Java :: Why Value Objects Coming Back As Generic Flex Objects
Aug 4, 2011
I will try to give as much detail as I can. I am creating an CRM application using Flex(Cairngorm 2)/Java/Hibernate. The basic problem I am having is this: I have a Customer class in Java that has an ArrayList of Address classes. I have a Customer class in Flex that has an ArrayCollection of Address classes. When I make the remote object call for a Customer I get back a Customer object in Flex, but the ArrayCollecion objects have a data type of Object instead of Address. If I try to call for a List of Address classes I get the same result. If I try to call for a List of Customer classes I get a list of Customer classes in Flex. Using tomcat 6 with the following jars:
I'm using Zend AMF to send my remote objects to Flex. I've defined a Constant class and created getASClassName() method. Then I've created Action script class in flex.
Objects are send successfully, but they are deserialized to generic Objects in Flex instead of specific ones. EDIT: On network monitor in Flex I can see that AMF value is set to com.my.project.valueobjects.Constant. Although array from event.result contains Objects.
I've knocked together a Java/BlazeDS server which creates a generic GridBean object. This GridBean contains:[code]I then created a Flex app that uses a RemoteObjectServiceWrapper to call my java server, grab the GridBean, create some DataGrid columns from the columnDefs and then set the dataProvider as the list of objects. Ok so far, everything renders.Now, what I'd really like to do is: set up some kind of event handler on the flex side so that if my item/object is edited in the datagrid, I fire a message off to java saying 'edited this field on this item'. The end goal is to have a nice generic way to render any list of objects from Java in a flex datagrid.
what happens is I have a key, a door and a health bar and an enemy. the enemy takes off some of my health...I pick up the key and it disapears and is added to my inventory. I then us it to open door then my character can move off the screen to the next frame where there is a castle., but my health bar is full again. when I go back into the previous frame the key is back, the door is closed and I cant pass through it again until I pick up the key.
the only way I have found around this is to make sure the objects are in every frame but that only solves a few problems. one of the problems is my health bar always re-plenishes no matter what when going from frame to frame. and I still cant pass thru the door even though its open.
I am working on an application that is near the end of its development cycle and has mostly passed user testing. We recently realized that having flex convert dates to the client's local timezone is not desired, as all of our dates are in EST and contain no time data. Since BlazeDS sends dates in UTC, this results in the dates being converted to the day before in timezones west of EST.
The best solution is to go in and refactor all dates to adjust for the timezone offset, but that is just not doable at this stage. Since all dates in our application don't care about time, I would really like to be able to intercept all Date objects that come across BlazeDS and adjust for the timezone offset.
Is there any way, without having the creator of the object implement any special functions (no specific serialization functions) (however, they can use annotations), to have Flash serialize a generic, possibly deep (objects within objects within objects, etc, etc, etc) object?
Is it possible to receive custom generic typed objects through AMF? I'm trying to integrate a flex app with an existing C# service but flex is choking on custom generic typed objects. As far as I can tell Flex doesn't even support generics, but I'd like to be able to even just read in the object and cast its members as necessary. I basically just want flex to ignore the <T>. I'm hopeful that there's a way to do this, since flex doesn't complain about typed collections (a server call returning List works fine and flex converts it to an ArrayCollection just like an un-typed List).
The custom C# typed class public class TypeTest<T> { public T value { get; set; } public TypeTest () { }}
The server method returning the typeTest public TypeTest<String> doTypeTest() { TypeTest<String> theTester = new TypeTest<String>("grrrr"); return theTester; [Code] .....
Irritatingly if I change the result handler to take parameter of type Object it works fine. How to make this work with the value object?
I am using Flex 3 and make a call through a RemoteObject to a Java 1.6 method and exposed with BlazeDS and Spring 2.5.5 Integration over a SecureAMFChannel. The ActionScript is as follows (this code is an example of the real thing which is on a separate dev network);
Right away i just try to explain my problem: Using BlazeDS i got the following Javaclasses:
[Code]...
Then i got a Flex service class calling BlazeDS and executing the getCategories java method. Since Flash dosn't seem to understand typed arrays, the result from that method which i get back in flex is a simple array of untyped objects (the mapping dosn't seem to work here, even tought the class category exists in flex and has the same properties). thats the first thing. but however, i'm converting the untyped objects manually into objects of the category.as class. the second thing is that categories have child-categories within the java object, which are also ArrayLists of the type category.java. the problem about that: my result event object only contains the first level of categories, looking into them the children are allways null. i dunno why they are empty, since they ARE part of the java object category.
and the third thing (the strangest by fast), you maybe noticed i named the properties of the category.java class strange, like idCat and nameTest instead of simply id and name. why that? because the property names of my flex result objects dont seem to change when i change the java objects properties names (result object properties are named "id" and "name" but the java class object properties are named "idCAT" and "nameTEST"). that it REALLY strange, since if i set the properties, like you see at nameTEST = "TESTNAME" it IS recogniced by flex, only the proertyNAMES dont seem to be recognized at all.
I'm using a java-backend with a flex frontend. And when i want to use a labelfunction it doesn't load the indepth properties such as a value object, it's like it is lazy loaded in the flex side, I'm sure it is not comming from the backend because i've checked it overthere.I've got it also in datagrid's that it doesn't load all the values at once. [code]I ask at my back end get all John's, the backend gives me all John's which contains the Doe's. Now At the flex side I fire the result event from the callresponder when i receive that data. But still it can't acces the doe's into the Johns, the doe property of john is still null. When i ask it the second time it nows about the doe's, so it looks like lazy loading in a front-end way..
Alright so... I really don't know the best way to approach this. I had a LOT of code that I thought could be generalized into a function. I don't know how to explian it... here is the code:i attached it...I know it's a lot of code... I just... I don't know what to do with it anymore! When it was in a bunch of small functions, it worked (sort of) just seemed reallly messy and annoyed me.Oh btw its causing the hero to jsut go to 0,0 and then a hit symbol appears there, and then nothing happens, the hit doesnt even dissappear.
I have a collection of Objects in an ArrayCollection in my flex page.
What is the best approach to send this data to a Java Servlet?
The object in the ArrayCollection is a VO that consists of an id and message for now. I want a solution that is scalable in case more properties are added later on.
want to simplify coding and wondered if there was a way to write a script that could be used on multiple objects without having to write it to address each object individually. I am building a simple menu where I want the menu link to rise and scale up when the button for it is rolled over and then return to its original position when the mouse rolls off. I know I can write this per button and per item, but wanted to see if there was a way to write it once and then apply the action to everything. EX. My menu consists of 5 items (and respective buttons) home_mc (home_btn), menu_mc, dining_mc, contact_mc, specials_mc.If I write the code
home_btn.addEventListener(MouseEvent.MOUSE_OVER, homeOver); home_btn.addEventListener(MouseEvent.MOUSE_OUT, homeOff); function homeOver(MouseEvent) {
I am able to add key/pair data into the associative arrays, like;
Code: var arrColors: Array = new Array(); arrColors.push({color: "aqua", code: "0x00FFFF"}); arrColors.push({color: "beige", code: "0xF5F5DC"}); arrColors.push({color: "brown", code: "0xA52A2A"}); // and so on
But, if I want to do the same with the array of generic objects, like;
Code: var obj: Object = new Object(); obj["key"] = "value";
How can I add more data into it, because push() function does not seem working with this type of array.
I seek correction and guidancem from you experts, on the Associative arrays and the arrays of Generic Objects. I created the following working code and I believe it is an Associative array:
Code: var arrColors: Array = new Array(); arrColors.push({color: "aqua", code: "0x00FFFF"}); arrColors.push({color: "beige", code: "0xF5F5DC"}); arrColors.push({color: "brown", code: "0xA52A2A"}); // and so on
Now, I want to create an array of Generic Objects for the same items, as below:
I succeeded in sending typed objects from a PHP application to a flex front-end using Zend_AMF as per this question. The problem I am facing now is that I would like to send a typed object from flex to PHP and on the PHP side, be able to receive it as a typed object instead of stdClass.
Here is the class in flex: package com.mysite{ [Bindable] [RemoteClass(alias="CTest")] public class CTest { public var stuff1:String; [Code] .....
After some testing, I removed the namespace from the PHP object and moved it into the global namespace. This seems to have resolved the issue. I have tried setting RemoteClass to modules estingCTest and also modules.testing.CTest. $_eplicitType was then set to the same value for both tests. The result is that when I use modules.testing.CTest, this is the classname that Zend_AMF sees. If I use namespace notation, Zend_AMF sees modulestestingCTest, as all the slashes get stripped out. But how can I get this working with php namespaces?
I have a custom java class which has an ArrayList and corresponding to it have a custom vo class which has ArrayCollection (in Flex).I want to return data from Java to flex.Every variable in java is getting mapped to vo perfectly except for ArrayList.When trying to retrive When trying to retrive exposureUSDList (which is an arrayList) in flex I am getting empty ArrayCollection. It is not getting mapped properlyPlease find my code below:
I'm using BlazeDS to remote some Java objects that I'm consuming in a Flex application. I'm getting a type coercion error with one of my classes that I can't for the life of me figure out. I have other classes that are working fine using the same data types, and I've gone over my mapping a dozen times. I'm following all of the necessary conventions for getters and setters as far as I know...
Anyhow, my question is: how can I debug this problem? Running the Flex app in debug mode spits out some generic errors to the console that don't really help much (TypeError: Error #1034: Type Coercion failed: cannot convert Object@5d1d809 to valueObjects.SomeClass.).
I need to develop the HTTPS application using Flex and Java. But i have idea about remote objects or HTTPServices. which one is the best for developing HTTPS application.
If one doesn't have the source code, the only to test is to send keystroke and mouse move so I found this product but it's not free and opensource price is not even known :([URL] Squish supports automating interactions and testing non-HTML/DOM elements, that is, native objects, which are embedded in a web page. This is done at a fairly abstract level, which means that mouse and text input can be recorded and replayed.
In addition it is possible to inspect embedded native objects with the Spy tool and to insert verifications for these native objects. All of a native object's public properties can be accessed in test scripts.
I am working on an Adobe Flex front-end with a Java back-end using JPA for persistence. he protocol I am using is remote objects (AMF) implemented with BlazeDS.I started out with a service-facade and entity DAOs, but without any specific DTOs. The same POJOs, the domain objects, were passed in the service-facade as those used as DTOs passed to the Hibernate DAOs.However, the latest few days I have been thinking whether this is a good approach or not. The latest article on the subject I read was this one:Interesting JPA Pattern blogThe situation:Say I have POJO Book with a unidirection ManyToOne relation with the POJO Category (i.e. each book may only be associated with one category, but the same category may be associated with many books). I see some alternatives:Alternative 1:I expose a method/operation addUpdateBook(Book book). In the implementation of this operation I add/update both the book and the referenced category.
Internally Flash obviously keeps a list of the primitives drawn using Graphics so I wondered if you have many such primitives in a Sprite, can you re-position/remove/alter individual items rather than clear and re-draw everything? Or is this deeper into the bowels of Flash than you're allowed (or recommended) to go?
I have a service which returns an Array of ObjectProxy objects. I would like to cast this to a custom object (a value object) and create an ArrayCollection. How can I do this?ited:I am using Django and PyAMF for the backend. I had to write a custom SQL query and I am wrapping the resulting records in ObjectProxy and sending the whole result as an ArrayCollection.Here is my client side code:
[ArrayElementType("SessionVO")] [Bindable] private var _list:ArrayCollection;
I have 2 java classes that are the same (imagine the getters and setters):
class ScheduledEvent { private String eventName; private List<eventValues> values; [code]....
Now there is a reason why there are two classes that are the same.When something is "scheduled", I should get the ScheduleEvent object and when an event is started, I should get the StartEvent object.And depending on the object I get back, I do different things.My problem is that, on the backend, it will send me the ScheduleEvent object, but once it got to the flex side (via BlazeDS), it becomes a StartEvent....
At first, I thought it's because these two events have exactly the same variables, so I tried changing ScheduledEvent by adding a dummy variable (String foobar) but that didn't seem to make a difference.
EDIT: I'm using BlazeDS messaging system.That's why I am not using "one java method call to one responder" approach. So, in the message.body, I should be getting ScheduledEvent but I keep receiving StartEvent. I'm wondering if it's because the two objects have the same property and BlazeDS doesn't know how to map them correctly... I even put a break point in the java service layer, to make sure that the appropriate object is being sent back and it is... But by the time BlazeDS serializes and deserializes it to the flex side, it is now a StartEvent.
