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* as indicated by the @author tags. See the copyright.txt file 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.commands.write;
import org.infinispan.atomic.Delta;
import org.infinispan.atomic.DeltaAware;
import org.infinispan.commands.Visitor;
import org.infinispan.container.entries.MVCCEntry;
import org.infinispan.context.InvocationContext;
import org.infinispan.marshall.Ids;
import org.infinispan.marshall.Marshallable;
import org.infinispan.marshall.exts.ReplicableCommandExternalizer;
import org.infinispan.notifications.cachelistener.CacheNotifier;
/**
* Implements functionality defined by {@link org.infinispan.Cache#put(Object, Object)}
*
* @author Mircea.Markus@jboss.com
* @since 4.0
*/
@Marshallable(externalizer = ReplicableCommandExternalizer.class, id = Ids.PUT_KEY_VALUE_COMMAND)
public class PutKeyValueCommand extends AbstractDataWriteCommand {
public static final byte COMMAND_ID = 8;
Object value;
boolean putIfAbsent;
CacheNotifier notifier;
boolean successful = true;
long lifespanMillis = -1;
long maxIdleTimeMillis = -1;
public PutKeyValueCommand() {
}
public PutKeyValueCommand(Object key, Object value, boolean putIfAbsent, CacheNotifier notifier, long lifespanMillis, long maxIdleTimeMillis) {
super(key);
this.value = value;
this.putIfAbsent = putIfAbsent;
this.notifier = notifier;
this.lifespanMillis = lifespanMillis;
this.maxIdleTimeMillis = maxIdleTimeMillis;
}
public void init(CacheNotifier notifier) {
this.notifier = notifier;
}
public Object getValue() {
return value;
}
public void setValue(Object value) {
this.value = value;
}
public Object acceptVisitor(InvocationContext ctx, Visitor visitor) throws Throwable {
return visitor.visitPutKeyValueCommand(ctx, this);
}
public Object perform(InvocationContext ctx) throws Throwable {
Object o;
MVCCEntry e = (MVCCEntry) ctx.lookupEntry(key);
Object entryValue = e.getValue();
if (entryValue != null && putIfAbsent && !e.isRemoved()) {
successful = false;
return entryValue;
} else {
notifier.notifyCacheEntryModified(key, entryValue, true, ctx);
if (value instanceof Delta) {
// magic
Delta dv = (Delta) value;
DeltaAware toMergeWith = null;
if (entryValue instanceof DeltaAware) toMergeWith = (DeltaAware) entryValue;
e.setValue(dv.merge(toMergeWith));
o = entryValue;
e.setLifespan(lifespanMillis);
e.setMaxIdle(maxIdleTimeMillis);
} else {
o = e.setValue(value);
if (e.isRemoved()) {
e.setRemoved(false);
e.setValid(true);
o = null;
}
e.setLifespan(lifespanMillis);
e.setMaxIdle(maxIdleTimeMillis);
}
notifier.notifyCacheEntryModified(key, e.getValue(), false, ctx);
}
return o;
}
public byte getCommandId() {
return COMMAND_ID;
}
public Object[] getParameters() {
return new Object[]{key, value, lifespanMillis, maxIdleTimeMillis};
}
public void setParameters(int commandId, Object[] parameters) {
if (commandId != COMMAND_ID) throw new IllegalStateException("Invalid method id");
key = parameters[0];
value = parameters[1];
lifespanMillis = (Long) parameters[2];
maxIdleTimeMillis = (Long) parameters[3];
}
public boolean isPutIfAbsent() {
return putIfAbsent;
}
public void setPutIfAbsent(boolean putIfAbsent) {
this.putIfAbsent = putIfAbsent;
}
public long getLifespanMillis() {
return lifespanMillis;
}
public long getMaxIdleTimeMillis() {
return maxIdleTimeMillis;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
if (!super.equals(o)) return false;
PutKeyValueCommand that = (PutKeyValueCommand) o;
if (lifespanMillis != that.lifespanMillis) return false;
if (maxIdleTimeMillis != that.maxIdleTimeMillis) return false;
if (putIfAbsent != that.putIfAbsent) return false;
if (value != null ? !value.equals(that.value) : that.value != null) return false;
return true;
}
@Override
public int hashCode() {
int result = super.hashCode();
result = 31 * result + (value != null ? value.hashCode() : 0);
result = 31 * result + (putIfAbsent ? 1 : 0);
result = 31 * result + (int) (lifespanMillis ^ (lifespanMillis >>> 32));
result = 31 * result + (int) (maxIdleTimeMillis ^ (maxIdleTimeMillis >>> 32));
return result;
}
@Override
public String toString() {
return new StringBuilder()
.append("PutKeyValueCommand{")
.append("key=").append(key)
.append(", value=").append(value)
.append(", putIfAbsent=").append(putIfAbsent)
.append(", lifespanMillis=").append(lifespanMillis)
.append(", maxIdleTimeMillis=").append(maxIdleTimeMillis)
.append("}")
.toString();
}
public boolean isSuccessful() {
return successful;
}
public boolean isConditional() {
return putIfAbsent;
}
}