flex序列化

2. Flex前臺
2.1 加載數據：通過HTTPService從後臺加載XML數據，這裏將當前子網的ID傳給了後臺。數據獲取後，通過SerializeAdapter.deserialize方法將XML數據反序列化。爲了實現延遲加載，這裏在network上添加了Interaction事件監聽。

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network.addInteractionListener(function(e:InteractionEvent):void {
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if (e.kind == InteractionEvent.ENTER_SUBNETWORK) {
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if (network.currentSubNetwork.getClient("LOADED") != "true") {
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loadCurrentSubnetwork();
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network.currentSubNetwork.setClient("LOADED", "true");
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}
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}
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});
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private function loadCurrentSubnetwork():void{
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var service:HTTPService = new HTTPService();
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service.resultFormat = "e4x";
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service.url = URL;
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service.addEventListener("result", function(e:*):void{
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if(e.result != null){
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serializer.deserialize(e.result, network.currentSubNetwork);
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}
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});
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service.addEventListener("fault", function(e:*):void{
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trace(e);
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});
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var params:Object = new Object();
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if(network.currentSubNetwork != null){
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params.currentSubNetwork = network.currentSubNetwork.id.toString();
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}
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service.send(params);
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}
2.2 保存數據：通過SerializeAdapter.serialize方法將Topo數據序列化成XML數據，用HTTPService保存XML數據，這裏將當前子網的ID傳給了後臺。通過SerializeAdapter.filterFunction，可以過濾非當前子網的網元。

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serializer.filterFunction = function(data:IData):Boolean {
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return Utils.getSubNetwork(data as IElement) == network.currentSubNetwork;
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};
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private function saveCurrentSubnetwork():void{
var service:HTTPService = new HTTPService();
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service.resultFormat = "e4x";
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service.url = URL;
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service.addEventListener("fault", function(e:*):void{
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trace(e);
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});
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var params:Object = new Object();
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params.action = "save";
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if(network.currentSubNetwork != null){
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params.currentSubNetwork = network.currentSubNetwork.id.toString();
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}
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params.topoXml = encodeURIComponent(serializer.serialize());
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service.send(params);
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}
2.3 默認只序列化TWaver提供的默認網元，比如Node、Link等。如果要序列化從TWaver基類繼承的自定義類，需要添加如下代碼：

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//註冊自定義類
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SerializeAdapterSetting.registerGlobalClass("CNode", FlexNode);
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//註冊自定義屬性
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SerializeAdapterSetting.registerGlobalProperty("customProperty", Consts.TYPE_STRING, true);
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//註冊自定義Client屬性
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SerializeAdapterSetting.registerGlobalClient(FlexNode.CUSTOM_CLIENT, Consts.TYPE_STRING);
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//註冊序列化方法
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SerializeAdapterSetting.registerGlobalXMLSerializeFunction(FlexNode,
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function(serializer:SerializeAdapter, instance:Object, newInstance:Object):void{
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serializer.serializeProperty(instance, "customProperty", newInstance);
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});