Java :: SPRING: Programmatically Instantiate Classes Based On Information Passed From Flex UI?
Feb 28, 2010
Imagine the UI passes back an XMl node as such:
[Code]....
And behind the scene what it is asking that you instantiate a class as such: new Source("blooper", new Exp(4), new Erlang(4,6); The problem lies in the fact that you don't know what class you will need to processing, and you will be sent a list of these class definitions with instructions on how they can be linked to each other. I've heard that using a BeanFactoryPostProcessor might be helpful, or a property editor/convertor. However I am at a loss as to how best to use them to solve my problem.
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Jun 7, 2011
I tried asking this on the Spring forums ([URL]) but did not get a response. I'm working on a web application that has an (end user) user interface built in Flex and a management user interface built using Spring MVC. I'm trying to secure both interfaces and can get each one working separately, but not together. I'm using a snapshot build of spring-flex-core 1.5.0 with Spring Security 3.1RC1 and Spring 3.1M1
[Code]...
I'm obviously missing something but while the Spring Flex documentation describes how to configure a hybrid MVC+Flex application at the servlet level it appears to only consider security from the perspective of a flex-only application.
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Feb 4, 2011
Some background: I have a Flex app embedded in an HTML page and am using Flex to send a soap request to my Java backend that does some authentication depending on the username and password entered in the Flex form. If I enter the correct login everything works fine and the Flex app can continue making further requests. But with an incorrect username/password, an "Authentication Required" dialog box pops up in my Browser and my Flex app won't respond with its proper handler until I click cancel. I'd like to get rid of the dialog box somehow,
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Aug 29, 2010
We have a Flex-BlazeDS-Spring-JMS application. The issue is sometimes we get a Blazeds error: NoSuchMethodException. It is not able to find the Java service. The weird issue with this it does not happen all the item...1 time it goes through and returns the result, the 2nd time it fails, 3rd time fails and so on. Also not all methods fail, only 2 method calls fail.
[Code]...
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Feb 8, 2011
The reference doc ( here ) tells us to download the sample application: Included in the project distribution is a collection of samples called the Spring BlazeDS Integration Test Drive. This samples project is set up to be built with Maven and then imported into Eclipse for running the application via WTP.
The samples in question, must either be spring-flex-testdrive-spring3.zip which is linked to in the document or spring-flex-testdrive-spring3.zip based on the notion that this is release 1.5.0.M1 (docs and samples).After I configure maven as described with the proper environment variable:
MAVEN_OPTS="-Xms256m -Xmx512m -XX:PermSize=128m -XX:MaxPermSize=256m"
I then execute (per instruction) the command to install: mvn clean install from the extracted samples directory (in my case C:spring-flex-testdrive ), I receive the following error:
C:spring-flex-testdrive>mvn clean install
[INFO] Scanning for projects...
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[code]....
I have managed to get a "Spring BlazeDS" application working (with Flex), but now I'm at the point where I need to implement security, and if the samples would compile and run correctly.
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Mar 22, 2011
I'm trying to figure out the best way to leverage a vanilla HttpServlet from a Spring-Flex (with BlazeDS) project I'm working on. My team has an HttpServlet that they've used in the past (that some other team built) that processes a request given some key/value pairs passed over HTTP GET. I want to use this HttpServlet class to do the same work, but I want to call it in Java, when my Flex client invokes a method on a Service. Ideally, the class invoking the HttpServlet can use the standard @Service and @RemotingDestination annotations (see here).
So, this is the HttpServlet:
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
[Code] .....
How to write my @Service class. I've tried going down a few different roads, but haven't had much luck. So far, I've considered and come up with secondary questions on the matter (but I've yet to work out the solution):
Do I need a @Controller for this sort of work?
Do I need a Servlet Factory?
Can the HttpServlet be a Spring managed bean, and call the ASP page another way?
(I like this idea least) Should I call the HttpServlet from Flex, and leverage logging and data the Servlet needs with a Remote Object?
The reason for my stubbornness in wanting to do this from Java is that I want to do some logging, and maybe leverage some other Singleton beans in the scope of the @Service class. However I work this out, I want to be as close to "Best Practices" as possible.
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Nov 4, 2009
I am developing a IT Monitoring Dashboard for the company I work at. The system will primarily perform monitoring of files, databases and servers. There will be a small part of the system which will allow the users to configure static data about the system eg: file locations, server names etc...
So as the app. will be a dashboard a lot of the application will consist of publishing data to the flex client to update all the monitoring views. So there will be limited database activity ie: insert/update/deletes.
[Code]...
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Nov 5, 2009
I have attached a service-adapter to a spring message-destination as follows:
<flex:message-destination
id="secured-chat"
send-security-constraint="trusted"
[code]....
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Nov 5, 2009
I seem to be getting the following error when I try to access a Remote Java class (on Spring/BlazeDS) from the Flex/Cairngorm application. I am going crazy at the moment trying to see what is wrong
[Code]...
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Jan 24, 2012
I am getting these error while creating bean id , Im using spring: Here is the error Error creating bean with name 'StockdataChart' defined in ServletContext resource [/WEB-INF/config/web-application-config.xml]: 1 constructor arguments specified but no matching constructor found in bean 'StockdataChart' (hint: specify index and/or type arguments for simple parameters to avoid type ambiguities)
[Code]...
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Oct 29, 2010
I have a Spring MVC web application which provides RESTful web services via a controller class (annotated with @Controller) which has methods mapped to specific request types and signatures via @RequestMapping annotations.I have attempted to integrate a BlazeDS service destination into the mix by 1) adding the HttpFlexSession listener to the web.xml, 2) adding the flex:message-broker and flex:remoting-destination declarations to my Spring application context configuration file, and 3) adding a generic /WEB-INF/flex/services-config.xml.
The above BlazeDS integration steps appear to have hosed my RESTful web services, in that it appears that requests are no longer being routed to the controller methods. Is it even possible to do this, i.e, to have a single web application which 1) services HTTP requests via request mapped controller methods and 2) services remote object method calls (i.e. from a Flex client) via a BlazeDS service? If so then can anyone tell me what it may be that I'm doing wrong?
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Oct 2, 2011
Is it possible to deploy my Spring/BlazeDS/Java application to elastic beanstalk? I'm using MyEclipse and built a Java Web Project with the required jar files etc. Do you need to specifically create an AWS Java Web Project - reason I ask is the options to include the BlazeDS files aren't there - so I'm wondering if Spring / BlazeDS is even supported? By default the turnkey blazeds runs through Port 8400 - so I imagine there are some additional tasks required to configure the endpoints to work through port 80?
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Apr 1, 2012
Incorrect number of arguments. Expected no more than 0.hen I try to:ar countries:Country = new Country(10);ormally this would work in Java or C++, so I'm not sure what's up!?Here is my custom class.
package {
public class Country {
var cName:String = "noName";
[code].......
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Feb 22, 2007
I'm wondering, is it possible to instantiate instances of user classes in the same way as you can instantiate the Object class? For instance, assuming that Vector is a user imported class:[code]I've tried that syntax or similar, and it throws me a syntax error. Is there another way to word the same idea?
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Nov 24, 2010
My only experience with Flex is some limited reading over the web. What i am wondering is if i want to use Flex or some variant of it for generating reports, specifically Charts, coming off a Java/Oracle backend can i accomplish that in an environment where the streaming media (we cannot play videos on our systems at work) is turned off? Also, are there any other restrictions revolving around using Flex for reporting in the form of charts? Currently, we use Jfree Chart API to develop charts but just exploring an alternative.
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Jul 9, 2011
I have an application that is coded using Flex 3 on UI side and java @ the service layer, along with BlazeDS. Now we need to authorize the users accessing the system based on the roles that are defined for them in the database, e.g. : say a user with role guest should not be able to access Admin tab on ui and also should not be able to do any operations other than viewing the data displayed on dashboard. Also the point to note here is that roles can be created dynamically by Super users from UI. I came across this link which describes how to perform Role Based Authentication & Authorization. With this approach I need to define the roles in service-config.xml but since my roles are not pre-defined I cannot go with this.
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May 25, 2010
I have 2 custom components, which have their own nesting hierarchy ... One is container for another. I have to "familiarize them" with each other. The way I'm trying to achieve that is using global events (one side is firing and the other one is catching):
Application.application.addEventListener("Hello", function (data:Event):void{
// .. some actions
});
[Code]...
Then should be created the connection between container and it's child.
BUT, the only thing I could acheive is passing a reference to the Container in the DynamicEvent. Is there any chance that I could access the child at the event-handler function.
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Aug 11, 2011
I have an application on Google App Engine that is made of Adobe Flex [and Java] components. The app has buttons to do tasks related to the app, including an "Open" button, which allows the user to open a .XML file, which then gets converted into data/content that's displayed in the app GUI. Then I press the "Run" button and it calculates stuff related to the inputted data/content. Also, my datastore is setup using JDO. I'm using only GAE. I'm NOT using GWT.
Based on the nature of the calculations (algorithms) I'm running, I would benefit from being able to open an XML file and then click the Run button on my app simultaneously on lets say 5 different versions of my app that I have uploaded to app engine. The 5 versions would be identical.Is there a way to create, say, an HTML page where the user would provide a link to the XML file (or open/load it from their disk) to be processed, then press "Go," where then the XML file is passed to all 5 versions of my app, then "automatically presses the Run button" on each?I can do this manually at the moment by going to each version-specific URL for my app, but it takes too long. Do you have any suggestions for how I would go about setting up such a script?
EDIT: Motivation for the problem: It's not XML processing time that I'm worried about. I currently have 2 algorithms that compute the number of particular types of "special points" that exist in an inputted XML file which contains large amounts of data. The difference between the two algorithms is that the 1st searches until it finds every special point. Then it stops. The 2nd searches and stops when it finds the first special point it comes across. Using multiple instances of this 2nd algorithm, one has the potential of finding all the points faster than the 1st algorithm.
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Aug 2, 2010
How can I programatically determine what the background color of my portlet will be before it's rendered? (ie in the init() or doview() functions). I want to make an embedded flash movie look transparent-ish by having it's background color (which I can set programatically) match the background color of the portlet. but the portlet's background color could be anything depending on the overall portal theme or by the color manually chosen by the user in the "look and feel" setup.
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Jun 1, 2009
is it possible in flash that from an xml, a hexadecimal value of a certain color is passed to flash and be displayed as a background or text color.This colors are set by the users and it's just that the colors are passed into flash and i will display it in my movie as a background color or text color?is that possible in flash?if yes, how would i do this? please give me some samples or sites where i could see some samples.If not, is there any workaround for this? -- i'm thinkin by css but that's too troublesome..
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Jan 5, 2010
I've noticed that some programmers animate objects based on the difference in time. I am not sure why or even if this is logical. Does anyone know the significance? Below is a snippet of code that explains what I mean:
[Code]....
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Feb 11, 2011
I want to build a program built around my pc specs. Is there a way to access such information as how much ram I have or how much cpu usage is being consumed, etc.?
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Jan 16, 2010
I have an array being generated with numbers from an XML file. Then I have the function 'maxF' that returns the maximum number inside that array. I need to get programaticaly other nodes inside the same XML file [where all these numbers are coming from] to print the date [which is a node on top of the number node]
var a:Array = []; for (var i = 1; i<=15; i++) { var RootNode = getXml.firstChild; eval("price"+i).htmlText = ""+RootNode.childNodes[i].childNodes[4].childNodes[2].firstChild+"
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Feb 18, 2009
I'm having trouble pulling & updating information based on an XML file.Each node contains a couple text items and a date. When the date arrives and gets to 00:00:00:00, the next XML node should be called.What would be the best way to store each node so that based on a timer reset (or something to that effect), it would pull the next node until that specified date and then pull the next set of info until the end of the nodes?
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Apr 14, 2009
how use a button (or movieclip) to filter information out of a datagrid based on an external XML document. For example, say, the data were types of fruit along with their corresponding prices, but the user was only interested in the price of apples. To see only those records or rows with apples and the corresponding apple prices, the user would press the "Apples" button.
Creating the datagrid seems pretty straight forward, it's just the second part that's stumped me. Whatever the answer is would seem to go at the end where the "trace" is now. There seems to be many, many Web sites that sort of touch on this subject.I typed of the following from memory (I'm at work now), but I think this is pretty much what I have so far.
import fl.controls.dataGridClasses.DataGridColumn;import fl.data.DataProvider;
var food:XML;var urlLoader:URLLoader;var urlRequest:URLRequest = new URLRequest("food_list.xml");urlLoader = new URLLoader();urlLoader.load(urlRequest);[code].............
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Apr 9, 2011
I'm developing a web application (client in Flash Builder 4, server in Eclipse 3.6 + Tomcat 7 + Spring 3 Framework). How do I make the Flex client automatically deploy in the Tomcat server and use BlazeDS messaging and remoting more seamlessly?
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May 25, 2011
What I was told, which sparked my curiosity on this topic:Java gui classes can implement hundreds of Listeners and Callbacks and many books teach you to implement all these interfaces in your gui class. Alternatively, these aspects can be implemented in inner classes, so methods called by that listeners do not get mixed up.'d like to know how to do this in ActionScript, which doesn't have inner classes, but has private classes. But, I don't think I fully realize what inner classes are about, so I'm merely trying to wrap my head around the situation where I would use them to organize a class' methods by their usages.
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Feb 8, 2012
Is there a secret to getting AS3 objects to translate over into Java using LCDS/Blaze?I'm working on a legacy system and we are having issue communicating with the back end, specifically when we send certain custom AS3 objects over Blaze to our Java RO methods... sometimes they port over, but often they come across "the bridge" as nulls.
(Objects coming from Java to AS3 work just fine however, as do sending primitive values rather than objects.)I thought using the remote metatag [RemoteClass(alias="java.foo.bar.Snafu")] in our AS3 classes was enough for bidrirectional support, and indeed it works just fine when Java is sending AS3 Snafu objects... but when AS3 tries to send to Java it works for some classes (mostly the legacy ones) but fails for others (mostly our new classes).
The specific error we get is something like this: "Cannot convert type flex.messaging.io.amf.ASObject with remote type specified as 'null' to an instance of class com.foo.bar.model.ResultableResource".
The error to me looks like Blaze cannot find the ResultableResource java class, yet we've doublechecked that the classes that don't translate have equivalents on both sides, and indeed they look similar to the classes that are working.
Is there some external mapping or publishing trick we need to do in Java or AS3 to allow these objects to export correctly? Do they need to implement the java.Externalizable interface? Maybe they need to be added manually to some kind of manifest? Adobe docs are fuzzy on the matter and make it sound like things should just work, but they don't.
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Mar 10, 2010
I'm currently developing a Spring + Flex app. What is the best Flex framework to use? I've been using PureMVC...
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Feb 17, 2010
I have a flash animation I'm working on for a Web site and the java-based menu that's above it uses drop-down menus. Well, when the drop-down menus and the flash animation overlap, all you can see is the flash. The menu is behind it. This only happens on a PC-based browser. It is fine on a Mac. Any thoughts here? Any settings I'm missing here? The file is built in Flash CS4 using ActionScript 3.0. Here's the URL for the site (problem on home page when "Resources" menu drops down):
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