OpenEJB Startup Performance
Hi All, We are creating a offline version of an online application using Oracle Lite, i.e. basically our J2EE application will work in a stand-alone mode on a laptop with the embedded Oracle Lite database. Since, Oracle Lite comes in-built with it's own web-serve (WebToGo) we decided to embed openEJB as our EJB container intra-vm so that we could deploy our EAR as is. It works like a charm!!! I had a couple of questions(Sorry, we are new with openejb): 1) Is it correct to use openejb in such a way, since it will be used in production environments. (Any tips on tuning could help). 2) OpenEJB builds up the application assembly everytime we start the webtogo server(it is a disguised Oracle 10.1.3 Standalone OC4J Server) on the client. This does take 2-3 minutes due to the number of EJB's we have. Is there a way for OpenEJB to persist this application assembly so that when it startups a second time, it does not build the entire assembly again. This way there will be no delay if the server has to be re-started. Cheers, Vikrant Yagnick Software Designer MajescoMastek Ltd | Mastek Millennium Center,Millennium Business Park, Mahape, Navi Mumbai 400-710 | (T) 91 22 6695 Extn - 5230 | Mobile: +919833490598 | www.mastek.com MASTEK LTD. Mastek is in NASSCOM's 'India Top 20' Software Service Exporters List. In the US, we're called MAJESCOMASTEK ~~ Opinions expressed in this e-mail are those of the individual and not that of Mastek Limited, unless specifically indicated to that effect. Mastek Limited does not accept any responsibility or liability for it. This e-mail and attachments (if any) transmitted with it are confidential and/or privileged and solely for the use of the intended person or entity to which it is addressed. Any review, re-transmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. This e-mail and its attachments have been scanned for the presence of computer viruses. It is the responsibility of the recipient to run the virus check on e-mails and attachments before opening them. If you have received this e-mail in error, kindly delete this e-mail from desktop and server. ~~
Re: Chaining InitialContexts ???
Hello David David Blevins wrote: On Sep 1, 2009, at 6:07 AM, uglything wrote: Hello everyone. After having worked on something else (conception mainly with loads of UML2) I'm coming back to the Plain Old Java Coding... I'm willing to give a try to the @Remote concepts which I don't know at all. Basically, I have an OpenEJB + Tomcat combo hosting my server application which itself contains many @Remote classes. On the other hand I want the same combo hosting my client application which rely on the remoted classes from the server. I would like to know if ther is some kind of configuration to let the server InitialContext merge into the client InitialContext might sound ridiculous and/or naïve... Just let me know... but as far as I've searched I don't find anything of interrest... What I've done so far - 80% of code monkey copy/paste your examples - is starting a OpenEJB + Tomcat server and starting a JUnit test case with a RemoteInitialContextFactory linked to the server through httpejbd (I guess) whithout problem. I can easily hit the remoted beans that works great. But this initial context does not discover my client ejbs as the LocalInitialContextFactory does. If by client ejbs you mean the @LocalClient injection support, then right, the RemoteInitialContextFactory doesn't yet support that. We do plan to add support for an @RemoteClient which will work with the RemoteInitialContextFactory in a similar way. There's a jira you can watch if you want to keep updated on progress there: http://issues.apache.org/jira/browse/OPENEJB-1025 https://issues.apache.org/jira/secure/ViewIssue.jspa?id=12425175watch=true (for notifications) I'll take a closer look to @LocalClient which I overlooked. But as you point out, this will not apply directly to my issue. David Blevins wrote: On the other hand, I didn't find anything to tell a LocalInitialContextFactory to search also into a remote directory... So far my only guess is to manually create a Locator-like object wrapping a RemoteICF and make manual lookups into it. Maybe it's just the way to go... Right, at the moment a service locator is the best approach. http://openejb.apache.org/3.0/service-locator.html We have some code in the openejb-client jar you can use or copy: http://svn.apache.org/repos/asf/openejb/tags/openejb-3.1.1/server/openejb-client/src/main/java/org/apache/openejb/client/ServiceLocator.java http://svn.apache.org/repos/asf/openejb/tags/openejb-3.1.1/server/openejb-client/src/main/java/org/apache/openejb/client/GenericServiceLocator.java Great, these classes seem to fit my needs ! thanks. David Blevins wrote: Another question arises from that... Is there any support to propagate a transaction started from the client to the server ? It seems that this is an optional requierement of the EJB3 specs... There hasn't been any demand for it, but if you need it we can put it on the list. Well I think it could be a valuable add to OpenEJB (not mentioning my own interrest :thinking: ). If I am allowed to speak my dreams, I can easily think of an embedded OpenEJB client (with RemoteICF) as a seamless gate to the server it links to... Providing that : - the RemoteICF is able to manage it's own EJBs (just like the LocalICF does) and inject them with EJBs coming from the server - the server is able to participate in transactions managed by the client Well this might be a terrible idea, let me know... David Blevins wrote: BTW : Is there any registering to do to post answers to other people's questions ? I would like to pay back a little for your great support by helping some people here (up to my little knowledge though) That's fantastic. We can always use more help on the user list and elsewhere. We're a small team and every bit helps. Feel free to jump in anytime. You can post through nabble or by sending mail directly to the list. -David Gr8, I'll try to prove myself useful :-D Cheers and thanks for your support ! Juan Manuel -- View this message in context: http://www.nabble.com/Chaining-InitialContexts-tp25240021p25331122.html Sent from the OpenEJB User mailing list archive at Nabble.com.
Re: OpenEJB Startup Performance
Hey, I'm no EJB master either, but I can answer your questions with what I do know. 1. Perfectly fine. If you run it in something like Geronimo, it's basically just embedded in Geronimo. Your web server is nothing more than a Java Application, and OpenEJB has 2 modes, Standalone and Embedded (I think there is another one I can't recall). So you're just initializing the OpenEJB application inside your VM, and have the same stability/functionality provided in any other mode. In fact, I would recommend doing this with OpenEJB any day. 2. How many EJBs do you have for it to take this long? If you have a huge classpath you can try trimming down the search to only the desired JARs. See: http://openejb.apache.org/3.0/application-discovery-via-the-classpath.html. Alternatively you can try and specify static bean configurations in ejb-jar.xml. They would be something like this: ?xml version=1.0 encoding=UTF-8 ? ejb-jar xmlns=http://java.sun.com/xml/ns/javaee; version=3.0 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; enterprise-beans session ejb-nameTestBean/ejb-name localnet.kunye.test.TestLocal/local remotenet.kunye.test.TestRemote/remote /session session ejb-namePersonnelBean/ejb-name localnet.kunye.platform.personnel.PersonnelLocal/local remotenet.kunye.platform.personnel.PersonnelRemote/remote /session /enterprise-beans /ejb-jar When you do this all the beans that are listed will be loaded from XML (no annotation interpretation afaik) and the rest of the beans will be loaded the normal way. What you can do is perhaps hook in a compile-time task to generate this list for you. If you already have such a file with other configurations, you can perhaps make a template and generate the ejb-jar.xml everytime you compile. I'm not sure how much this will help. I've never really had to deal with this problem. The most EJBs I've loaded was around 50 I think, and it went quick. Some of the other guys might be able to help with this. Q On Mon, Sep 7, 2009 at 2:01 PM, Vikrant Yagnick vikrant.yagn...@mastek.com wrote: Hi All, We are creating a offline version of an online application using Oracle Lite, i.e. basically our J2EE application will work in a stand-alone mode on a laptop with the embedded Oracle Lite database. Since, Oracle Lite comes in-built with it's own web-serve (WebToGo) we decided to embed openEJB as our EJB container intra-vm so that we could deploy our EAR as is. It works like a charm!!! I had a couple of questions(Sorry, we are new with openejb): 1) Is it correct to use openejb in such a way, since it will be used in production environments. (Any tips on tuning could help). 2) OpenEJB builds up the application assembly everytime we start the webtogo server(it is a disguised Oracle 10.1.3 Standalone OC4J Server) on the client. This does take 2-3 minutes due to the number of EJB's we have. Is there a way for OpenEJB to persist this application assembly so that when it startups a second time, it does not build the entire assembly again. This way there will be no delay if the server has to be re-started. Cheers, Vikrant Yagnick Software Designer MajescoMastek Ltd | Mastek Millennium Center,Millennium Business Park, Mahape, Navi Mumbai 400-710 | (T) 91 22 6695 Extn - 5230 | Mobile: +919833490598 | www.mastek.com MASTEK LTD. Mastek is in NASSCOM's 'India Top 20' Software Service Exporters List. In the US, we're called MAJESCOMASTEK ~~ Opinions expressed in this e-mail are those of the individual and not that of Mastek Limited, unless specifically indicated to that effect. Mastek Limited does not accept any responsibility or liability for it. This e-mail and attachments (if any) transmitted with it are confidential and/or privileged and solely for the use of the intended person or entity to which it is addressed. Any review, re-transmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. This e-mail and its attachments have been scanned for the presence of computer viruses. It is the responsibility of the recipient to run the virus check on e-mails and attachments before opening them. If you have received this e-mail in error, kindly delete this e-mail from desktop and server. ~~ -- Quintin Beukes
Problem when scanning for applications in a Manifest Classpath
Hey, I have an odd problem when doing unit tests. In production we have a bunch of EJB JAR files and a bunch of app library dependencies. The one library specifically causes a cyclic dependency. Which is fine, since it's a runtime dependency and doesn't need to have it compiled against. So everything compiles fine. When in production it all works fine, because everything is on the classpath only once. When i do unit tests in netbeans though, I have dependencies configured, and this causes the following. KMSPlatform-ejb contains persistence unit KMSPlatform-PU, and depends on app library X. It also has a special persistence.xml when doing unit tests, since they transaction manager is different. App library X depends on KMSPlatform-ejb So when I run the application I have the test classpath for the EJB project, and X added onto this classpath. The problem is that Initial Context Properties - Start -- listing properties -- java.naming.factory.initial=net.kunye.platform.appclient.context testPool.UserName=kms testPool=new://Resource?type=DataSource net.kunye.platform.tests.appclient.auth.admin.pass=kmsTESTpassword net.kunye.platform.tests.appclient.auth.admin.username=testuser-admin testPool.Password=kms testPool.JdbcUrl=jdbc:postgresql://localhost:5432/test... hibernate.hbm2ddl.auto= net.kunye.platform.tests.appclient.auth.lamp-room.username=testuser-lamproom hibernate.show_sql=true net.kunye.platform.tests.appclient.auth.lamp-room.pass=kmsTESTpassword testPool.JdbcDriver=org.postgresql.Driver Initial Context Properties - End Apache OpenEJB 3.0build: 20080408-04:13 http://openejb.apache.org/ INFO - openejb.home = /home/quintin/dev/kms/KMSPlatform/KMSPlatform-ejb INFO - openejb.base = /home/quintin/dev/kms/KMSPlatform/KMSPlatform-ejb INFO - Configuring Service(id=Default Security Service, type=SecurityService, provider-id=Default Security Service) INFO - Configuring Service(id=Default Transaction Manager, type=TransactionManager, provider-id=Default Transaction Manager) INFO - Configuring Service(id=testPool, type=Resource, provider-id=Default JDBC Database) INFO - Configuring Service(id=Default JDK 1.3 ProxyFactory, type=ProxyFactory, provider-id=Default JDK 1.3 ProxyFactory) INFO - Found EjbModule in classpath: /home/quintin/dev/kms/KMSPlatform/ApplicationClientLib/dist/lib/KMSPlatform-ejb.jar INFO - Found EjbModule in classpath: /home/quintin/dev/kms/KMSPlatform/KMSPlatform-ejb/build/jar INFO - Configuring app: /home/quintin/dev/kms/KMSPlatform/ApplicationClientLib/dist/lib/KMSPlatform-ejb.jar INFO - Configuring Service(id=Default Stateless Container, type=Container, provider-id=Default Stateless Container) INFO - Auto-creating a container for bean SiteBean: Container(type=STATELESS, id=Default Stateless Container) INFO - Configuring PersistenceUnit(name=KMSPlatform-PU, provider=org.hibernate.ejb.HibernatePersistence) INFO - Auto-creating a Resource with id 'testPoolNonJta' of type 'DataSource for 'KMSPlatform-PU'. INFO - Configuring Service(id=testPoolNonJta, type=Resource, provider-id=testPool) INFO - Adjusting KMSPlatform-PU jta-data-source to 'testPool' INFO - Adjusting KMSPlatform-PU non-jta-data-source to 'testPoolNonJta' INFO - Loaded Module: /home/quintin/dev/kms/KMSPlatform/ApplicationClientLib/dist/lib/KMSPlatform-ejb.jar INFO - Configuring app: /home/quintin/dev/kms/KMSPlatform/KMSPlatform-ejb/build/jar INFO - Configuring PersistenceUnit(name=KMSPlatform-TestPU, provider=org.hibernate.ejb.HibernatePersistence) INFO - Adjusting KMSPlatform-TestPU non-jta-data-source to 'testPoolNonJta' INFO - Loaded Module: /home/quintin/dev/kms/KMSPlatform/KMSPlatform-ejb/build/jar INFO - Assembling app: /home/quintin/dev/kms/KMSPlatform/ApplicationClientLib/dist/lib/KMSPlatform-ejb.jar INFO - PersistenceUnit(name=KMSPlatform-PU, provider=org.hibernate.ejb.HibernatePersistence) INFO - Undeploying app: /home/quintin/dev/kms/KMSPlatform/ApplicationClientLib/dist/lib/KMSPlatform-ejb.jar ERROR - Application could not be deployed: /home/quintin/dev/kms/KMSPlatform/ApplicationClientLib/dist/lib/KMSPlatform-ejb.jar org.apache.openejb.OpenEJBException: createApplication.failed [/home/quintin/dev/kms/KMSPlatform/ApplicationClientLib/dist/lib/KMSPlatform-ejb.jar]: org/apache/geronimo/kernel/KernelRegistry at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:592) at org.apache.openejb.assembler.classic.Assembler.buildContainerSystem(Assembler.java:338) at org.apache.openejb.assembler.classic.Assembler.build(Assembler.java:250) at org.apache.openejb.OpenEJB$Instance.init(OpenEJB.java:149) at org.apache.openejb.OpenEJB.init(OpenEJB.java:288) at org.apache.openejb.OpenEJB.init(OpenEJB.java:267) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at
