Hi Alex,
Thanks for the reply but I am using [RemoteClass] metadata:
[RemoteClass(alias="ResultObj")]
public class ResultObj implements IExternalizable
Is there something else I should be using in the above line?
Many thanks,
Ash
--- In [email protected], "Alex Harui" <[EMAIL PROTECTED]> wrote:
>
> Use [RemoteClass] metdata instead
>
>
>
> ________________________________
>
> From: [email protected] [mailto:[EMAIL PROTECTED] On
> Behalf Of ash4os
> Sent: Saturday, July 05, 2008 11:17 PM
> To: [email protected]
> Subject: [flexcoders] Problem with IExternalizable
>
>
>
> Hi everyone,
>
> I am relatively new at Flex and am having writing a sample using the
> IExternalizable interface. I have a Java object on the server side that
> I want to send to the Flash player. I have searched through the older
> posts on this group and on various other blog posts but not much help.
> Here is the sample code: (sorry if it is a bit long)
>
> >>>>>>>>>>>>>>>>>>>>>>>>>>>> File: ResultObj.as
> package
> {
> import flash.utils.IDataInput;
> import flash.utils.IDataOutput;
> import flash.utils.IExternalizable;
>
> [RemoteClass(alias="ResultObj")]
> public class ResultObj implements IExternalizable
> {
> // number of records
> &n! bsp; public var m_numRecords:int;
> // view name
> public var m_viewName:String;
>
> public function ResultObj()
> { }
>
> public function readExternal (input:IDataInput):void
> {
> m_viewName = input.readObject();
> m_numRecords = input.readInt();
> }
>
> public function writeExternal (output:IDataOutput):void
> ! ; {
> ! ; output.writeObject(m_viewName);
> output.writeInt(m_numRecords);
> }
> }
> }
>
> >>>>>>>>>>>>>>>>>>>>>>>>>>>> File: main.mxml
> <?xml version="1.0" encoding="utf-8"?>
> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";
> layout="absolute">
>
> <mx:RemoteObject id="ViewObj" destination="ViewRemoteObject">
> <mx:method name="foo">
> <mx:arguments>
> <Arg1>
> rowId
> </Arg1>
> <Arg2>
> numRows
> </Arg2>
> </mx:arguments>
> </mx:method>
>
> <mx! :method name="getResults">
> <mx:arguments>
> <Arg1>
> accRowId
> </Arg1>
> <Arg2>
> numRows
> </Arg2>
> </mx:arguments>
> </mx:method>
> </mx:RemoteObject>
>
>
> <mx:Script>
> <![CDATA[
> import mx.rpc.remoting.mxml.RemoteObject;
> import mx.rpc.events.ResultEvent;
> import ResultObj;!
>
> &nbs! p; ;
> // create a compile time dependency on ResultObj class
> private static const REG:* =
> registerClassAlias("ResultObj",ResultObj);
> private var m_ResultObj:ResultObj;
>
> private function getList(event:Event):void {
> ViewObj.addEventListener(ResultEvent.RESULT,
> displayResponse);
> ViewObj.addEventListener(FaultEvent.FAULT, displayFault);
> ViewObj.getResults(AccountId.text, 1);
> registerClassAlias("ResultObj", ResultObj);
> &n! bsp; }
>
> private function displayResponse(resEvt:ResultEvent):void {
> Alert.show("displayReponse called, " + resEvt.toString());
> m_ResultObj = resEvt.result as ResultObj;
> }
>
> private function displayFault(resEvt:Event):void {
> Alert.show("displayFault called, " + resEvt.toString());
> }
> ]]>
> </mx:Script>
>
> <mx:WipeLeft id="myWL" duration="500"/>
>
> <mx:Panel width="617" height="608" layout="absolute" left=! "10"
> top="10" title="Account Detail" id="AcctOptView">
> &! nbsp;&nb sp; <mx:VDividedBox x="10" y="0" height="480"
> width="577">
> <mx:Canvas label="AccountsCanvas" width="100%" height="100%"
> backgroundColor="#FFFFCC">
>
> <mx:Form x="10" y="10" width="557" height="215" >
> <mx:FormHeading label="Enter Account Details"
> width="304" />
>
> <mx:FormItem label="Account Name">
> <mx:TextInp! ut id="AccountName" width="200"
> text=""/>
> </mx:FormItem>
> <mx:FormItem label="Account Id">
> <mx:TextInput id="AccountId" width="100"/>
> </mx:FormItem>
> <mx:FormItem label="Primary Contact">
> <mx:TextInput id="PrimaryContact" width="200" />
> &nb! sp; </mx:FormItem>
> &nb! sp; ;
> <mx:Button label="GetAccounts"
> click="getList(event)" id="GetAccounts"/>
> </mx:Form>
>
> </mx:Canvas>
> <mx:Canvas label="Canvas 1" width="100%" height="100%"
> backgroundColor="#FFFFCC">
>
> </mx:Canvas>
> </mx:VDividedBox>
> </mx:Panel>
> </mx:Application>
>
> And I have the following in the remoting-config.xml
> <! ;destination id="ViewRemoteObject">
> <properties>
> <source>MyView</source>
> </properties>
> </destination>
>
> On the Java side I have following source code:
>
> >>>>>>>>>>>>>>>>>>>>>>>>>>>MyView.java
> public class MyView {
>
> public MyView () {
> }
>
> public ResultObj getResults (String viewName, int numRecords) {
> ResultObj res = new ResultObj ();
>
> return (res);
> }
> }
>
> >>>>>>>>>>>>>>>>>>>>>>>>>>> ResultObj.java
> public class ResultObj implements Externalizable {
> ! private String m_! viewName ;
> private Integer m_numRecords;
>
> public ResultObj() {
> m_numRecords = new Integer (0);
> m_viewName = new String ("Dummy Default View");
> }
>
> /*
> * (non-Javadoc)
> * @see java.io.Externalizable#readExternal(java.io.ObjectInput)
> */
> public void readExternal (ObjectInput in)
> throws IOException, ClassNotFoundException
> {
> m_viewName = (String) in.readObject();
> m_numRecords = in.readInt();
> }
>
> /* * (non-Javadoc)
> * @see java.io.Externalizable#writeExternal(java.io.ObjectOutput)
> *
> * Serializes the server state of an instance of ResultObj
> * to the AMF client (Flash in the browser)
> */
> public void writeExternal (ObjectOutput out) throws IOException {
> System.err.println("[ResultObj::writeExternal]");
> out.writeObject(m_viewName);
> out.writeInt(m_numRecords);
> System.err.println("Completed [ResultObj::writeExternal]");
> }
> }
>
> Both the Java files are compiled and put under
> D:\lcds\jrun4\servers\default\flex\WEB-INF\classe! s. I debugged this
> more and the method MyView::getResults is b! eing inv oked and the
> method ResultObj::writeExternal also gets invoked successfully but on
> the browser side I get the following error
>
> ArgumentError: Error #2004: One of the parameters is invalid.
>
> And then I get the following error:
>
> displayFault called, [FaultEvent fault=[RPC Fault faultString="Didn't
> receive an acknowledge message" faultCode="Server.Acknowledge.Failed"
> faultDetail="Was expecting mx.messaging.messages.AcknowledgeMessage, but
> received null"] messageId="CEE768B6-6010-738A-C432-5C83918438BE"
> type="fault" bubbles=false cancelable=true eventPhase=2]
>
> So I am guessing the browser side doesn't know to construct the object
> ResultObj.as. If anyone can shed some light on how to fix it that would
> be very much appreciated.
>
> Many thanks,
> Ash
>
