| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.cocoon.webapps.session; |
| |
| import org.apache.cocoon.ProcessingException; |
| import org.apache.cocoon.webapps.session.context.SessionContext; |
| |
| /** |
| * Transaction management<p> |
| * </p> |
| * Transactions are a series of get/set calls to a session context which must |
| * be seen as atomic (single modification). |
| * We distingish between reading and writing. Usually parallel reading is |
| * allowed but if one thread wants to write, no other can read or write. |
| * |
| * @author <a href="mailto:cziegeler@apache.org">Carsten Ziegeler</a> |
| * @deprecated This block is deprecated and will be removed in future versions. |
| * @version CVS $Id$ |
| */ |
| public interface TransactionManager { |
| |
| /** Avalon role */ |
| String ROLE = TransactionManager.class.getName();; |
| |
| |
| /** |
| * Reset the transaction management state. |
| */ |
| void resetTransactions(SessionContext context); |
| |
| /** |
| * Start a reading transaction. |
| * This call must always be matched with a stopReadingTransaction(). |
| * Otherwise the session context is blocked. |
| */ |
| void startReadingTransaction(SessionContext context) |
| throws ProcessingException; |
| |
| /** |
| * Stop a reading transaction. |
| * This call must always be done for each startReadingTransaction(). |
| * Otherwise the session context is blocked. |
| */ |
| void stopReadingTransaction(SessionContext context); |
| |
| /** |
| * Start a writing transaction. |
| * This call must always be matched with a stopWritingTransaction(). |
| * Otherwise the session context is blocked. |
| */ |
| void startWritingTransaction(SessionContext context) |
| throws ProcessingException; |
| |
| /** |
| * Stop a writing transaction. |
| * This call must always be done for each startWritingTransaction(). |
| * Otherwise the session context is blocked. |
| */ |
| void stopWritingTransaction(SessionContext context); |
| |
| } |