*/
package org.opendaylight.controller.cluster.datastore;
-import com.google.common.base.Preconditions;
+import static java.util.Objects.requireNonNull;
+
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.RangeSet;
import com.google.common.collect.TreeRangeSet;
import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
-
/**
* Chained transaction specialization of {@link AbstractFrontendHistory}. It prevents concurrent open transactions.
*
final ShardDataTreeTransactionChain chain, final Map<UnsignedLong, Boolean> closedTransactions,
final RangeSet<UnsignedLong> purgedTransactions) {
super(persistenceId, tree, closedTransactions, purgedTransactions);
- this.chain = Preconditions.checkNotNull(chain);
+ this.chain = requireNonNull(chain);
}
static LocalFrontendHistory create(final String persistenceId, final ShardDataTree tree,