BlazeDS体系结构(四）

Java对象转换为AS对象
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// Product.as

package samples.externalizable {



import flash.utils.IExternalizable;

import flash.utils.IDataInput;

import flash.utils.IDataOutput;

[RemoteClass(alias="samples.externalizable.Product")]

public class Product implements IExternalizable {



public function Product(name:String=null) {

this.name = name;

}



public var id:int;

public var name:String;

public var properties:Object;

public var price:Number;



public function readExternal(input:IDataInput):void {

name = input.readObject() as String;

properties = input.readObject();

price = input.readFloat();

}



public function writeExternal(output:IDataOutput):void {

output.writeObject(name);

output.writeObject(properties);

output.writeFloat(price);

}

}

}





// Product.java

package samples.externalizable;

import java.io.Externalizable;

import java.io.IOException;

import java.io.ObjectInput;

import java.io.ObjectOutput;

import java.util.Map;



public class Product implements Externalizable {



private String inventoryId;

public String name;

public Map properties;

public float price;



public Product(){

}



public String getInventoryId() {

return inventoryId;

}



public void setInventoryId(String inventoryId) {

if (inventoryId != null && inventoryId.startsWith("X")){

this.inventoryId = inventoryId;

}else{

throw new IllegalArgumentException("3rd party product

inventory identities must start with 'X'");

}

}



public void readExternal(ObjectInput in) throws IOException,

ClassNotFoundException {

name = (String)in.readObject();

properties = (Map)in.readObject();

price = in.readFloat();

setInventoryId(lookupInventoryId(name, price));

}



public void writeExternal(ObjectOutput out) throws IOException {

// Write out the client properties from the server representation

out.writeObject(name);

out.writeObject(properties);

out.writeFloat(price);

}



private static String lookupInventoryId(String name, float price) {

String inventoryId = "X" + name + Math.rint(price);

return inventoryId;

}

}