| 1 | /** |
| 2 | * Copyright 2009 ATG DUST Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * |
| 7 | * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and limitations under the License. |
| 13 | */ |
| 14 | |
| 15 | package atg.adapter.gsa; |
| 16 | |
| 17 | import java.sql.Connection; |
| 18 | import java.sql.SQLException; |
| 19 | |
| 20 | import javax.transaction.InvalidTransactionException; |
| 21 | import javax.transaction.SystemException; |
| 22 | import javax.transaction.Transaction; |
| 23 | |
| 24 | import org.apache.log4j.Logger; |
| 25 | import org.apache.log4j.Priority; |
| 26 | |
| 27 | class DoInAutoCommit { |
| 28 | |
| 29 | private final GSARepositorySchemaGenerator mAutoCommit; |
| 30 | GSARepository mRepository = null; |
| 31 | Logger mLogger = Logger.getLogger(this.getClass()); |
| 32 | |
| 33 | /** |
| 34 | * Creates a new DoInAutoCommit which operates on the given repository. |
| 35 | * This class is used to allow code to be executed with autoCommit=true on |
| 36 | * its database connection. This class will suspend the current transaction |
| 37 | * if any before setting autoCommit=true. The transaction is resumed and |
| 38 | * autoCommit is returned to its original state after work is performed. |
| 39 | * |
| 40 | * @param pRepository |
| 41 | * @param pGsaRepositorySchemaGenerator TODO |
| 42 | */ |
| 43 | public DoInAutoCommit(GSARepositorySchemaGenerator pGsaRepositorySchemaGenerator, GSARepository pRepository) { |
| 44 | mAutoCommit = pGsaRepositorySchemaGenerator; |
| 45 | mRepository = pRepository; |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Executes the given work using the connections and logging of the |
| 50 | * repository passed into the constructor of this class. Returns true if the |
| 51 | * work was competed without any exceptions. |
| 52 | * |
| 53 | * @param pWork |
| 54 | */ |
| 55 | public boolean doInAutoCommit(AutoCommitable pWork) { |
| 56 | Transaction suspended = null; |
| 57 | boolean success = false; |
| 58 | try { |
| 59 | // Suspend the Current Transaction so we can set autoCommit=true |
| 60 | // Otherwise MSSQL will hang |
| 61 | suspended = mRepository.getTransactionManager().suspend(); |
| 62 | Connection c = mRepository.getConnection(); |
| 63 | if (mLogger.isDebugEnabled()) |
| 64 | mLogger.log(Priority.DEBUG,"autoCommit = " + c.getAutoCommit() |
| 65 | + " connection=" + c); |
| 66 | boolean savedAutoCommit = c.getAutoCommit(); |
| 67 | if (mLogger.isDebugEnabled()) |
| 68 | mLogger.log(Priority.DEBUG,"Setting auto commit = true on connection " + c); |
| 69 | c.setAutoCommit(true); |
| 70 | try { |
| 71 | pWork.doInAutoCommit(c); |
| 72 | success = true; |
| 73 | } finally { |
| 74 | if (c != null) { |
| 75 | if (mLogger.isDebugEnabled()) |
| 76 | mLogger.log(Priority.DEBUG,"Reverting autoCommit back to " |
| 77 | + savedAutoCommit); |
| 78 | c.setAutoCommit(savedAutoCommit); |
| 79 | } |
| 80 | if (suspended != null) { |
| 81 | try { |
| 82 | mRepository.getTransactionManager().resume(suspended); |
| 83 | } catch (InvalidTransactionException e) { |
| 84 | if (mRepository.isLoggingError()) |
| 85 | mLogger.log(Priority.ERROR,e); |
| 86 | } catch (IllegalStateException e) { |
| 87 | if (mRepository.isLoggingError()) |
| 88 | mLogger.log(Priority.ERROR,e); |
| 89 | } |
| 90 | } |
| 91 | } |
| 92 | } catch (SystemException e) { |
| 93 | if (mRepository.isLoggingError()) |
| 94 | mLogger.log(Priority.ERROR,e); |
| 95 | } catch (SQLException e) { |
| 96 | if (mRepository.isLoggingError()) |
| 97 | mLogger.log(Priority.ERROR,e); |
| 98 | } |
| 99 | return success; |
| 100 | } |
| 101 | } |