| /************************************************************** |
| * |
| * 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. |
| * |
| *************************************************************/ |
| |
| |
| #ifndef __com_sun_star_sdbc_TransactionIsolation_idl__ |
| #define __com_sun_star_sdbc_TransactionIsolation_idl__ |
| |
| module com { module sun { module star { module sdbc { |
| |
| |
| /** distinguishes different possible transaction isolation levels. |
| */ |
| published constants TransactionIsolation |
| { |
| |
| /** indicates that transactions are not supported. |
| */ |
| const long NONE = 0; |
| |
| /** Dirty reads, non-repeatable reads and phantom reads can occur. |
| This level allows a row changed by one transaction to be read |
| by another transaction before any changes in that row have been |
| committed (a "dirty read"). If any of the changes are rolled back, |
| the second transaction will have retrieved an invalid row. |
| */ |
| const long READ_UNCOMMITTED = 1; |
| |
| /** Dirty reads are prevented; non-repeatable reads and phantom |
| reads can occur. This level only prohibits a transaction |
| from reading a row with uncommitted changes in it. |
| */ |
| const long READ_COMMITTED = 2; |
| |
| /** Dirty reads and non-repeatable reads are prevented; phantom |
| reads can occur. This level prohibits a transaction from |
| reading a row with uncommitted changes in it, and it also |
| prohibits the situation where one transaction reads a row, |
| a second transaction alters the row, and the first transaction |
| rereads the row, getting different values the second time |
| (a "non-repeatable read"). |
| */ |
| const long REPEATABLE_READ = 4; |
| |
| /** Dirty reads, non-repeatable reads and phantom reads are prevented. |
| This level includes the prohibitions in |
| <code>REPEATABLE_READ</code> |
| and further prohibits the |
| situation where one transaction reads all rows that satisfy |
| a WHERE condition, a second transaction inserts a row that |
| satisfies that WHERE condition, and the first transaction |
| rereads for the same condition, retrieving the additional |
| "phantom" row in the second read. |
| */ |
| const long SERIALIZABLE = 8; |
| }; |
| |
| //============================================================================= |
| |
| }; }; }; }; |
| |
| /*=========================================================================== |
| ===========================================================================*/ |
| #endif |