPackage();
System.out.println("Package Name is: " + rentalPackage);
// get all the constructors of the class
Constructor[] constructors = rental.getConstructors();
System.out.println("Constructors are: " + Arrays.toString(constructors));
// get constructor with specific argument
Constructor constructor = rental.getConstructor(Integer.TYPE);
// initializing an object of the RentCar class
RentCar rent = (RentCar) constructor.newInstance(455);
// get all methods of the class including declared methods of
// superclasses
// in that case, superclass of RentCar is the class java.lang.Object
Method[] allmethods = rental.getMethods();
System.out.println("Methods are: " + Arrays.toString(allmethods));
for (Method method : allmethods) {
System.out.println("method = " + method.getName());
}
// get all methods declared in the class
// but excludes inherited methods.
Method[] declaredMethods = rental.getDeclaredMethods();
System.out.println("Declared Methods are: " + Arrays.toString(declaredMethods));
for (Method dmethod : declaredMethods) {
System.out.println("method = " + dmethod.getName());
}
// get method with specific name and parameters
Method oneMethod = rental.getMethod("computeRentalCost", new Class[] {Integer.TYPE});
System.out.println("Method is: " + oneMethod);
// call computeRentalCost method with parameter int
oneMethod.invoke(rent, 4);
// get all the parameters of computeRentalCost
Class[] parameterTypes = oneMethod.getParameterTypes();
System.out.println(
"Parameter types of computeRentalCost() are: " + Arrays.toString(parameterTypes));
// get the return type of computeRentalCost
Class returnType = oneMethod.getReturnType();
System.out.println("Return type is: " + returnType);
// gets all the public member fields of the class RentCar
Field[] fields = rental.getFields();
System.out.println("Public Fields are: ");
for (Field oneField : fields) {
// get public field name
Field field = rental.getField(oneField.getName());
String fieldname = field.getName();
System.out.println("Fieldname is: " + fieldname);
// get public field type
Object fieldType = field.getType();
System.out.println("Type of field " + fieldname + " is: " + fieldType);
// get public field value
Object value = field.get(rent);
System.out.println("Value of field " + fieldname + " is: " + value);
}
// How to access private member fields of the class
// getDeclaredField() returns the private field
Field privateField = RentCar.class.getDeclaredField("type");
String name = privateField.getName();
System.out.println("One private Fieldname is: " + name);
// makes this private field instance accessible
// for reflection use only, not normal code
privateField.setAccessible(true);
// get the value of this private field
String fieldValue = (String) privateField.get(rent);
System.out.println("fieldValue = " + fieldValue);
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}