Re: [flexcoders] how to de-serialize objects
Hello,
I have similar problem and im totally new to flex and cairngorm... here is
my code snippet:
im my java end:
ListUsers getAll() { // from hibernate dao then return result which
llist of users }
in AS files:
public class ListDelegate extends EventDispatcher
{
private var userService:RemoteObject;
private var responder:IResponder;
public function ListDelegate(responder:IResponder)
{
this.userService = new RemoteObject(userService);
this.responder = responder;
}
public function getUserList():void
{
var call : Object = userService.getAll();
call.addResponder( responder );
}
}
public class ListUserCommand extends BaseCommand
{
override protected function callDelegate():void
{
var listdelegate:ListDelegate = new ListDelegate(this);
listdelegate.getUserList();
}
override public function result( event : Object ) : void
{
this.modelHelper.onResultUser(event);
}
override public function fault( event : Object ) : void
{
var faultevt:FaultEvent = event as FaultEvent;
Alert.show(faultevt.fault.rootCause.toString());
}
}
public class ModelHelper
{
[Bindable]
public var userlist: UserList;
public function ModelHelper(userlist: UserList)
{
this.userlist = userlist;
}
public function getUserList():void
{
new ListUserEvent(this).dispatch();
}
public function onResultUser(event:Object):void
{
this.userlist.listusers = event.result as
ArrayCollection;
}
}
..and i use DataGrid to display datas:
?xml version=1.0 encoding=utf-8?
mx:VBox xmlns:mx=http://www.adobe.com/2006/mxml;
initialize=init()
creationComplete=loadAll()
mx:Script
![CDATA[
import com.test.flex.util.UserList;
import mx.rpc.events.ResultEvent;
import com.test.flex.model.ViewModelLocator;
import com.test.flex.events.ListUserEvent;
import com.test.flex.model.ModelHelper;
[Bindable]
private var modelLocator:ViewModelLocator =
ViewModelLocator.getInstance();
[Bindable]
public var modelHelper:ModelHelper;
[Bindable]
public var users:UserList;
public function init():void
{
this.users = new UserList();
this.modelHelper = new ModelHelper(users);
}
public function loadAll():void
{
this.modelHelper.getUserList();
}
]]
/mx:Script
!-- mx:Label text={modelLocator.test}/ --
mx:DataGrid id=userlist dataProvider={modelHelper.userlist.listusers}
mx:columns
mx:DataGridColumn headerText=ID dataField=id/
mx:DataGridColumn headerText=Username dataField=username/
mx:DataGridColumn headerText=Password dataField=password/
/mx:columns
/mx:DataGrid
mx:Button id=logout label=LogOut
click={modelLocator.modelWorkflowState = ViewModelLocator.LOGIN_SCREEN}/
/mx:VBox
..and the rest are straigthforward code. When I change the return value to
String it works fine nut when put it back to List it display nothing or
error i get but when i debug it i gets the results:
11:20:14,459 INFO [STDOUT] Hibernate: select this_.ID as ID1_0_,
this_.USERNAME as USERNAME1_0_, this_.PASSWORD as PASSWORD1_0_ from user
this_
11:20:14,464 INFO [STDOUT] [BlazeDS]12/02/2008 [DEBUG] [Service.Remoting]
Adapter 'java-object' called 'userService.getAll(java.util.Arrays$ArrayList
(Collection size:0)
)'
11:20:14,465 INFO [STDOUT] [BlazeDS]12/02/2008 [DEBUG] [Service.Remoting]
Result: 'java.util.ArrayList (Collection size:2)
[0] = com.test.flex.model.User
id = 1
username = eman
Re: [flexcoders] how to de-serialize objects -- SOLVED
finally figured this out...so the problem is with using a different constructor than the AS3 object...originally i passeed the params into the java object's constructor, but those values were null when they got to the client so i created accessor methods and called the default constructor and it worked...sheesh! p On Wed, Feb 20, 2008 at 11:28 AM, [p e r c e p t i c o n] [EMAIL PROTECTED] wrote: just noticed that the namespaces are different...would this matter? on the POJO it com.xxx.remoting, but on the AS3Object it just package... percy On Wed, Feb 20, 2008 at 10:12 AM, [p e r c e p t i c o n] [EMAIL PROTECTED] wrote: Hi Again, Ok...so by instantiating my class the Serialization took place and there are 99 elements of that type in the result...however the members of the class are all null, but i'm printing them to a file on the Java side so I know that there are values in each object...any ideas on why this is happening? thanks so much for all your input! percy
Re: [flexcoders] how to de-serialize objects
Hi, Firstly you need to map your AS objects to the Java objects (if you did this already, ignore). Here is the link to details on how to map. http://sujitreddyg.wordpress.com/2008/01/16/mapping-action-script-objects-to-java-objects/ to which component are you setting the dataprovider to? if it is DataGrid, can you make sure you have included the datafield properties properly. If it is to List or combobox, you have to set the label field property also. If all the above are done and still it is not working, please share some code snippets, which might help to debug the issue. Regards, Sujit Reddy G On Wed, Feb 20, 2008 at 11:03 AM, Peeyush Tuli [EMAIL PROTECTED] wrote: Are you sure about the code where you set the dataprovider to be 100% correct as I have never encountered such a scenario of no serialization. One quick recall i have is that flex was not able to de-serialize date types when used with a dotnet webservice, it rather takes them as a string. Can you let us know the communication mechanism you are using for this? ( webservices or remoting) Regarding a serializing utility, maybe this post can help you http://www.darronschall.com/weblog/archives/000247.cfm ~Peeyush On Feb 20, 2008 5:16 AM, [p e r c e p t i c o n] [EMAIL PROTECTED] wrote: hI experts, i've created a Java Object that returns an array list of items to my flex app...however even though I set the dataprovider attribute correctly none of the data actually renders...a quick glance at the data using the debugger shows that the objects are there so i think they'renot being deserialized properly...can anyone tell me how to achieve this? i've created the client side object in AS, but still not sure why it's not working... thanks p btw i'm using FB3 cheers -- Regards, Sujit Reddy. G
Re: [flexcoders] how to de-serialize objects
Sujit, I've done exactly as you have in this blog with the exception of returning one object at a time...instead i return a list of objects (in java List resultList = new ArrayList();) .. so i guess i need a way to deserialize the list on the Actionscript side is that the problem? yes...i'm using datagrid... Thanks! p On Feb 20, 2008 6:04 AM, Sujit Reddy [EMAIL PROTECTED] wrote: Hi, Firstly you need to map your AS objects to the Java objects (if you did this already, ignore). Here is the link to details on how to map. http://sujitreddyg.wordpress.com/2008/01/16/mapping-action-script-objects-to-java-objects/ to which component are you setting the dataprovider to? if it is DataGrid, can you make sure you have included the datafield properties properly. If it is to List or combobox, you have to set the label field property also. If all the above are done and still it is not working, please share some code snippets, which might help to debug the issue. Regards, Sujit Reddy G On Wed, Feb 20, 2008 at 11:03 AM, Peeyush Tuli [EMAIL PROTECTED] wrote: Are you sure about the code where you set the dataprovider to be 100% correct as I have never encountered such a scenario of no serialization. One quick recall i have is that flex was not able to de-serialize date types when used with a dotnet webservice, it rather takes them as a string. Can you let us know the communication mechanism you are using for this? ( webservices or remoting) Regarding a serializing utility, maybe this post can help you http://www.darronschall.com/weblog/archives/000247.cfm ~Peeyush On Feb 20, 2008 5:16 AM, [p e r c e p t i c o n] [EMAIL PROTECTED] wrote: hI experts, i've created a Java Object that returns an array list of items to my flex app...however even though I set the dataprovider attribute correctly none of the data actually renders...a quick glance at the data using the debugger shows that the objects are there so i think they'renot being deserialized properly...can anyone tell me how to achieve this? i've created the client side object in AS, but still not sure why it's not working... thanks p btw i'm using FB3 cheers -- Regards, Sujit Reddy. G
Re: [flexcoders] how to de-serialize objects
Peeyush, I'm using remoting (RemoteObject) with a j2ee back-end... it rather takes them as a string. hmmm...this actually sheds some light on things...i'm not returning the actual object but rather a list of objects.. thanks p On Feb 19, 2008 9:33 PM, Peeyush Tuli [EMAIL PROTECTED] wrote: Are you sure about the code where you set the dataprovider to be 100% correct as I have never encountered such a scenario of no serialization. One quick recall i have is that flex was not able to de-serialize date types when used with a dotnet webservice, it rather takes them as a string. Can you let us know the communication mechanism you are using for this? ( webservices or remoting) Regarding a serializing utility, maybe this post can help you http://www.darronschall.com/weblog/archives/000247.cfm ~Peeyush On Feb 20, 2008 5:16 AM, [p e r c e p t i c o n] [EMAIL PROTECTED] wrote: hI experts, i've created a Java Object that returns an array list of items to my flex app...however even though I set the dataprovider attribute correctly none of the data actually renders...a quick glance at the data using the debugger shows that the objects are there so i think they'renot being deserialized properly...can anyone tell me how to achieve this? i've created the client side object in AS, but still not sure why it's not working... thanks p btw i'm using FB3 cheers
Re: [flexcoders] how to de-serialize objects
Hi Again, Ok...so by instantiating my class the Serialization took place and there are 99 elements of that type in the result...however the members of the class are all null, but i'm printing them to a file on the Java side so I know that there are values in each object...any ideas on why this is happening? thanks so much for all your input! percy
Re: [flexcoders] how to de-serialize objects
just noticed that the namespaces are different...would this matter? on the POJO it com.xxx.remoting, but on the AS3Object it just package... percy On Wed, Feb 20, 2008 at 10:12 AM, [p e r c e p t i c o n] [EMAIL PROTECTED] wrote: Hi Again, Ok...so by instantiating my class the Serialization took place and there are 99 elements of that type in the result...however the members of the class are all null, but i'm printing them to a file on the Java side so I know that there are values in each object...any ideas on why this is happening? thanks so much for all your input! percy
Re: [flexcoders] how to de-serialize objects
If you are mapping the AS object to the Java class using the RemoteClass metatag, that will do the work. just make sure the name of the Java class in the RemoteClass metatag has the fully qualified name i.e. com.xxx.remoting .classname You need not de-serialize the arraylist, if the mapped objects are passed in the ArrayList from Java, you get them as the objects in ArrayCollection in AS. did you include the reference to the AS object mapped to the Java object in you main application file? if a reference of AS object is not included in the main application file, then that class definition will not be available during runtime. If any of the above suggestions are not helping you, share few code snippets from your application, we can try to debug the problem. Regards, Sujit Reddy G On Thu, Feb 21, 2008 at 12:58 AM, [p e r c e p t i c o n] [EMAIL PROTECTED] wrote: just noticed that the namespaces are different...would this matter? on the POJO it com.xxx.remoting, but on the AS3Object it just package... percy On Wed, Feb 20, 2008 at 10:12 AM, [p e r c e p t i c o n] [EMAIL PROTECTED] wrote: Hi Again, Ok...so by instantiating my class the Serialization took place and there are 99 elements of that type in the result...however the members of the class are all null, but i'm printing them to a file on the Java side so I know that there are values in each object...any ideas on why this is happening? thanks so much for all your input! percy -- Regards, Sujit Reddy. G
[flexcoders] how to de-serialize objects
hI experts, i've created a Java Object that returns an array list of items to my flex app...however even though I set the dataprovider attribute correctly none of the data actually renders...a quick glance at the data using the debugger shows that the objects are there so i think they'renot being deserialized properly...can anyone tell me how to achieve this? i've created the client side object in AS, but still not sure why it's not working... thanks p btw i'm using FB3 cheers
Re: [flexcoders] how to de-serialize objects
Are you sure about the code where you set the dataprovider to be 100% correct as I have never encountered such a scenario of no serialization. One quick recall i have is that flex was not able to de-serialize date types when used with a dotnet webservice, it rather takes them as a string. Can you let us know the communication mechanism you are using for this? ( webservices or remoting) Regarding a serializing utility, maybe this post can help you http://www.darronschall.com/weblog/archives/000247.cfm ~Peeyush On Feb 20, 2008 5:16 AM, [p e r c e p t i c o n] [EMAIL PROTECTED] wrote: hI experts, i've created a Java Object that returns an array list of items to my flex app...however even though I set the dataprovider attribute correctly none of the data actually renders...a quick glance at the data using the debugger shows that the objects are there so i think they'renot being deserialized properly...can anyone tell me how to achieve this? i've created the client side object in AS, but still not sure why it's not working... thanks p btw i'm using FB3 cheers
