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https://github.com/Alfresco/alfresco-community-repo.git
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a22fdceccd
- Moved setting of txn isolation level to ControlDAO - Retired patches where target schema is < 100 - Removed unreferenced patch implementations - Removed unreferenced DB scripts - Moved patch-specific queries (ACL upgrade counts) into patch-common-SqlMap.xml - Fixed count query result processing (max of nothing is NULL) leading to unboxing NPEs - All DM-modifying patches depend on DmPermissionsPatch i.e. it will normally run immediately after SQL scripts git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@21908 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
112 lines
4.2 KiB
Java
112 lines
4.2 KiB
Java
/*
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* Copyright (C) 2005-2009 Alfresco Software Limited.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* As a special exception to the terms and conditions of version 2.0 of
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* the GPL, you may redistribute this Program in connection with Free/Libre
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* and Open Source Software ("FLOSS") applications as described in Alfresco's
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* FLOSS exception. You should have recieved a copy of the text describing
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* the FLOSS exception, and it is also available here:
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* http://www.alfresco.com/legal/licensing"
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*/
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package org.alfresco.repo.domain.control;
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import java.sql.Savepoint;
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/**
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* DAO services for database control statements. It is sometimes necessary to
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* issue control statements on a database connection; these are not usually
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* supported in the ANSI SQL standard.
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*
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* @author Derek Hulley
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* @since 3.2SP1
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*/
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public interface ControlDAO
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{
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/**
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* Begin batching prepared statements for later execution.
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*
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* @see #executeBatch()
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*/
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public void startBatch();
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/**
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* Execute statements that were queued for batching.
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*
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* @see #startBatch()
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*/
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public void executeBatch();
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/**
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* Create a "Save Point" in the current transaction, for later selective rollback.
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* Creation <b>must</b> be accompanied by a matching {@link #rollbackToSavepoint(Savepoint)}
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* or {@link #releaseSavepoint(Savepoint)}.
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* <code><pre>
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* Savepoint savepoint = controlDAO.createSavepoint("functionF");
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* try
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* {
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* // Do something that could fail e.g. blind insert that might violate unique constraints
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* ...
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* // Success, so remove savepoint or risk crashing on long-running transactions
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* controlDAO.releaseSavepoint(savepoint);
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* }
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* catch (Throwable e)
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* {
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* controlDAO.rollbackToSavepoint(savepoint);
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* // Throw something that client code might be able to react to or try something else
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* ...
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* }
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* </pre></code>
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*
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* @param savepoint the name of the save point
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* @return Returns the handle to the savepoint or <tt>null</tt> if the
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* implementation does not support it
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*/
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public Savepoint createSavepoint(String savepoint);
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/**
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* Roll back to a previously-created "Save Point", discarding any intervening
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* changes to the current transaction.
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*
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* @param savepoint a previously-created savepoint
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*
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* @see #createSavepoint(String)
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*/
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public void rollbackToSavepoint(Savepoint savepoint);
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/**
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* Remove a previously-created "Save Point", writing any intervening updates
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* into the current transaction.
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*
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* @param savepoint the name of the save point
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*
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* @see #createSavepoint(String)
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*/
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public void releaseSavepoint(Savepoint savepoint);
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/**
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* Change the current transaction isolation level.
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* <p/>
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* <b>Note:</b> The isolation level should not - and for some DBs, cannot - be changed
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* except at the very start of the transaction
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*
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* @param isolationLevel the transaction isolation level
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* @return Returns the previously-set isolation
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* @throws IllegalStateException if the isolation level is invalid or cannot be changed
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*/
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public int setTransactionIsolationLevel(int isolationLevel);
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}
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