Package org.gcube.informationsystem.resourceregistry.persistence.orientdb.utils

Class DuplicateKeyDetector

java.lang.Object

org.gcube.informationsystem.resourceregistry.persistence.orientdb.utils.DuplicateKeyDetector

public final class DuplicateKeyDetector
extends Object

Recognizes the failure of a commit refused by a unique index: a record carrying a key that another record already holds, reported by the backend with an ORecordDuplicatedException, which the layers above may have wrapped.

Author:

Luca Frosini (ISTI - CNR)

Method Summary

Modifier and Type	Method	Description
static Object	duplicatedKey(Throwable throwable)	Returns the key the unique index refused.
static boolean	isDuplicateKey(Throwable throwable)	Returns whether the given failure, or one of its causes, is a duplicate key.

Methods inherited from class java.lang.Object

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

Method Details

isDuplicateKey

public static boolean isDuplicateKey(Throwable throwable)

Returns whether the given failure, or one of its causes, is a duplicate key.

Parameters:

throwable - the failure

Returns:

true if a unique index refused the write

duplicatedKey

public static Object duplicatedKey(Throwable throwable)

Returns the key the unique index refused.

Parameters:

throwable - the failure

Returns:

the duplicated key, or null if the failure is not a duplicate key