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https://github.com/Alfresco/alfresco-community-repo.git
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cefda8c965
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@18931 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
105 lines
3.8 KiB
Java
105 lines
3.8 KiB
Java
/*
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* Copyright (C) 2005-2010 Alfresco Software Limited.
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*
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* This file is part of Alfresco
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.alfresco.service.transaction;
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import javax.transaction.UserTransaction;
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import org.alfresco.repo.transaction.RetryingTransactionHelper;
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import org.alfresco.service.NotAuditable;
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import org.alfresco.service.PublicService;
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/**
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* Contract for retrieving access to a user transaction.
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* <p>
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* Note that the implementation of the {@link javax.transaction.UserTransaction}
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* is not able to provide the full set of status codes available on the
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* {@link javax.transaction.Status} class.
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*
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* @author David Caruana
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*/
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@PublicService
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public interface TransactionService
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{
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/**
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* Determine if ALL user transactions will be read-only.
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*
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* @return Returns true if all transactions are read-only.
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*/
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@NotAuditable
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public boolean isReadOnly();
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/**
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* Gets a user transaction that supports transaction propagation.
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* This is like the EJB <b>REQUIRED</b> transaction attribute.
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*
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* @return the user transaction
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*/
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@NotAuditable
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UserTransaction getUserTransaction();
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/**
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* Gets a user transaction that supports transaction propagation.
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* This is like the EJB <b>REQUIRED</b> transaction attribute.
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*
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* @param readOnly Set true for a READONLY transaction instance, false otherwise.
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* Note that it is not <i>always</i> possible to force a write transaction if the
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* system is in read-only mode.
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* @return the user transaction
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*/
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@NotAuditable
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UserTransaction getUserTransaction(boolean readOnly);
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/**
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* Gets a user transaction that ensures a new transaction is created.
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* Any enclosing transaction is not propagated.
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* This is like the EJB <b>REQUIRES_NEW</b> transaction attribute -
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* when the transaction is started, the current transaction will be
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* suspended and a new one started.
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*
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* @return Returns a non-propagating user transaction
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*/
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@NotAuditable
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UserTransaction getNonPropagatingUserTransaction();
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/**
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* Gets a user transaction that ensures a new transaction is created.
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* Any enclosing transaction is not propagated.
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* This is like the EJB <b>REQUIRES_NEW</b> transaction attribute -
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* when the transaction is started, the current transaction will be
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* suspended and a new one started.
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*
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* @param readOnly Set true for a READONLY transaction instance, false otherwise.
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* Note that it is not <i>always</i> possible to force a write transaction if the
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* system is in read-only mode.
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* @return Returns a non-gating user transaction
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*/
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@NotAuditable
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UserTransaction getNonPropagatingUserTransaction(boolean readOnly);
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/**
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* Get the standard instance of the helper object that supports transaction retrying.
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*
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* @return
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* Returns a helper object that executes units of work transactionally. The helper
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* can be reused or altered as required.
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*/
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@NotAuditable
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RetryingTransactionHelper getRetryingTransactionHelper();
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}
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