RE: Redirection
Sure it is. I am not sure if its possible in Servlet 2.1/2.2 to "path map"
to a specific controller servlet, but I think it is. I use extension mapping
myself. But basically you would do something in your web.xml file like:
servlet
servlet-namecontroller/servlet-name
display-namecontroller/display-name
servlet-classcom.mvc.servlets.ControllerServlet/servlet-class
/servlet
servlet-mapping
servlet-namecontroller/servlet-name
url-pattern/ss//url-pattern
/servlet-mapping
Now, anytime the /ss/ appears in the request path, it should pass everything
after the /ss/ as path info to the controller servlet its mapped to. Thus,
anytime the /ss/ is in your path, the servlet you map it to is invoked, and
I think the request.getPathInfo() or one of those calls returns everyting
after the /ss/. Therefore, a link like:
a href="/web-app-context/ss/DoThis"Click/a
Should call your servlet, and you would recieve a DoThis as a String
parameter or something.
Once you have that, you call upon your EJB session bean (or some business
logic class) that looks up in the database and returns you a path to go to.
Then you simply do:
try
{
request.getRequestDispatcher(url-from-database).forward(request,response);
}
catch(Exception e)
{
}
That will forward you to the new URL.
Ask if you have any questions..but that should help a bit I hope.
Hi everyone,
Since it seems that the list is alive and well, although with very
little traffic, I would like to ask a question which has been bothering
me for a while.
I am trying to do what I would define as dynamic redirection. What that
means is that if someone writes an URL like http://myserver/name, I
would like to look for "name" in a database and redirect the user to
some other URL. This would allow me to avoid modifying manually the
configuration file every time a mapping is added,removed or modified.
Is this possible? Any suggestions?
Thanks in advance and Happy New Year!
Huibert Aalbers
Re: JSP vs Servlet
Well, Ernst did a fine job, but it'd be better if he'd done those things in XML... *runs* Anyway, IMHO adding a methodology on top of the purpose of the article - showing the CMP stuff - would have been yet more to learn. I'm of the opinion that something like that needs to show off one aspect of the technology rather than all aspects, so MVC - while useful - would have been yet another thing to track. BTW, Ernst *is* in the process of writing a DTD for the primers. :) On Fri, 5 Jan 2001, Fyffe Carl wrote: I went to jollem.com and read the CMP Primer. Good read. But it got me thinking about a topic that concerns most people that are in large development groups. Seperation of code and html. Proper MVC calls for the code to be in the controller while there is little code in the view portion of the application. This allows the designers to design and the coders to code. Were the rules broken for convience or has a new methodology taken over? It seems to me that the CMP Primer would have been easier to read and understand if MVC had been used. This one short coming can easily overlooked to find a gem of an article. Are there other primers of jollem.com's caliber? What are some useful URL's that you guys used to get started. --Carl --- Joseph B. Ottinger [EMAIL PROTECTED] http://epesh.com/ IT Consultant
URGENT: Problems with Orion load balancer.
Happy New Year everyone, Apologies for re-posting this so soon, but given that a lot of people will have been away during the festive period and the necessity for a solution to my problem intensifies, I want to pass this in front of you all again. I'm very grateful for your interest. Tony. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Tony J Brooks Sent: 22 December 2000 12:39 To: Orion-Interest Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Problems with Orion load balancer. Dear All, I'm having problems with load-balancing a single island of two orion appservers. I have followed the instructions from the clustering 'howto' document, and I've made changes to the relevant XML files. Note, I made the changes to the default web app files, rather than to the XML files specific to my app. From the documentation I expect the changes to therefore impact *all* apps, and that I should experience the desired clustering and load balancing for my app. Using the Microsoft Web App Stress Tool, running 100 threads which continually request a single page from the clustered app via the load balancer, things seem to work fine for the first minute or so, despite the fact that the balancer 'drops' servers periodically but then manages to re-discover them. The performance meters for the servers in the app cluster show that both machines are working at close to full capacity during this brief period. At some point after that first minute or so, the load balancer will typically drop one of the servers, re-discover it, add it back into the island, but that server will thereafter be unloaded - the performance meter registers 0% load. Note that this is despite the fact that the other server - still alive, is working flat out at 100%. Has anyone experienced this before ? I can't find anything in the archive. I'm especially perplexed since a lot of other people claim to have load-balancing and clustering working fine - after working from the same 'howto' as me. I would really appreciate help on this. Merry Christmas everyone. Tony. --- Dr Tony J Brooks Apama (UK) Ltd 17 Millers Yard Cambridge, UK Mobile : 07748 767 110 eMail : [EMAIL PROTECTED]
Re: Help with Java obfuscators
I dont think freeware is the right term, if I read the website correctly. What you get there is a 90 day evaluation for non-commercial purposes. After that you may request a commercial license, but it does not say for how much. I'm real happy with IBM's freeware product "JAX": http://www.alphaworks.ibm.com/tech/JAX. Incidentally this seems to be the same tool Evermind uses. --Mark
Re: load-on-startup
If I'm not completely mistaken is the load order for servlets. Meaning if load-on-startup is 1, that is the first servlet to load, 2 second to load. to load - being loaded by Orion. //Johan - Original Message - From: "Neal Kaiser" [EMAIL PROTECTED] To: "Orion-Interest" [EMAIL PROTECTED] Sent: Thursday, January 04, 2001 7:10 PM Subject: load-on-startup What are the possible values for load-on-startup /load-on-startup ? I thought it was just 0 or 1. I have a Servlet which I wanted to be auto loaded and have a value of 1 in there. It wouldn't start up. I bumped it up to 4 and it works. Weird, I know
Re: JSP vs Servlet MVC - CMV
I've seen the abbreviation MVC on a lot of places, but shouldn't it be CMV for Controller / Model / View where Controller receives a request, handles it using model and displays it using view? Not important to me, just wondered... =) //Johan - Original Message - From: "Fyffe Carl" [EMAIL PROTECTED] To: "Orion-Interest" [EMAIL PROTECTED] Sent: Friday, January 05, 2001 9:07 AM Subject: JSP vs Servlet I went to jollem.com and read the CMP Primer. Good read. But it got me thinking about a topic that concerns most people that are in large development groups. Seperation of code and html. Proper MVC calls for the code to be in the controller while there is little code in the view portion of the application. This allows the designers to design and the coders to code. Were the rules broken for convience or has a new methodology taken over? It seems to me that the CMP Primer would have been easier to read and understand if MVC had been used. This one short coming can easily overlooked to find a gem of an article. Are there other primers of jollem.com's caliber? What are some useful URL's that you guys used to get started. --Carl
Re: Accessing multiple databases in the same application
Hello Michael, Check the docs for the orion-ejb-jar.xml. In the entry for entity beans (entity-deployment ...) you can specify the datasource and table to be used using the parameters data-source and table. You can find the file in $(APP-DEPLOYMENT-DIR)/$(APP-NAME)/ejb -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
User guide
hi everybody, I need to evaluate orionserver but i don't find any user guide on the site and the documentation is quiet not enough. For example, i want to know how to define servlet context, EJB2.0 (how to define EQL, where are the generated stub...) Has someone a user guide ? Thanks in advance __ Boîte aux lettres - Caramail - http://www.caramail.com
Re: Help with Java obfuscators
- Original Message - From: "Christian Sell" [EMAIL PROTECTED] I dont think freeware is the right term, if I read the website correctly. What you get there is a 90 day evaluation for non-commercial purposes. After that you may request a commercial license, but it does not say for how much. Most all software on alphaworks are being licensed for $1,000 for unlimited use with no support. I'm not sure about something like JAX since it's just a utility... seems like it should be less. (like jikes which was made open source) Serge Knystautas Loki Technologies http://www.lokitech.com/ I'm real happy with IBM's freeware product "JAX": http://www.alphaworks.ibm.com/tech/JAX. Incidentally this seems to be the same tool Evermind uses. --Mark
RE: What's going on with Orion? - an answer
Again, my reply to Orion is that they need to get up to speed quickly. They have a first class product, but because of their pricing structure, their completion is present on two fronts. 1. Create a notch in markets where much higher priced products like WebSphere and WebLogic are king. 2. Convince companies not taking the high priced options that their low priced product is better then open source initiatives like Jboss, OpenEJB, and Jonas. There was some talk a while ago about why Orion is not open source, and now they plan to increase Support. Resin, which is a great product, has a wonderful support structure (providing you want to pay for it) in addition to being open source and charging a product fee, and they are doing very well in the sales area. -Original Message- From: Duffey, Kevin [mailto:[EMAIL PROTECTED]] Sent: Thursday, January 04, 2001 12:55 PM To: Orion-Interest Subject: RE: What's going on with Orion? - an answer The Orion team replied about a month ago to similar questions. They are in the process of restructuring to get their name out, get more people for support, etc. Its a lengthy process as they told us, trying to get the company going. It is quite a shock for us after seeing so many updates so quickly, to see several months of no activity at all. I hope something happens soon. -Original Message- From: Vidur Dhanda [mailto:[EMAIL PROTECTED]] Sent: Thursday, January 04, 2001 6:34 AM To: Orion-Interest Subject: What's going on with Orion? Hello, This list has become awfully quiet. What's going on with Orion? There haven't been any new releases or bug fixes. Does anyone have any information? Perhaps, someone on the Orion team can give us an update. Personally, I'm getting a little concerned. Vidur
RE: JSP vs Servlet
I did address this same question to the folks at www.jollem.com and their suggestion, which was a fine one, was to create a tutorial. Jollem has a mechanism in place to create tutorials (see website). Since I am not an expert, I would ask if some expert (with some spare time) could show us how to create the Orion CMP example in a model two format. -Original Message- From: Fyffe Carl [mailto:[EMAIL PROTECTED]] Sent: Friday, January 05, 2001 2:08 AM To: Orion-Interest Subject: JSP vs Servlet I went to jollem.com and read the CMP Primer. Good read. But it got me thinking about a topic that concerns most people that are in large development groups. Seperation of code and html. Proper MVC calls for the code to be in the controller while there is little code in the view portion of the application. This allows the designers to design and the coders to code. Were the rules broken for convience or has a new methodology taken over? It seems to me that the CMP Primer would have been easier to read and understand if MVC had been used. This one short coming can easily overlooked to find a gem of an article. Are there other primers of jollem.com's caliber? What are some useful URL's that you guys used to get started. --Carl
RE: JSP vs Servlet
Would you be interested in writing a Model three CMP primer (given the time)? It would be helpful to use newcomers to see the CMP primer in three flavors: models 1, 2, and 3. -Original Message- From: Kevin Duffey [mailto:[EMAIL PROTECTED]] Sent: Friday, January 05, 2001 1:59 AM To: Orion-Interest Subject: RE: JSP vs Servlet Interesting point. I agree, and infact I found the CMP primer a bit hard to read because it wasn't so clean (as far as the code used). However, for the sake of brevity I am sure they had to cut corners so as not to have a 200-page book. I would have liked to seen a bit more detail and info on the examples, however. I think a CMP II article should be written, to include the "latest" MVC model, which is sometimes called Model 3. That is, Using JSP to return XML output, which is then transformed into HTML, WML or whatever via XSL, and the output is then returned to the browser. I am working on just such a thing in my streamlined mvc framework, which I offer as free source. My framework works very well, and offers some things I haven't seen in other frameworks, such as auto-population of javabeans used on the page with support added to handle nested object population within a javabean. Also, you can choose whether to use auto-population or not on a per request basis, as well as a very simple to use action class..simply supply the command=MethodName and implement a public String MethodName() method in an action class, and its called. I use a small bit of reflection to call the method in the action class, instead of the command/swtich() approach often used. Anyways, I have been thinking for quite some time of creating a small "book" that specifically targets the MVC framework (in detail) and how to separate the business logic (ejb session beans) from the controlling logic (controller servlet and instances of action classes) from the front-end stateful bean (javabean stored in HttpSession), and the JSP page (view of dynamic data). I just haven't had the time to play around with it all yet. I am working on my framework to simplify using JSP to return XML output, and applying XSL to that output to get HTML or something else. When I am done with this I plan on posting the framework info to this list and jsp-interest list. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Fyffe Carl Sent: Friday, January 05, 2001 12:08 AM To: Orion-Interest Subject: JSP vs Servlet I went to jollem.com and read the CMP Primer. Good read. But it got me thinking about a topic that concerns most people that are in large development groups. Seperation of code and html. Proper MVC calls for the code to be in the controller while there is little code in the view portion of the application. This allows the designers to design and the coders to code. Were the rules broken for convience or has a new methodology taken over? It seems to me that the CMP Primer would have been easier to read and understand if MVC had been used. This one short coming can easily overlooked to find a gem of an article. Are there other primers of jollem.com's caliber? What are some useful URL's that you guys used to get started. --Carl
RE: Tomcat 3.2 and Orion
This may not answer Tomcat specifically, but if you go to www.caucho.com, and search for the EJB section, there is a solution to set up Resin with Orion (you may need to download Resin and look at the Doc). It would seem to me, since Resin is a JSP engine, you could adapt a similar solution for Tomcat. -Original Message- From: Ratz, Peter [mailto:[EMAIL PROTECTED]] Sent: Friday, January 05, 2001 6:59 AM To: Orion-Interest Subject: Tomcat 3.2 and Orion I have to use Tomcat as JSP and Servlet Engine and i want to use Orion as EJB-Server. My Problem is that i do not know how to setup tomcat so that i can use EJBs from Orion (JNDI setup ). My last error message was :-) java.lang.ClassFormatError: __Proxy2 (Repeative method name/signature) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:486) at java.lang.ClassLoader.defineClass(ClassLoader.java:426) at com.evermind.net.jm.findClass(JAX) at java.lang.ClassLoader.loadClass(ClassLoader.java:297) at java.lang.ClassLoader.loadClass(ClassLoader.java:253) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:195) at com.evermind.reflect.Proxy.arm(JAX) at com.evermind.reflect.Proxy.arl(JAX) at com.evermind.reflect.Proxy.arj(JAX) at com.evermind.server.rmi.bd.hc(JAX) at com.evermind.server.rmi.ba.resolveObject(JAX) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:399) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:236) at com.evermind.server.rmi.ba.gq(JAX) at com.evermind.server.rmi.bd.h0(JAX) at com.evermind.server.rmi.bd.run(JAX) at java.lang.Thread.run(Thread.java:484) Are there any information available how to setup this configuration? Thanks Peter
RE: Accessing multiple databases in the same application
yap, check out orion-ejb-jar.xml In either CMP or BMP entitys you can modify deployment settings at any time with CMP you can even modify the field mapping scheme BUT, i think in another of the orion*.xml (i think orion-application.xml) you may specify the datasources PRIOR to deployment (thus the table creation command will be issued to the correct DB) HTH JP -Original Message- From: Michael S. Kelly [mailto:[EMAIL PROTECTED]] Sent: Jueves, 04 de Enero de 2001 19:43 To: Orion-Interest Subject: Accessing multiple databases in the same application I know how to set up datasources. And I know how to set the default datasource in the orion-application.xml. But what if I want one application to access data in multiple databases? Is there some way to specify that certain entity beans use one datasource while other entity beans use another? -=michael=- == Michael S. Kelly _ Axian, Inc. // |_ __(_) ___ _ __ 4800 SW Griffith Dr., Ste. 202 //| |\\/ /| |/ _ \| '_ \ Beaverton, OR 97005 USA _//_| | / / | | |_| | | | | Voice: (503)644-6106 x122 (( // |_|/_/\\|_|\_/|_|_| |_| Fax: (503)643-8425 ``-'' ``-'' http://www2.axian.com Software Consulting and Training mailto:[EMAIL PROTECTED] ==
RE: JSP vs Servlet MVC - CMV
it's a circular pattern... you access the controller from a view, which is generated by the model... all of this brings us back to the important question: what was first--- the egg or the chicken? My 2c, JP -Original Message- From: Johan Fredriksson [mailto:[EMAIL PROTECTED]] Sent: Viernes, 05 de Enero de 2001 9:25 To: Orion-Interest Subject: Re: JSP vs Servlet MVC - CMV I've seen the abbreviation MVC on a lot of places, but shouldn't it be CMV for Controller / Model / View where Controller receives a request, handles it using model and displays it using view? Not important to me, just wondered... =) //Johan - Original Message - From: "Fyffe Carl" [EMAIL PROTECTED] To: "Orion-Interest" [EMAIL PROTECTED] Sent: Friday, January 05, 2001 9:07 AM Subject: JSP vs Servlet I went to jollem.com and read the CMP Primer. Good read. But it got me thinking about a topic that concerns most people that are in large development groups. Seperation of code and html. Proper MVC calls for the code to be in the controller while there is little code in the view portion of the application. This allows the designers to design and the coders to code. Were the rules broken for convience or has a new methodology taken over? It seems to me that the CMP Primer would have been easier to read and understand if MVC had been used. This one short coming can easily overlooked to find a gem of an article. Are there other primers of jollem.com's caliber? What are some useful URL's that you guys used to get started. --Carl
RE: User guide
There are three sources for documentation: Download the doc at www.orionserver.com Look at the questions and answers at www.orionsupport.com Look at the examples at www.jollem.com Unfortunately, the documentation for Orion and the open source initiatives (jboss, jonas, openejb) are not up to the same caliber as high price products like Webspere or Weblogic. But, then again, the prices are great. -Original Message- From: Laurent Vansuypeene [mailto:[EMAIL PROTECTED]] Sent: Friday, January 05, 2001 3:44 PM To: Orion-Interest Subject: User guide hi everybody, I need to evaluate orionserver but i don't find any user guide on the site and the documentation is quiet not enough. For example, i want to know how to define servlet context, EJB2.0 (how to define EQL, where are the generated stub...) Has someone a user guide ? Thanks in advance __ Boîte aux lettres - Caramail - http://www.caramail.com
Globally available environment vars
We're getting to the point where we're integrating a bunch of stuff into a web app .. two different ejb modules plus a web module. I'd like to have a single central place where user-customizable configuration can be stored. Experimenting with env-entry in the web.xml file seems to indicate that those environment vars are not available (by any naming convention I've been able to think up) in the ejb modules. I can put the env-entry into the deployment descriptor for the bean that needs the value and get access, but that would be too messy for the end-user to be messing with! Anyone have any ideas?
Message-driven beans get attached to queues HOW?
I've been playing around with developing my own queue consumer, and I'm stuck trying to figure out how to tell the EJB that it's listening to controllerQueue. In BEA it's in the server-specific deployment file; I've looked at the ATM example for a corresponding entry in orion-ejb-jar.xml with no luck. Does anyone else know the format of this XML stanza? --- Joseph B. Ottinger [EMAIL PROTECTED] http://epesh.com/ IT Consultant
RE: Redirection
it seems that this doesn't actually send the redirect right away. It only
Marks the redirect to happen after the JSP is finished. This means any
logic AFTER the redirect will still happen. Not only that, but if you do a
second sendRedirect, it replaces the first.
We have found that putting "return;" on the next line helps (it returns from
the generated service() method).
Does anyone else know a way around this!
Tony
-Original Message-
From: Petr Podsednik
To: Orion-Interest
Sent: 1/5/01 1:02 AM
Subject: Re: Redirection
I use this approach in my jsp:
response.sendRedirect("newSelectedURL");
This causes pointing my browser to the "newSelectedURL" and it works
fine.
Petr
- Original Message -
From: Huibert Aalbers [EMAIL PROTECTED]
To: Orion-Interest [EMAIL PROTECTED]
Sent: Thursday, January 04, 2001 5:07 PM
Subject: Redirection
Hi everyone,
Since it seems that the list is alive and well, although with very
little traffic, I would like to ask a question which has been
bothering
me for a while.
I am trying to do what I would define as dynamic redirection. What
that
means is that if someone writes an URL like http://myserver/name, I
would like to look for "name" in a database and redirect the user to
some other URL. This would allow me to avoid modifying manually the
configuration file every time a mapping is added,removed or modified.
Is this possible? Any suggestions?
Thanks in advance and Happy New Year!
Huibert Aalbers
Re: User guide
There's always the Servlet 2.2 spec, from Sun..that should answer a bunch of questions about defining servlet contexts. Orion conforms to the Servlet spec. Other than that, I think you're left with the stuff from the website, and the downloadable documentation. Personally, I have found the archives of this newsgroup to be invaluable in setting up and running Orion. At 04:43 PM 01/05/2001 -0500, you wrote: hi everybody, I need to evaluate orionserver but i don't find any user guide on the site and the documentation is quiet not enough. For example, i want to know how to define servlet context, EJB2.0 (how to define EQL, where are the generated stub...) Has someone a user guide ? Thanks in advance __ Boîte aux lettres - Caramail - http://www.caramail.com -- Andrew Kidder L3 SW/Support Engineer Tivoli Systems 512-436-4544 [EMAIL PROTECTED] http://www.tivoli.com
RE: JSP vs Servlet MVC - CMV
Actually..you are correct for the most part, but think of it this way. Most sites you just type in the www.company.com and hit enter. You don't type a specific path (that would be mapped to a controller servlet)..for the most part. There are a lot of sites you do such things..but for the most part, you type in the company name to get to the site. Now, the first thing that shows up is index.html (or index.jsp) usually, so in retrospect, the VIEW is first, then when a link is clicked the CONTROLLER is accessed, then the MODEL, then the VIEW again. So, it should probably be called VCM. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Juan Lorandi (Chile) Sent: Friday, January 05, 2001 7:59 AM To: Orion-Interest Subject: RE: JSP vs Servlet MVC - CMV it's a circular pattern... you access the controller from a view, which is generated by the model... all of this brings us back to the important question: what was first--- the egg or the chicken? My 2c, JP -Original Message- From: Johan Fredriksson [mailto:[EMAIL PROTECTED]] Sent: Viernes, 05 de Enero de 2001 9:25 To: Orion-Interest Subject: Re: JSP vs Servlet MVC - CMV I've seen the abbreviation MVC on a lot of places, but shouldn't it be CMV for Controller / Model / View where Controller receives a request, handles it using model and displays it using view? Not important to me, just wondered... =) //Johan - Original Message - From: "Fyffe Carl" [EMAIL PROTECTED] To: "Orion-Interest" [EMAIL PROTECTED] Sent: Friday, January 05, 2001 9:07 AM Subject: JSP vs Servlet I went to jollem.com and read the CMP Primer. Good read. But it got me thinking about a topic that concerns most people that are in large development groups. Seperation of code and html. Proper MVC calls for the code to be in the controller while there is little code in the view portion of the application. This allows the designers to design and the coders to code. Were the rules broken for convience or has a new methodology taken over? It seems to me that the CMP Primer would have been easier to read and understand if MVC had been used. This one short coming can easily overlooked to find a gem of an article. Are there other primers of jollem.com's caliber? What are some useful URL's that you guys used to get started. --Carl
RE: JSP vs Servlet
I will try my hand at this as soon as my framework is done. I plan to use the Model 3 approach..which is using Model 2 but instead of forwarding to JSP, it passes the JSP output (which would be XML tags with dynamic data) and an XSL to XALAN and transforms it to HTML, then sends that back. In this way, the tutorial will properly show a clear cut solution to separating data from logic from the view. It won't be for a little bit though..so don't hold your breath. I will ask for reviews by this list before I post it, to see if it makes sense, works, etc. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Kemp Randy-W18971 Sent: Friday, January 05, 2001 6:16 AM To: Orion-Interest Subject: RE: JSP vs Servlet I did address this same question to the folks at www.jollem.com and their suggestion, which was a fine one, was to create a tutorial. Jollem has a mechanism in place to create tutorials (see website). Since I am not an expert, I would ask if some expert (with some spare time) could show us how to create the Orion CMP example in a model two format. -Original Message- From: Fyffe Carl [mailto:[EMAIL PROTECTED]] Sent: Friday, January 05, 2001 2:08 AM To: Orion-Interest Subject: JSP vs Servlet I went to jollem.com and read the CMP Primer. Good read. But it got me thinking about a topic that concerns most people that are in large development groups. Seperation of code and html. Proper MVC calls for the code to be in the controller while there is little code in the view portion of the application. This allows the designers to design and the coders to code. Were the rules broken for convience or has a new methodology taken over? It seems to me that the CMP Primer would have been easier to read and understand if MVC had been used. This one short coming can easily overlooked to find a gem of an article. Are there other primers of jollem.com's caliber? What are some useful URL's that you guys used to get started. --Carl
RE: JSP vs Servlet
This was not neccessarily a request for the explaination of MVC or CVM or VCM or whatever :) Many people learn by example, and this example will cause newbies to put their code in the JSP if they don't already know MVC. I think it is up to the more knowledgable folks to lead us less knowledgable down the correct path, whether they explain all of the reasons is up to the ammount of time the writers have. This article is VERY good, and I learned alot from it. Just please be sure you are using "best practices" when writing a tutorial. You never know if those little eyes are watching :) --Carl -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Christian Sell Sent: Friday, January 05, 2001 3:11 AM To: Orion-Interest Subject: Re: JSP vs Servlet Anyway, IMHO adding a methodology on top of the purpose of the article - showing the CMP stuff - would have been yet more to learn. I'm of the opinion that something like that needs to show off one aspect of the technology rather than all aspects, so MVC - while useful - would have been yet another thing to track. and then he would have had to decide which methodology to use. They all speak of MVC, but nowadays almost everyone seems to have his/her own idea of how to implement it. There are so many frameworks out there (e.g., Turbine, Struts, WebWork, WebMacro, Freemarker, Velocity, to name but a few) that it is hard to keep track, IMO.
Re: User guide
Orion, with it's many configuration files, appears very complex to configure to someone who is working with it for the first time. It would be alot more 'developer' friendly if there was some sort of technical guide, other than the simple examples presented in the jsp pages that are found in the base download. I would think that if Orion were to develop some sort of technical documentation, as other application server distributors have, it would increase it's share in the market. Is there any plan to implement sort of system documentation? [EMAIL PROTECTED] Sent by: To: Orion-Interest owner-orion-interest@orion[EMAIL PROTECTED] server.comcc: Subject: Re: User guide 01/05/2001 08:21 AM Please respond to Orion-Interest Don't be surprised. Unfortunately, the documentation, what you can find of it, is very poor. I doubt that an user guide even exists. Laurent Vansuypeene [EMAIL PROTECTED]To: Orion-Interest m [EMAIL PROTECTED] Sent by: cc: owner-orion-interest@orionSubject: User guide server.com 01/05/2001 01:43 PM Please respond to Orion-Interest hi everybody, I need to evaluate orionserver but i don't find any user guide on the site and the documentation is quiet not enough. For example, i want to know how to define servlet context, EJB2.0 (how to define EQL, where are the generated stub...) Has someone a user guide ? Thanks in advance __ Boîte aux lettres - Caramail - http://www.caramail.com
RE: Globally available environment vars
How about having an initializer bind some property files into JNDI that can then be accessed by the web ejb modules.
There seems to be no datetime mapping in the SQL Server database schema.
The ms-sql.xml file contains the following: database-schema name="Microsoft SQL Server" not-null="not null" null="" primary-key="primary key" type-mapping type="java.lang.String" name="nvarchar(50)" / type-mapping type="float" name="float" / type-mapping type="double" name="float" / type-mapping type="byte" name="smallint" / type-mapping type="char" name="char" / type-mapping type="short" name="int" / type-mapping type="boolean" name="bit" / type-mapping type="long" name="int" / type-mapping type="java.io.Serializable" name="varbinary" / disallowed-field name="password" / disallowed-field name="username" / disallowed-field name="date" / disallowed-field name="text" / /database-schema Note that there is no mapping for the datetime data type. I'm assuming this is an oversight and there should be a mapping like this in the file: type-mapping type="java.util.Date" name="datetime" / Am I missing something? -=michael=- == Michael S. Kelly _ Axian, Inc. // |_ __(_) ___ _ __ 4800 SW Griffith Dr., Ste. 202 //| |\\/ /| |/ _ \| '_ \ Beaverton, OR 97005 USA _//_| | / / | | |_| | | | | Voice: (503)644-6106 x122 (( // |_|/_/\\|_|\_/|_|_| |_| Fax: (503)643-8425 ``-'' ``-'' http://www2.axian.com Software Consulting and Training mailto:[EMAIL PROTECTED] ==
Open source and license
If Orion is a full J2EE implementation, they are probably right in not legally releasing the source code as open source. I found this in the openEJB letter archive at http://openejb.exolab.org/list-archive/msg00103.html, under www.openejb.org Unfortunately, we still do not have a complete implementation of the J2EE platform to release under an Open Source license. But this is not only an engineering issue, but also a legal one: you need to understand that Intalio, Inc. still is not allowed by Sun Microsystems, Inc. to make available such an implementation under an Open Source license, according to the "licensing terms" of the J2EE specification and related interfaces. There is not that much we can do about it outside lobbying.
Question about automated testing with Orion
I'm trying to set up some automated unit tests for our servlets. I'm using HttpUnit and JUnit, but the authentication in HttpUnit doesn't work with Orion. Does anyone out there have experience at this? Is there a better tool? Some sort of trick? I've been talking to the HttpUnit folks, and they don't know what to do. Thanks for any help.
Re: User guide
There's more info and examples,etc on www.orionsupport.com. Check it out. --- Laurent Vansuypeene [EMAIL PROTECTED] wrote: hi everybody, I need to evaluate orionserver but i don't find any user guide on the site and the documentation is quiet not enough. For example, i want to know how to define servlet context, EJB2.0 (how to define EQL, where are the generated stub...) Has someone a user guide ? Thanks in advance __ Boîte aux lettres - Caramail - http://www.caramail.com __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/
RE: Accessing multiple databases in the same application
There is a default-data-source parameter in orion-application.xml, as in: orion-application deployment-version="1.4.0" default-data-source="jdbc/MSSQLDS" It looks like this data-source gets propagated to the EJB deployment description in orion-ejb-jar.xml, but I don't see a way to specify the database prior to deployment so the table gets created in the correct place. Am I missing something? -=michael=- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Juan Lorandi (Chile) Sent: Friday, January 05, 2001 7:09 AM To: Orion-Interest Subject: RE: Accessing multiple databases in the same application yap, check out orion-ejb-jar.xml In either CMP or BMP entitys you can modify deployment settings at any time with CMP you can even modify the field mapping scheme BUT, i think in another of the orion*.xml (i think orion-application.xml) you may specify the datasources PRIOR to deployment (thus the table creation command will be issued to the correct DB) HTH JP -Original Message- From: Michael S. Kelly [mailto:[EMAIL PROTECTED]] Sent: Jueves, 04 de Enero de 2001 19:43 To: Orion-Interest Subject: Accessing multiple databases in the same application I know how to set up datasources. And I know how to set the default datasource in the orion-application.xml. But what if I want one application to access data in multiple databases? Is there some way to specify that certain entity beans use one datasource while other entity beans use another? -=michael=- == Michael S. Kelly _ Axian, Inc. // |_ __(_) ___ _ __ 4800 SW Griffith Dr., Ste. 202 //| |\\/ /| |/ _ \| '_ \ Beaverton, OR 97005 USA _//_| | / / | | |_| | | | | Voice: (503)644-6106 x122 (( // |_|/_/\\|_|\_/|_|_| |_| Fax: (503)643-8425 ``-'' ``-'' http://www2.axian.com Software Consulting and Training mailto:[EMAIL PROTECTED] ==
RE: There seems to be no datetime mapping in the SQL Server database schema.
Never mind. I found my answer in the archive. Sorry for the trouble. -=michael=- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Michael S. Kelly Sent: Friday, January 05, 2001 10:43 AM To: Orion-Interest Subject: There seems to be no datetime mapping in the SQL Server database schema. The ms-sql.xml file contains the following: database-schema name="Microsoft SQL Server" not-null="not null" null="" primary-key="primary key" type-mapping type="java.lang.String" name="nvarchar(50)" / type-mapping type="float" name="float" / type-mapping type="double" name="float" / type-mapping type="byte" name="smallint" / type-mapping type="char" name="char" / type-mapping type="short" name="int" / type-mapping type="boolean" name="bit" / type-mapping type="long" name="int" / type-mapping type="java.io.Serializable" name="varbinary" / disallowed-field name="password" / disallowed-field name="username" / disallowed-field name="date" / disallowed-field name="text" / /database-schema Note that there is no mapping for the datetime data type. I'm assuming this is an oversight and there should be a mapping like this in the file: type-mapping type="java.util.Date" name="datetime" / Am I missing something? -=michael=- == Michael S. Kelly _ Axian, Inc. // |_ __(_) ___ _ __ 4800 SW Griffith Dr., Ste. 202 //| |\\/ /| |/ _ \| '_ \ Beaverton, OR 97005 USA _//_| | / / | | |_| | | | | Voice: (503)644-6106 x122 (( // |_|/_/\\|_|\_/|_|_| |_| Fax: (503)643-8425 ``-'' ``-'' http://www2.axian.com Software Consulting and Training mailto:[EMAIL PROTECTED] ==
Null pointer exception in Wrapper class
Anyone get anything like this? This is in a CMP bean, being called from a servlet, and I'm just calling a method generated by Orion. Could this be an error in my ejb-jar.xml file? My find methods are just generic find all methods, so I'm not touching the generated xml files in any way. Is there a way I can at least see the generated source? Thanks for the help! java.lang.NullPointerException: at CarrierCompanyHome_EntityHomeWrapper8.hashCode(CarrierCompanyHome_EntityHomeWrapper8.java:117) at com.evermind.util.ExternalHashSet.get(JAX, Compiled Code) at CarrierCompanyHome_EntityHomeWrapper8.findAllCarriers(CarrierCompanyHome_EntityHomeWrapper8.java, Compiled Code) at CommandServlet.doPost(CommandServlet.java, Compiled Code) Robert Smith _ Get your FREE download of MSN Explorer at http://explorer.msn.com
RE: Question about automated testing with Orion
On top of that, I am looking for a way to automate the compilation of JSP files offline (i.e. not through a web browser, or even hitting the web page). JRun and TomCat each exposed their JSP compiler interfaces so that you can run them offline and capture the errors/warnings. I cannot seem to find that interface in Orion. Anybody have any suggestions? Tony Wilson -Original Message- From: Eric Hodges To: Orion-Interest Sent: 1/5/01 12:32 PM Subject: Question about automated testing with Orion I'm trying to set up some automated unit tests for our servlets. I'm using HttpUnit and JUnit, but the authentication in HttpUnit doesn't work with Orion. Does anyone out there have experience at this? Is there a better tool? Some sort of trick? I've been talking to the HttpUnit folks, and they don't know what to do. Thanks for any help.
Troubles with DataSourceUserManager and RoleManager
Hi all,
I've been struggling with DataSourceUserManager for the past week or so, and
could really use some help. I'm running out of ideas, if anyone can help me
get this last piece figured out, I will create a complete document for
OrionSupport detailing how DataSourceUserManager works, and hopefully stop
these types of questions from floating through here again (how's that for
incentive!)
The problem is occurring when I try to add a user to a role, and Oracle is
kicking back the following error message:
SQL error: ORA-01008: not all variables bound
This looks to me like a problem with the generated SQL code from Orion.
The version of Orion is 1.3.8 and the database is Oracle 8.1.7 Release 2.
The DataSourceUserManager is using two tables for authentication, one to
verify the user and password, and then another to perform the role mappings
for each user.
I can verify a user, their password and their roles. This works with users
that only have one role and users that have more than one role. All the
users are being permitted and restricted properly.
The problem is adding a user to a role. I am trying to do this using a
Servlet that just creates a user and adds them to a role using the
RoleManager.
e.g. a user logs in with Tod / test and then the Servlet runs and tries to
create a user, Bob / test. Then Bob is added to the role "users".
I get this error from the Servlet when trying to execute the method
addToRole(principal, "users"). I am logging in with the user Tod, who has
permission to run the servlet.
Here is the code to add a user to the role:
=
// Handles the HTTP GET request
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
Principal principal;
ServletOutputStream out = response.getOutputStream();
response.setContentType("text/html");
out.println("HTMLBODY");
out.println("PAbout to add a new user named Bob");
System.out.println("Starting the addition of a new user.");
try {
RoleManager roleManager = (RoleManager) new
InitialContext().lookup("java:comp/RoleManager");
// This will create a user.
principal = roleManager.createPrincipal("Bob","test");
// This is where the user should be added to the role "users"
roleManager.addToRole(principal, "users"); // this is where bad
things happen
roleManager.store();
} catch (Exception e) {
System.out.println("bad things happened!");
e.printStackTrace();
}
}
If I run this code, I see the following on the output:
=
Starting the addition of a new user.
DataSourceUserManager.getUser(Bob)
I have gotten a reference to the principal.
bad things happened!
java.lang.RuntimeException: SQL error: ORA-01008: not all variables bound
at com.evermind.sql.DataSourceUser.addToGroup(JAX)
at com.evermind.server.he.addToRole(JAX)
at TodServlet.doGet(TodServlet.java:65)
at javax.servlet.http.HttpServlet.service(HttpServlet.java)
at javax.servlet.http.HttpServlet.service(HttpServlet.java)
at javax.servlet.http.HttpServlet.service(HttpServlet.java)
at com.evermind.server.http.d1.si(JAX)
at com.evermind.server.http.d1.forward(JAX)
at com.evermind.server.http.ed.sp(JAX)
at com.evermind.server.http.ed.so(JAX)
at com.evermind.util.f.run(JAX)
=
If I open up Oracle, the user was successfully added to the users table, but
the role mapping was not set up.
Here's the configuration from the orion-application.xml file:
user-manager class="com.evermind.sql.DataSourceUserManager"
property name="dataSource" value="jdbc/DefaultDS" /
property name="table" value="MEMBEREJB"/
property name="usernameField" value="MEMBERNAME" /
property name="passwordField" value="PASSWORD" /
property name="defaultGroups" value="guests" /
property name="groupMembershipTableName" value="MEMBER_GROUPS" /
property name="groupMembershipUsernameFieldName" value="MEMBERNAME" /
property name="groupMembershipGroupFieldName" value="MEMBERROLE" /
property name="staleness" value="3600" /
property name="debug" value="true" /
/user-manager
Any help to shed some light on this would be much appreciated. It would be
nice to see this documented finally...
Thanks
Lawrence.
RE: ResultSet Caching
I don't think entity bean can effectively solve your problem since calling entity bean can potentially be remote calls. Why not use session variables? Session variable is intended for temporary storage, like cache data. Conrad -Original Message- From: Neal Kaiser [mailto:[EMAIL PROTECTED]] Sent: Friday, January 05, 2001 1:18 PM To: Orion-Interest Subject: RE: ResultSet Caching What's the benefit of using those products over an entity bean then? How does it differ? Thanks. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Tony Wilson Sent: Friday, January 05, 2001 3:50 PM To: Orion-Interest Subject: RE: ResultSet Caching There are products that act as middlemen between you and the Database. They also offer database object abstraction (so you can have an object representing table data. You define field - property mappings, and the product handles the transfer of data.) These products usually have built-in caching. Two products are TopLink (expensive, but nice) http://www.objectpeople.com VBSF (pretty inexpensive, and still nice) http://www.objectmatter.com -Original Message- From: Neal Kaiser [mailto:[EMAIL PROTECTED]] Sent: Friday, January 05, 2001 10:49 AM To: Orion-Interest Subject:ResultSet Caching Does Orion have any built in caching functionality? Let's say I have a database query which returns 1,000 records and the user will page thru 100 at a time. Instead of re-issuing the query each time (each page), is there some sort of cache object? How do you guys typically handle this? Thanks, Neal
RE: Accessing multiple databases in the same application
If I understand correctly, while it appears that this file is generated, which it is, if you place your own version in your deployment, the version you provide will be used as a base, and Orion will just fill in any missing elements that it requires. tim. There is a default-data-source parameter in orion-application.xml, as in: orion-application deployment-version="1.4.0" default-data-source="jdbc/MSSQLDS" It looks like this data-source gets propagated to the EJB deployment description in orion-ejb-jar.xml, but I don't see a way to specify the database prior to deployment so the table gets created in the correct place. Am I missing something?
RE: Globally available environment vars
Are you sure? Seems to me that all you have to do is use the constructor InitialContext( Properties props ) to specify the environment that you wish via the java.naming.provider.url property. In other words, can't a web module just use "ormi://host:port/appname" to get a Context that can access the environment of the ejb module "appname"? well, the problem is that there seems not to be a context which is accessable from all the modules! It looks like this may be a J2EE deficiency .. I'm just gonna use a properties file .. jd -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jason Smith Sent: Friday, January 05, 2001 1:19 PM To: Orion-Interest Subject: RE: Globally available environment vars How about having an initializer bind some property files into JNDI that can then be accessed by the web ejb modules.
Re: Open source and license
At 12:40 PM 1/5/2001 -0600, you wrote: If Orion is a full J2EE implementation, they are probably right in not legally releasing the source code as open source. I found this in the openEJB letter archive at http://openejb.exolab.org/list-archive/msg00103.html, under www.openejb.org So what are the restrictions? No one seems to know. I see this inside the J2EE 1.2 specification: Sun hereby grants you a fully-paid, non-exclusive, non-transferable, worldwide, limited license (without the right to sublicense), under Sun's intellectual property rights that are essential to practice this Specification, to internally practice this Specification solely for the purpose of creating a clean room implementation of this Specification that: (i) includes a complete implementation of the current version of this Specification, without subsetting or supersetting; (ii) implements all of the interfaces and functionality of this Specification, as defined by Sun, without subsetting or supersetting; (iii) includes a complete implementation of any optional components (as defined by Sun in this Specification) which you choose to implement, without subsetting or supersetting; (iv) implements all of the interfaces and functionality of such optional components, without subsetting or supersetting; (v) does not add any additional packages, classes or interfaces to the "java.*" or "javax.*" packages or subpackages (or other packages defined by Sun); (vi) satisfies all testing requirements available from Sun relating to the most recently published version of this Specification six (6) months prior to any release of the clean room implementation or upgrade thereto; (vii) does not derive from any Sun source code or binary code materials; and (viii) does not include any Sun source code or binary code materials without an appropriate and separate license from Sun. This Specification contains the proprietary information of Sun and may only be used in accordance with the license terms set forth herein. This license will terminate immediately without notice from Sun if you fail to comply with any provision of this license. Sun may, at its sole option, terminate this license without cause upon ten (10) days notice to you. Upon termination of this license, you must cease use of or destroy this Specification. which doesn't say anything about license violations if you open source a J2EE implementation, or provide source to a J2EE implementation given a customer's agreement to a vendor-provided license. If there is a legal issue, someone please point it out and provide a reference to where it is written.
RE: ResultSet Caching
Right, I definitely wouldn't use an entity bean for list/search functionality. Way too much overhead. Stateless session beans is the way to go, but I don't think throwing in large variable sets into a session is a good solution either. Bloated sessions don't perform well either. Some app servers provide a caching solution, like Gemstone I believe, and I was just wondering if Orion had something similar. I guess it makes most sense to just re-issue the query for each page. But if someone has any better ideas, I'm all ears! Thank you. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Conrad Chan Sent: Friday, January 05, 2001 5:57 PM To: Orion-Interest Subject: RE: ResultSet Caching I don't think entity bean can effectively solve your problem since calling entity bean can potentially be remote calls. Why not use session variables? Session variable is intended for temporary storage, like cache data. Conrad -Original Message- From: Neal Kaiser [mailto:[EMAIL PROTECTED]] Sent: Friday, January 05, 2001 1:18 PM To: Orion-Interest Subject: RE: ResultSet Caching What's the benefit of using those products over an entity bean then? How does it differ? Thanks. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Tony Wilson Sent: Friday, January 05, 2001 3:50 PM To: Orion-Interest Subject: RE: ResultSet Caching There are products that act as middlemen between you and the Database. They also offer database object abstraction (so you can have an object representing table data. You define field - property mappings, and the product handles the transfer of data.) These products usually have built-in caching. Two products are TopLink (expensive, but nice) http://www.objectpeople.com VBSF (pretty inexpensive, and still nice) http://www.objectmatter.com -Original Message- From: Neal Kaiser [mailto:[EMAIL PROTECTED]] Sent: Friday, January 05, 2001 10:49 AM To: Orion-Interest Subject:ResultSet Caching Does Orion have any built in caching functionality? Let's say I have a database query which returns 1,000 records and the user will page thru 100 at a time. Instead of re-issuing the query each time (each page), is there some sort of cache object? How do you guys typically handle this? Thanks, Neal
RE: Question about automated testing with Orion
Out of curiosity, why do you have so much logic in servlets that you need to test them? Is your page transition logic that complicated? I have found that by keeping all my business logic in session beans (which are tested with JUnitEE, http://www.infohazard.org/junitee), my servlets/JSPs stay pretty much paper-thin. Simple functional testing is all that is required, mostly just to make sure that the html looks good. Or maybe I'm missing something. What are you trying to accomplish with your tests? Jeff -Original Message- From: Eric Hodges [mailto:[EMAIL PROTECTED]] Sent: Friday, January 05, 2001 12:32 PM To: Orion-Interest Subject: Question about automated testing with Orion I'm trying to set up some automated unit tests for our servlets. I'm using HttpUnit and JUnit, but the authentication in HttpUnit doesn't work with Orion. Does anyone out there have experience at this? Is there a better tool? Some sort of trick? I've been talking to the HttpUnit folks, and they don't know what to do. Thanks for any help.
File Upload Servlet
Hello, folks! Happy new year! I wrote a servlet that uploads files to the server. The problem with the servlet is that it works but it takes too much time. I put a couple of print statements at the beginning of the servlet and at the end of the servlet for a debuging purpose. Both the print statements responded immediately and uploaded a file correctly. At the second upload, when I clicked on the upload button, nothing happended for a very long time and then started to print the two statements. The servlet part seems OK. The servlet itself is processed quickly enough as all the print statements prints almost at the same time. Now,, then what? Something must be taking process before the servlet call. I searched the orionsupport pages and found a cool class specially designed for uploading files, which is com.evermind.io.PostFileInputStream. This appeared great for the first time, but it started giving me the `500 Internal Server Error' as follows: 500 Internal Server Error java.lang.ArrayIndexOutOfBoundsException at java.lang.System.arraycopy(Native Method) at com.evermind.io.PostFileInputStream.read(JAX) at com.freightstream.servlet.FileUpload.writeOut(FileUpload.java:72) at com.freightstream.servlet.FileUpload.service(FileUpload.java:48) at javax.servlet.http.HttpServlet.service(HttpServlet.java) at com.evermind.server.http.d3.so(JAX) at com.evermind.server.http.d3.sm(JAX) at com.evermind.server.http.ef.su(JAX) at com.evermind.server.http.ef.dn(JAX) at com.evermind.util.f.run(JAX) What am I doing wrong? As usual, orion does not have much documentation on how to use the class. Please give me a clue. Any idea will help. Thanks a billion.
