8229999: Apply java.io.Serial annotations to security types in java.base
Reviewed-by: rriggs, mullan
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*
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package java.security;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamField;
import jdk.internal.access.SharedSecrets;
/**
* This exception is thrown by
* {@code doPrivileged(PrivilegedExceptionAction)} and
* {@code doPrivileged(PrivilegedExceptionAction,
* AccessControlContext context)} to indicate
* that the action being performed threw a checked exception. The exception
* thrown by the action can be obtained by calling the
* {@code getException} method. In effect, an
* {@code PrivilegedActionException} is a "wrapper"
* for an exception thrown by a privileged action.
*
* <p>As of release 1.4, this exception has been retrofitted to conform to
* the general purpose exception-chaining mechanism. The "exception thrown
* by the privileged computation" that is provided at construction time and
* accessed via the {@link #getException()} method is now known as the
* <i>cause</i>, and may be accessed via the {@link Throwable#getCause()}
* method, as well as the aforementioned "legacy method."
*
* @since 1.2
* @see PrivilegedExceptionAction
* @see AccessController#doPrivileged(PrivilegedExceptionAction)
* @see AccessController#doPrivileged(PrivilegedExceptionAction,AccessControlContext)
*/
public class PrivilegedActionException extends Exception {
// use serialVersionUID from JDK 1.2.2 for interoperability
@java.io.Serial
private static final long serialVersionUID = 4724086851538908602L;
/**
* Constructs a new PrivilegedActionException "wrapping"
* the specific Exception.
*
* @param exception The exception thrown
*/
public PrivilegedActionException(Exception exception) {
super(null, exception); // Disallow initCause
}
/**
* Returns the exception thrown by the privileged computation that
* resulted in this {@code PrivilegedActionException}.
*
* <p>This method predates the general-purpose exception chaining facility.
* The {@link Throwable#getCause()} method is now the preferred means of
* obtaining this information.
*
* @return the exception thrown by the privileged computation that
* resulted in this {@code PrivilegedActionException}.
* @see PrivilegedExceptionAction
* @see AccessController#doPrivileged(PrivilegedExceptionAction)
* @see AccessController#doPrivileged(PrivilegedExceptionAction,
* AccessControlContext)
*/
public Exception getException() {
return (Exception)super.getCause();
}
public String toString() {
String s = getClass().getName();
Throwable cause = super.getCause();
return (cause != null) ? (s + ": " + cause.toString()) : s;
}
/**
* Serializable fields for UndeclaredThrowableException.
*
* @serialField undeclaredThrowable Throwable
*/
@java.io.Serial
private static final ObjectStreamField[] serialPersistentFields = {
new ObjectStreamField("exception", Exception.class)
};
/*
* Reconstitutes the PrivilegedActionException instance from a stream
* and initialize the cause properly when deserializing from an older
* version.
*
* The getException and getCause method returns the private "exception"
* field in the older implementation and PrivilegedActionException::cause
* was set to null.
*/
@java.io.Serial
private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException {
ObjectInputStream.GetField fields = s.readFields();
Exception exception = (Exception) fields.get("exception", null);
if (exception != null) {
SharedSecrets.getJavaLangAccess().setCause(this, exception);
}
}
/*
* To maintain compatibility with older implementation, write a serial
* "exception" field with the cause as the value.
*/
@java.io.Serial
private void writeObject(ObjectOutputStream out) throws IOException {
ObjectOutputStream.PutField fields = out.putFields();
fields.put("exception", super.getCause());
out.writeFields();
}
}