private Object ApplyGetters(Object target, String getters)
{
if (getters == null || getters.Equals(""))
{
return(target);
}
int firstDot = getters.IndexOf('.');
if (firstDot == -1)
{
firstDot = getters.Length();
}
String first = getters.Substring(0, firstDot);
String rest = getters.Substring(System.Math.Min(firstDot + 1, getters.Length()));
try
{
Method getter = null;
if (target != null)
{
getter = Statement.GetMethod(target.GetType(), "get" + NameGenerator.Capitalize(first), new Class[] {});
if (getter == null)
{
getter = Statement.GetMethod(target.GetType(), "is" + NameGenerator.Capitalize(first), new Class[] {});
}
if (getter == null)
{
getter = Statement.GetMethod(target.GetType(), first, new Class[] {});
}
}
if (getter == null)
{
throw new RuntimeException("No method called: " + first + " defined on " + target);
}
Object newTarget = MethodUtil.invoke(getter, target, new Object[] {});
return(ApplyGetters(newTarget, rest));
}
catch (Exception e)
{
throw new RuntimeException("Failed to call method: " + first + " on " + target, e);
}
}
/// <summary>
/// This default implementation of the <code>instantiate</code> method returns
/// an expression containing the predefined method name "new" which denotes a
/// call to a constructor with the arguments as specified in
/// the <code>DefaultPersistenceDelegate</code>'s constructor.
/// </summary>
/// <param name="oldInstance"> The instance to be instantiated. </param>
/// <param name="out"> The code output stream. </param>
/// <returns> An expression whose value is <code>oldInstance</code>.
/// </returns>
/// <exception cref="NullPointerException"> if {@code out} is {@code null}
/// and this value is used in the method
/// </exception>
/// <seealso cref= #DefaultPersistenceDelegate(String[]) </seealso>
protected internal override Expression Instantiate(Object oldInstance, Encoder @out)
{
int nArgs = Constructor.Length;
Class type = oldInstance.GetType();
Object[] constructorArgs = new Object[nArgs];
for (int i = 0; i < nArgs; i++)
{
try
{
Method method = FindMethod(type, this.Constructor[i]);
constructorArgs[i] = MethodUtil.invoke(method, oldInstance, new Object[0]);
}
catch (Exception e)
{
@out.ExceptionListener.ExceptionThrown(e);
}
}
return(new Expression(oldInstance, oldInstance.GetType(), "new", constructorArgs));
}
private Object InvokeInternal(Object proxy, Method method, Object[] arguments)
{
String methodName = method.Name;
if (method.DeclaringClass == typeof(Object))
{
// Handle the Object public methods.
if (methodName.Equals("hashCode"))
{
return(new Integer(System.identityHashCode(proxy)));
}
else if (methodName.Equals("equals"))
{
return(proxy == arguments[0] ? true : false);
}
else if (methodName.Equals("toString"))
{
//JAVA TO C# CONVERTER WARNING: The .NET Type.FullName property will not always yield results identical to the Java Class.getName method:
return(proxy.GetType().FullName + '@' + proxy.HashCode().ToString("x"));
}
}
if (ListenerMethodName_Renamed == null || ListenerMethodName_Renamed.Equals(methodName))
{
Class[] argTypes = null;
Object[] newArgs = null;
if (EventPropertyName_Renamed == null) // Nullary method.
{
newArgs = new Object[] {};
argTypes = new Class[] {};
}
else
{
Object input = ApplyGetters(arguments[0], EventPropertyName);
newArgs = new Object[] { input };
argTypes = new Class[] { input == null ? null : input.GetType() };
}
try
{
int lastDot = Action_Renamed.LastIndexOf('.');
if (lastDot != -1)
{
Target_Renamed = ApplyGetters(Target_Renamed, Action_Renamed.Substring(0, lastDot));
Action_Renamed = Action_Renamed.Substring(lastDot + 1);
}
Method targetMethod = Statement.GetMethod(Target_Renamed.GetType(), Action_Renamed, argTypes);
if (targetMethod == null)
{
targetMethod = Statement.GetMethod(Target_Renamed.GetType(), "set" + NameGenerator.Capitalize(Action_Renamed), argTypes);
}
if (targetMethod == null)
{
String argTypeString = (argTypes.Length == 0) ? " with no arguments" : " with argument " + argTypes[0];
throw new RuntimeException("No method called " + Action_Renamed + " on " + Target_Renamed.GetType() + argTypeString);
}
return(MethodUtil.invoke(targetMethod, Target_Renamed, newArgs));
}
catch (IllegalAccessException ex)
{
throw new RuntimeException(ex);
}
catch (InvocationTargetException ex)
{
Throwable th = ex.TargetException;
throw (th is RuntimeException) ? (RuntimeException)th : new RuntimeException(th);
}
}
return(null);
}
// Write out the properties of this instance.
private void InitBean(Class type, Object oldInstance, Object newInstance, Encoder @out)
{
foreach (Field field in type.Fields)
{
if (!ReflectUtil.isPackageAccessible(field.DeclaringClass))
{
continue;
}
int mod = field.Modifiers;
if (Modifier.IsFinal(mod) || Modifier.IsStatic(mod) || Modifier.IsTransient(mod))
{
continue;
}
try
{
Expression oldGetExp = new Expression(field, "get", new Object[] { oldInstance });
Expression newGetExp = new Expression(field, "get", new Object[] { newInstance });
Object oldValue = oldGetExp.Value;
Object newValue = newGetExp.Value;
@out.WriteExpression(oldGetExp);
if (!Objects.Equals(newValue, @out.Get(oldValue)))
{
@out.WriteStatement(new Statement(field, "set", new Object[] { oldInstance, oldValue }));
}
}
catch (Exception exception)
{
@out.ExceptionListener.ExceptionThrown(exception);
}
}
BeanInfo info;
try
{
info = Introspector.GetBeanInfo(type);
}
catch (IntrospectionException)
{
return;
}
// Properties
foreach (PropertyDescriptor d in info.PropertyDescriptors)
{
if (d.IsTransient())
{
continue;
}
try
{
DoProperty(type, d, oldInstance, newInstance, @out);
}
catch (Exception e)
{
@out.ExceptionListener.ExceptionThrown(e);
}
}
// Listeners
/*
* Pending(milne). There is a general problem with the archival of
* listeners which is unresolved as of 1.4. Many of the methods
* which install one object inside another (typically "add" methods
* or setters) automatically install a listener on the "child" object
* so that its "parent" may respond to changes that are made to it.
* For example the JTable:setModel() method automatically adds a
* TableModelListener (the JTable itself in this case) to the supplied
* table model.
*
* We do not need to explicitly add these listeners to the model in an
* archive as they will be added automatically by, in the above case,
* the JTable's "setModel" method. In some cases, we must specifically
* avoid trying to do this since the listener may be an inner class
* that cannot be instantiated using public API.
*
* No general mechanism currently
* exists for differentiating between these kind of listeners and
* those which were added explicitly by the user. A mechanism must
* be created to provide a general means to differentiate these
* special cases so as to provide reliable persistence of listeners
* for the general case.
*/
if (!type.IsSubclassOf(typeof(java.awt.Component)))
{
return; // Just handle the listeners of Components for now.
}
foreach (EventSetDescriptor d in info.EventSetDescriptors)
{
if (d.IsTransient())
{
continue;
}
Class listenerType = d.ListenerType;
// The ComponentListener is added automatically, when
// Contatiner:add is called on the parent.
if (listenerType == typeof([email protected]))
{
continue;
}
// JMenuItems have a change listener added to them in
// their "add" methods to enable accessibility support -
// see the add method in JMenuItem for details. We cannot
// instantiate this instance as it is a private inner class
// and do not need to do this anyway since it will be created
// and installed by the "add" method. Special case this for now,
// ignoring all change listeners on JMenuItems.
if (listenerType == typeof([email protected]) && type == typeof(javax.swing.JMenuItem))
{
continue;
}
EventListener[] oldL = new EventListener[0];
EventListener[] newL = new EventListener[0];
try
{
Method m = d.GetListenerMethod;
oldL = (EventListener[])MethodUtil.invoke(m, oldInstance, new Object[] {});
newL = (EventListener[])MethodUtil.invoke(m, newInstance, new Object[] {});
}
catch (Exception)
{
try
{
Method m = type.GetMethod("getListeners", new Class[] { typeof(Class) });
oldL = (EventListener[])MethodUtil.invoke(m, oldInstance, new Object[] { listenerType });
newL = (EventListener[])MethodUtil.invoke(m, newInstance, new Object[] { listenerType });
}
catch (Exception)
{
return;
}
}
// Asssume the listeners are in the same order and that there are no gaps.
// Eventually, this may need to do true differencing.
String addListenerMethodName = d.AddListenerMethod.Name;
for (int i = newL.Length; i < oldL.Length; i++)
{
// System.out.println("Adding listener: " + addListenerMethodName + oldL[i]);
InvokeStatement(oldInstance, addListenerMethodName, new Object[] { oldL[i] }, @out);
}
String removeListenerMethodName = d.RemoveListenerMethod.Name;
for (int i = oldL.Length; i < newL.Length; i++)
{
InvokeStatement(oldInstance, removeListenerMethodName, new Object[] { newL[i] }, @out);
}
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: private Object invokeInternal() throws Exception
private Object InvokeInternal()
{
Object target = Target;
String methodName = MethodName;
if (target == null || methodName == null)
{
throw new NullPointerException((target == null ? "target" : "methodName") + " should not be null");
}
Object[] arguments = Arguments;
if (arguments == null)
{
arguments = EmptyArray;
}
// Class.forName() won't load classes outside
// of core from a class inside core. Special
// case this method.
if (target == typeof(Class) && methodName.Equals("forName"))
{
return(ClassFinder.resolveClass((String)arguments[0], this.Loader));
}
Class[] argClasses = new Class[arguments.Length];
for (int i = 0; i < arguments.Length; i++)
{
argClasses[i] = (arguments[i] == null) ? null : arguments[i].GetType();
}
AccessibleObject m = null;
if (target is Class)
{
/*
* For class methods, simluate the effect of a meta class
* by taking the union of the static methods of the
* actual class, with the instance methods of "Class.class"
* and the overloaded "newInstance" methods defined by the
* constructors.
* This way "System.class", for example, will perform both
* the static method getProperties() and the instance method
* getSuperclass() defined in "Class.class".
*/
if (methodName.Equals("new"))
{
methodName = "newInstance";
}
// Provide a short form for array instantiation by faking an nary-constructor.
if (methodName.Equals("newInstance") && ((Class)target).Array)
{
Object result = Array.newInstance(((Class)target).ComponentType, arguments.Length);
for (int i = 0; i < arguments.Length; i++)
{
Array.set(result, i, arguments[i]);
}
return(result);
}
if (methodName.Equals("newInstance") && arguments.Length != 0)
{
// The Character class, as of 1.4, does not have a constructor
// which takes a String. All of the other "wrapper" classes
// for Java's primitive types have a String constructor so we
// fake such a constructor here so that this special case can be
// ignored elsewhere.
if (target == typeof(Character) && arguments.Length == 1 && argClasses[0] == typeof(String))
{
return(new Character(((String)arguments[0]).CharAt(0)));
}
try
{
m = ConstructorFinder.findConstructor((Class)target, argClasses);
}
catch (NoSuchMethodException)
{
m = null;
}
}
if (m == null && target != typeof(Class))
{
m = GetMethod((Class)target, methodName, argClasses);
}
if (m == null)
{
m = GetMethod(typeof(Class), methodName, argClasses);
}
}
else
{
/*
* This special casing of arrays is not necessary, but makes files
* involving arrays much shorter and simplifies the archiving infrastrcure.
* The Array.set() method introduces an unusual idea - that of a static method
* changing the state of an instance. Normally statements with side
* effects on objects are instance methods of the objects themselves
* and we reinstate this rule (perhaps temporarily) by special-casing arrays.
*/
if (target.GetType().IsArray&& (methodName.Equals("set") || methodName.Equals("get")))
{
int index = ((Integer)arguments[0]).IntValue();
if (methodName.Equals("get"))
{
return(Array.get(target, index));
}
else
{
Array.set(target, index, arguments[1]);
return(null);
}
}
m = GetMethod(target.GetType(), methodName, argClasses);
}
if (m != null)
{
try
{
if (m is Method)
{
return(MethodUtil.invoke((Method)m, target, arguments));
}
else
{
return(((Constructor)m).newInstance(arguments));
}
}
catch (IllegalAccessException iae)
{
throw new Exception("Statement cannot invoke: " + methodName + " on " + target.GetType(), iae);
}
catch (InvocationTargetException ite)
{
Throwable te = ite.TargetException;
if (te is Exception)
{
throw (Exception)te;
}
else
{
throw ite;
}
}
}
throw new NoSuchMethodException(ToString());
}
