[jboss-user] [Spring Integration] - Re: Spring Component Auto Detection
Ales, Is the code for spring-int (specifically org.jboss.spring.vfs) still maintained at https://anonsvn.jboss.org/repos/jbossas/projects/spring-int? Is the jar now available in JBoss AS 5.1.0 or part of some maven repository? Thanks. Naresh View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4267206#4267206 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4267206 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
Clebert, to answer your question, I am running on a real Windows XP machine - not a VM. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244056#4244056 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4244056 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
Ok I checked out your latest tweaks on the trunk, and it seems like the problem is gone. 1 messages sent and received without any hiccups!. That's great! As a side note, it took 12 minutes for the full round trip, which translates to about 14 tps. Any tips on how this can be improved? Of course this is on my crappy laptop, but I will try it later on my new desktop, which has the Intel i7 processor. Thanks again for nailing this issue. Naresh View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244198#4244198 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4244198 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
Please don't ask me to drop MDBs :-). I have tinkered with so many options since last month (including ActiveMQ), and settled on this one - at least it is working! I figured this is the best way to get robust connection pooling. Based on this, I even gave up my easier war packaging for an ear. So hope there's a better way to get MDBs performing - may be drop XA transactions and do some tricks like commit DB and then commit JMS. Thanks. Naresh View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244210#4244210 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4244210 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
Well, my test is very slim - it does not do any database transactions or message processing. I even disabled the logging of the messages to make sure I am getting raw message times. The only thing that is potentially slowing down the performance is the use of XA, through the use of JCA and JmsXA connection factory, I assume. I am completely flexible on dealing with this provided the JBM and JBoss AS teams jointly recommend the right way to do it. As mentioned in my previous message, I have seen people abandon XA and 2PC in favor of performance. Usually they will commit the database transaction first, if that succeeds they will acknowledge the JMS message (this assumes that the DB commit will fail more often than a JMS ack). May be you can confirm or deny this as a best practice and recommend a solution using this approach. In any case, as an application developer, I need a holistic solution that plays well with JBoss AS and JBM. Hope you can help with this. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244292#4244292 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4244292 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
My example is already posted in JIRA (see https://jira.jboss.org/jira/browse/JBMESSAGING-1677 - JmsTest-v2.zip). It obviously uses all the bad things :-), i.e. MDB, JCA, JTA. I think the best thing to do is to change the example to work in the "recommended way" and use it as a reference. I read the performance section in the manual. The most applicable one here seems to be "Re-use connections / sessions / consumers / producers". Indeed JCA is supposed to do that and hence every place I have read, the recommendation is to go with JCA. So, I am a bit confused - are you recommending to drop JCA and write our own connection pooling? I also read the comment regarding not to use Spring JMS Template. Two questions here: 1) The JMS template is used only for sending messages and as long as we connect it to a pooled connection factory, there should be no problems, correct? Now how to get that pooled connection factory is a problem if the recommendation is not to use JCA. 2) The JMS template does not come into picture when receiving messages. Spring provides a MDP container which does its own pooling. So that should not be a problem either, correct? So please help me understand how I can practically use the tuning recommendations. If I shouldn't be using JCA/JTA etc., then I have to manage resources myself. This means all application developers will write their own pooling code, which seems counter productive. Or we can use whatever is available out there (like Spring Template and MDP) and adapt it to work the right way. Thoughts? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244334#4244334 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4244334 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
"timfox" wrote : "clebert.suco...@jboss.com" wrote : "timfox" wrote : If you post your example application on a JIRA, then someone next week can have a look at it and see why it's acting slow... | | | | | | | The test we were using to replicate the ping issue replicates this transaction issue. | | Yes I know, but I am not sure whether that is the exact same program that the user used to get 14 TPS (which seems extremely slow), that's why I asked for it. Yes it is the exact same program. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244339#4244339 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4244339 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
"timfox" wrote : I'm slightly confused - I can't see where in your test program the Spring JMS Template is being used... The test program doesn't use Spring at all. All my comments about Spring were in reference to the performance testing section of the JBM manual. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244353#4244353 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4244353 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
"timfox" wrote : The "right" way depends on what you are trying to do. | | From your test program I can see you are just sending messages to a queue, and consuming them via an MDB which does nothing but log a message. | | In this case you don't need transactions on your MDB, also there's no real JCA involved here, since you're just sending messages from a client - there's nothing to pool. | | Also you are currently using persistent messages, for the purposes of this example that's unnecessary too. Ah I see where you are coming from :-). My real application actually consists of two applications, the first accepts orders coming from http requests and the second processes the orders. Orders are transmitted from app1 to app2 over JMS. Both apps must persist the orders in their own databases. Earlier both the applications were simple web applications (war packaging), but when JMS was introduced in the mix, I switched to EAR because it seemed that MDBs/JCA/JTA is the "right" way to process JMS messages. This has obviously increased the complexity of the whole system and instead of focusing on the business functionality I am spending all my time on JMS. I will gladly move back to WAR if we can find a reasonable JMS approach without using MDBs. So that's what I am really trying to do (and I suspect that's what 90% of the people using JMS do anyway)! In short, I need to persist objects on both systems. Both systems need to be able to send JMS messages to each other (orders and confirmations) - I have two separate queues set up for this - one in each direction. I can't loose any orders or confirmations - so I guess the messages need to be persistent. The test program was just a simplification to figure out how the JMS piece should work. Hope this helps set up the context. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244363#4244363 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4244363 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
"timfox" wrote : Why are you persisting orders in a database? To clarify, orders are persisted in two databases, one on each system. The two systems belong to different departments (or even different companies) - so there is an ownership issue here and both systems need to save the data. Moreover the database representation of an order is different on each system (different attributes, different relationships) based on their responsibilities. Only the common attributes needed by both systems are passed on the JMS message. I hope this clarifies the need for persisting the orders in the two databases. "timfox" wrote : If you are using persistent messages then the JMS system can guarantee persistence for you. I am confused about this. I believe that JMS persists messages only to guarantee delivery in case the target system is down or not operating correctly. You do not expect me to look at persisted JMS messages as the system of record for my orders, do you? For me these are just text messages on a queue, not first class objects that can be associated with other objects in my database. Moreover, at least conceptually I think of persisted JMS messages to be deleted when the message has been consumed and acknowledged. So they are not a permanent record of my business transactions. Am I missing something? Given these requirements, I know that I will need x milliseconds to store orders in my databases. All I am trying to do now is to make sure that JMS is minimum overhead on my system, which is a completely orthogonal issue. As I said earlier, I am prepared to embrace all the best practices on the JMS side to improve performance as long as I have reliable and performant messaging. I can punt MDBs, JTA, JCA - whatever you say as long as I have a decent alternative. So if you want me to reuse connections, sessions, consumers, producers, tell me how: write my own, use something provided by JBM, or pick something like Spring JMS template (with some connection pooling) and their MDP container! View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244399#4244399 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4244399 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
Clebert, Tim, Thanks for your detailed responses. So I understand how to deal with database persistence. The only question that remains is how I should configure the JMS piece. Drop MDBs/JCA/JTA? (since that is turning out to be slow too.) But, replace it with what? My own connection/session/consumer/producer pools or some off-the-shelf framework? Looking forward to your response. Naresh View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=424#424 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=424 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
Thanks Tim. I will surely try out your suggestion of using raw JMS to send and receive from a queue. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244464#4244464 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4244464 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
Andy and Tim, thanks for answering my questions. I guess I was not very clear on the boundaries between JBM and JBoss, so your explanation was very helpful. Since many users will use JBoss and JBM together, I suppose including that explanation in the manual would also be very useful. I have reopened https://jira.jboss.org/jira/browse/JBMESSAGING-1677 and attached my latest code to it. The configuration steps are included in readme.txt. Andy, if you need any more information please let me know. Thanks. Naresh View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243247#4243247 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243247 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
Hi Andy,
Thanks for the pointers. Based on your suggestions I have been able to send and
receive 1000 messages on my Windows XP box without any problems! I tried to
push this number upwards but it breaks at about 3000 messages - same
"Connection failure has been detected" message. Anyway, I am not worried about
that right now since I am not expecting those kinds of loads on my system.
Moreover, it may just be that I am running out of steam on my development
laptop.
Bottom line is that my MDB configuration has always been correct. As you
indicated, since I am running in my local server, I can just use the default
INVM settings and there is no need for netty. So I have reverted to the simple
MDB configuration I previously had:
| @MessageDriven(activationConfig={
| @ActivationConfigProperty(propertyName="destinationType",
propertyValue="javax.jms.Queue"),
| @ActivationConfigProperty(propertyName="destination",
propertyValue="queue/jmstest")
| })
| public class TestMessageListener implements MessageListener {
| ...
| }
|
The problem really was on the sender side. As Tim pointed out, because I was
using "/ConnectionFactory", I was really not going through the JCA adapter. As
soon as I changed that to "java:/JmsXA", messages started flowing smoothly. So
I am a happy camper now :-).
Couple of quick followup questions:
1) When I monitor my queue from JBoss jmx-console I see very low message
counts, typically less that 50. I know that all my 1000 messages have been
pumped into the queue because the call to send them has returned. I also know
that only a handful have been received by watching the logs. So why does the
console not show a big number in the queue?
2) In the stand-alone server use case, where is the connection factory located
- on the JBM server or on client (i.e. a standalone application or servlet/EJB
running on an application server)? I am assuming that it is on the client and
you might even provide an implementation that manages a pool of connections
just like the JCA adapter on the application server. Is this assumption correct?
Finally, I have couple of suggestions that would make the documentation a lot
clearer - at least for me :-). I like the two diagrams in sections 3.3 and 3.4
- they give a nice high level overview of the two use cases - standalone and
embedded. I suggest showing an external client in the standalone case to make
it crystal clear from where the services are accessed.
Next, I would use these diagrams as a base for explaining deeper concepts.
Overlay them with connection factories to show where they are located and how
many of them are there. Especially useful would be to show what we get
"out-of-the-box". For example, I had no idea that we get the JmsXA factory
out-of-the-box and it is a JCA factory that I can start using right away. The
documentation leads me to believe that I got to do a #~it-load of configuration
before I can get JCA working - which is absolutely not true.
Finally, it would be very helpful to use the diagrams to show which
configuration file controls which piece. There are so many configuration files
flying out there that it is confusing for a beginner. You guys have set up very
good defaults so that a new user could get started in just 10 minutes, but it
has taken so much energy for so many people to get a simple use case going. I
guess if you create a 10 minute getting started guide for two use cases
(embedded and stand-alone), that would go a long way! (The existing Quick Start
Guide is very mechanical, it gets the examples running but leaves the reader
without any context around what they did. Also, I was having problems getting
the jca-config example to run because of couple of issues - I could provide
details separately.)
I hope this is feedback constructive.
Thanks again for all your help.
Naresh
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[jboss-user] [JBoss Messaging] - Re:
Sorry about the double post. I did not realize that the first one had gone to page 2. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4242737#4242737 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4242737 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
Hi Tim,
To answer your questions:
- I am not mixing jars from beta1/2 with beta3. I have completely separate
JBoss installations for JBoss+JBM.BETA1 and JBoss+JBM.BETA3. The JBoss
installations were created by running ant in JBM's config\jboss-as directory
with appropriate versions installed. Also since my app runs on JBoss, my ear
does not contain any JBM jars.
- I also have acceptors and connectors on my beta 3 configuration just like
clebert. We had talked about that issue on a separate thread, so I am aware of
it. Specifically, I have copied
jboss-messaging-2.0.0.BETA3\examples\javaee\mdb\server\jbm-configuration.xml to
JBOSS_HOME\server\default-with-jbm2\deploy\messaging.sar\jbm-configuration.xml.
- I tried doing a JCA configuration as you suggested, but that crashed and
burned! Specifically, the ant task that generates default-with-jbm2 creates a
ra.xml that is fairly close to the example in the documentation. The default
jms-ds.xml also creates a tx-connection-factory with jndi-name = JmsXA. So I
simply changed my jndi lookup as follows, hope that's correct:
| jndiContext = new InitialContext();
| connectionFactory = (ConnectionFactory)
| jndiContext.lookup("/JmsXA");
|
I am not sure how to configure the listener part. Following the documentation
example I changed my message listener as follows:
| @MessageDriven(name = "TestMessageListener", activationConfig = {
| @ActivationConfigProperty(propertyName="destinationType",
propertyValue="javax.jms.Queue"),
| @ActivationConfigProperty(propertyName="destination",
propertyValue="queue/jmstest"),
| @ActivationConfigProperty(propertyName="acknowledgeMode",
propertyValue="Auto-acknowledge"),
| @ActivationConfigProperty(propertyName="ConnectorClassName",
propertyValue="org.jboss.messaging.integration.transports.netty.NettyConnectorFactory"),
| @ActivationConfigProperty(propertyName="ConnectionParameters",
propertyValue="jbm.remoting.netty.port=5545")
| })
| public class TestMessageListener implements MessageListener {
| ...
| }
|
Of course, this doesn't work! I get the following exception:
| Caused by: MessagingException[errorCode=2 message=Unable to connect to
server using configuration
org-jboss-messaging-integration-transports-netty-NettyConnectorFactory?jbm-remoting-netty-port=5545]
| at
org.jboss.messaging.core.client.impl.ConnectionManagerImpl.createSession(ConnectionManagerImpl.java:294)
| at
org.jboss.messaging.core.client.impl.ClientSessionFactoryImpl.createSessionInternal(ClientSessionFactoryImpl.java:962)
| at
org.jboss.messaging.core.client.impl.ClientSessionFactoryImpl.createSession(ClientSessionFactoryImpl.java:706)
| at
org.jboss.messaging.ra.JBMResourceAdapter.createSession(JBMResourceAdapter.java:1261)
| at
org.jboss.messaging.ra.inflow.JBMActivation.setupSession(JBMActivation.java:359)
| at
org.jboss.messaging.ra.inflow.JBMActivation.setup(JBMActivation.java:306)
| at
org.jboss.messaging.ra.inflow.JBMActivation.start(JBMActivation.java:269)
|
What next?
BTW, couple of questions:
1) I see that we are creating a tx-connection-factory in jms-ds.xml. Where do
we create an "rx-connection-factory"? Do these have to be seperate and
different?
2) Why do we have low-level details like "jbm.remoting.netty.port=5545" in
annotations? Is there any way to avoid them. My earlier configuration simply
had this:
| @MessageDriven(activationConfig={
| @ActivationConfigProperty(propertyName="destinationType",
propertyValue="javax.jms.Queue"),
| @ActivationConfigProperty(propertyName="destination",
propertyValue="queue/jmstest")
| })
|
which seems quite logical, but I don't know how it figured out which connection
factory to use. I would appreciate some clarification on this.
Thanks.
Naresh
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[jboss-user] [JBoss Messaging] - Re:
Hi Tim,
To answer your questions:
- I am not mixing jars from beta1/2 with beta 3. I have completely separate
JBoss installations for JBoss 5.1.0 + JBM 2.0.0.BETA1 and JBoss 5.1.0 + JBM
2.0.0.BETA3. The JBoss installations were created by running ant in JBM's
config\jboss-as directory with appropriate versions installed. Also since my
app runs on JBoss, my ear does not contain any JBM jars.
- I also have acceptors and connectors on my beta 3 configurations just like
clebert. We had talked about that issue on a separate thread, so I am aware of
it. Specifically, I have copied
jboss-messaging-2.0.0.BETA3\examples\javaee\mdb\server\jbm-configuration.xml to
JBOSS_HOME\server\default-with-jbm2\deploy\messaging.sar\jbm-configuration.xml.
- I tried doing a JCA configuration as you suggested, but that crashed and
burned! Specifically, the ant task that generates default-with-jbm2 creates a
ra.xml that is fairly close to the example in the documentation. The default
jms-ds.xml also creates a tx-connection-factory with jndi-name = JmsXA. So I
simply changed my jndi lookup as follows:
| jndiContext = new InitialContext();
| connectionFactory = (ConnectionFactory)
| jndiContext.lookup("/JmsXA");
|
I am not sure how to configure the listener part. Following the documentation
example I changed my message listener as follows:
| @MessageDriven(name = "TestMessageListener", activationConfig = {
| @ActivationConfigProperty(propertyName="destinationType",
propertyValue="javax.jms.Queue"),
| @ActivationConfigProperty(propertyName="destination",
propertyValue="queue/jmstest"),
| @ActivationConfigProperty(propertyName="acknowledgeMode",
propertyValue="Auto-acknowledge"),
| @ActivationConfigProperty(propertyName="ConnectorClassName",
propertyValue="org.jboss.messaging.integration.transports.netty.NettyConnectorFactory"),
| @ActivationConfigProperty(propertyName="ConnectionParameters",
propertyValue="jbm.remoting.netty.port=5545")
| })
| public class TestMessageListener implements MessageListener {
| ...
| }
|
Of course, this doesn't work! I get the following exception:
| Caused by: MessagingException[errorCode=2 message=Unable to connect to
server using configuration
org-jboss-messaging-integration-transports-netty-NettyConnectorFactory?jbm-remoting-netty-port=5545]
| at
org.jboss.messaging.core.client.impl.ConnectionManagerImpl.createSession(ConnectionManagerImpl.java:294)
| at
org.jboss.messaging.core.client.impl.ClientSessionFactoryImpl.createSessionInternal(ClientSessionFactoryImpl.java:962)
| at
org.jboss.messaging.core.client.impl.ClientSessionFactoryImpl.createSession(ClientSessionFactoryImpl.java:706)
| at
org.jboss.messaging.ra.JBMResourceAdapter.createSession(JBMResourceAdapter.java:1261)
| at
org.jboss.messaging.ra.inflow.JBMActivation.setupSession(JBMActivation.java:359)
| at
org.jboss.messaging.ra.inflow.JBMActivation.setup(JBMActivation.java:306)
| at
org.jboss.messaging.ra.inflow.JBMActivation.start(JBMActivation.java:269)
|
What next?
BTW, couple of questions:
1) I see that we are creating a tx-connection-factory in jms-ds.xml. Where do
we create an "rx-connection-factory"? Do these have to be seperate?
2) Why do we have low-level details like jbm.remoting.netty.port=5545 in
annotations? Is there any way to avoid it. My earlier configuration simply had
this:
| @MessageDriven(activationConfig={
| @ActivationConfigProperty(propertyName="destinationType",
propertyValue="javax.jms.Queue"),
| @ActivationConfigProperty(propertyName="destination",
propertyValue="queue/jmstest")
| })
|
which seems very logical, but I don't know how it figured out which connection
factory to use. I would appreciate some clarification on this.
Thanks.
Naresh
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[jboss-user] [JBoss Messaging] - Re:
Clebert, I have now tried the same code (with the modifications you suggested)
on 3 machines - Windows XP, Windows Vista and Windows NT. The only machine
without the connection failures is Windows NT. XP and Vista seem to start
giving issues after receiving 500 messages. What OS did you run your test on?
- Any other next steps you suggest?
- Can I monitor the connections somehow?
- What does the error message mean ("Connection failure has been detected Did
not receive ping from server:3")?
Thanks.
Naresh
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[jboss-user] [JBoss Messaging] - Re:
Clebert, thanks for testing my app. I will try your suggestions and let you know if it makes any difference. Quick followup question - how do I use the JCA connection factory? Is there one existing in the default configuration and what is its JNDI name? Thanks. Naresh View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4242277#4242277 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4242277 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re:
Done. https://jira.jboss.org/jira/browse/JBMESSAGING-1677 View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4242032#4242032 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4242032 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - "Connection failure has been detected" message
I am having trouble receiving messages reliably using JBM 2.0.0.BETA3 deployed
in JBoss AS 5. Every once in a while I am getting a "Connection failure has
been detected" message and then I start loosing messages. Can someone help me
identify the issue?
I have simplified my web application down to the bare bones. At this point I
can send 1000 messages as fast as I can and then see if I receive all of them.
Few times I have gotten all 1000, but several times I get much less, say about
600. I get the following warnings in between:
| 22:58:26.968 WARNING [Thread-44 (group:JBM-client-global-threads-27401341)]
[org.jboss.messaging.core.remoting.impl.RemotingConnectionImpl] Connection
failure has been detected Did not receive ping from server:3
| ...
| 23:02:56.984 WARNING [Thread-3 (group:JBM-scheduled-threads-10153586)]
[org.jboss.messaging.core.remoting.impl.RemotingConnectionImpl] Connection
failure has been detected Did not receive ping from client. It is likely a
client has exited or crashed without closing its connection, or the network
between the server and client has failed. The connection will now be closed.:3
| 23:02:56.984 WARNING [Thread-3 (group:JBM-scheduled-threads-10153586)]
[org.jboss.messaging.core.server.impl.ServerSessionImpl] Client connection
failed, clearing up resources for session ceb2cc8d-69d8-11de-9025-0016d433fcb5
| 23:02:57.000 WARNING [Thread-3 (group:JBM-scheduled-threads-10153586)]
[org.jboss.messaging.core.server.impl.ServerSessionImpl] Cleared up resources
for session ceb2cc8d-69d8-11de-9025-0016d433fcb5
|
The message listener code is as simple as this:
| @MessageDriven(activationConfig={
| @ActivationConfigProperty(propertyName="destinationType",
propertyValue="javax.jms.Queue"),
| @ActivationConfigProperty(propertyName="destination",
propertyValue="queue/jmstest")
| })
| public class TestMessageListener implements MessageListener {
|
| private static final Logger logger =
| LoggerFactory.getLogger(TestMessageListener.class);
|
| @Override
| public void onMessage(Message message) {
|
| if (message instanceof TextMessage) {
| String messageText = null;
| try {
| messageText = ((TextMessage)message).getText();
| logger.debug("Received message: {}", messageText);
| }
| catch (JMSException e) {
| throw new RuntimeException(e);
| }
| }
| }
| }
|
I can send my small Maven project if someone could try it out.
Thanks.
Naresh
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[jboss-user] [JBoss Messaging] - Re: MessagingException when deploying ear
Clebert, thanks so much for the pointers. You are correct, the default configuration in beta3 does not contain either the in-vm connector or the acceptor. After adding both, the exception went away. Just out of curiosity, is this intentional? I would prefer that the default configuration worked right out of the box. I know JMS, but having to learn about acceptors, connectors and configuration is yet another impediment for noobs to adopt JBM. In any case, JBM 2.0 is looking like a great product in the making. Keep up the good work! Thanks. Naresh View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4241873#4241873 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4241873 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - MessagingException when deploying ear
I am getting the following MessagingException when I deploy my ear. I am using JBoss Messaging 2.0.0.BETA3. Any idea why this could be happening? (The same ear on another machine with JBM 2.0.0.BETA1 is working just fine.) | org.jboss.deployers.spi.DeploymentException: Endpoint activation failed ra=jboss.jca:service=RARDeployment,name='jms-ra.rar' activationSpec=org.jboss.messaging.ra.inflow.JBMActivationSpec(ra=org.jboss.messaging.ra.jbmresourceadap...@673a6164 destination=queue/exchange.to.bfseam.fix.queue destinationType=javax.jms.Queue tx=true durable=false user=null maxMessages=1 minSession=1 maxSession=15 keepAlive=6) | at org.jboss.deployers.spi.DeploymentException.rethrowAsDeploymentException(DeploymentException.java:49) | at org.jboss.ejb3.mdb.inflow.JBossMessageEndpointFactory.activate(JBossMessageEndpointFactory.java:346) | at org.jboss.ejb3.mdb.inflow.JBossMessageEndpointFactory.start(JBossMessageEndpointFactory.java:212) | at org.jboss.ejb3.mdb.MessagingContainer.startProxies(MessagingContainer.java:224) | at org.jboss.ejb3.mdb.MessagingContainer.lockedStart(MessagingContainer.java:176) | at org.jboss.ejb3.EJBContainer.start(EJBContainer.java:884) | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) | at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) | at java.lang.reflect.Method.invoke(Method.java:597) | at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:59) | at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:150) | at org.jboss.joinpoint.plugins.BasicMethodJoinPoint.dispatch(BasicMethodJoinPoint.java:66) | at org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelControllerContextAction.java:241) | at org.jboss.kernel.plugins.dependency.ExecutionWrapper.execute(ExecutionWrapper.java:47) | at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchExecutionWrapper(KernelControllerContextAction.java:109) | at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchJoinPoint(KernelControllerContextAction.java:70) | at org.jboss.kernel.plugins.dependency.LifecycleAction.installActionInternal(LifecycleAction.java:221) | at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:54) | at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:42) | at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62) | at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71) | at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51) | at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348) | at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631) | at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934) | at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082) | at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984) | at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:774) | at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:540) | at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:121) | at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:51) | at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62) | at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50) | at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171) | at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439) | at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157) | at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1178) | at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1210) | at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098) | at org.jboss.dependency.plugins.AbstractControllerContext.install(Abst
[jboss-user] [JBoss Messaging] - Re: Can't control queues from jconsole
Thanks Jeff. That worked for me. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4240556#4240556 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4240556 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Re: Can't control queues from jconsole
How do I look up queues in JBoss JMX console? I click jboss.messaging then name=JMSProvider,service=JMSProviderLoader, but I don't see any queues under there. At least with jconsole I was able to get to the queues quite easily. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4240332#4240332 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4240332 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Messaging] - Can't control queues from jconsole
I am not able to operate on any of my queues from jconsole. For example, clicking on listAllMessages gives the following error: Problem invoking listAllMessages: UnmarshallException... Nested Exception: ClassNotFoundException: org.jboss.messaging.utils.SimpleString What am I missing? Is there a better tool to monitor and control JBoss Messaging? I am running JBoss Messaging 2.0 .0.BETA1 embedded in JBoss 5.0.1.GA Naresh View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4240181#4240181 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4240181 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss jBPM] - Re: Can process and task variables be defined in the process
I have not seen any reference to such functionality in the manual or on the web. The jpdl schema also suggests that this is not possible. I am fairly certain that such a feature will improve the usability of jBPM as it provides an easy way to provide "personality" to processes and tasks at process definition time. Currently I see very specific handlers that can attach to a task with predefined semantics. What if I can attach a variable instead, say a variable called "form" whose value specifies the form I need to trigger in order to work on the task. Now my front-end can easily dispatch forms to take care of any task. Currently I am keeping such mappings externally and there is quite a bit of machinery needed to make this work. (I am using the process name plus the task name to create a unique key which maps to a form name. Unfortunately getting the process name from a task instance is quite expensive as it involves traversing through process instance and then process defini! tion.) Any thoughts from the committers? Thanks. Naresh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4182254#4182254 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4182254 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss jBPM] - Can process and task variables be defined in the process def
I understand that process and task variables exist on process instances and task instances. However, is there a way to define them in a process definition? This would allow us to create a predefined variable whenever a process instance or a task instance is created from a process definition. Is it possible to do this or have I missed something? Thanks. Naresh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4182113#4182113 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4182113 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss jBPM] - Re: Finding all running process instances for a process defi
Ah ok! That was the missing link I was looking for. Still getting used to the API. Thanks so much. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4180907#4180907 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4180907 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss jBPM] - Finding all running process instances for a process definiti
How do I find all running process instances for a process definition? I tried GraphSession.findProcessInstances(long processDefinitionId), but this method returns all process instances including those that have ended (potentially a very expensive query). I found the following named query in hibernate.queries.hbm.xml. This is exactly what I need, but I cannot find any method in the source that uses this query. | | | | | Can someone tell me how I can leverage this query? (I am using jBPM 3.2.3). Thanks. Naresh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4180894#4180894 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4180894 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss jBPM] - Re: Differntiationg between types of tasks
Thanks Ronald, I will take a look at Seam/jBPM integration. BTW, I just tried to follow the examples included with jBPM Console and they do exactly what I am looking for. For example, the task_all.xhtml page shows all tasks and when any of the task links is pressed, the appropriate form is brought up. It appears that this is done using a forms.xml file which maps task to forms. The jBPM user's manual does not seem to describe this functionality. Any idea where this feature is documented? Thanks. Naresh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4178057#4178057 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4178057 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss jBPM] - Re: Differntiationg between types of tasks
Ah yes, that will work :-). Thanks. It does involve an if-then-else though, so wasn't sure if I was missing some better way of doing this. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4177855#4177855 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4177855 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss jBPM] - Differntiationg between types of tasks
I am developing an application where I need to show a task list for the user who is logged in. Tasks can be of different types, e.g. Fill out a W2 form vs. Submit your timecard (they may belong to one of several workflows). Each task is presented as a link which takes the user to a completely different area on the web site. How can this be implemented with jBPM? I understand that I can query jBPM to return tasks that belong to the same actorId, but how do I differentiate between the tasks so I can do different things in each case? Thanks. Naresh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4177833#4177833 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4177833 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [EJB 3.0] - Re: Persisting POJO entities defined in a different jar
Here you go... | | http://java.sun.com/dtd/application_1_3.dtd";> | | estore-app | | estore-server-1.0.jar | | | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165641#4165641 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4165641 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [EJB 3.0] - Persisting POJO entities defined in a different jar
I have an existing jar file containing POJO entities (no JPA annotations, no persistence.xml). I would like to persist there entities using a new EJB jar file which contains a persistence.xml and a mapping file. Is this possible? I tried it, but I am getting a InvalidMappingException: | Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from resource mappings.xml | at org.hibernate.cfg.Configuration.addResource(Configuration.java:569) | at org.hibernate.ejb.Ejb3Configuration.addClassesToSessionFactory(Ejb3Configuration.java:910) | ... 101 more | Caused by: org.hibernate.AnnotationException: Unable to load class defined in XML: samples.estorejpa.domain.Customer | at org.hibernate.cfg.AnnotationConfiguration.add(AnnotationConfiguration.java:592) | at org.hibernate.cfg.AnnotationConfiguration.addInputStream(AnnotationConfiguration.java:674) | at org.hibernate.cfg.Configuration.addResource(Configuration.java:566) | ... 102 more | Caused by: java.lang.ClassNotFoundException: No ClassLoaders found for: samples.estorejpa.domain.Customer | at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.java:212) | at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:521) | at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:415) | at java.lang.ClassLoader.loadClass(ClassLoader.java:252) | at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) | at java.lang.Class.forName0(Native Method) | at java.lang.Class.forName(Class.java:247) | at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:112) | at org.hibernate.reflection.java.JavaXFactory.classForName(JavaXFactory.java:153) | at org.hibernate.cfg.AnnotationConfiguration.add(AnnotationConfiguration.java:589) | ... 104 more | Here are the relevant files in my ear. estore-common-1.0.jar contains the POJO entities. estore-server-1.0.jar is the EJB jar that contains persistence.xml, mappings.xml and and a stateless session bean called OrderServiceBean. I was hoping that the POJO entity classes would be visible when parsing persistence.xml because they are in the classpath, but that does not seem to be true. | estore-1.0.ear | |---estore-common-1.0.jar | |---estore-server-1.0.jar | | |---mappings.xml | | |---META-INF | | | |---ejb-jar.xml | | | |---jboss.xml | | | `---persistence.xml | | `---samples | | `---estorejpa | | `---service | | |---OrderService.class | | `---OrderServiceBean.class | `---META-INF | application.xml | Here's my persistence.xml: | | | java:/estore | mappings.xml | | | | | | Here's my mappings.xml: | | eStore JPA Mappings | samples.estorejpa.domain | | | | | | | | | | | ... | | Any help would be much appreciated. Thanks. Naresh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165541#4165541 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4165541 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [EJB 3.0] - Re: Accessing EJB3 without a home interface
Answering my own question :-). This is how I was able to do it: | | | | | HelloWorldBean | HelloWorld | | | | | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165496#4165496 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4165496 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [EJB 3.0] - Re: Accessing EJB3 without a home interface
Thanks Andrew. I was able to use @RemoteBinding to control the JNDI name. Now I would like to move this specification only to jboss.xml. However, I could not find much documentation around it. I have already looked through the following URLs | * http://docs.jboss.org/ejb3/app-server/reference/build/reference/en/html/jboss_extensions.html | * http://docs.jboss.org/ejb3/app-server/reference/build/reference/en/html/jboss_deployment_descriptor.html | * http://docs.jboss.org/ejb3/app-server/reference/build/reference/en/html/partial_deployment_descriptors.html | Any help would be greatly appreciated. Thanks. Naresh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165487#4165487 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4165487 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [EJB 3.0] - Re: Accessing EJB3 without a home interface
Thanks Andrew. That was the issue! So I have couple of follow up questions: 1) Is this JNDI name (helloworldejb3-app-1.0/HelloWorldBean/remote) implementation specific? Is there any way to give it a more user friendly JNDI name, such as "HelloWorld"? 2) Is there a nicer way to get a reference to the EJB in the client? As you can see, I am explicitly creating a context and using it to look us the bean. Can @EJB or @Resource annotations be used on the remote client to lookup the EJB or the Context? Thanks. Naresh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4164087#4164087 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4164087 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [EJB 3.0] - Accessing EJB3 without a home interface
According to the EJB 3.0 Spec:
anonymous wrote :
| The requirement for Home interfaces has been eliminated. Session beans are
no longer required to have home interfaces. A client may acquire a reference to
a session bean through one of the mechanisms described in Chapter 8.
|
I am trying to do exactly that, i.e. to access an EJB 3 from a remote client
without a home interface. However I am getting a NameNotFoundException. Can
someone help me understand how to do this?
Here's my session bean interface:
| public interface HelloWorld {
| public String getHelloMessage();
| }
|
Here's the implementation:
| @Stateless @Remote
| public class HelloWorldBean implements HelloWorld {
|
| public String getHelloMessage() {
| return "Hello World";
| }
| }
|
Here's the call from the client:
| public class HelloWorldEjb3Client {
|
| public static void main(String[] args) {
|
| try {
| // Look up the HelloWorld home interface
| Object obj = getContext().lookup("HelloWorld");
| HelloWorld helloWorld =
| (HelloWorld)javax.rmi.PortableRemoteObject.narrow(obj,
HelloWorld.class );
|
| // Start using the HelloWorld object
| System.out.println(helloWorld.getHelloMessage());
| }
| catch (Exception e) {
| e.printStackTrace();
| }
| }
|
| public static final Context getContext() throws
javax.naming.NamingException {
| System.out.println("Connecting to JBoss");
| Hashtable env = new Hashtable();
| env.put(Context.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
| env.put(Context.PROVIDER_URL, "jnp://localhost:1099");
| env.put("java.naming.factory.url.pkgs",
"org.jboss.naming:org.jnp.interfaces");
| return new InitialContext(env);
| }
| }
|
The exception is:
| javax.naming.NameNotFoundException: HelloWorld not bound
|
Here's my ejb-jar.xml. It is essentially empty. I created it just because the
Maven EJB Plugin was complaining that it could not find a ejb-jar.xml. Since I
am using annotations, I don't believe that I should require this file.
|
|
| http://java.sun.com/xml/ns/javaee";
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
| xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd";
| version="3.0">
|
|
Looking at the JNDI tree, I believe that the HelloWorld bean has been deployed:
| Global JNDI Namespace
| +- helloworldejb3-app-1.0 (class: org.jnp.interfaces.NamingContext)
| | +- HelloWorldBean (class: org.jnp.interfaces.NamingContext)
| | | +- remote (proxy: $Proxy64 implements interface
samples.helloworldejb3.HelloWorld,interface org.jboss.ejb3.JBossProxy)
|
So what is the right way to access this bean from a remote client?
Thanks.
Naresh
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[jboss-user] [JBoss Seam] - Re: Service-Oriented Architecture and Seam
Thanks Gavin. I will start by creating a loosely-coupled (SOA) application and see how far I can take it. I will post on the forums in case I have questions or need clarifications. Thanks. Naresh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3999148#3999148 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3999148 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Seam] - Re: Service-Oriented Architecture and Seam
Thanks hstang and Norman for your opinions - very informative and useful. And yeah, Norman, I will "feel free to join in" as soon as I can :-), currently very busy with two other open source projects. BTW, I totally agree with your comment about over-architecting applications when there is absolutely no need to do so - this is so true for web applications. Fortunately or unfortunately, in my line of work there is 50-50 mix of web apps and enterprise apps (with Swing and other thick front-ends). So at least for me I cannot ignore entrprise apps and SOA. I would love to hear Gavin's comments and direction on this - at least before I jump in with both my feet :-). Thanks. Naresh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3998029#3998029 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3998029 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Seam] - Service-Oriented Architecture and Seam
I am a newbie to Seam and just getting started with it. First of all, I would like to commend Gavin for putting together a bold and compelling architecture that is indeed groundbreaking. The concepts around Seam contexts and use of stateful session beans to save state indeed yield a very simple and elegant design. Thanks Gavin! Having said that, I have a few questions about Seam's support for Service-Oriented Architectures. Looking at the booking example, I see that views have direct access to action beans (such as HotelBookingAction) and entity beans (such as Hotel). Also, business logic is generally embedded in the action beans. So here are my questions: 1) Looking through the SOA lens, can the action beans be thought of as services? For example, would it be ok to think of HotelBookingAction as HotelBookingService? 2) From a layered architecture perspective, do you think of the action beans as presentation-tier or middle-tier? I ask this because action beans seem to have presentation logic, e.g. the actions return navigation outcomes. Where is the boundary between the two layers? 3) How would one implement a physically separate front-end (say using Swing) that would access the booking application via a stateless web service. I know the docs say that ?you get to architect your own application and decide what the layers are and how they work together?, but it would be nice to have a real example showing these patterns. Once again, I am very impressed with the Seam framework. Answers to the above questions will make me feel even more comfortable. Thanks. Naresh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997681#3997681 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3997681 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
[jboss-user] [JBoss Seam] - Re: Showing updated entity on postback
Correct - the child is added fine, but the rendered page does not show the
newly added child. The reason is that the Thread and Posts are fetched from the
database during the Apply Request Values phase, and only later in the Invoke
Application phase the new Post is inserted.
Here's the source for the rendered page - Thread.xhtml:
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| #{post.body}
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This is ThreadHome:
| @Name("threadHome")
| public class ThreadHome extends EntityHome {
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| @In(value = "#{forumHome.instance}", required = false)
| Forum forum;
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| public void setThreadId(Long id) {
| setId(id);
| }
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| public Long getThreadId() {
| return (Long) getId();
| }
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| @Override
| protected Thread createInstance() {
| Thread result = new Thread();
| result.setForum(forum);
| return result;
| }
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| public List getPosts() {
| return getInstance() == null ? null : new
ArrayList(getInstance()
| .getPosts());
| }
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| }
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and finally here's PostHome, which contains the persist action which is called
from Thread.xhtml.
| @Name("postHome")
| public class PostHome extends EntityHome {
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| @In(value = "#{threadHome.instance}", required = false)
| Thread thread;
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| public void setPostId(Long id) {
| setId(id);
| }
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| public Long getPostId() {
| return (Long) getId();
| }
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| @Override
| protected Post createInstance() {
| Post result = new Post();
| result.setThread(thread);
| return result;
| }
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| @Override
| public String persist() {
| if (this.instance.getDateCreated() == null) {
| this.instance.setDateCreated(new java.util.Date());
| }
| return super.persist();
| }
| }
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View the original post :
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3996574#3996574
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[jboss-user] [JBoss Seam] - Showing updated entity on postback
I have created a seam application using seam-gen. I have a page that displays a master entity and its children. The page also allows the user to add a new child. However, when I click the submit button on the page to add the new child, the finally rendered page does not show this child. The reason is that the database is queried BEFORE the child is inserted. See below: | 17:22:47,702 INFO [STDOUT] before - RESTORE_VIEW(1) | 17:22:47,749 INFO [STDOUT] after - RESTORE_VIEW(1) | 17:22:47,765 INFO [STDOUT] before - APPLY_REQUEST_VALUES(2) | 17:22:47,780 INFO [STDOUT] Hibernate: select thread0_.ID as ID161_0_, thread0_.TITLE as TITLE161_0_, thread0_.FORUM_FKas FORUM3_161_0_ from chalktalk.thread thread0_ where thread0_.ID=? | 17:22:47,780 INFO [STDOUT] Hibernate: select posts0_.THREAD_FK as THREAD4_1_, posts0_.ID as ID1_, posts0_.ID as ID160_0_, posts0_.BODY as BODY160_0_, posts0_.THREAD_FK as THREAD4_160_0_, posts0_.DATE_CREATED as DATE3_160_0_ from chalktalk.post posts0_ where posts0_.THREAD_FK=? | 17:22:47,812 INFO [STDOUT] after - APPLY_REQUEST_VALUES(2) | 17:22:47,812 INFO [STDOUT] before - PROCESS_VALIDATIONS(3) | 17:22:47,859 INFO [STDOUT] after - PROCESS_VALIDATIONS(3) | 17:22:47,859 INFO [STDOUT] before - UPDATE_MODEL_VALUES(4) | 17:22:47,905 INFO [STDOUT] after - UPDATE_MODEL_VALUES(4) | 17:22:47,905 INFO [STDOUT] before - INVOKE_APPLICATION(5) | 17:22:48,015 INFO [STDOUT] Hibernate: insert into chalktalk.post (BODY, THREAD_FK, DATE_CREATED, ID) values (?, ?, ?, ?) | 17:22:48,046 INFO [STDOUT] after - INVOKE_APPLICATION(5) | 17:22:48,093 INFO [STDOUT] before - RENDER_RESPONSE(6) | 17:22:48,249 INFO [STDOUT] after - RENDER_RESPONSE(6) | How do I solve this issue/ I would like the newly rendered page to show the inserted child. Thanks. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3996537#3996537 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3996537 ___ jboss-user mailing list jboss-user@lists.jboss.org https://lists.jboss.org/mailman/listinfo/jboss-user
