Re: UserTransaction
hi Devid you have to prepare 3 files: 1) a .jar file containig the ejbs classes and the .xml descriptor (under Meta-inf) 2) a .war file containig your jsps, static files, and the web.xml file (under web-inf) 3) a .ear file containing the ejb .jar file the .war file and the application.xml file (under Meta-inf) 4) copy the .ear file under $ORION_HOME/applications 5) start orion hope this helps ciao Paolo David- wrote: hi guys, i m new to ejb and want to develop them using the orion server...could someone explain where do i put up my ejbs and my jsps..i mean what im looking for is a directory pattern...I tried alot of combos but...does not seem to work... thanks in advance David begin:vcard n:;nome x-mozilla-html:FALSE adr:;; version:2.1 email;internet:[EMAIL PROTECTED] fn:nome cognome end:vcard
Question regarding usage of the transaction context...
In HTTP world a single HttpServletRequest ties together execution of multiple Servlets on the same http request. It is similar to the way a Transaction ties together multiple API calls to various EJB objects. Like a common thread, both HttpServletRequest and a Transaction meander through various servlets or APIs respectively. Is there a way to achieve something similar to HttpServletRequest.getAttribute/setAttribute functionality in the EJB world in relation to Transactions? In other words, I would like to attach some values to existing transaction, and be able to retrieve these values in other methods (executing inside of the transaction boundry) without having to explicitly alter the interfaces of the EJBs. Thanks. -AP_
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RE: Collection or list as return ??
Thanks jeff for clearing this up.
I will let the program order my collection.
I already have defined about 10 own finders in orion-ejb-jar.xml (otherwise
it becomes to slow), so the application is already binded to orion and not
fully J2EE compliant, but to also let the Db do the sort trick... Hmmm I
little bit to much I think...
Eddie
From: Jeff Schnitzer [EMAIL PROTECTED]
Reply-To: Orion-Interest [EMAIL PROTECTED]
To: Orion-Interest [EMAIL PROTECTED]
Subject: RE: Collection or list as return ??
Date: Fri, 15 Jun 2001 16:57:20 -0700
You're right, there is no guarantee from the spec that other app servers
will return data in order or even allow you to specify the ORDER BY
clause in the finder sql. For that matter, there is no guarantee that
the database has a sql interface.
It gets even worse. The current spec for EJB-QL has no support for
ordering. The *only* way to write a 100% spec-compliant app which does
ordering is to implement the sorting yourself, in application code, in
Java.
It's pretty obvious to me at least that the people developing the EJB
specification have never actually used their ideas to develop a real
world application. Fortunately for us, container vendors are less
insulated from the eventual customers; it's a pretty safe bet that most
servers will let you configure the ordering in the database query
somehow. I wouldn't worry about it, but no, it's not standard.
Jeff Schnitzer
-Original Message-
From: Eddie Post [mailto:[EMAIL PROTECTED]]
Sent: Friday, June 15, 2001 3:48 PM
To: Orion-Interest
Subject: Re: Collection or list as return ??
Thanks Scott,
Thanks for the test (stupid that I didn't thought about that
;) ). So, yes
the returned Collection (read: ArrayList) is a sorted one.
But how general is this, as I can't find anything in the J2EE
spec about
this and is it possible that Orion will change this such that
it isn't
sorted anymore ?
What do you think ? Let the DB do the order by or just let
the sort method
of Collections do the trick ? I have noticed that the sort
method is very
fast.
Eddie
From: Scot Weber [EMAIL PROTECTED]
Reply-To: Orion-Interest [EMAIL PROTECTED]
To: Orion-Interest [EMAIL PROTECTED]
Subject: Re: Collection or list as return ??
Date: Fri, 15 Jun 2001 12:15:46 -0700
Eddie,
I just tested it . . .
MyTestHome.java __
public interface MyTestHome {
public Collection findAll () ...
}
mytest.jsp__
%= myTestHome.findall ().getClass () %
output_
java.util.ArrayList
peace - scot
Eddie wrote:
Hellu there,
Some time ago someone made a remark that it make no sense
putting a
ORDER
BY in the where clause in the orion-ejb-jar.xml, as the finder
methods of
the home interface do return a Collection, which are not sorted by
definition.
Hmmm makes sence, but if I play around with it and put a
ORDER BY id
ASC
or ORDER BY id DESC in the where clause in the
orion-ejb-jar.xml, to
fine
tune some queries, it does return sorted collections
Howcome ?? Does the finder methods return a sorted List as a J2EE
feature,
that is a subClass of a Collection, or is this just Orion. ??
The thing is that I like to optimize my queries, but if
this feature
isn't
J2EE for example I will have a problem with the following
upgrades if
it's
left out for some reason !!
BTW: in the J2EE spec, in section 10.5.6 they only talk about the
Collection
data type.!!
Some advise please ??
Eddie
--
scot weber - [EMAIL PROTECTED]
-
Given a choice between a folly and a sacrament, one should
always choose the folly -- because we know a sacrament
will not bring us closer to God and there's always a chance
that a folly will. - Erasmus
The only man who never makes a mistake is the man who
never does anything. - Theodore Roosevelt.
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Question About Clustering EJB's
Hi All, I've noticed that some asked for help on how-to cluster EJB's and got no reply. I thought I read in the documentation that this isn't possible, is it?? Or has someone got a workaround that wouldn't involve sharing a database, hard disk or anything that would be a single point of failure? Thanks, Oisin Kim
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RE: Question About Clustering EJB's
Oisin Kim, Look at the attached email ... its the last discussion on this. It looks like there is clustering, but not loadbalancing available for rmi from the rmi.xml configuration. The application will treat any ejbs on the cluster as one-to-one look-ups. Orion will go out and get the first ejb available on the cluster. See the docs on configuring rmi.xml (and also the note below). That is a kind-of failover, because if machine A goes down, and the myotherAejbs.jar are on machine B too, orion will go out and get the bean from machine B when it can't find machine A. But it doesn't go machine A then machine B for each remote instance of the bean. You could also specify the maximum number of instances of a bean, and as one machine gets loaded, orion would go to the next available machine...but that's not really loadbalancing. That is, you can set up your web-apps with ejbs, but let all of the ejbs be remote=true in the orion-application.xml file: ?xml version=1.0? !DOCTYPE orion-application PUBLIC -//Evermind//DTD J2EE Application runtime 1.2//EN http://www.orionserver.com/dtds/orion-application.dtd; orion-application deployment-version=1.5.2 ejb-module remote=true path=myotherAejbs.jar / ejb-module remote=true path=myotherBejbs.jar / ejb-module remote=true path=myotherCejbs.jar / web-module id=mysite path=mysite.war / ... other stuff ... /orion-application In the rmi.xml you would define your clustering: cluster host=230.0.0.1 id=123 password=123abc port=9127 username=cluster-user / Tag that is defined if the application is to be clustered. Used to set up a local multicast cluster. A username and password used for the servers to intercommunicate also needs to be specified. host - The multicast host/ip to transmit and receive cluster data on. The default is 230.0.0.1. id - The id (number) of this cluster node to identify itself with in the cluster. The default is based on local machine IP. password - The password configured for cluster access. Needs to match that of the other nodes in the cluster. port - The port to transmit and receive cluster data on. The default is 9127. username - The username configured for cluster access. Needs to match that of the other nodes in the cluster. regards, the elephantwalker -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Oisin Kim Sent: Saturday, June 16, 2001 9:51 AM To: Orion-Interest Subject: Question About Clustering EJB's Hi All, I've noticed that some asked for help on how-to cluster EJB's and got no reply. I thought I read in the documentation that this isn't possible, is it?? Or has someone got a workaround that wouldn't involve sharing a database, hard disk or anything that would be a single point of failure? Thanks, Oisin Kim Yes, I would be very glad if you could give me some hints on how to set this up. I have two orion servers behind a Foundry Server Irion load balancer/switch. I tried setting up the clustering, but was only able to get the HTTP clustering to work. Since I could not get my EJBs to be clustered, I configure the ejbs with exclusive-write-access=false, so the data is consistent. I also cannot use HTTP clustering because we use statefull session beans. How do I setup ejb clustering? thanks -Original Message- From: Lachezar Dobrev [mailto:[EMAIL PROTECTED]] Sent: Friday, June 15, 2001 1:18 AM To: Orion-Interest Subject: RMI Clustering done. Now want more. Hello. OK. I was able to (at last) run the RMI clustering. It now works. But... I have a question... Now I can put up a cluster, and when a bean does not exist on the server it is searched onthe cluster and used. However if it is deployed on more than one machine... It is not found on all of them, but rather on only one. For simplicity let's assume we have OrionA, OrionB, OrionC and OrionD. a) on all machines we have EnterpriseBean1 deployed. It accesses EnterpriseBean2 b) machine OrionA does not have EnterpriseBean2 deployed. c) machines OrionB, OrionC and OrionD have EnterpriseBean2 deployed. d) all machines have a RMI cluster set-up and working. (BTW) Because I needed quite some time to understand why the cluster was not working I am eager to help anyone, that needs help on the subject. If machine OrionA runs EnterpriseBean1 it will have to look-up EnterpriseBean2, which is used by EnterpriseBean1. There is no problem to find that bean (it exists on the cluster). However... Once EnterpriseBean2 is used on OrionC it keeps using that one. Why? Also. If we deploy EnterpriseBean2 on OrionA it is always found there and not on ANY other cluster machine. 1. How does Orion know on which machine to use the bean? The last one, that wakes up? 2. Is there a way to implement (at least) a round-robin technique to access the clustered bean on more than one server? I mean... When I look-up EnterpriseBean2... I would like to have a different
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RE: UserTransaction
I think the easiest way to learn is to use the visual tools that come with orion and create a project with the 'orion specific' directory structure. Use the tool for a little bit to see where it saves the classes, jsps and descriptors. Once you are confortable, put the visual tool away and do it manually (it still has a lot of bugs). I'm talking about the earassembler.jar -Original Message- From: David- [mailto:[EMAIL PROTECTED]] Sent: Friday, June 15, 2001 9:32 PM To: Orion-Interest Subject:Re: UserTransaction hi guys, i m new to ejb and want to develop them using the orion server...could someone explain where do i put up my ejbs and my jsps..i mean what im looking for is a directory pattern...I tried alot of combos but...does not seem to work... thanks in advance David
messages
Guys, why am I getting these messages? - ject: Undeliverable: Date: Sat, 16 Jun 2001 19:58:05 +0200 (CEST) From: Mail Delivery Subsystem [EMAIL PROTECTED] Reply-To: Orion-Interest [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] References: 1 Important information! This e-mail has not been delivered to [EMAIL PROTECTED] The receiver's mailbox is full. When the mailbox has been emptied you will be able to resend this e-mail. Best regards Telia Internet
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RE: debug jsp pages and where is the source
Hi Melissa, I didn't get the size for him. To be honest..I cam was working on content and part of my front-end framework the last few times. I will figure this out soon for him and let him know. Next weekend is bad for me to meet too..got two graduations and a special mothers-day/fathers-day dinner for my parents who are in from Florida. But sometime during the week, especially Wednesday night or Thursday would be fine. Site is up. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Scot Weber Sent: Thursday, June 14, 2001 5:27 PM To: Orion-Interest Subject: Re: debug jsp pages and where is the source Wendell, orion-web-app jsp-cache-directory=./persistence servlet-webdir=/servlet development=false-- Change this to true persistence-path=./persistence/state.ser Then . . . Assuming all things are equal and you have a default web app called 'devel-default-web-app' bound to the server you're working with, the persistence (and subsequently the .java files for the .jsp's) will be in the path: /u/orion/application-deployments/default/devel-default-web-app/persistence http://www.mydomain.com/index.jsp will produce the files /u/orion/application-deployments/default/devel-default-web-app/per sistence/index.jsp.java /u/orion/application-deployments/default/devel-default-web-app/per sistence/index.jsp.jspCache peace - scot Wendell Nichols wrote: Well I made the jsp page work by explicitly importing java.lang.String, as opposed to java.lang.* as I had done for other servers. Because this shouldn't bother other servers I'm ok with it. I still need to have access to the jsp.java files for debugging purposes before Orion will be an acceptable server for me... ... snip ... Any help would be appreciated.. Wendell Nichols Amdahl Software Ltd. and Fujitsu Apserv. -- scot weber - [EMAIL PROTECTED] - Given a choice between a folly and a sacrament, one should always choose the folly -- because we know a sacrament will not bring us closer to God and there's always a chance that a folly will. - Erasmus The only man who never makes a mistake is the man who never does anything. - Theodore Roosevelt.
Re: messages
Probably some guys got fired at Telia.com - Original Message - From: Boris Garbuzov [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] Sent: Saturday, June 16, 2001 7:23 PM Subject: messages Guys, why am I getting these messages? - ject: Undeliverable: Date: Sat, 16 Jun 2001 19:58:05 +0200 (CEST) From: Mail Delivery Subsystem [EMAIL PROTECTED] Reply-To: Orion-Interest [EMAIL PROTECTED] To: Orion-Interest [EMAIL PROTECTED] References: 1 Important information! This e-mail has not been delivered to [EMAIL PROTECTED] The receiver's mailbox is full. When the mailbox has been emptied you will be able to resend this e-mail. Best regards Telia Internet
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RE: debug jsp pages and where is the source
Kevin, Thanks for that - hope you have a great weekend, and don't post too many messages to the wrong lists! ;) -mike Mike Cannon-Brookes - Founder, Core Developer OpenSymphony - http://www.opensymphony.com The Open Source J2EE Component Project Latest News - Cache in on faster, more reliable JSPs http://www.javaworld.com/javaworld/jw-05-2001/jw-0504-cache.html -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Kevin Duffey Sent: Sunday, June 17, 2001 10:27 AM To: Orion-Interest Subject: RE: debug jsp pages and where is the source Hi Melissa, I didn't get the size for him. To be honest..I cam was working on content and part of my front-end framework the last few times. I will figure this out soon for him and let him know. Next weekend is bad for me to meet too..got two graduations and a special mothers-day/fathers-day dinner for my parents who are in from Florida. But sometime during the week, especially Wednesday night or Thursday would be fine. Site is up. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Scot Weber Sent: Thursday, June 14, 2001 5:27 PM To: Orion-Interest Subject: Re: debug jsp pages and where is the source Wendell, orion-web-app jsp-cache-directory=./persistence servlet-webdir=/servlet development=false-- Change this to true persistence-path=./persistence/state.ser Then . . . Assuming all things are equal and you have a default web app called 'devel-default-web-app' bound to the server you're working with, the persistence (and subsequently the .java files for the .jsp's) will be in the path: /u/orion/application-deployments/default/devel-default-web-app/persistence http://www.mydomain.com/index.jsp will produce the files /u/orion/application-deployments/default/devel-default-web-app/per sistence/index.jsp.java /u/orion/application-deployments/default/devel-default-web-app/per sistence/index.jsp.jspCache peace - scot Wendell Nichols wrote: Well I made the jsp page work by explicitly importing java.lang.String, as opposed to java.lang.* as I had done for other servers. Because this shouldn't bother other servers I'm ok with it. I still need to have access to the jsp.java files for debugging purposes before Orion will be an acceptable server for me... ... snip ... Any help would be appreciated.. Wendell Nichols Amdahl Software Ltd. and Fujitsu Apserv. -- scot weber - [EMAIL PROTECTED] - Given a choice between a folly and a sacrament, one should always choose the folly -- because we know a sacrament will not bring us closer to God and there's always a chance that a folly will. - Erasmus The only man who never makes a mistake is the man who never does anything. - Theodore Roosevelt.
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RE: Orion can't find Cloudscape database
this is an example of .bat file for orion cloudscape java -Dcloudscape.system.home=C:\YOUR\DATABASE -Djdbc.connection.debug=true -jar orion.jar -Original Message- From: Lou Farho [SMTP:[EMAIL PROTECTED]] Sent: 14 2001 18:49 To: Orion-Interest Subject: Orion can't find Cloudscape database How do I tell Orion where to find my Cloudscape database? Here is what I have for the data source: data-source class="com.evermind.sql.DriverManagerDataSource" name="Cloudscape" location="jdbc/CloudscapeCoreDS" xa-location="jdbc/xa/CloudscapeXADS" ejb-location="jdbc/myDS" connection-driver="COM.cloudscape.core.JDBCDriver" username="" password="" url="jdbc:cloudscape:myDB" inactivity-timeout="30" / Lou Farho Certes Solutions, Inc. 2485 W MAIN ST SUITE 205 Littleton, CO 80120 303.798.8079 File: Louis Farho.vcf
