static void print(ObjectStreamClass desc) {
System.out.println("Class name : " + desc.getName());
System.out.println("SerialVersionUID: " + desc.getSerialVersionUID());
System.out.println("ObjectStreamFields");
ObjectStreamField[] fields = desc.getFields();
int numPrim = 0;
int numObj = 0;
for (int i = 0; i < fields.length; i++) {
ObjectStreamField f = fields[i];
String fieldName = "<fieldName unknown>";
try {
fieldName = f.getName();
} catch (NoSuchMethodError e) {
// ignore. ObjectStreamField.getName did not exist in JDK 1.1
}
if (f.isPrimitive()) {
numPrim++;
System.out.println("" + i + ". " + f.getType().getName() + " " + fieldName);
} else {
numObj++;
String ts = "<unknown>";
try {
ts = f.getTypeString();
} catch (NoSuchMethodError e) {
// ignore. ObjectStreamField.getTypeString did not exist in JDK 1.1
ts = "<field type unknown>";
}
System.out.println("" + i + ". " + ts + " " + fieldName);
}
}
System.out.println("# primitive fields:" + numPrim + " # object ref fields:" + numObj);
}
private static Map<String, Long> getMessageSVUID(Type messageType)
throws SJIOException,
ClassNotFoundException // SJCompilerUtils has a simpler version of this routine.
{
HashMap<String, Long> ours = new HashMap<String, Long>();
if (messageType
instanceof
SJSessionType) // Should come before ordinary class cases? (But SJSessionType shouldn't be a
// class type).
{
ours.putAll(getClassSVUIDs((SJSessionType) messageType));
} else if (messageType.isPrimitive()) {
// No SVUID needed for primitive types.
} else if (messageType.isClass()) // Duplicated from above.
{
String className = messageType.toClass().fullName();
Class<?> c = Class.forName(className);
if (c.isInterface()) {
// Interfaces don't have SVUIDs (so what should we do here?). // This encourages use of
// abstract classes rather than interfaces for message types?
} else {
ObjectStreamClass osc = ObjectStreamClass.lookup(c);
if (osc == null) {
throw new SJIOException("Class not serializable: " + c);
}
ours.put(
className,
osc
.getSerialVersionUID()); // Not possible to find a different SVUID for the same
// (name) class here? // SVUIDs could be recorded in the
// session type objects. // Put currently problems working
// with these values at compilation time if the class
// binary is not available a priori (SVUID value not built
// yet?).
}
} else if (messageType.isArray()) {
throw new SJIOException("Array types not done yet: " + messageType);
}
return ours;
}
