/*
* JacORB - a free Java ORB
*
* Copyright (C) 1997-2014 Gerald Brose / The JacORB Team.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
package org.jacorb.orb.giop;
/**
* Class StatisticsProviderAdapter is responsible for managing
* the StatisticsProvider instances for collecting transport usage
* information.
*
* @author Iliyan Jeliazkov
*/
final class StatisticsProviderAdapter implements StatisticsProvider
{
private int cardinality_;
private StatisticsProvider head_;
private StatisticsProviderAdapter tail_;
public StatisticsProviderAdapter (StatisticsProvider p)
{
this (p, null);
}
public StatisticsProviderAdapter (StatisticsProvider head, StatisticsProviderAdapter tail)
{
this.head_ = head;
this.tail_ = tail;
this.cardinality_ = (tail == null) ? 0 : tail.cardinality_ + 1;
}
public StatisticsProvider find (int cardinality)
{
if (this.cardinality_ == cardinality)
return this.head_;
if (this.tail_ == null)
return null;
return this.tail_.find (cardinality);
}
public void messageChunkSent(int size) {
try {
if(head_ != null)
head_.messageChunkSent(size);
}
finally {
if(tail_ != null)
tail_.messageChunkSent(size);
}
}
public void flushed() {
try {
if(head_ != null)
head_.flushed();
}
finally {
if(tail_ != null)
tail_.flushed();
}
}
public void messageReceived(int size) {
try {
if(head_ != null)
head_.messageReceived(size);
}
finally {
if(tail_ != null)
tail_.messageReceived(size);
}
}
}