| /* |
| |
| Derby - Class org.apache.derby.impl.sql.compile.TransactionStatementNode |
| |
| 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.derby.impl.sql.compile; |
| |
| import org.apache.derby.iapi.services.context.ContextManager; |
| |
| /** |
| * A TransactionStatementNode represents any type of Transaction statement: |
| * SET TRANSACTION, COMMIT, and ROLLBACK. |
| * |
| */ |
| |
| abstract class TransactionStatementNode extends StatementNode |
| { |
| |
| TransactionStatementNode(ContextManager cm) { |
| super(cm); |
| } |
| |
| int activationKind() |
| { |
| return StatementNode.NEED_NOTHING_ACTIVATION; |
| } |
| /** |
| * COMMIT and ROLLBACK are allowed to commit |
| * and rollback, duh. |
| * |
| * @return false |
| */ |
| @Override |
| public boolean isAtomic() |
| { |
| return false; |
| } |
| |
| /** |
| * Returns whether or not this Statement requires a set/clear savepoint |
| * around its execution. The following statement "types" do not require them: |
| * Cursor - unnecessary and won't work in a read only environment |
| * Xact - savepoint will get blown away underneath us during commit/rollback |
| * |
| * @return boolean Whether or not this Statement requires a set/clear savepoint |
| */ |
| @Override |
| public boolean needsSavepoint() |
| { |
| return false; |
| } |
| } |