Comments on: Messaging using Flex and Blaze DS http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/ Mon, 16 Nov 2009 08:57:21 +0000 http://wordpress.com/ hourly 1 By: Tuyen Nguyen http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27741 Tuyen Nguyen Tue, 27 Oct 2009 02:01:12 +0000 http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27741 Question: when i select a user and type in a message and click Send all i get is a popup which says [object Object] Answer: Suppose you have object Message(title,content,responseTime) You setup the AsyncMessage as follow in the PRODUCER: var aMsg:AsyncMessage=new AsyncMessage(); msg.body.title= txtTitle.text; msg.body.content=txtContent.text; msg.body.responseTime=txtResponseTime.text; .... producer.send(msg); You'll read AsyncMessage as follow in the CONSUMER: strTitle = msg.body.title; strContent = msg.body.content; strResponseTime = msg.body.responseTime; This works for me, but I feel annoying if you want to send an object which contains several objects inside it, the setup and reading information procedure is not fun at all. I wish Adobe help us the "body" attribute in AsyncMessage as Object class in Java. Tuyen Nguyen Question:
when i select a user and type in a message and click Send all i get is a popup which says

[object Object]

Answer:

Suppose you have object Message(title,content,responseTime)

You setup the AsyncMessage as follow in the PRODUCER:
var aMsg:AsyncMessage=new AsyncMessage();
msg.body.title= txtTitle.text;
msg.body.content=txtContent.text;
msg.body.responseTime=txtResponseTime.text;
….
producer.send(msg);

You’ll read AsyncMessage as follow in the CONSUMER:
strTitle = msg.body.title;
strContent = msg.body.content;
strResponseTime = msg.body.responseTime;

This works for me, but I feel annoying if you want to send an object which contains several objects inside it, the setup and reading information procedure is not fun at all. I wish Adobe help us the “body” attribute in AsyncMessage as Object class in Java.

Tuyen Nguyen

]]> By: Sujit Reddy G http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27514 Sujit Reddy G Mon, 07 Sep 2009 13:22:00 +0000 http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27514 Hi Arun, Please check if your Flex Builder project is pointing to right configuration file and try running a clean command on your Flex project. Also restart your server. Hope this helps. Hi Arun,

Please check if your Flex Builder project is pointing to right configuration file and try running a clean command on your Flex project. Also restart your server.

Hope this helps.

]]> By: Arun http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27488 Arun Thu, 03 Sep 2009 02:15:50 +0000 http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27488 remote-config.xml ------------------ <?xml version="1.0" encoding="UTF-8"?> <service id="remoting-service" class="flex.messaging.services.RemotingService"> <adapters> <adapter-definition id="java-object" class="flex.messaging.services.remoting.adapters.JavaAdapter" default="true"/> </adapters> <default-channels> <channel ref="my-amf"/> </default-channels> <destination id="CreatingRpc"> <properties> <source>org.user.UserService</source> <scope>application</scope> </properties> <adapter ref="java-object"/> </destination> </service> "Channel" part of the services-config.xml _________________________________________ <channels> <channel-definition id="my-amf" class="mx.messaging.channels.AMFChannel"> <endpoint url="http://localhost:8080/blaze/messagebroker/amf" class="flex.messaging.endpoints.AMFEndpoint"/> </channel-definition> <channel-definition id="my-secure-amf" class="mx.messaging.channels.SecureAMFChannel"> <endpoint url="http://localhost:8080/blaze/messagebroker/amfsecure" class="flex.messaging.endpoints.SecureAMFEndpoint"/> <properties> <add-no-cache-headers>false</add-no-cache-headers> </properties> </channel-definition> <channel-definition id="my-polling-amf" class="mx.messaging.channels.AMFChannel"> <endpoint url="http://localhost:8080/blaze/messagebroker/amfpolling" class="flex.messaging.endpoints.AMFEndpoint"/> <properties> <polling-enabled>true</polling-enabled> <polling-interval-seconds>4</polling-interval-seconds> </properties> </channel-definition> </channels> No other XML files is modified and the flash part is a copy paste from your blog source. Regards, Arun remote-config.xml
——————
<?xml version=”1.0″ encoding=”UTF-8″?>
<service id=”remoting-service” class=”flex.messaging.services.RemotingService”>
<adapters>
<adapter-definition id=”java-object” class=”flex.messaging.services.remoting.adapters.JavaAdapter” default=”true”/>
</adapters>
<default-channels>
<channel ref=”my-amf”/>
</default-channels>
<destination id=”CreatingRpc”>
<properties>
<source>org.user.UserService</source>
<scope>application</scope>
</properties>
<adapter ref=”java-object”/>
</destination>
</service>

“Channel” part of the services-config.xml
_________________________________________
<channels>
<channel-definition id=”my-amf” class=”mx.messaging.channels.AMFChannel”>
<endpoint url=”http://localhost:8080/blaze/messagebroker/amf” class=”flex.messaging.endpoints.AMFEndpoint”/>
</channel-definition>
<channel-definition id=”my-secure-amf” class=”mx.messaging.channels.SecureAMFChannel”>
<endpoint url=”http://localhost:8080/blaze/messagebroker/amfsecure” class=”flex.messaging.endpoints.SecureAMFEndpoint”/>
<properties>
<add-no-cache-headers>false</add-no-cache-headers>
</properties>
</channel-definition>
<channel-definition id=”my-polling-amf” class=”mx.messaging.channels.AMFChannel”>
<endpoint url=”http://localhost:8080/blaze/messagebroker/amfpolling” class=”flex.messaging.endpoints.AMFEndpoint”/>
<properties>
<polling-enabled>true</polling-enabled>
<polling-interval-seconds>4</polling-interval-seconds>
</properties>
</channel-definition>
</channels>

No other XML files is modified and the flash part is a copy paste from your blog source.

Regards,
Arun

]]> By: Arun http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27487 Arun Thu, 03 Sep 2009 02:11:38 +0000 http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27487 Hi Sujit, Each time I click the button I am getting the error "Destination CreatingRpc either does not exist...." I know the error is quite informative but I am not able to figure out what went wrong. Would u please help me out... Thanks in advance. remote-config.xml ___________________ org.user.UserService application services-config.xml ___________________ false true 4 Thanks, Arun Hi Sujit,
Each time I click the button I am getting the error
“Destination CreatingRpc either does not exist….”
I know the error is quite informative but I am not able to figure out what went wrong. Would u please help me out… Thanks in advance.

remote-config.xml
___________________

org.user.UserService
application

services-config.xml
___________________

false

true
4

Thanks,
Arun

]]> By: Sujit Reddy G http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27453 Sujit Reddy G Fri, 28 Aug 2009 14:24:25 +0000 http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27453 Hi Christian, Java classes are not converted to AS3 directly. AMF is the format used to represent the objects to transfer between server and Flash Player. You can try not returning from the class invoked until your zip files are downloaded. You can also try pushing the data to the client when the data is ready as explained in this URL http://sujitreddyg.wordpress.com/2008/08/14/sending-messages-from-java-to-blazeds-destinations-using-messagebroker/ Hope this helps. Hi Christian,

Java classes are not converted to AS3 directly. AMF is the format used to represent the objects to transfer between server and Flash Player. You can try not returning from the class invoked until your zip files are downloaded. You can also try pushing the data to the client when the data is ready as explained in this URL http://sujitreddyg.wordpress.com/2008/08/14/sending-messages-from-java-to-blazeds-destinations-using-messagebroker/

Hope this helps.

]]> By: Christian http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27380 Christian Thu, 20 Aug 2009 16:58:59 +0000 http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27380 Hello folks, well i am a little confused about the use of Flex and java, this is my problem: My java application must read two .zip files from an online server. These classes will load and parse the data in a Thread and perform certain actions depending on such info. The problem occurs when my flex application calls the java method that queries such data. I need to WAIT until the loading has finished. Any ideas? Another doubt is if the Java classes are being compiled and transformed into some form of ActionScript classes. Maybe I'm lost in space, so please I need a light in the darkness, thank you. Hello folks, well i am a little confused about the use of Flex and java, this is my problem: My java application must read two .zip files from an online server. These classes will load and parse the data in a Thread and perform certain actions depending on such info. The problem occurs when my flex application calls the java method that queries such data. I need to WAIT until the loading has finished. Any ideas?
Another doubt is if the Java classes are being compiled and transformed into some form of ActionScript classes.
Maybe I’m lost in space, so please I need a light in the darkness, thank you.

]]> By: Yang http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27273 Yang Wed, 22 Jul 2009 12:53:21 +0000 http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27273 Hi, Sujit. I also like to know how to get all the online (subscribed) users in real time. Is is possible to achieve this from the client side instead of having to call a java method from the server side constantly to update the subscribers information. If java methods have to be used, what information should I send to the client? I have read your article about sending messages from server to client but still have no idea about how to tackle this problem. It'd be great if you can give us a more detailed explaination about this. Thanks for your help Regards, Yang Hi, Sujit. I also like to know how to get all the online (subscribed) users in real time. Is is possible to achieve this from the client side instead of having to call a java method from the server side constantly to update the subscribers information.
If java methods have to be used, what information should I send to the client? I have read your article about sending messages from server to client but still have no idea about how to tackle this problem.
It’d be great if you can give us a more detailed explaination about this.
Thanks for your help

Regards,
Yang

]]> By: Sujit Reddy G http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27249 Sujit Reddy G Mon, 20 Jul 2009 15:43:31 +0000 http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27249 Hi Priya, Looks like your messaging-config.xml contains tags which are not allowed. Please try removing the tag creating problem and restart your server. Hope this helps. Hi Priya,

Looks like your messaging-config.xml contains tags which are not allowed. Please try removing the tag creating problem and restart your server.

Hope this helps.

]]> By: Sujit Reddy G http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27233 Sujit Reddy G Mon, 20 Jul 2009 14:52:58 +0000 http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27233 Hi daslicht, Please check if the article at the URL below http://sujitreddyg.wordpress.com/2008/08/14/sending-messages-from-java-to-blazeds-destinations-using-messagebroker/ Hope this helps. Hi daslicht,

Please check if the article at the URL below

http://sujitreddyg.wordpress.com/2008/08/14/sending-messages-from-java-to-blazeds-destinations-using-messagebroker/

Hope this helps.

]]> By: Priya http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27098 Priya Mon, 06 Jul 2009 08:21:54 +0000 http://sujitreddyg.wordpress.com/2008/01/17/messaging-using-flex-and-blaze-ds/#comment-27098 Hi Nice article. I tried setting up the chat application and it showed up the UI fine, but the message is not getting sent. I get an exception: **** MessageBrokerServlet failed to initialize due to runtime exception: Exception: flex.messaging.config.ConfigurationException: Unrecognized tag found in . Please consult the documentation to determine if the tag is invalid or belongs inside of a different tag: '/jms' in destination with id: 'chatApplication' from file: messaging-config.xml at flex.messaging.config.MessagingConfiguration.reportUnusedProperties(MessagingConfiguration.java:682) at flex.messaging.MessageBrokerServlet.init(MessageBrokerServlet.java:160) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4045) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4351) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:566) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Jul 6, 2009 1:50:01 PM org.apache.catalina.core.ApplicationContext log INFO: Marking servlet MessageBrokerServlet as unavailable Jul 6, 2009 1:50:01 PM org.apache.catalina.core.StandardContext loadOnStartup SEVERE: Servlet /BlazeDSPOC threw load() exception javax.servlet.UnavailableException: Unrecognized tag found in . Please consult the documentation to determine if the tag is invalid or belongs inside of a different tag: '/jms' in destination with id: 'chatApplication' from file: messaging-config.xml at flex.messaging.MessageBrokerServlet.init(MessageBrokerServlet.java:170) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4045) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4351) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:516) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:566) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) Jul 6, 2009 1:50:01 PM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-8080 Jul 6, 2009 1:50:01 PM org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8009 Jul 6, 2009 1:50:01 PM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=0/31 config=null Jul 6, 2009 1:50:01 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 4300 ms Please help. Thanks Priya Hi

Nice article.
I tried setting up the chat application and it showed up the UI fine, but the message is not getting sent.
I get an exception:
**** MessageBrokerServlet failed to initialize due to runtime exception: Exception: flex.messaging.config.ConfigurationException: Unrecognized tag found in . Please consult the documentation to determine if the tag is invalid or belongs inside of a different tag:
‘/jms’ in destination with id: ‘chatApplication’ from file: messaging-config.xml
at flex.messaging.config.MessagingConfiguration.reportUnusedProperties(MessagingConfiguration.java:682)
at flex.messaging.MessageBrokerServlet.init(MessageBrokerServlet.java:160)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4045)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4351)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)

Jul 6, 2009 1:50:01 PM org.apache.catalina.core.ApplicationContext log
INFO: Marking servlet MessageBrokerServlet as unavailable
Jul 6, 2009 1:50:01 PM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet /BlazeDSPOC threw load() exception
javax.servlet.UnavailableException: Unrecognized tag found in . Please consult the documentation to determine if the tag is invalid or belongs inside of a different tag:
‘/jms’ in destination with id: ‘chatApplication’ from file: messaging-config.xml
at flex.messaging.MessageBrokerServlet.init(MessageBrokerServlet.java:170)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4045)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4351)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:566)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Jul 6, 2009 1:50:01 PM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
Jul 6, 2009 1:50:01 PM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Jul 6, 2009 1:50:01 PM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/31 config=null
Jul 6, 2009 1:50:01 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 4300 ms

Please help.

Thanks
Priya

]]>