DefaultActionScriptClassDescriptor.java

/**
 *   GRANITE DATA SERVICES
 *   Copyright (C) 2006-2015 GRANITE DATA SERVICES S.A.S.
 *
 *   This file is part of the Granite Data Services Platform.
 *
 *   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 2.1 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, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 *   USA, or see <http://www.gnu.org/licenses/>.
 */
package org.granite.messaging.amf.io.util;

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.HashMap;

import org.granite.util.TypeUtil;
import org.granite.util.Introspector;
import org.granite.util.PropertyDescriptor;

/**
 * @author Franck WOLFF
 */
public class DefaultActionScriptClassDescriptor extends ActionScriptClassDescriptor {

	private final Class<?> clazz;
	
    public DefaultActionScriptClassDescriptor(String type, byte encoding) {
        super(type, encoding);
        
        this.clazz = forName(type, instantiator);
    }
    
    private static Class<?> forName(String name, String instantiator) {
    	if (name.length() == 0)
    		return HashMap.class;
    	
    	String className = (instantiator != null ? instantiator : name);
		try {
			return TypeUtil.forName(className);
		}
		catch (Throwable t) {
			throw new RuntimeException("Class not found: " + className);
		}
    }

    @Override
    public void defineProperty(String name) {

        if (type.length() == 0 || instantiator != null)
            properties.add(new MapProperty(converters, name));
        else {
            try {
                // Try to find public getter/setter.
                PropertyDescriptor[] props = Introspector.getPropertyDescriptors(clazz);
                for (PropertyDescriptor prop : props) {
                    if (name.equals(prop.getName()) && prop.getWriteMethod() != null && prop.getReadMethod() != null) {
                        properties.add(new MethodProperty(converters, name, prop.getWriteMethod(), prop.getReadMethod()));
                        return;
                    }
                }

                // Try to find public field.
                Field field = clazz.getField(name);
                if (!Modifier.isStatic(field.getModifiers()) && !Modifier.isTransient(field.getModifiers()))
                    properties.add(new FieldProperty(converters, field));

            }
            catch (NoSuchFieldException e) {
                if ("uid".equals(name)) // ObjectProxy specific property...
                    properties.add(new UIDProperty(converters));
                else
                	throw new RuntimeException(e);
            }
            catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
    }

    @Override
    public Object newJavaInstance() {
        if (clazz == HashMap.class)
            return new HashMap<String, Object>();
        
        try {
			return clazz.newInstance();
		}
        catch (Exception e) {
        	throw new RuntimeException("Could not create instance of: " + clazz.getName(), e);
		}
    }
}