com.exadel.flamingo.flex.messaging.amf.io.util.DefaultClassGetter.java Source code

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Here is the source code for com.exadel.flamingo.flex.messaging.amf.io.util.DefaultClassGetter.java

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/*
  GRANITE DATA SERVICES
  Copyright (C) 2007 ADEQUATE SYSTEMS SARL
    
  This file is part of Granite Data Services.
    
  Granite Data Services 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 3 of the License, or (at your
  option) any later version.
     
  Granite Data Services 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 library; if not, see <http://www.gnu.org/licenses/>.
*/

package com.exadel.flamingo.flex.messaging.amf.io.util;

import java.lang.reflect.Proxy;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * @author Franck WOLFF
 */
public class DefaultClassGetter implements ClassGetter {

    private static final Log log = LogFactory.getLog(DefaultClassGetter.class);

    /**
     * Returns the runtime class of this {@code Object}. If Object is "proxy" then method
     * returns class of object which is wrapped by this "proxy".
     * 
     * @param o Object
     * @return The {@code Class} object that represents the runtime
     *         class of this object.
     */
    public Class<?> getClass(Object o) {
        if (o == null)
            return null;

        return extractFromProxy(o.getClass());
    }

    protected Class<?> extractFromProxy(Class<?> clazz) {
        if (Proxy.isProxyClass(clazz)) {
            clazz = extractFromProxy(clazz.getInterfaces()[0]);
        } else {
            try {
                if (Class.forName("javassist.util.proxy.ProxyObject").isAssignableFrom(clazz)) {
                    clazz = extractFromProxy(clazz.getSuperclass());
                }
            } catch (ClassNotFoundException ex) {
                if (log.isDebugEnabled())
                    log.debug("Class javassist.util.proxy.ProxyObject can not be located");
            }
        }
        return clazz;
    }
}