/**
* Returns a Field object that represents an attribute of a class
*
* @param type the class that holds the attribute
* @param name the name of the attribute
* @return a Field object that represents the attribute
*/
public static Field getField(Class<?> type, String name) {
try {
return type.getField(name);
} catch (NoSuchFieldException e) {
throw ExceptionMapper.configurationException(e, type.getName() + '.' + name);
}
}
public static void writeParam(String xNameFile) {
//
// write to file xpar all parameters.....
//
IOseq xFile;
xFile = new IOseq(xNameFile);
xFile.IOseqOpenW(false);
try {
Class c = Class.forName("jneat.Neat");
Field[] fieldlist = c.getDeclaredFields();
for (int i = 0; i < fieldlist.length; i++) {
Field f1 = fieldlist[i];
String x1 = f1.getName();
if (x1.startsWith("p_")) {
Field f2 = c.getField("d_" + Neat.normalizeName(x1));
Object s1 = f1.get(c);
Object s2 = f2.get(c);
// String riga = s1 + " " + s2;
String riga = x1 + " " + s1;
xFile.IOseqWrite(riga);
}
}
} catch (Throwable e) {
System.err.println(e);
}
xFile.IOseqCloseW();
}
public static String getDescription(String xkey) {
try {
Class c = Class.forName("jneat.Neat");
Field f = c.getField("d_" + xkey);
return (String) f.get(c);
} catch (Throwable e) {
return null;
}
}
// Use reflection to get version since early versions
// of ImageJ do not have the IJ.getVersion() method.
String version() {
String version = "";
try {
Class ijClass = ImageJ.class;
Field field = ijClass.getField("VERSION");
version = (String) field.get(ijClass);
} catch (Exception ex) {
}
return version;
}
public static Object invoke_description(Class c) {
try {
Field f = c.getField("description_array");
return f.get(null);
} catch (NoSuchFieldException e) {
} // eat the exception; apparently c is not a helper
catch (Exception e) {
} // HMM, SHOULD WE TRY HARDER TO FIGURE OUT WHAT'S GOING ON HERE ???
return null;
}
int[] init(int... dimensions) {
int size = dimensions.length > 0 ? dimensions[0] : 0;
if (___subrecord___ == null) {
final String[] indexPrefixes = {
"", "s", "_", "Index", "Length", "Ref", "Header", "Info", "Table"
};
for (String indexPrefix : indexPrefixes) {
try {
___subrecord___ =
(Class<? extends Enum>)
Class.forName(getClass().getPackage().getName() + '.' + name() + indexPrefix);
try {
size = ___subrecord___.getField("___recordlen___").getInt(null);
} catch (Exception e) {
}
break;
} catch (ClassNotFoundException e) {
}
}
}
for (String vPrefixe1 :
new String[] {
"_", "", "$", "Value",
}) {
if (___valueclass___ != null) break;
String suffix = vPrefixe1;
for (String name1 :
new String[] {
name().toLowerCase(), name(),
}) {
if (___valueclass___ != null) break;
final String trailName = name1;
if (trailName.endsWith(suffix)) {
for (String aPackage1 :
new String[] {
"", getClass().getPackage().getName() + ".", "java.lang.", "java.util.",
})
if (___valueclass___ == null) break;
else
try {
___valueclass___ = Class.forName(aPackage1 + name().replace(suffix, ""));
} catch (ClassNotFoundException e) {
}
}
}
}
int seek = dimensions.length > 1 ? dimensions[1] : ___recordlen___;
___recordlen___ = Math.max(___recordlen___, seek + size);
return new int[] {size, seek};
}
public static Object getFieldValue(Object target, String name, boolean strict) {
Class<?> type = target.getClass();
try {
Field field = type.getField(name);
return getFieldValue(field, target, strict);
} catch (NoSuchFieldException e) {
if (strict) throw ExceptionMapper.configurationException(e, type.getName() + '.' + name);
else {
escalator.escalate("Class '" + type + "' does not have a field '" + name + "'", type, name);
return null;
}
}
}
/**
* Initializes the fields of this class based on the first two lines of a case which include the
* class name and parameter types.
*
* @return true is end of file is reached.
*/
private static boolean initFields(LineNumberReader commands, boolean generatingCommands) {
results = new StringBuffer();
String className = getNextRealLine(commands);
// End of file reached
if (className == null) return true;
// Load the class from file
Class<? extends Invariant> classToTest = asInvClass(getClass(className));
try {
classToTest.getField("dkconfig_enabled"); // Enable if needs to be done
InvariantAddAndCheckTester.config.apply(className + ".enabled", "true");
} catch (NoSuchFieldException e) { // Otherwise do nothing
}
if (generatingCommands) {
results.append(className + lineSep);
}
// Instantiate variables to be used as the names in the
// invariants, variables are labeled a,b,c and so on as they
// appear
String typeString = getNextRealLine(commands);
types = getTypes(typeString);
VarInfo[] vars = getVarInfos(classToTest, types);
PptSlice sl = createSlice(vars, daikon.test.Common.makePptTopLevel("Test:::OBJECT", vars));
// Create an actual instance of the class
invariantToTest = instantiateClass(classToTest, sl);
addModified = getAddModified(invariantToTest.getClass());
checkModified = getCheckModified(invariantToTest.getClass());
outputProducer = getOutputProducer(invariantToTest.getClass());
assert getArity(invariantToTest.getClass()) == types.length;
if (generatingCommands) {
results.append(typeString + lineSep);
}
return false;
}
static {
ParticleUtils.version = "";
try {
ParticleUtils.version = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
ParticleUtils.packetType = Class.forName(getPacketPlayOutParticles());
final Class<?> typeCraftPlayer = Class.forName(getCraftPlayerClasspath());
final Class<?> typeNMSPlayer = Class.forName(getNMSPlayerClasspath());
final Class<?> typePlayerConnection = Class.forName(getPlayerConnectionClasspath());
ParticleUtils.getHandle = typeCraftPlayer.getMethod("getHandle", (Class<?>[]) new Class[0]);
ParticleUtils.playerConnection = typeNMSPlayer.getField("playerConnection");
ParticleUtils.sendPacket =
typePlayerConnection.getMethod("sendPacket", Class.forName(getPacketClasspath()));
} catch (Exception e) {
System.out.println("Failed to setup reflection for PacketPlayOutWorldParticles");
e.printStackTrace();
}
}
public static void main(String[] args)
throws ClassNotFoundException, NoSuchMethodException, IllegalAccessException,
InvocationTargetException, NoSuchFieldException {
Reflection obj = new Reflection();
Class<Reflection> c = Reflection.class;
// test the ability to reflectively get constants, which are usually baked
// in to bytecodes by the compiler
Field f = c.getField("constValue");
System.out.println(f.get(null));
Field f2 = c.getField("constInt");
System.out.println(f2.get(null));
Field f3 = c.getField("constFloat");
System.out.println(f3.get(null));
Field f4 = c.getField("constDouble");
System.out.println(f4.get(null));
Field f5 = c.getField("constLong");
System.out.println(f5.get(null));
Field f6 = c.getField("constShort");
System.out.println(f6.get(null));
Field f7 = c.getField("constBool");
System.out.println(f7.get(null));
Method bytecodeMethod = c.getClass().getMethod("toString");
Method nativeMethod = c.getClass().getMethod("isArray");
Method nativeMethodWithArgs = c.getClass().getMethod("isInstance", Object.class);
Method unboxingMethod = c.getMethod("add", long.class, long.class);
Method boxingMethod = c.getMethod("add", Long.class, Long.class);
Method voidMethod = c.getMethod("foo");
// regular method reflected invocation
System.out.println("toString: " + bytecodeMethod.invoke(c));
// native method reflected invocation
System.out.println("is array? " + nativeMethod.invoke(c));
// native method reflected invocation with parameters
System.out.println("is instance? " + nativeMethodWithArgs.invoke(c, obj));
// unboxing has to be handled specially by our native method invoker
Long a = new Long(40L);
Long b = new Long(2L);
System.out.println("unboxing: " + unboxingMethod.invoke(null, a, b));
// boxing is handled by javac
System.out.println("boxing: " + boxingMethod.invoke(null, 1300L, 37L));
// void return values
System.out.println("void return: " + voidMethod.invoke(null));
}
public Predicted(DataFrame<M> f, String pfn) {
frame = f;
numericField = null;
Class<M> mcls = frame.getModelClass();
try {
Field mf = mcls.getField(pfn);
Class t = mf.getType();
if (Model.isSubclass(t, Number.class)) {
numericField = mf;
} else {
throw new IllegalArgumentException(
String.format("Field %s is not numeric", pfn, t.getName()));
}
} catch (NoSuchFieldException e) {
e.printStackTrace();
throw new IllegalArgumentException(String.format("Unknown field name: %s", pfn));
}
}
// Needed by NativeJavaObject serializer
public static void writeAdapterObject(Object javaObject, ObjectOutputStream out)
throws IOException {
Class<?> cl = javaObject.getClass();
out.writeObject(cl.getSuperclass().getName());
Class<?>[] interfaces = cl.getInterfaces();
String[] interfaceNames = new String[interfaces.length];
for (int i = 0; i < interfaces.length; i++) interfaceNames[i] = interfaces[i].getName();
out.writeObject(interfaceNames);
try {
Object delegee = cl.getField("delegee").get(javaObject);
out.writeObject(delegee);
return;
} catch (IllegalAccessException e) {
} catch (NoSuchFieldException e) {
}
throw new IOException();
}
public static void getParam(vectTableModel _model) {
String xline;
StringTokenizer st = null;
String s1 = null;
String s2 = null;
Object m1 = null;
Field fx = null;
int j = 0;
try {
Class c = Class.forName("jneat.Neat");
Field[] fieldlist = c.getDeclaredFields();
int number_params = fieldlist.length / 2;
j = 0;
for (int i = 0; i < number_params; i++) {
Field f1 = fieldlist[i];
String nomeF = f1.getName();
String nomeF1 = nomeF.substring(2);
if (nomeF.substring(0, 2).equalsIgnoreCase("p_")) {
Object o1 = nomeF1;
fx = c.getField("p_" + nomeF1);
Object o2 = fx.get(c);
_model.setValueAt(o1, j, 0);
_model.setValueAt(o2, j, 1);
j++;
}
}
} catch (Throwable e) {
System.err.println(e);
}
_model.rows = j;
return;
}
static {
// compute primitives/primitiveMap/primitiveToWrapper
for (Class<?> c : primitiveWrappers) {
try {
Field f = c.getField("TYPE");
Class<?> p = (Class<?>) f.get(null);
primitives.add(p);
primitiveMap.put(p.getName(), p);
primitiveToWrapper.put(p.getName(), c);
} catch (Exception e) {
throw new AssertionError(e);
}
}
// compute editableTypes
for (Class<?> c : primitives) {
editableTypes.add(c.getName());
}
for (Class<?> c : primitiveWrappers) {
editableTypes.add(c.getName());
}
for (Class<?> c : extraEditableClasses) {
editableTypes.add(c.getName());
}
// compute numericalTypes
for (Class<?> c : primitives) {
String name = c.getName();
if (!name.equals(Boolean.TYPE.getName())) {
numericalTypes.add(name);
}
}
for (Class<?> c : primitiveWrappers) {
String name = c.getName();
if (!name.equals(Boolean.class.getName())) {
numericalTypes.add(name);
}
}
}
public static void updateParam(vectTableModel _model) {
//
// write to file xpar all parameters.....
//
for (int j = 0; j < _model.data.size(); j++) {
try {
Class c = Class.forName("jneat.Neat");
ParamValue ox = (ParamValue) _model.data.elementAt(j);
Object k = _model.getValueAt(j, 0);
Object kv = _model.getValueAt(j, 1);
String xkey = k.toString();
String xval = kv.toString();
/*
System.out.print("\n j = "+j+" xkey = "+xkey);
System.out.print(" xval = "+xval);
*/
Field f1 = c.getField("p_" + xkey);
Object fty = f1.getType();
if (fty.toString().equals("double")) {
double n1 = Double.parseDouble(xval);
f1.set(c, (new Double(n1)));
}
if (fty.toString().equals("int")) {
int n1 = Integer.parseInt(xval);
f1.set(c, (new Integer(n1)));
}
} catch (Throwable e) {
System.out.print("\n errore su jneat.updateParam = " + e);
}
}
}
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();
}
}