Alan Davis fa4d74fa5b Merged HEAD-BUG-FIX (5.0/Cloud) to HEAD (5.0/Cloud)
84033: Merged V4.2-BUG-FIX (4.2.4) to HEAD-BUG-FIX (5.0/Cloud)
      83385: MNT-12297: TransactionalCache equality checks lead to false negatives in a cluster
       - TransactionalCache uses ValueHolder to store values put into the cache.
       - Each ValueHolder will have a new random integer to distinguish it from the next
       - TransactionalCache equality checks no longer use reference equality and instead
         use the ValueHolder.equals() method for most cases.  This actual client value
         .equals() is used where 'allowEquals' is true.
       - Immutable caches always assume the backing cache is correct, still.
      83391: Fix test doing checks in low-level cache (r83385 MNT-12297)


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@84621 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
2014-09-18 17:21:11 +00:00

125 lines
3.3 KiB
Java

/*
* Copyright (C) 2005-2014 Alfresco Software Limited.
*
* This file is part of Alfresco
*
* Alfresco is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Alfresco is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
*/
package org.alfresco.repo.cache;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Collection;
import org.springframework.beans.factory.BeanNameAware;
/**
* {@link SimpleCache} implementation backed by a {@link DefaultSimpleCache} but forcing
* object serialization in and out. This is only useful for tests.
*
* @author Derek Hulley
* @since 4.2.3
*/
public final class SerializingSimpleCache<K extends Serializable, V extends Serializable>
implements SimpleCache<K, V>, BeanNameAware
{
private SimpleCache<K, V> cache;
public SerializingSimpleCache(int maxItems, String cacheName)
{
cache = new DefaultSimpleCache<>(maxItems, cacheName);
}
public SerializingSimpleCache()
{
cache = new DefaultSimpleCache<>();
}
@SuppressWarnings("unchecked")
private V serialize(V value)
{
if (value == null)
{
return null;
}
try
{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bos);
oos.writeObject(value);
byte[] bytes = bos.toByteArray();
ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
ObjectInputStream ois = new ObjectInputStream(bis);
V ret = (V) ois.readObject();
// This is just test code!
bos.close();
oos.close();
bis.close();
ois.close();
// Done
return ret;
}
catch (Exception e)
{
throw new RuntimeException("Failure to serialize/deserialize object: " + value, e);
}
}
@Override
public boolean contains(K key)
{
return cache.contains(key);
}
@Override
public Collection<K> getKeys()
{
return cache.getKeys();
}
@Override
public V get(K key)
{
V ret = cache.get(key);
return serialize(ret);
}
@Override
public void put(K key, V value)
{
value = serialize(value);
cache.put(key, value);
}
@Override
public void remove(K key)
{
cache.remove(key);
}
@Override
public void clear()
{
cache.clear();
}
@Override
public void setBeanName(String cacheName)
{
}
}