Package de.aristaflow.adept2.model.common.collection

Class LegacyHandling

java.lang.Object

de.aristaflow.adept2.model.common.collection.LegacyHandling

public class LegacyHandling
extends Object

This class handles problems with API changes of the RemoteIterator API, that is RemoteIterator.drop() being replaced by RemoteIterator.close(). Both methods throwing IOException instead of DataSourceException, which also applies to RemoteIterator.keepAlive(long).

Constructor Summary

Constructors

Constructor	Description
LegacyHandling()

Method Summary

Modifier and Type	Method	Description
static void	close(RemoteIterator<?> ri, Throwable thrown)	Tries to close the designated RemoteIterator by trying the legacy method RemoteIterator.drop() if appropriate since the designated Throwable indicates that RemoteIterator.close() does not exist.
static Throwable	unwrap(UndeclaredThrowableException ute)	Unwraps the throwable of the designated UndeclaredThrowableException.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

LegacyHandling

public LegacyHandling()

Method Details

unwrap

public static Throwable unwrap(UndeclaredThrowableException ute)

Unwraps the throwable of the designated UndeclaredThrowableException. This will also unwrap causes of CommunicationStackExceptions. The returned exception will be the first throwable that is not one of the unwrapped ones. If null is wrapped,

Parameters:

ute - The UndeclaredThrowableException thrown from the invocation.

Returns:

The throwable wrapped within UndeclaredThrowableException and/or CommunicationStackException or the innermost UndeclaredThrowableException or CommunicationStackException that wraps null.

close

public static void close(RemoteIterator<?> ri,
 Throwable thrown)
                  throws DataSourceException,
IOException

Tries to close the designated RemoteIterator by trying the legacy method RemoteIterator.drop() if appropriate since the designated Throwable indicates that RemoteIterator.close() does not exist.

Parameters:

ri - The remote iterator to close.

thrown - The exception that occurred when calling RemoteIterator.close() on the designated remote iterator, usually a UndeclaredThrowableException.

Throws:

DataSourceException - If the designated thrown is a (wrapped) DataSourceException, this will be forwarded directly without calling RemoteIterator.drop(). If not, this may be the DataSourceException thrown by RemoteIterator.drop().

IOException - If the designated thrown is a (wrapped) IOException, this will be forwarded directly without calling RemoteIterator.drop(). If not, this may be the IOException thrown by RemoteIterator.drop().

de.aristaflow.adept2.model.communication.ServiceConnectionException - If an exception is unwrapped from an UndeclaredThrowableException that is a DataSourceException nor an IOException this exception will be wrapped in a ServiceConnectionException.