/**
* Service method for backtracking with serialization-based saving of {@link ConstraintNetwork}s.
* This method backs up {@link ConstraintNetwork}s before branching.
*/
private HashMap<ConstraintSolver, byte[]> backupCNs(MultiConstraintSolver conSol) {
// Here we want to save the CNs
ByteArrayOutputStream bos = null;
ObjectOutputStream oos = null;
HashMap<ConstraintSolver, byte[]> currentLevel = new HashMap<ConstraintSolver, byte[]>();
try {
bos = new ByteArrayOutputStream();
oos = new ObjectOutputStream(bos);
for (ConstraintSolver cs : conSol.getConstraintSolvers()) {
logger.finest("Backing up CN of " + cs.getClass().getSimpleName());
ConstraintNetwork cn = cs.getConstraintNetwork();
oos.writeObject(cn);
byte[] backup = bos.toByteArray();
currentLevel.put(cs, backup);
if (cs instanceof MultiConstraintSolver) {
// System.out.println("RECURSIVE on " + cs.getClass().getSimpleName());
HashMap<ConstraintSolver, byte[]> lower = backupCNs((MultiConstraintSolver) cs);
currentLevel.putAll(lower);
}
}
return currentLevel;
} catch (NotSerializableException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Test
public void testNonSerializable() throws IOException {
try {
final EventEnablingPredicateFilter<DateDetector> filter =
new EventEnablingPredicateFilter<DateDetector>(
new DateDetector(AbsoluteDate.J2000_EPOCH), new DummyNonSerializablePredicate());
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bos);
oos.writeObject(filter);
Assert.fail("an exception should habe been thrown");
} catch (NotSerializableException nse) {
Assert.assertTrue(nse.getMessage().contains("DummyNonSerializablePredicate"));
}
}
// Object must be Serializable
public static byte[] objectToByteArray(Object obj) throws NotSerializableException {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(baos);
out.writeObject(obj);
return baos.toByteArray();
} catch (NotSerializableException e) {
// this is the only IOException that
// shouldn't signal a bizarre error...
e.fillInStackTrace();
throw e;
} catch (IOException e) {
e.printStackTrace();
throw new Error("IOException writing to a byte array!");
}
}
/**
* Serialize the object o (and any Serializable objects it refers to) and store its serialized
* state in File f.
*/
public static void store(Serializable o, File f) throws IOException {
FileOutputStream file = new FileOutputStream(f);
ObjectOutputStream out = new ObjectOutputStream(file);
try {
out.writeObject(o);
} catch (java.io.NotSerializableException e) {
System.err.println(
"Error: Object "
+ o.getClass()
+ " is not serializable - run settings cannot be stored.");
e.printStackTrace();
}
out.flush();
out.close();
file.close();
}
/**
* Serialize and save a variable.
*
* @param field The variable as a field.
*/
@SuppressWarnings("resource")
public synchronized void saveField(Field field) {
if (field.getName().equals("updateQueue")) {
return;
}
File tempFile = new File("./Data/server/" + field.getName() + ".tmp");
tempFile.delete();
try {
ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(tempFile));
out.writeObject(field.get(this));
out.close();
new File("./Data/server/" + field.getName() + ".var").delete();
tempFile.renameTo(new File("./Data/server/" + field.getName() + ".var"));
} catch (NotSerializableException e) {
e.printStackTrace();
return;
} catch (IOException | IllegalArgumentException | IllegalAccessException e) {
e.printStackTrace();
}
tempFile.delete();
}
@Override
public void execute(CommandExecutor executor, String[] args) {
if (args.length == 1) {
Player who = executor.getServer().findPlayer(args[0]);
if (who != null) {
if (executor.getServer().findPlayer(args[0]) == executor) {
executor.sendMessage("You can't change your own rank!");
return;
}
if (who.getGroup().permissionlevel >= executor.getGroup().permissionlevel
&& (!(executor instanceof Console))) {
executor.sendMessage("You can't rank players of the equal or higher rank!");
return;
}
Group toRank = GroupActions.getPreviousRank(args[0]);
if (toRank == null) {
executor.sendMessage("No lower ranks exist!");
return;
}
if (toRank.permissionlevel >= executor.getGroup().permissionlevel
&& (!(executor instanceof Console))) {
executor.sendMessage("You can't rank players to a rank higher than or equal to yours!");
return;
}
try {
if (GroupManagerAPI.demotePlayer(args[0])) {
Player pl = executor.getServer().findPlayer(args[0]);
executor
.getServer()
.sendGlobalMessage(
pl.getDisplayColor()
+ pl.username
+ executor.getServer().defaultColor
+ " was demoted to "
+ toRank.color
+ toRank.name);
} else {
executor.sendMessage("Failed to set player's rank!");
}
} catch (NotSerializableException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
} else {
Group ranked = Group.getGroup(args[0]);
if (ranked == null) {
Group.getDefault().addMember(args[0]);
ranked = Group.getDefault();
}
if (ranked.permissionlevel >= executor.getGroup().permissionlevel
&& (!(executor instanceof Console))) {
executor.sendMessage("You can't rank players of the equal or higher rank!");
return;
}
Group toRank = GroupActions.getPreviousRank(args[0]);
if (toRank == null) {
executor.sendMessage("No lower ranks exist!");
return;
}
if (toRank.permissionlevel >= executor.getGroup().permissionlevel
&& (!(executor instanceof Console))) {
executor.sendMessage("You can't rank players to a rank higher than or equal to yours!");
return;
}
try {
if (GroupManagerAPI.demotePlayer(args[0])) {
executor
.getServer()
.sendGlobalMessage(
"&f(Offline)"
+ args[0]
+ executor.getServer().defaultColor
+ " was demoted to "
+ toRank.color
+ toRank.name);
} else {
executor.sendMessage("Failed to set player's rank!");
}
} catch (NotSerializableException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
} else {
help(executor);
return;
}
}