Java tutorial
/* * RHQ Management Platform * Copyright (C) 2005-2010 Red Hat, Inc. * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation version 2 of the License. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ package org.rhq.coregui.server.util; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.ObjectOutputStream; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.rhq.enterprise.server.safeinvoker.HibernateDetachUtility; /** * @author Greg Hinkle */ public class SerialUtility { private static Log log = LogFactory.getLog(SerialUtility.class); public static <T> T prepare(T value, String message) throws Exception { long start = System.currentTimeMillis(); HibernateDetachUtility.nullOutUninitializedFields(value, HibernateDetachUtility.SerializationType.SERIALIZATION); if (log.isDebugEnabled()) { log.debug("SerialUtility.prepare [" + message + "] Detached in: " + (System.currentTimeMillis() - start) + "ms, Size is: " + serialSize(value)); } return value; } public static int serialSize(Object value) { try { ByteArrayOutputStream baos = new ByteArrayOutputStream(50000); ObjectOutputStream o = new ObjectOutputStream(baos); o.writeObject(value); o.flush(); return baos.size(); } catch (IOException e) { e.printStackTrace(); return -1; } } }