/*
* JBoss, Home of Professional Open Source
* Copyright 2009 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This 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 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.infinispan.container.entries;
import org.infinispan.io.UnsignedNumeric;
import org.infinispan.marshall.AbstractExternalizer;
import org.infinispan.marshall.Ids;
import org.infinispan.util.Util;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Set;
/**
* A cache entry that is mortal. I.e., has a lifespan.
*
* @author Manik Surtani
* @since 4.0
*/
public class MortalCacheEntry extends AbstractInternalCacheEntry {
protected MortalCacheValue cacheValue;
protected MortalCacheEntry(Object key, MortalCacheValue cacheValue) {
super(key);
this.cacheValue = cacheValue;
}
@Override
public Object getValue() {
return cacheValue.value;
}
@Override
public Object setValue(Object value) {
return cacheValue.setValue(value);
}
public MortalCacheEntry(Object key, Object value, long lifespan) {
this(key, value, lifespan, System.currentTimeMillis());
}
public MortalCacheEntry(Object key, Object value, long lifespan, long created) {
super(key);
cacheValue = new MortalCacheValue(value, created, lifespan);
}
@Override
public final boolean isExpired(long now) {
return ExpiryHelper.isExpiredMortal(cacheValue.lifespan, cacheValue.created, now);
}
@Override
public final boolean isExpired() {
return ExpiryHelper.isExpiredMortal(cacheValue.lifespan, cacheValue.created);
}
@Override
public final boolean canExpire() {
return true;
}
@Override
public void setLifespan(long lifespan) {
cacheValue.setLifespan(lifespan);
}
@Override
public final long getCreated() {
return cacheValue.created;
}
@Override
public final long getLastUsed() {
return -1;
}
@Override
public final long getLifespan() {
return cacheValue.lifespan;
}
@Override
public final long getMaxIdle() {
return -1;
}
@Override
public final long getExpiryTime() {
return cacheValue.lifespan > -1 ? cacheValue.created + cacheValue.lifespan : -1;
}
@Override
public final void touch() {
// no-op
}
@Override
public final void touch(long currentTimeMillis) {
// no-op
}
@Override
public final void reincarnate() {
cacheValue.created = System.currentTimeMillis();
}
@Override
public InternalCacheValue toInternalCacheValue() {
return cacheValue;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
MortalCacheEntry that = (MortalCacheEntry) o;
if (key != null ? !key.equals(that.key) : that.key != null) return false;
if (cacheValue.value != null ? !cacheValue.value.equals(that.cacheValue.value) : that.cacheValue.value != null)
return false;
if (cacheValue.created != that.cacheValue.created) return false;
return cacheValue.lifespan == that.cacheValue.lifespan;
}
@Override
public int hashCode() {
int result = key != null ? key.hashCode() : 0;
result = 31 * result + (cacheValue.value != null ? cacheValue.value.hashCode() : 0);
result = 31 * result + (int) (cacheValue.created ^ (cacheValue.created >>> 32));
result = 31 * result + (int) (cacheValue.lifespan ^ (cacheValue.lifespan >>> 32));
return result;
}
@Override
public MortalCacheEntry clone() {
MortalCacheEntry clone = (MortalCacheEntry) super.clone();
clone.cacheValue = cacheValue.clone();
return clone;
}
public static class Externalizer extends AbstractExternalizer<MortalCacheEntry> {
@Override
public void writeObject(ObjectOutput output, MortalCacheEntry mce) throws IOException {
output.writeObject(mce.key);
output.writeObject(mce.cacheValue.value);
UnsignedNumeric.writeUnsignedLong(output, mce.cacheValue.created);
output.writeLong(mce.cacheValue.lifespan); // could be negative so should not use unsigned longs
}
@Override
public MortalCacheEntry readObject(ObjectInput input) throws IOException, ClassNotFoundException {
Object k = input.readObject();
Object v = input.readObject();
long created = UnsignedNumeric.readUnsignedLong(input);
Long lifespan = input.readLong();
return new MortalCacheEntry(k, v, lifespan, created);
}
@Override
public Integer getId() {
return Ids.MORTAL_ENTRY;
}
@Override
public Set<Class<? extends MortalCacheEntry>> getTypeClasses() {
return Util.<Class<? extends MortalCacheEntry>>asSet(MortalCacheEntry.class);
}
}
@Override
public String toString() {
return "MortalCacheEntry{" +
"key=" + key +
", value=" + cacheValue +
"}";
}
}