July 2009 - jboss-dev-forums - Jboss List Archives

[Design the new POJO MicroContainer] - Re: Uninstall OnDemand context if there are no more dependen

by kabir.khan＠jboss.com

Sure, I can change it. There are several other examples of this though, or are they subtly different? | protected void change(ControllerContext context, ControllerState state, boolean trace) throws Throwable | { | int currentIndex = states.indexOf(fromState); | int requiredIndex = states.indexOf(state); | ... | while (currentIndex > requiredIndex) | { | uninstallContext(context, trace); | currentIndex = states.indexOf(context.getState()); | } | } | | protected void uninstallContext(ControllerContext context, ControllerState toState, boolean trace) | { | int targetState = states.indexOf(toState); | if (targetState == -1) | log.error("INTERNAL ERROR: unknown state " + toState + " states=" + states, new Exception("STACKTRACE")); | | while (true) | { | ... | if (targetState > currentState) | return; | else | uninstallContext(context, trace); | } | } | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243699#4243699 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243699

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[Design the new POJO MicroContainer] - Re: Uninstall OnDemand context if there are no more dependen

by alesj

"kabir.khan(a)jboss.com" wrote : | | | int requiredIndex = states.indexOf(item.getWhenRequired()); | | int actualIndex = states.indexOf(dependsContext.getState()); | | if (requiredIndex <= actualIndex) | | | | | Such code should not exist, as it depends on the impl details (== List) of the states model. You should do this state checks against ControllerStateModel. e.g. for tree states the model will change, but the rest of the code won't have to be fixed/modified ;-) (at least not in a hard to detect/find it way) View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243689#4243689 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243689

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[Design the new POJO MicroContainer] - Re: Parallel deployments

by kabir.khan＠jboss.com

When looking at http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243667 I realised that I have not tested/handled the following scenario: *Install ctx A asynchronously *Uninstall ctx A while is is being installed asynchronously. I will add support for this View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243669#4243669 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243669

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[Design the new POJO MicroContainer] - Uninstall OnDemand context if there are no more dependencies

by kabir.khan＠jboss.com

I have knocked up a prototype for https://jira.jboss.org/jira/browse/JBKERNEL-4. A few of the existing tests fail since the order of uninstall has changed. What I am doing is: | protected void uninstallContext(ControllerContext context, boolean trace) | { | //Existing code | | DependencyInfo dependencies = context.getDependencyInfo(); | if (dependencies != null) | { | Set<DependencyItem> iDependOn = dependencies.getIDependOn(null); | if (iDependOn.isEmpty() == false) | { | for (DependencyItem item : iDependOn) | { | if (item.isResolved()) //TODO Is this check necessary | { | Object name = item.getIDependOn(); | ControllerContext other = getContext(name, null); | if (other == null) | { | log.warn("Could not find dependency while uninstalling on demand contexts for " + item); | continue; | } | if (other.getMode() != ControllerMode.ON_DEMAND) | continue; | | DependencyInfo otherDependencies = other.getDependencyInfo(); | if (otherDependencies == null) | continue; | | Set<DependencyItem> dependsOnOther = otherDependencies.getDependsOnMe(null); | boolean isRequired = false; | for (DependencyItem dependsOnOtherItem : dependsOnOther) | { | ControllerContext dependsContext = getContext(item.getName(), null); | if (dependsContext == null) | { | log.warn("Could not find dependency while uninstalling on demand contexts for " + item); | continue; | } | | int requiredIndex = states.indexOf(item.getWhenRequired()); | int actualIndex = states.indexOf(dependsContext.getState()); | if (requiredIndex <= actualIndex) | { | isRequired = true; | break; | } | } | if (!isRequired) | { | //For some reason uninstallContext() uninstalls to the state below the passed in one, add one | int index = states.indexOf(ControllerMode.ON_DEMAND.getRequiredState()); | index++; | ControllerState state = states.get(index); | uninstallContext(other, state, trace); | } | } | } | } | } | } | I'll look into the failing tests and fix those, which might mean needing to change the tests themselves in trunk. The JIRA issue mentions that the uninstall of the OnDemand context should happen asynchronously, which will complicate things, but will be possible if a real requirement, I'll try to fix the tests first though. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243667#4243667 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243667

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[TODO - DEVELOPMENT] - Sequential Mode in Decision Table

by orbit007in

As per the JBoss Project Documentation it is clear that if we set SEQUENTIAL = true then It will going to execute rules in Top to Down order but what if we make this flag false and even not set this field at all? if SEQUENTIAL = false. Will it confirm Bottom to Top order of execution? I have observed that if not set this SEQUENTIAL flag, by default rules get executed Bottom to Top order. Does this assumption is correct? Does JBoss always execute rules from Bottom to Top order if we not set this flag ( SEQUENTIAL ) ? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243593#4243593 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243593

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[TODO - DEVELOPMENT] - Default Sequential Mode in Decision Table

by orbit007in

As per the JBoss Project Documentation it is clear that if we set SEQUENTIAL = true then I will going to execute rules in Top to Down order but what if we make this flag false and even not set this field at all? if SEQUENTIAL = false. Will it confirm Bottom to Top order of execution? I have observed that if not set this SEQUENTIAL flag, by default rules get executed Bottom to Top order. Does this assumption is correct? Does JBoss always execute rules from Bottom to Top order if we not set this flag ( SEQUENTIAL ) ? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243592#4243592 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243592

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: Creation of topic @ runtime

by timfox

And, by the way, this is a user question, *not* a design question and should have been posted in the user forum. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243586#4243586 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243586

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: Creation of topic @ runtime

by timfox

The name of the MBean you are looking for is in 1.4 is ** jboss.messaging:service=ServerPeer ** Note that this name has *changed* from 1.2 so you will need to look in a different place in jmx-console View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243585#4243585 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243585

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: Creation of topic @ runtime

by timfox

"desuraghu" wrote : I am referring to ServerPeerMBean. In 1.4 I can ServerPeer class. | | From jmx-console, I can see and access the ServerPeer MBean. | | But my requirement is, I need to create a topic at runtime. | | To create a topic, i need ServerPeer instance. | | I am trying to create a topic in my application at runtime. | | Using jboss-MQ i am able to locate the DestinationManageMBean. In the similar way I am trying to locate ServerPeerMBean. But this interface is not present in 1.4. You are mistaken, this interface *is* present in 1.4. I already posted the MBean descriptors in my previous post. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243584#4243584 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243584

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[Design of Messaging on JBoss (Messaging/JBoss)] - Re: Creation of topic @ runtime

by desuraghu

I am referring to ServerPeerMBean. In 1.4 I can ServerPeer class. >From jmx-console, I can see and access the ServerPeer MBean. But my requirement is, I need to create a topic at runtime. To create a topic, i need ServerPeer instance. I am trying to create a topic in my application at runtime. Using jboss-MQ i am able to locate the DestinationManageMBean. In the similar way I am trying to locate ServerPeerMBean. But this interface is not present in 1.4. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4243582#4243582 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4243582

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jboss-dev-forums July 2009