AtomicReferenceFieldUpdaterImpl(
Class<T> tclass, Class<V> vclass, String fieldName, Class<?> caller) {
Field field = null;
Class fieldClass = null;
int modifiers = 0;
try {
field = tclass.getDeclaredField(fieldName);
modifiers = field.getModifiers();
sun.reflect.misc.ReflectUtil.ensureMemberAccess(caller, tclass, null, modifiers);
sun.reflect.misc.ReflectUtil.checkPackageAccess(tclass);
fieldClass = field.getType();
} catch (Exception ex) {
throw new RuntimeException(ex);
}
if (vclass != fieldClass) throw new ClassCastException();
if (vclass.isPrimitive()) throw new IllegalArgumentException("Must be reference type");
if (!Modifier.isVolatile(modifiers))
throw new IllegalArgumentException("Must be volatile type");
this.cclass = (Modifier.isProtected(modifiers) && caller != tclass) ? caller : null;
this.tclass = tclass;
if (vclass == Object.class) this.vclass = null;
else this.vclass = vclass;
offset = unsafe.objectFieldOffset(field);
}
public void beanClass(Class<?> beanClass) {
if ((beanClass == null) ? this.beanClass != null : !beanClass.equals(this.beanClass)) {
ReflectUtil.checkPackageAccess(beanClass);
this.beanClass = beanClass;
this.descriptor = null;
}
}
/**
* The value of <code>get(uidClassID)</code> must be the <code>String</code> name of a class that
* implements the corresponding <code>ComponentUI</code> class. If the class hasn't been loaded
* before, this method looks up the class with <code>uiClassLoader.loadClass()</code> if a non
* <code>null</code> class loader is provided, <code>classForName()</code> otherwise.
*
* <p>If a mapping for <code>uiClassID</code> exists or if the specified class can't be found,
* return <code>null</code>.
*
* <p>This method is used by <code>getUI</code>, it's usually not necessary to call it directly.
*
* @param uiClassID a string containing the class ID
* @param uiClassLoader the object which will load the class
* @return the value of <code>Class.forName(get(uidClassID))</code>
* @see #getUI
*/
public Class<? extends ComponentUI> getUIClass(String uiClassID, ClassLoader uiClassLoader) {
try {
String className = (String) get(uiClassID);
if (className != null) {
ReflectUtil.checkPackageAccess(className);
Class cls = (Class) get(className);
if (cls == null) {
if (uiClassLoader == null) {
cls = SwingUtilities.loadSystemClass(className);
} else {
cls = uiClassLoader.loadClass(className);
}
if (cls != null) {
// Save lookup for future use, as forName is slow.
put(className, cls);
}
}
return cls;
}
} catch (ClassNotFoundException e) {
return null;
} catch (ClassCastException e) {
return null;
}
return null;
}
/*
* Parse a field value from the XML produced by toXMLString().
* Given a descriptor XML containing <field name="nnn" value="vvv">,
* the argument to this method will be "vvv" (a string including the
* containing quote characters). If vvv begins and ends with parentheses,
* then it may contain:
* - the characters "null", in which case the result is null;
* - a value of the form "some.class.name/xxx", in which case the
* result is equivalent to `new some.class.name("xxx")';
* - some other string, in which case the result is that string,
* without the parentheses.
*/
private static Object parseQuotedFieldValue(String s) throws XMLParseException {
s = unquote(s);
if (s.equalsIgnoreCase("(null)")) return null;
if (!s.startsWith("(") || !s.endsWith(")")) return s;
final int slash = s.indexOf('/');
if (slash < 0) {
// compatibility: old code didn't include class name
return s.substring(1, s.length() - 1);
}
final String className = s.substring(1, slash);
final Constructor<?> constr;
try {
ReflectUtil.checkPackageAccess(className);
final ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
final Class<?> c = Class.forName(className, false, contextClassLoader);
constr = c.getConstructor(new Class<?>[] {String.class});
} catch (Exception e) {
throw new XMLParseException(e, "Cannot parse value: <" + s + ">");
}
final String arg = s.substring(slash + 1, s.length() - 1);
try {
return constr.newInstance(new Object[] {arg});
} catch (Exception e) {
final String msg = "Cannot construct instance of " + className + " with arg: <" + s + ">";
throw new XMLParseException(e, msg);
}
}
/**
* Constructs an instance of a property editor using the current property editor class.
*
* <p>If the property editor class has a public constructor that takes an Object argument then it
* will be invoked using the bean parameter as the argument. Otherwise, the default constructor
* will be invoked.
*
* @param bean the source object
* @return a property editor instance or null if a property editor has not been defined or cannot
* be created
* @since 1.5
*/
public PropertyEditor createPropertyEditor(Object bean) {
Object editor = null;
final Class<?> cls = getPropertyEditorClass();
if (cls != null
&& PropertyEditor.class.isAssignableFrom(cls)
&& ReflectUtil.isPackageAccessible(cls)) {
Constructor<?> ctor = null;
if (bean != null) {
try {
ctor = cls.getConstructor(new Class<?>[] {Object.class});
} catch (Exception ex) {
// Fall through
}
}
try {
if (ctor == null) {
editor = cls.newInstance();
} else {
editor = ctor.newInstance(new Object[] {bean});
}
} catch (Exception ex) {
// Fall through
}
}
return (PropertyEditor) editor;
}
@Override
T getInstance() {
try {
ReflectUtil.checkPackageAccess(clazz);
return clazz.newInstance();
} catch (InstantiationException | IllegalAccessException ignored) {
}
return null;
}
public void bean(Object bean) {
this.bean = bean;
if (bean != null) {
Class<?> newClass = bean.getClass();
if ((beanClass == null) || !beanClass.isAssignableFrom(newClass)) {
ReflectUtil.checkPackageAccess(newClass);
this.beanClass = bean.getClass();
this.descriptor = null;
}
}
}
LockedUpdater(Class<T> tclass, String fieldName, Class<?> caller) {
Field field = null;
int modifiers = 0;
try {
field = tclass.getDeclaredField(fieldName);
modifiers = field.getModifiers();
sun.reflect.misc.ReflectUtil.ensureMemberAccess(caller, tclass, null, modifiers);
sun.reflect.misc.ReflectUtil.checkPackageAccess(tclass);
} catch (Exception ex) {
throw new RuntimeException(ex);
}
Class fieldt = field.getType();
if (fieldt != long.class) throw new IllegalArgumentException("Must be long type");
if (!Modifier.isVolatile(modifiers))
throw new IllegalArgumentException("Must be volatile type");
this.cclass = (Modifier.isProtected(modifiers) && caller != tclass) ? caller : null;
this.tclass = tclass;
offset = unsafe.objectFieldOffset(field);
}
private static <T> T convertFromString(String s, OpenType<T> openType) {
Class<T> c;
try {
ReflectUtil.checkPackageAccess(openType.safeGetClassName());
c = cast(Class.forName(openType.safeGetClassName()));
} catch (ClassNotFoundException e) {
throw new NoClassDefFoundError(e.toString()); // can't happen
}
// Look for: public static T valueOf(String)
Method valueOf;
try {
// It is safe to call this plain Class.getMethod because the class "c"
// was checked before by ReflectUtil.checkPackageAccess(openType.safeGetClassName());
valueOf = c.getMethod("valueOf", String.class);
if (!Modifier.isStatic(valueOf.getModifiers()) || valueOf.getReturnType() != c)
valueOf = null;
} catch (NoSuchMethodException e) {
valueOf = null;
}
if (valueOf != null) {
try {
return c.cast(MethodUtil.invoke(valueOf, null, new Object[] {s}));
} catch (Exception e) {
final String msg = "Could not convert \"" + s + "\" using method: " + valueOf;
throw new IllegalArgumentException(msg, e);
}
}
// Look for: public T(String)
Constructor<T> con;
try {
// It is safe to call this plain Class.getConstructor because the class "c"
// was checked before by ReflectUtil.checkPackageAccess(openType.safeGetClassName());
con = c.getConstructor(String.class);
} catch (NoSuchMethodException e) {
con = null;
}
if (con != null) {
try {
return con.newInstance(s);
} catch (Exception e) {
final String msg = "Could not convert \"" + s + "\" using constructor: " + con;
throw new IllegalArgumentException(msg, e);
}
}
throw new IllegalArgumentException(
"Don't know how to convert " + "string to " + openType.getTypeName());
}
<T> MBeanSupport(T resource, Class<T> mbeanInterfaceType) throws NotCompliantMBeanException {
if (mbeanInterfaceType == null) throw new NotCompliantMBeanException("Null MBean interface");
if (!mbeanInterfaceType.isInstance(resource)) {
final String msg =
"Resource class "
+ resource.getClass().getName()
+ " is not an instance of "
+ mbeanInterfaceType.getName();
throw new NotCompliantMBeanException(msg);
}
ReflectUtil.checkPackageAccess(mbeanInterfaceType);
this.resource = resource;
MBeanIntrospector<M> introspector = getMBeanIntrospector();
this.perInterface = introspector.getPerInterface(mbeanInterfaceType);
this.mbeanInfo = introspector.getMBeanInfo(resource, perInterface);
}
