February 2007 - jboss-dev-forums - Jboss List Archives

[Design of JCA on JBoss] - Re: JBAS-3321 - TransactionTimeout from EJB container

by weston.price＠jboss.com

Exactly. Every situation/scecnario you have posed is not relevant *right now*. The fix from the task simply allows for a transaction timeout for MDB's being that we are directly controlling the transaction demarcation which is not interceptor/AOP based (though I have a working version of this). For the other scenarios (ActiveMQ, user inflow RARs), I am not sure this even makes sense being that 1) We have no control over this and a specialized MEF is really not applicable to ActiveMQ's implementation anyway. How exactly would this help ActiveMQ? 2) Same goes for other inbound RAR's that we do not control. How would a specialized MEF help this scenario? Do you expect them to case the MEF to a JBoss specific implementation and get the transaction timeout? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013671#4013671 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4013671

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[Design of JCA on JBoss] - Re: JBAS-3321 - TransactionTimeout from EJB container

by adrian＠jboss.org

Of course, the getTransactionTimeout(Method) should really be on the spec defined MessageEndpointFactory interface rather having to define your own extension. But that's one for JCA2.0/JavaEE6 :-) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013664#4013664 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4013664

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[Design of JCA on JBoss] - Re: JBAS-3321 - TransactionTimeout from EJB container

by adrian＠jboss.org

NOTE: I don't have a problem per se with there being a transaction timeout in the ActivationSpec. But this is very specialised. One example would be where the inbound rar does transaction inflow. In that case, it could use the ActivationSpec to pass this parameter to the ExecutionContext.setTransactionTimeout(). But in the above case, it is more likely that the transaction timeout config would be coming from the same place as the inbound transaction? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013662#4013662 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4013662

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[Design of JCA on JBoss] - Re: JBAS-3321 - TransactionTimeout from EJB container

by adrian＠jboss.org

"weston.price(a)jboss.com" wrote : | Why? | Because your solution is not generic. It only works for the JBoss/JMS resource adapter. And it only works for JMS because there is only one delivery method | javax.jms.MessageListener.onMessage(Message) | Put another way, your solution does not work in the following cases: 1) ActiveMQ's inbound resource adapter 2) Something that is not JMS 3) Something that has more than one delivery method in the listener interface. To be generic, it must cater for the case where most inbound transactions are started, this is in the MessageEndpoint, or more accurately in the MessageEndpointInterceptor, the later being an implementation of JBoss. It must also cater for inflow rars that have more than one listener method or interfaces. That is why there is "java.lang.reflect.Method" on the isDeliveryTransacted() callback. The same should be true for the getTransactionTimeout() callback into the container. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013657#4013657 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4013657

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[Design of JCA on JBoss] - Re: JBAS-3321 - TransactionTimeout from EJB container

by weston.price＠jboss.com

anonymous wrote : | The transaction timeout is not a property of the activation spec. | Why? I simply don't see the problem in the JMS/JCA adapter allowing for this. anonymous wrote : | It is a property of the MDB container which is represented in JCA land | by the message endpoint factory (MEF). | Again, why? There is simply nothing in the JCA spec to suggest this. anonymous wrote : | What is required is a JBoss specific interface that the MEF implements | that allows you to retrieve the transaction timeout for a method, | i.e. similar to the isDeliveryTransacted(Method) | So, instead of using the ActivationSpec, you use the MEF. The property is the same, you are just getting it from somewhere else. We have plenty of JBoss specific properties in our ActivationSpec, I see no need to subclass the MEF to simply pass as integer. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013649#4013649 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4013649

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[TODO - DEVELOPMENT] - Re: Recursion in rules execution

by vivonpereira

You have to be very careful while using the 'OR' condition (||) in the JBoss rules. In the documentation that the JBoss have provided, they do mention that, every OR will be treated as a seperate sub-rule by itself. Hence, if u have a rule like this: condition1 || condition2, then the result is going to be executed twice for the two specified conditions. Hence, i recommend u judiciously use the or condition. Bcoz, if u have a condition like the one below, then the result would be totally wrong: rule test when t:Test(age > 25 || skill == 'IT') then t.setWage(t.getWage() * 1000); end The result should have been 1000 but it would give 1000000. There is one more point I have noticed in ur rule file is that, there are more than one rule containing modify method. When I wrote my rule file, it did not allow me to have more than one non-exclusive rule to have a modify method. Could u tell me, didnt it throw u any error. Since it hangs my code when it finds two rules having modify method in the same drl file. The java code is the same as urs. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013647#4013647 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4013647

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[TODO - DEVELOPMENT] - JBoss Rules - List of Rules passed or failed

by vivonpereira

Could anyone tell me, is there any function or API in JBoss Rules, that would give me a list of rules that have passed and also a list of rules that have failed. Many other Third party Rules product do give this functionality, i wanted to know, whether the same is provided by JBoss. If it is possible, please do mention which api does that. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013637#4013637 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4013637

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[Design of JBoss Web Services] - Web based generic webservice client

by maeste

Hi all, Alessio Soldano and me have just released as web application(seam) an open source generic client for web services. The idea is to generate on the fly rich html form (structuring data as tree) for soap request and response. The aplication is designed to be used also by non-programmer people (QA tests) It is an alpha quality code, but it seems to work with a lot of webservices deployed on http://jbossws.demo.jboss.com:8080 (for Heiko: we fixed it :) ). We wrote the core more than 2 years ago for an internal project (based on wsdl4j and, now, some jbossws apis). Now we refactored it to beautify the user interface and we are releasing it with LGPL because we think it could be useful for a lot of people. If you want to take a look we have deeper description, screenshots and an onlinedemo on www.javalinuxlabs.org. We have created a user jbwsdev/jbwsdev with already registered some wsdls taken from jbossws.demo.jboss.com with a comment for non-working ones. BTW on www.javalinuxlabs.org we have also an online demo of LMS, another service we developed (Web based Tcp Monitor like tool) and discussed here some weeks ago: http://www.jboss.com/index.html?module=bb&op=viewtopic&t=94980 Have fun View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013623#4013623 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4013623

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[Design of JCA on JBoss] - Re: JBAS-3321 - TransactionTimeout from EJB container

by adrian＠jboss.org

This goes back to what we discussed in Boston with the EJB3 team. JCA should provide an abstract MessageEndpointFactory implementation with "abstract" methods that containers can implement when they subclass. The relevant callbacks would be: | // From the spec | public boolean isDeliveryTransacted(Method) | { | return false; | } | | // Get the transaction timeout (the subject of feature request) | public long getTransactionTimeout(Method) | { | return 0l; | } | | // Does the container provide a context classloader | // for switching during beforeDelivery | public ClassLoader getClassLoader() | { | return null; | } | In practice there should be two implementations provided by JCA 1) That uses the old interceptors/proxy factory from EJB2 2) That uses the aop interceptors for EJB3 and POJO The MessageEndpointInterceptor(s) for each would be maintained by the JCA project. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013619#4013619 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4013619

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[Design of JMX on JBoss (JBoss/JMX)] - Paramater changes impact on JBoss through JMX console or Twi

by mahendra_kutare

Hi, I am using JBoss version 4.0.4 GA for my test run with JDK 1.5.0.10. I would like to understand the following - 1) If i change the MaxPoolSize (Count of Server threads) attribute value using Pooled invoker configuration from JMX console or twiddle - then what will be the impact mechanism of this change ? i.e. a) Say for example i have initial value of MaxPoolSize as 50. I then increase it to 70 how and will JBoss behave ? - Will it change the threads to 70 immediately, even if say the workload would not require more threads or it will wait till the workload requires more threads and then increase the count to 70 in this case ? - Essentially what policy or algorithm does the JBoss application server uses if any parameter changes at container level or web server level in configuration files through JMX or twiddle ? b) Say for example i have initial value of MaxPoolSize as 50. I then decrease it to 30 how and will JBoss behave internally ? Similar question regarding JBoss behaviour as a) Please do respond to this as my tests are related to changing the parameters and their impact, hence its imperative to know what policy or algorithm does JBoss uses internally on any changes through JMX console or twiddle. If any more information on my environment is required, i would be glad to put that across. Regards Mahendra View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4013613#4013613 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4013613

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jboss-dev-forums February 2007