/*
* Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved.
*
* The Apache Software License, Version 1.1
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Caucho Technology (http://www.caucho.com/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "Burlap", "Resin", and "Caucho" must not be used to
* endorse or promote products derived from this software without prior
* written permission. For written permission, please contact
* info@caucho.com.
*
* 5. Products derived from this software may not be called "Resin"
* nor may "Resin" appear in their names without prior written
* permission of Caucho Technology.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @author Scott Ferguson
*/
package com.caucho.hessian4.io;
import java.io.IOException;
import java.util.logging.Logger;
import com.caucho.hessian4.HessianException;
/**
* Serializing an object.
*/
abstract public class AbstractSerializer implements Serializer {
public static final NullSerializer NULL = new NullSerializer();
protected static final Logger log
= Logger.getLogger(AbstractSerializer.class.getName());
public void writeObject(Object obj, AbstractHessianOutput out)
throws IOException
{
if (out.addRef(obj)) {
return;
}
try {
Object replace = writeReplace(obj);
if (replace != null) {
// out.removeRef(obj);
out.writeObject(replace);
out.replaceRef(replace, obj);
return;
}
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
// log.log(Level.FINE, e.toString(), e);
throw new HessianException(e);
}
Class<?> cl = getClass(obj);
int ref = out.writeObjectBegin(cl.getName());
if (ref < -1) {
writeObject10(obj, out);
}
else {
if (ref == -1) {
writeDefinition20(cl, out);
out.writeObjectBegin(cl.getName());
}
writeInstance(obj, out);
}
}
protected Object writeReplace(Object obj)
{
return null;
}
protected Class<?> getClass(Object obj)
{
return obj.getClass();
}
protected void writeObject10(Object obj,
AbstractHessianOutput out)
throws IOException
{
throw new UnsupportedOperationException(getClass().getName());
}
protected void writeDefinition20(Class<?> cl,
AbstractHessianOutput out)
throws IOException
{
throw new UnsupportedOperationException(getClass().getName());
}
protected void writeInstance(Object obj,
AbstractHessianOutput out)
throws IOException
{
throw new UnsupportedOperationException(getClass().getName());
}
/**
* The NullSerializer exists as a marker for the factory classes so
* they save a null result.
*/
static final class NullSerializer extends AbstractSerializer {
public void writeObject(Object obj, AbstractHessianOutput out)
throws IOException
{
throw new IllegalStateException(getClass().getName());
}
}
}