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https://github.com/Alfresco/alfresco-community-repo.git
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389f996f29
- Provides transaction-aware locking - Post-transaction cleanup is automatically done - Retrying for lock acquisition is handled internally as well - Downgraded the lock concurrency tests for the build machine (maybe 50 threads was too much) - Deadlock tests added for the high-level locking git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@13968 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
117 lines
4.5 KiB
Java
117 lines
4.5 KiB
Java
/*
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* Copyright (C) 2005-2007 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.transaction;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import java.util.TreeSet;
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/**
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* Helper class that will look up or create transactional resources.
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* This shortcuts some of the "<i>if not existing, then create</i>" code.
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*
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* @author Derek Hulley
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* @since 3.2
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*/
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public abstract class TransactionalResourceHelper
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{
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/**
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* Support method to retrieve or create and bind a <tt>HashMap</tt> to the current transaction.
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*
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* @param <K> the map key type
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* @param <V> the map value type
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* @param resourceKey the key under which the resource will be stored
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* @return Returns an previously-bound <tt>Map</tt> or else a newly-bound <tt>HashMap</tt>
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*/
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public static final <K,V> Map<K,V> getMap(Object resourceKey)
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{
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Map<K,V> map = AlfrescoTransactionSupport.<Map<K,V>>getResource(resourceKey);
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if (map == null)
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{
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map = new HashMap<K, V>(29);
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AlfrescoTransactionSupport.bindResource(resourceKey, map);
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}
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return map;
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}
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/**
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* Support method to retrieve or create and bind a <tt>HashSet</tt> to the current transaction.
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*
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* @param <V> the set value type
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* @param resourceKey the key under which the resource will be stored
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* @return Returns an previously-bound <tt>Set</tt> or else a newly-bound <tt>HashSet</tt>
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*/
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public static final <V> Set<V> getSet(Object resourceKey)
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{
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Set<V> set = AlfrescoTransactionSupport.<Set<V>>getResource(resourceKey);
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if (set == null)
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{
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set = new HashSet<V>(29);
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AlfrescoTransactionSupport.bindResource(resourceKey, set);
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}
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return set;
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}
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/**
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* Support method to retrieve or create and bind a <tt>TreeSet</tt> to the current transaction.
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*
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* @param <V> the set value type
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* @param resourceKey the key under which the resource will be stored
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* @return Returns an previously-bound <tt>TreeSet</tt> or else a newly-bound <tt>TreeSet</tt>
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*/
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public static final <V> TreeSet<V> getTreeSet(Object resourceKey)
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{
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TreeSet<V> set = AlfrescoTransactionSupport.<TreeSet<V>>getResource(resourceKey);
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if (set == null)
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{
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set = new TreeSet<V>();
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AlfrescoTransactionSupport.bindResource(resourceKey, set);
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}
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return set;
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}
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/**
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* Support method to retrieve or create and bind a <tt>ArrayList</tt> to the current transaction.
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*
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* @param <V> the list value type
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* @param resourceKey the key under which the resource will be stored
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* @return Returns an previously-bound <tt>List</tt> or else a newly-bound <tt>ArrayList</tt>
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*/
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public static final <V> List<V> getList(Object resourceKey)
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{
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List<V> list = AlfrescoTransactionSupport.<List<V>>getResource(resourceKey);
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if (list == null)
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{
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list = new ArrayList<V>(29);
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AlfrescoTransactionSupport.bindResource(resourceKey, list);
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}
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return list;
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}
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}
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