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Diffstat (limited to 'framework/src/onos/core/api/src/main/java/org/onosproject/store/service/TransactionContext.java')
-rw-r--r-- | framework/src/onos/core/api/src/main/java/org/onosproject/store/service/TransactionContext.java | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/store/service/TransactionContext.java b/framework/src/onos/core/api/src/main/java/org/onosproject/store/service/TransactionContext.java deleted file mode 100644 index ef972536..00000000 --- a/framework/src/onos/core/api/src/main/java/org/onosproject/store/service/TransactionContext.java +++ /dev/null @@ -1,78 +0,0 @@ -/* - * Copyright 2015 Open Networking Laboratory - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package org.onosproject.store.service; - -/** - * Provides a context for transactional operations. - * <p> - * A transaction context is a vehicle for grouping operations into a unit with the - * properties of atomicity, isolation, and durability. Transactions also provide the - * ability to maintain an application's invariants or integrity constraints, - * supporting the property of consistency. Together these properties are known as ACID. - * <p> - * A transaction context provides a boundary within which transactions - * are run. It also is a place where all modifications made within a transaction - * are cached until the point when the transaction commits or aborts. It thus ensures - * isolation of work happening with in the transaction boundary. Within a transaction - * context isolation level is REPEATABLE_READS i.e. only data that is committed can be read. - * The only uncommitted data that can be read is the data modified by the current transaction. - */ -public interface TransactionContext { - - /** - * Returns the unique transactionId. - * - * @return transaction id - */ - long transactionId(); - - /** - * Returns if this transaction context is open. - * - * @return true if open, false otherwise - */ - boolean isOpen(); - - /** - * Starts a new transaction. - */ - void begin(); - - /** - * Commits a transaction that was previously started thereby making its changes permanent - * and externally visible. - * - * @return true if this transaction succeeded, otherwise false. - */ - boolean commit(); - - /** - * Aborts any changes made in this transaction context and discarding all locally cached updates. - */ - void abort(); - - /** - * Returns a transactional map data structure with the specified name. - * - * @param <K> key type - * @param <V> value type - * @param mapName name of the transactional map - * @param serializer serializer to use for encoding/decoding keys and values of the map - * @return Transactional Map - */ - <K, V> TransactionalMap<K, V> getTransactionalMap(String mapName, Serializer serializer); -} |