BlazeDS 3 Installation Guide. Contents. BlazeDS runs in a J2EE web application and is available in ZIP files for the following configurations: BlazeDS with. 07/06 – Published the new version of guide. This book contains developer friendly information about the BlazeDS the OpenSource DataService package. BlazeDS Plugin – Reference Documentation The BlazeDS plugin makes it easier to build Grails-powered Rich Internet Applications . Manual configuration .
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Workload distribution Distributing work optimally between a client and its server is an important challenge when architecting RIA. ServiceAdapter abstract class sits at the root of the hierarchy. One is needed for the streamed response from the server to the client that the channel hangs on to.
You use the result and fault events of the RemoteObject component to handle results and errors.
To install the BlazeDS turnkey server: The settings should look similar to these you may need to adjust the exact folder based on your own settings: This means you must have a way that all requests coming from the Flex client and intended to be handled by the BlazeDS blazesd are routed by the DispatcherServlet to the MessageBroker.
Extending the scope of these frameworks to include interactions with Flex clients allows seamless persistence management.
Abstract classes not only define a contract like interfaces do but also define behavior through partial method implementations. BlazeDS has a set of endpoints where a Flex application channel sends requests up to BlazeDS that resides within a Servlet container or an application blzeds. Setting up your BlazeDS environment.
Remoting-config, proxy-config and messaging-config contain configuration pertaining to remote procedure calls, proxy services and message services respectively. Sometimes, you may b,azeds to work with strongly typed objects. Update products Modify the tutorial-product.
BlazeDS – Wikipedia
Therefore, message producers connected to a clustered server instance can send messages to message consumers connected to a different server within the same ugide. Adapters make it possible to hook-up specific server side entities. The binding of channels and endpoints to their implementation classes and their pairing is done in the services-config.
BlazeDS’s demoting capabilities provide fast and efficient data transmission between a Flex client and a Java server with the help of the binary Action Message Format AMF protocol and the built-in endpoints, channels and adapters to support it. This breaks the lazy loading semantics, rendering the idea of proxies useless.
A messaging destination represents a topic of real time conversation that interested parties can subscribe listen to or contribute to by posting their own messages.
Building a messaging application. For beginners, it’s convenient, appropriate and advisable to get the latest release version of the binary turnkey distribution.
Getting Started with BlazeDS
Clustering Clustered instances of BlazeDS share data blazedz messages across instances. In the application so far, the list of products returned by the getProducts method is deserialized into dynamic objects. For accessing managed entities like Spring Beans or Bpazeds Java Beans EJBsyou can use the JavaAdapter as the translator but you also need a custom factory to help you access these objects, as managed objects reside in a namespace separate from the one that BlazeDS uses to instantiate its own objects.
Clustered instances of BlazeDS share data and messages across instances. Flex clients use channels to connect to these endpoints. To make the application more robust and better partitioned, modify the code as follows: Besides, blwzeds BlazeDS can also act as a proxy server and help access data from domains that are blaxeds explicitly trusted via a crossdomain.
Create a Java project You will need a Java project to work on the server side of the applications built in this tutorial. In addition, you can choose to go with a text-based format that could be well structured like XML or delimited like comma-separated or tabdelimited text.
The following sections include a few more in context configuration illustrations. You can download Eclipse at: Remoting and messaging program that can be extended by using its Java API. Define the ProductDAO class as follows: