burlapserializerfactory.java

AJAX的一个好东西哦,国人的一个AJAX的实现不错的东西

/*
 * Copyright (c) 2001-2003 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
 *    [e-mail].
 *
 * 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 net.buffalo.service.invoker.burlap;

import java.io.IOException;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import com.caucho.burlap.io.AbstractBurlapInput;
import com.caucho.burlap.io.ArrayDeserializer;
import com.caucho.burlap.io.ArraySerializer;
import com.caucho.burlap.io.BasicDeserializer;
import com.caucho.burlap.io.BasicSerializer;
import com.caucho.burlap.io.BurlapProtocolException;
import com.caucho.burlap.io.BurlapRemoteObject;
import com.caucho.burlap.io.ClassDeserializer;
import com.caucho.burlap.io.ClassSerializer;
import com.caucho.burlap.io.CollectionDeserializer;
import com.caucho.burlap.io.CollectionSerializer;
import com.caucho.burlap.io.Deserializer;
import com.caucho.burlap.io.JavaDeserializer;
import com.caucho.burlap.io.JavaSerializer;
import com.caucho.burlap.io.MapDeserializer;
import com.caucho.burlap.io.MapSerializer;
import com.caucho.burlap.io.RemoteSerializer;
import com.caucho.burlap.io.Serializer;
import com.caucho.burlap.io.SerializerFactory;
import com.caucho.burlap.io.SqlDateDeserializer;
import com.caucho.burlap.io.StackTraceElementDeserializer;
import com.caucho.burlap.io.StringValueDeserializer;
import com.caucho.burlap.io.StringValueSerializer;

/**
 * Factory for returning serialization methods.
 * 
 * Note: this is a 'patched' version of the burlap's SerializerFactory, I do
 * this just for the resin app server.
 */

public class BurlapSerializerFactory extends SerializerFactory {
	
	private static HashMap serializerMap;

	private static HashMap deserializerMap;

	private static HashMap typeMap;

	private Serializer defaultSerializer;

	/**
	 * Returns the serializer for a class.
	 * 
	 * @param cl
	 *            the class of the object that needs to be serialized.
	 * 
	 * @return a serializer object which is do the serialization.
	 */
	public Serializer getSerializer(Class cl) throws BurlapProtocolException {
		Serializer serializer;

		serializer = (Serializer) serializerMap.get(cl);
		if (serializer != null)
			return serializer;

		if (BurlapRemoteObject.class.isAssignableFrom(cl))
			return new RemoteSerializer();

		if (Map.class.isAssignableFrom(cl))
			return new MapSerializer();

		if (Collection.class.isAssignableFrom(cl))
			return new CollectionSerializer();

		if (cl.isArray())
			return new ArraySerializer();

		return getDefaultSerializer(cl);
	}

	public Serializer getDefaultSerializer(Class cl) {
		if (defaultSerializer == null)
			defaultSerializer = new JavaSerializer();

		return defaultSerializer;
	}

	public Deserializer getDeserializer(Class cl)
			throws BurlapProtocolException {
		Deserializer deserializer;

		deserializer = (Deserializer) deserializerMap.get(cl);
		if (deserializer != null)
			return deserializer;

		if (cl == null || Object.class.equals(cl))
			return new MapDeserializer(null);

		if (Collection.class.isAssignableFrom(cl))
			return new CollectionDeserializer(cl);

		if (Map.class.isAssignableFrom(cl))
			return new MapDeserializer(cl);

		if (cl.isArray()) {
			return new ArrayDeserializer(getDeserializer(cl.getComponentType()));
		}

		return new JavaDeserializer(cl);
	}

	public Object readList(AbstractBurlapInput in, int length, String type)
			throws BurlapProtocolException, IOException {
		Deserializer deserializer = getDeserializer(type);

		if (deserializer != null)
			return deserializer.readList(in, length);
		else
			return new CollectionDeserializer(ArrayList.class).readList(in,
					length);
	}

	public Object readMap(AbstractBurlapInput in, String type)
			throws BurlapProtocolException, IOException {
		Deserializer deserializer = getDeserializer(type);

		if (deserializer != null)
			return deserializer.readMap(in);
		else
			return new MapDeserializer(HashMap.class).readMap(in);
	}

	public Deserializer getObjectDeserializer(String type)
			throws BurlapProtocolException {
		Deserializer deserializer = getDeserializer(type);

		if (deserializer != null)
			return deserializer;
		else
			return new MapDeserializer(HashMap.class);
	}

	public Deserializer getDeserializer(String type)
			throws BurlapProtocolException {
		if (type == null || type.equals(""))
			return null;

		Deserializer deserializer;

		deserializer = (Deserializer) typeMap.get(type);
		if (deserializer != null) {
			return deserializer;
		}

		if (type.startsWith("[")) {
			Deserializer subDeserializer = getDeserializer(type.substring(1));
			return new ArrayDeserializer(subDeserializer);
		}

		try {
			ClassLoader loader = Thread.currentThread().getContextClassLoader();

			Class cl = Class.forName(type, false, loader);

			return getDeserializer(cl);
		} catch (Exception e) {
		}

		return null;
	}

	private static void addBasic(Class cl, String typeName, int type) {
		serializerMap.put(cl, new BasicSerializer(type));

		Deserializer deserializer = new BasicDeserializer(type);
		deserializerMap.put(cl, deserializer);
		typeMap.put(typeName, deserializer);
	}

	static {
		serializerMap = new HashMap();
		deserializerMap = new HashMap();
		typeMap = new HashMap();

		addBasic(Boolean.class, "boolean", BasicSerializer.BOOLEAN);
		addBasic(Byte.class, "byte", BasicSerializer.BYTE);
		addBasic(Short.class, "short", BasicSerializer.SHORT);
		addBasic(Integer.class, "int", BasicSerializer.INTEGER);
		addBasic(Long.class, "long", BasicSerializer.LONG);
		addBasic(Float.class, "float", BasicSerializer.FLOAT);
		addBasic(Double.class, "double", BasicSerializer.DOUBLE);
		addBasic(Character.class, "char", BasicSerializer.CHARACTER);
		addBasic(String.class, "string", BasicSerializer.STRING);
		addBasic(java.util.Date.class, "date", BasicSerializer.DATE);

		addBasic(boolean.class, "boolean", BasicSerializer.BOOLEAN);
		addBasic(byte.class, "byte", BasicSerializer.BYTE);
		addBasic(short.class, "short", BasicSerializer.SHORT);
		addBasic(int.class, "int", BasicSerializer.INTEGER);
		addBasic(long.class, "long", BasicSerializer.LONG);
		addBasic(float.class, "float", BasicSerializer.FLOAT);
		addBasic(double.class, "double", BasicSerializer.DOUBLE);
		addBasic(char.class, "char", BasicSerializer.CHARACTER);

		addBasic(boolean[].class, "[boolean", BasicSerializer.BOOLEAN_ARRAY);
		addBasic(byte[].class, "[byte", BasicSerializer.BYTE_ARRAY);
		addBasic(short[].class, "[short", BasicSerializer.SHORT_ARRAY);
		addBasic(int[].class, "[int", BasicSerializer.INTEGER_ARRAY);
		addBasic(long[].class, "[long", BasicSerializer.LONG_ARRAY);
		addBasic(float[].class, "[float", BasicSerializer.FLOAT_ARRAY);
		addBasic(double[].class, "[double", BasicSerializer.DOUBLE_ARRAY);
		addBasic(char[].class, "[char", BasicSerializer.CHARACTER_ARRAY);
		addBasic(String[].class, "[string", BasicSerializer.STRING_ARRAY);
		addBasic(Object[].class, "[object", BasicSerializer.OBJECT_ARRAY);

		serializerMap.put(Class.class, new ClassSerializer());
		deserializerMap.put(Class.class, new ClassDeserializer());

		serializerMap.put(BigDecimal.class, new StringValueSerializer());
		try {
			deserializerMap.put(BigDecimal.class, new StringValueDeserializer(
					BigDecimal.class));
		} catch (Throwable e) {
			e.printStackTrace();
		}
		
		// Patched here
		serializerMap.put(java.sql.Date.class, new FixedSqlDateSerializer());
		serializerMap.put(java.sql.Time.class, new FixedSqlDateSerializer());
		serializerMap.put(java.sql.Timestamp.class, new FixedSqlDateSerializer());

		try {
			deserializerMap.put(java.sql.Date.class, new SqlDateDeserializer(
					java.sql.Date.class));
			deserializerMap.put(java.sql.Time.class, new SqlDateDeserializer(
					java.sql.Time.class));
			deserializerMap.put(java.sql.Timestamp.class,
					new SqlDateDeserializer(java.sql.Timestamp.class));
		} catch (Throwable e) {
			e.printStackTrace();
		}

		try {
			Class stackTrace = Class.forName("java.lang.StackTraceElement");

			deserializerMap
					.put(stackTrace, new StackTraceElementDeserializer());
		} catch (Throwable e) {
		}
	}
}