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Merged V2.2 to HEAD
8397: Fix for AR-2003, AR-2127, AR-2128 (Hibernate patch) git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@8506 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Derek Hulley
@@ -0,0 +1,269 @@
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/*
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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.domain.hibernate;
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import java.util.ArrayList;
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import java.util.HashSet;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.Set;
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import org.alfresco.util.GUID;
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import org.hibernate.CacheMode;
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import org.hibernate.Session;
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import org.hibernate.engine.EntityKey;
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import com.sun.corba.se.spi.legacy.connection.GetEndPointInfoAgainException;
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/**
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* Support to (optionally) listen to hibernate events generated by a hibernate session. The tracking is bound to a
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* transaction resource
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*
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* @author andyh
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*/
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public class HibernateSessionHelperResource implements HibernateSessionHelperResourceProvider
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{
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LinkedHashMap<String, Set<EntityKey>> marks = new LinkedHashMap<String, Set<EntityKey>>();
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String currentMark = null;
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HibernateSessionHelperResource()
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{
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}
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public String getCurrentMark()
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{
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return currentMark;
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}
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public List<String> getMarks(Session session)
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{
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ArrayList<String> answer = new ArrayList<String>(marks.size());
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for (String key : marks.keySet())
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{
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answer.add(key);
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}
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return answer;
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}
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public void mark(Session session)
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{
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Thread thread = Thread.currentThread();
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String guid = GUID.generate();
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mark(session, guid);
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}
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@SuppressWarnings("unchecked")
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public void mark(Session session, String label)
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{
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session.flush();
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if (label == null)
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{
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throw new HibernateSessionHelperResourceException("Null key is not supported");
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}
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if (marks.containsKey(label))
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{
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throw new HibernateSessionHelperResourceException("Key already exists - " + label);
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}
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if (marks.size() == 0)
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{
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SessionSizeResourceManager.setDisableInTransaction();
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}
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HashSet<EntityKey> mark = new HashSet<EntityKey>((Set<EntityKey>) session.getStatistics().getEntityKeys());
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marks.put(label, mark);
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currentMark = label;
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//System.out.println("Mark "+marks.size()+" "+currentMark);
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}
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public void removeMark(Session session)
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{
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if (currentMark != null)
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{
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removeMark(session, currentMark);
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}
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else
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{
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throw new HibernateSessionHelperResourceException("No current mark");
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}
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}
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public void removeMark(Session session, String label)
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{
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if (label == null)
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{
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throw new HibernateSessionHelperResourceException("Null key is not supported");
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}
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if (!marks.containsKey(label))
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{
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throw new HibernateSessionHelperResourceException("Key does not exist - " + label);
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}
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if (marks.size() > 0)
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{
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marks.remove(label);
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if (label.equals(currentMark))
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{
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currentMark = getLastMarkOrNull();
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}
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}
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if (marks.size() == 0)
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{
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SessionSizeResourceManager.setEnableInTransaction();
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}
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}
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public void reset(Session session)
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{
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if (currentMark != null)
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{
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doResetAndRemove(session, currentMark, false);
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}
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else
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{
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throw new HibernateSessionHelperResourceException("No current mark");
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}
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}
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public void reset(Session session, String label)
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{
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doResetAndRemove(session, label, false);
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}
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public void resetAndRemoveMark(Session session)
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{
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if (currentMark != null)
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{
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doResetAndRemove(session, currentMark, true);
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}
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else
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{
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throw new HibernateSessionHelperResourceException("No current mark");
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}
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}
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public void resetAndRemoveMark(Session session, String label)
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{
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doResetAndRemove(session, label, true);
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}
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@SuppressWarnings("unchecked")
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private void doResetAndRemove(Session session, String label, boolean remove)
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{
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if (label == null)
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{
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throw new HibernateSessionHelperResourceException("Null key is not supported");
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}
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if (!marks.containsKey(label))
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{
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throw new HibernateSessionHelperResourceException("Key does not exist - " + label);
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}
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if (marks.size() > 0)
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{
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session.flush();
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Set<EntityKey> check = marks.get(label);
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Set<EntityKey> current = new HashSet<EntityKey>((Set<EntityKey>) session.getStatistics().getEntityKeys());
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Set<Object> toEvict = new HashSet<Object>(Math.max((int) (current.size() / .75f) + 1, 16));
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for (EntityKey key : current)
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{
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if (!check.contains(key))
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{
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if (!key.getEntityName().startsWith("org.alfresco"))
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{
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System.out.println("Oops: " + key.getEntityName());
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}
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if(key.getEntityName().equals(QNameEntityImpl.class.getName()))
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{
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//System.out.println("Skipping: " + key.getEntityName());
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continue;
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}
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Object val = session.get(key.getEntityName(), key.getIdentifier());
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if (val != null)
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{
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toEvict.add(val);
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}
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}
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}
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for (Object evitee : toEvict)
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{
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session.evict(evitee);
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}
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String last;
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while ((last = getLastMarkOrNull()) != null)
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{
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if (!label.equals(last))
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{
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marks.remove(last);
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}
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else
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{
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if (remove)
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{
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marks.remove(last);
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}
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break;
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}
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}
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currentMark = getLastMarkOrNull();
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if (marks.size() == 0)
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{
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SessionSizeResourceManager.setEnableInTransaction();
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}
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//System.out.println("Removed "+marks.size()+" "+label);
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}
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}
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private String getLastMarkOrNull()
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{
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String mark = null;
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for (String key : marks.keySet())
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{
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mark = key;
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}
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return mark;
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}
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}
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