Re: Sharing httpsession among several applications
Hello Juan, Tuesday, March 19, 2002, 5:11:31 AM, you wrote: JF> Hi people. JF> When talking about secure applications, you have recommended to set the JF> shared attribute to "true". In that way, session is shared between the JF> secure and non-secure parts of an application. JF> My scenario is several applications deployed on the same orion server. JF> Is it possible to share the httpSession among them using the shared flag JF> in default-web-site.xml? JF> Thanks AFAIK, you can only share the HttpSession object among diferent instances of the same web-app in the same Enterprise Application. Even if the an Enterprise Application has more that one webapp, the session will not be shared between them. m2c Rafael
Re: is restarting Orion necessary ??
Hello mittal, Thursday, March 14, 2002, 12:48:14 AM, you wrote: msajcj> Hi msajcj> Please let me know if restarting Orion necessary if I change a class when msajcj> the server is running. msajcj> I do not want to run my server in development mode msajcj> regards msajcj> Sunil Hi! The answer is yes, you have to restart Orion as the default behavior of the JVM is to not reload a class that is already loaded in memory. Redeployment can flush that cache for servlets and EJB, but sometimes helper classes are not reloaded, so a restart is needed in those cases. m2c Rafael
Re: jsp:forward problem on Mac IE.
Hello Fredrik, Congrats! You have encounter an error that is not your's nor orion's. The problems is in the way IE4.5 for Mac parse the http header. I posted and issue at www.elephantwalker.com. Check it out at http://www.elephantwalker.com/searchresult?id=162 (Note: elephantwalker registration is free) After searching lots of forums I found out that a lot of people had problems with forward (not only with orion) on Mac and IE 4.5. So, I suggest that you start coding the "ugly-code" workaround. What I did was to wrap my forward call into a include/redirect combination. Sorry I can't be of more help, and good luck. -- Best regards, Rafael Alvares mailto:[EMAIL PROTECTED]
Re[2]: Persistance between HTTP and HTTPS
Hi! If you want to share info between Http and Https session , you have two options: i) Use a central repository (like JNDI) ii) Use the same web-app for http and https service, and set shared="true" in the deployment (check out the web-site.xml documentation). This way the HttpSession object, servlet context, etc are shared by both instances. This topic was discussed some time ago in this list, perhaps in the archives you can find a better (or more specific) answer http://www.mail-archive.com/orion-interest%40orionserver.com/ -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: NoSuchObjectException taking over FinderException
Hello Brian,
are you setting the exclusive-write-access to false for that bean?
There is a known bug (bug #532 in bugzilla) about findByPrimaryKey not
throwing an ObjectNotFoundException when it should if
exclusive-write-access is set to false. It's reported from 1.4.5 and
it hasn't be fixed.
The workaround is to use a try/catch block around call of the method
to catch a NoSuchObjectException.
Tuesday, November 20, 2001, 3:19:39 PM, you wrote:
BC> There seems to be a problem with FinderExceptions due to lazy loading of entity
beans.
BC> It seems to me that FinderExceptions are not working properly for entity beans?
Any ideas. See the following snipet.
BC> InitialContext ic = new InitialContext();
BC> Object o = ic.lookup("java:comp/env/ejb/CounterHome");
BC> CounterHome counterHome = (CounterHome)PortableRemoteObject.narrow(o,
CounterHome.class);
BC> // FinderException should be thrown but is NOT.
BC> Counter counter = counterHome.findByPrimaryKey("xyz");
BC> // NoSuchObjectException is thrown because the entity does not exist.
BC> System.out.println(counter.getNextID());
BC> - Thanks.
BC> [EMAIL PROTECTED]
--
Best regards,
Rafaelmailto:[EMAIL PROTECTED]
Re: session bug
Hello Denis,
Try doing this:
session = request.getSession(true);
System.out.println("session = request.getSession(false);\t" +
session.hashCode());
System.out.println("session = " + session);
session.invalidate();
System.out.println("session.invalidate();\t" + session.hashCode());
System.out.println("session = " + session);
session = request.getSession(true);
System.out.println("session = request.getSession();\t" +
session.hashCode());
System.out.println("session = " + session);
That way you'll get a new session after the session is invalidated.
The problem arises because the session object that is associated with
the request object is the invalidated one until you create a new
session, either by a new hit in the page/servlet or by using
request.getSession(true).
Tuesday, September 18, 2001, 9:44:52 AM, you wrote:
DK> Hello everyone!
DK> I think I have found bug in orion 1.5.2.
DK> There is problem with sessions. When I invalidate session and then get new
DK> session, sometimes (not always) I get same invalidated session.
DK> Does anybody have same problem? Any solution except that I remove all data
DK> from session?
DK> Thanks in advance.
DK> Here is code that demonstrates bug:
DK> session = request.getSession(true);
DK> System.out.println("session = request.getSession(false);\t" +
DK> session.hashCode());
DK> System.out.println("session = " + session);
DK> session.invalidate();
DK> System.out.println("session.invalidate();\t" + session.hashCode());
DK> System.out.println("session = " + session);
DK> session = request.getSession();
DK> System.out.println("session = request.getSession();\t" +
DK> session.hashCode());
DK> System.out.println("session = " + session);
DK> Orion's output:
DK> session = request.getSession();2935133
DK> session = HTTP Session AKAEMHOGAJOD
DK> session.invalidate(); 2935133
DK> session = HTTP Session AKAEMHOGAJOD
DK> session = request.getSession(); 2935133
DK> session = HTTP Session AKAEMHOGAJOD
DK> Exception is
DK> java.lang.IllegalStateException: Session was invalidated
DK> at com.evermind.server.http.EvermindHttpSession.setAttribute(Unknown
DK> Source)
DK> at
DK> isvu.kadrovska.web.command.LoginCommand.execute(LoginCommand.java:161)
DK> at isvu.kadrovska.web.Kadrovska.doPost(Kadrovska.java:183)
DK> at javax.servlet.http.HttpServlet.service(HttpServlet.java:211)
DK> at javax.servlet.http.HttpServlet.service(HttpServlet.java:309)
DK> at javax.servlet.http.HttpServlet.service(HttpServlet.java:336)
DK> at com.evermind._cxb._abe(Unknown Source)
DK> at com.evermind._cxb._uec(Unknown Source)
DK> at com.evermind._io._twc(Unknown Source)
DK> at com.evermind._io._gc(Unknown Source)
DK> at com.evermind._if.run(Unknown Source)
Best regards,
Rafaelmailto:[EMAIL PROTECTED]
Re[2]: Session share problem.
Hello Jishan, There is an option (shared="true as stated in other posting) to share session between different instances of the SAME application. The keyword is SAME. If you use different applications for each of your normal site and your secure site then that solution won't work. What you can do in that case is to "send" the sessionId() of the nonsecure site to the secure site, and viceversa. For example: To enter the secure site, use a link like : secure.jsp?nonsecureId= To reenter the non-secure site: nonsecure.jsp;jsessionId=?secureId= To reenter the secure site: secure.jsp;jsessionId=?nonsecureId= Wednesday, September 05, 2001, 9:34:33 PM, you wrote: GM> i think there's a share="true" attribute that you have to put in the web-site.xml file ??? check out the doco in www.orionserver.com GM> - Original Message - GM> From: Li GM> To: Orion-Interest GM> Sent: Wednesday, September 05, 2001 7:42 PM GM> Subject: Session share problem. GM> Hi, GM> I have session share problem between ssl site and non-ssl site. My ssl site name is secure.mysite.com and non-ssl site name is www.mysite.com. when I start my server, and visit GM> www.mysite.com firstly, everything goes well. But when I visit secure.mysite.com firstly after I starting my orion server, and then back to www.mysite.com every request on www.mysite.com create GM> a new session. So my user login, shopping cart won't work!!! GM> Is there any one can help me? GM> Thanks! GM> Jishan Li. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: PHP with Orion
Hello Marcello, Yes, it can be done. You need to modify the file global-web-application.xml in your config directory.There is a servlet used for serving pages using a CGI interpreter (like php). Below is an example of the servlet definition I use(change php4 with the path to the php exec) php com.evermind.server.http.CGIServlet interpreter php4/php It as worked of so far. You can even have jsp and php pages served in the same app, but there will be separate session for the jsp and php pages. Monday, September 03, 2001, 4:44:25 PM, you wrote: MM> Is it possible to serve PHP pages with Orion ? MM> If yes, is there any kind of document ? MM> TIA, MM> Marcello -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: I think, I will start a support site too....
Hello Kevin, I did a stress-test some time ago. It was a JSP page that made a DB Query joining 2 tables and used a findByAll method on a entity bean. Both tables where populated with 5000 items. I ran Jtest with 2 groups of 10 threads, spacing each http query from the same thread by 300mls. The DB server was a IBM Netfinity Single Processor Pentium III 700Mhz, with 512 megs of RAM running Win 2k. Orion was running in a IBM PC-300GL Pentium III 600m 256 megs of RAM and Win NT 4 SP 5. Jtest ran on the same machine. The network was a Ethernet-100. JDK 1.3 and orion 1.2.? (long time ago, indeed) >From a clean start (all machines turned off and on), orion ceased to respond after 6 hours. Using oracle and orion on the same machine (the PC-300GL), orion ceased to responde after 1 1/2 hours. DK> On the note of support, has anyone load-tested the hell out of Orion to see DK> how much it really can handle before it crawls? I think these are issues DK> support (or perhaps a white paper) should address. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: ORA-01000: maximum open cursors exceeded Exception
Hello Alex, Not a long time ago I ran with that problem using orion 1.4.5. It was at the university, and we were using a central DB server for all the courses. The problem was that I was using a lot of EJB (25+) in an implementation of TPC-W benchmark (a e-commerce like app), but the DBA configured ORACLE to allow a maxium number of open cursors that was less that the number I needed. So, contact your DBA. BTW, if you are working with oracle, is very useful to subscribe into otn.oracle.com. You can find all the manuals online. My most used link is http://technet.oracle.com/doc/server.815/a67785/toc.htm (Oracle Errors). Is for 8.1.5, but is still current. Tuesday, August 14, 2001, 5:58:47 PM, you wrote: AP> We are not using any direct connections to the database. We only use CMP AP> beans. So there might be something wrong in the way I am using the beans, AP> or the could be a bug in Orion which is leaving a lot of cursors open. Then AP> again, it could be normal operation and we just need to increase the number AP> of cursors allowed. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: not invoking my finder method?
The EJB specs says that if you declare a finder method on the home interface, the container will generate the apropiate finder. If you need a custom finder that you cannot express using pure and basic SQL (like your case) use a (stateles) session bean to declare the finder. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: multiple instances of a servlet?
Here is a clue: -- Servlet 2.2 Specs: For a servlet not implementing SingleThreadModel and not hosted in a distributed environment (the default), the servlet container must use only one instance per servlet declaration. A servlet declaration is part of the deployment descriptor of the web application containing the servlet, as described in Chapter SRV.13, Deployment Descriptor m2c >If you declare the same servlet twice in the web.xml (i.e, different >name, same class) you get two instances running. Check out your >web.xml and let us know. >We've implemented the request-controller pattern using a servlet as >the entry-point of all our jsp-pages. For some reason Orion creates >multiple instances of this servlet even though it isn't implementing >SingleThreadModel and there isn't anything peculiar about it. I have >the servlet printing to System.out every time init() is run and every >time it receives a request, it also prints the memory address of the >instance that's handling it. For some reason with this servlet there >are multiple instances (up to 3 so far) that handle these requests. >There doesn't seem to be any larger logic in which instance gets to >handle the request. It's not a problem per se but I just find it >rather strange since I assumed that only one instance of a servlet >would be created. Anyone else ran into this ? -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Session Sharing Again
Hello Joseph, As stated in an obscure mail long time ago (I coundn't find it in my folder ;) ) you can share sessions only between multiple instances of the same app, no between apps. If you need a central repository for info that needs to be accessed by multiple apps, JNDI is a good idea. Wednesday, August 08, 2001, 11:14:47 AM, you wrote: NJF> OK to not beat a dead horse or anything cause i have read through NJF> the previous emails to try and solve hte problem NJF> BUT ... i baiscally have an EJB App on there that sets sup session variables NJF> Then I have some jsps and servlets on the regular default site that need to NJF> read those session variables. NJF> In my default-web-site.xml I have this: NJF> load-on-startup="true" /> NJF> AND NJF> root="/scope-users" load-on-startup="false" max-inactivity-time="no shutdown" />> -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Transaction problems
Hello Christian, The tag in must match the in or . Also, specify a . Try putting this in your ejb-jar.xml: MyLogEnt * Required MyEntUtente * Required -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Registering EJB's on the fly
Hello K.J.,
Yes, it's possible.
If your bean is in "ejb/BeanB" and you want to put it in "ejb/BeanC"
use:
javax.naming.Context ctx=new javax.naming.InitialContext();
BeanBHome b = (BeanBHome) ctx.lookup("ejb/BeanB"); // ok, fine
ctx.bind("ejb/BeanC",b);
now:
BeanBHome c = (BeanBHome) ctx.lookup("ejb/BeanC");
should work.
Note: If you want to change the Object bound to a name, use
ctx.rebind instead.
KKJ> Dear All,
KKJ> I'm wondering how I can register EJB's on the fly in Orion. Say I have a
KKJ> bean that is registered and known. As the program runs I decide I also want
KKJ> it registered under a different name in the JNDI registry.
KKJ> thus, in pseudo code:
KKJ> BeanBHome b = lookup("ejb/BeanB"); // ok, fine
KKJ> BeanBHome c = lookup("ejb/BeanC"); // *agk!* fails
KKJ> jndi.register("ejb/BeanC", BeanBHome);
KKJ> BeanBHome c = lookup("ejb/BeanC"); // ah, now it works!
KKJ> Kees Jan
--
Best regards,
Rafaelmailto:[EMAIL PROTECTED]
Re: Documents and dynamic web pages
Hello Kemp, As you're using Oracle, think about exploring the Intermedia features. Hope this help. Friday, June 29, 2001, 6:57:12 PM, you wrote: KR> I am aiding a department that is using a two tier KR> application design, with a JSP engine and Oracle, to KR> build a dynamic web site. It's easy to deal with KR> images, by either using a URL link, or a BLOB field in KR> Oracle. Now I wonder how to deal with documents. Is KR> it best to store them as BLOBS, or perhaps PDF files, KR> and use software such as www.pdflib.com to transform KR> them. Any suggestions on the best approach. KR> __ KR> Do You Yahoo!? KR> Get personalized email addresses from Yahoo! Mail KR> http://personal.mail.yahoo.com/ -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: CMP-mapping: object properties
Hello Oliver, Try deleting the orion-ejb.jar.xml in the application-deployments dir. this will force orion to copy it again. Monday, June 25, 2001, 6:55:33 AM, you wrote: OS> Hi! OS> Until now I hav been quite happy developing with oc4j but this is OS> becoming frustrating: OS> according to orionsupport.com OS> (http://orionsupport.com/articles/complex-or.html) the server should map OS> CMP fields that are compound objects property by property (Strings) to OS> db-columns if I put an orion-ejb-jar containing OS> OS> OS> OS> into my ear. The directory where I have to put this file seems to have OS> changed somewhere around the oracle-licensing but neither putting it in OS> "myjar\META-INF" nor "myjar\orion" seems to affect the file created in OS> the server-dir under "application-deployments". The server every time OS> generates just OS> persistence-name="userDataObject" /> OS> and it maps my object to: "userDataObject LONG RAW null" OS> The really bad thing about this is even the example from orionsupport is OS> deployed this way. OS> Did I oversee any option that controlls this mapping behaviour? OS> Thank you in advance OS> Oliver -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
response.sendRedirect problem
Hi all, this is the scenary: I have a 2 jsp pages and 2 servlet. The flow is: pag1.jsp -->(via Post)--> -->servlet1 -->(via forward) --> -->servlet2 -->(via response.sendRedirect) --> --> pag2.jsp when viewed using some browsers in Mac (IE and Netscape alike), the redirect sends the url http://hostname/servlet/servlet2/http//hostname/servlet/servlet2 and I got a 400 Bad Request Error, no matter which url I use in the response.sendRedirect (as I recall, my last was "foobar/whatever") On windows and unix browsers works fine. Any ideas? -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Force Logon after X minutes
Hello Smith, Create a class that implements HttpSessionBindingListener. In the valueUnbound(HttpSessionBindingEvent event) put whatever code you need to logout . When you create the session, store an object of that class, so when the session expires the user logout. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Jay's posting
I'm posting this as a favor to Jay Amstrong Karl, Thanks for responding. This is already a long message, so I'll try to keep it short. I've been wrong before and, if that's the case now, then please forgive me. Lest anyone think I'm out to bash Orion, please refer to my vigorous and lengthy defense of Orion (e.g., "Subject: Re: SV: Not authorized to view this page" 16Feb2001). There have been several threads on orion-interest about lack of response from Evermind/Ironflare. Topics like "Anyone heard from evermind?" didn't appear without reason. Your response to that particular thread explained the transition from Evermind to Ironflare, which, in turn, spawned many concerns about the future of Orion (pricing, etc). Still, there were other subsequent threads about lack of response, especially regarding bug fixes. Several weeks ago, I notified you directly of an unauthorized production user. There was very little interest. In fact, there has been no follow up to let me know whether or not anyone even verified it. I assumed that there was so little interest in a few $1,500 production licenses because Ironflare was too busy trying to sign with Oracle. I also recently requested comments from you and Magnus for a live web presentation I am doing next week about J2EE on a budget. Again, no response. Since we don't know the details of the deal with Oracle, it's hard for me to comment on the value of the deal. What we do know is that other J2EE products (e.g., WebLogic, WebSphere, IPlanet, etc) sell for upwards of $10,000 per CPU. In the past, on this site, I have stated that I hope you an Magnus become millionaires. I'm not asking now, nor will I ever ask, how many licenses Ironflare has sold or the specifics of the contract with Oracle. That's your business. But I do know what Oracle's competitors charge, and Ironflare's possible revenue from this is theoretically enormous. Again, I'm happy for you. The reaction I've gotten on this agreement from other Orion users is that they're very happy about it, and You may wish to consider that many Orion users are trying to learn J2EE, have absolutely no experience with big business, etc are fearful of being banned from this and the Orion site. In a sense, I'm happy, too. Like many users, I am concerned about the future of Orion. I doubt Ironflare has an army of lawyers or a mountain of cash -- Oracle does. It may be increasingly difficult to allow Orion to be free for development, because Oracle's long-term business strategy is probably not to allow that. There is no getting around the fact that comments from users to this site have helped refine a product that is now directly benefitting a Fortune 50 company. I am definitely happy for you and Magnus. I've gained a lot more from Orion than I've given. I am somewhat encouraged by your comments, though still doubtful about the future. Maybe I'm just too cynical. Maybe I've dealt with too many big companies. Jay -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: Oracle deal gag
Hello Jay, First off all, don't take this as an attack. I'll just point a weak spot in your arguments. JA> - Neither Ironflare nor Oracle have ever really "announced" their JA> relationship. It's not "announced" at www.orionserver.com. Go to JA> http://www.oracle.com and look at their JavaOne pages and search for JA> "Orion". It's buried in the user manual, but not "announced". Orion, indeed, announced the relationship with oracle (check the right column ,under news, right after the place that says "Experimental: 1.5.2"). It's dated 06/05/2001 Also, Oracle has a press release, not saying "We Use Orion", but saying that they use code from Ironflare. (follow the link fron orionserver) Check theserverside.com (http://www.theserverside.com/home/thread.jsp?thread_id=7063) Also, I don't see nothing wrong serving as a free tester from Ironflare for it producs, given the minium price it charges for Orion. It gave our startup company a good economic relief on times where other cheap options where not nearly as good as Orion was (and is). Forte for Java has more or less the same aproach: Free tester using netbeans and Forte Comunity Edition Early Access Program, and charges 500$+ for the full product. I think that if both parties got benefits is ok. I mean, Ironflare got free testers, and we got an excelent, but cheap, J2EE container. If they know what they're doing, they will continue the orion development and give each stable version to Oracle. BTW, if you want, send me the mail you're trying to post and I'll try to post it. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: ATM example and Oracle
Hello Mustafa, You need to put the JNDI location of the Datasource. Check out data-sources.xml.html in the docs. This locations does NOT support connection pooling and transactions. Tuesday, May 29, 2001, 3:22:36 PM, you wrote: MC> I am trying to deploy and run the ATM example using MC> Oracle as database. Below is the data-sources.xml, I MC> anticipate a problem in the file since orion is not MC> finding the data source: MC> class="oracle.jdbc.driver.OracleDriver" MC> name="Oracle" MC> ---> location="" MC> connection-driver="oracle.jdbc.driver.OracleDriver" MC> username="scott" MC> password="tiger" MC> url="jdbc:oracle:oci8:@ora816" MC> inactivity-timeout="30" MC> /> MC> What does the location should be? MC> Any help is appreciated. MC> Thanks, MC> Mustafa MC> __ MC> Do You Yahoo!? MC> Yahoo! Auctions - buy the things you want at great prices MC> http://auctions.yahoo.com/ -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Taglib bug?
Hello Mikko, I'm using 1.4.5 and everything is working fine. Perhaps is a problem in deployment files? -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
A taglib question
Hello!
While using the well-known tag I got this error:
Attribute of type 'java.util.Collection' must be a request time attribute
The code that reproduce it:
My.jsp
<%@ taglib uri="mtags" prefix="mtags" %>
Display details
- com.enkamino.SomeClass
package com.enkamino;
public class SomeClass {
public SomeClass() {
}
public static Collection someFunction(int someParameter) throws Exception {
Vector vector = new Vector();
return vector;
}
I'm using the modified version that was posted some time ago. It works
ok in every other place.
Thanks in advance.
--
Best regards,
Rafaelmailto:[EMAIL PROTECTED]
Re: Interests sake
Win NT 4.0 SP 5 on development, staging and production At 15:53 03.05.2001 , you wrote: >Hi all, > >For interests sake, what OS is everyone on the list running orion on? > >Windows 2000? >WinNT >Linux? -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: How to avoid serialization of sessions on the server?
Hello Ismael, Orion doesn't serialize the session unless explicity told to do so. (We got problems with our shopping cart because of that) Why you think this is affecting the performance? It's done only at server shutdown. (I'm working with 1.4.5 too) Thursday, May 03, 2001, 3:40:13 AM, you wrote: I> On the application-deploytment\yourapp\ there is a orionweb.xml file that I> is used by Orion to define I> data about how the server will work. I> There is an option that define on which folder the server will serialize I> the session. This way if a the server I> does down then when it is restarted it is able to load the sessions it had I> running. I> Is there a way to avoid this behavior. I mean, I think this is slowing I> down the overall performance and it is a feature I> that I do not need. Then I would like to remove this feature. I> Is this possible? I> I am working with orion 1.4.5 . -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Have you clustered orion successfully? Please contact mchristoff@eldan.com
Hello Michael, Just a suggestion (I never tried clustering before). Instead of modify the default-web-app orion-web.xml try modifying the orion-web.xml of the app you want to cluster. Also try to use URL rewriting so the session id is always in the url. Just in case. Hope this work. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: orion not replicating session state - relatively urgent
Hello Mike, Did you follow the instructions in the http-clustering how to document? And, as far as I can understant (haven't tried clustering yet) you need to explicity pass the jsessionid in the url. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: orion not replicating session state - relatively urgent
Hello Mike, Try using this orion-web.xml. The persistence-path is not specified by default, so you need to declare it. This is the place where sessions are persisted across server restarts. Thursday, April 26, 2001, 12:20:39 PM, you wrote: MNC> subject: orion not replicating session information MNC> Hello. We have been experimenting with clustering orion servers and were initially successful. We started the load balancer, got our servers registered with it, and tested it using the MNC> servlet/SessionServlet program. Everything worked as it should. We modified the SessionServlet app to print the ip of the server it was running from. We had it count to 5, then we shut down MNC> the server, clicked refresh and the servlet went up to 6 on a different server. Perfect. MNC> The problem is that when we moved the session servlet to one of our other application directories, it no longer updated to 6, it started at 1 again. Why does orion replicate state only for MNC> applications in the default-web-app directory and not anywhere else? We tried adding to the orion-web.xml file (in the application-deployment directory) of our other apps and MNC> it still doesn't work. Here is a snip of our default-web-site.xml file: MNC> MNC> MNC> MNC> MNC> MNC> MNC> MNC> MNC> We have installed orion at a client site and need to get clustering working correctly within the next week. Anyone else successfully set up clustering. Any tips? See anything we're missing? MNC> We will provide any info you require. MNC> Thanks for your time. MNC> Michael N. Christoff MNC> Developer, Eldan Software, Ltd. MNC> Toronto, Canada -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: EJB Passivation problem
Hello James, Did you modified the orion-ejb-jar.xml in the $(APPDEPLOY)/$(EJBMODULE) directory or in the $(APPHOME)/$(EJBMODULE)/orion directory ($(APPHOME)/$(EJBMODULE)/META-INF in 1.4.8)? In the later case you need to delete the one in $(APPDEPLOY)/$(EJBMODULE) to force a complete re-deploy. Also, check if you put the file in the wrong place (note that the directory for orion-ejb-jar.xml has changed in 1.4.8) Hope this help. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Orion CLASSPATH
Hello Geoffrey, from the orion.jar manifest, the classpath is: xerces.jar ejb.jar jndi.jar jdbc.jar jta.jar parser.jar jaxp.jar xalan.jar tools.jar jsse.jar jnet.jar jcert.jar activation.jar mail.jar saxon.jar After that comes (globally) $(ORIONHOME)/lib and inside each app $(APPHOME)/$(EJB-MODULES) $(APPHOME)/$(WEB-MODULES)/WEB-INF/lib $(APPHOME)/$(WEB-MODULES)/WEB-INF/classes The order in the EJB-MODULES and WEB-MODULES is something I haven't defined yet. Hope this help. Monday, April 23, 2001, 12:29:31 PM, you wrote: GM> Hello all! GM> Can anyone tell me what Orion is doing with the CLASSPATH. I suspect it GM> is building GM> its own or adding to mine simply because it knows how to find certain GM> jars that I have not specified anywhere. GM> Any info appreciated... GM> -- GM> Geoffrey W. MarshallDirector of Development GM> --- GM> t e r r a s c o p ephone (415) 951-4944 GM> 54 Mint St #110 direct (415) 625-0349 GM> San Francisco, CA 94103 fax (415) 625-0306 GM> --- -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: parsing error
Hello doggie, Thanks for pointing it out. I misses it entirely! I found something interesting in the Specs: ### # Extracted from JavaServer Pages Specification Version 1.1 ### 7 JSP Pages as XML Documents The JSP page to XML document mapping is not visible to JSP 1.1 containers; it will receive substantial emphasis in the next releases of the JSP specification. Since the mapping has not received great usage, we particularly encourage feedback in this area. == ### # Extracted from JavaServer Pages Specification Version 1.2 ### 2.1.2 XML Document for a JSP Page All JSP pages have an equivalent XML document. This equivalent XML document is the view of the JSP page that is exposed to the translation phase (see below). A JSP page can also be written directly as its equivalent XML document. Unlike in JSP 1.0 and JSP 1.1 containers, the XML document itself can be delivered to a JSP container for processing. It is not valid to intermix standard syntax and XML syntax inside the same source file. A JSP page (in either syntax) can include via a directive a JSP page in either syntax. As I understood (please, correct me if I'm wrong) the JSP 1.1 container is not forced to accept the XML representation. But Orion is suppose to implement JSP 1.2 features, so I don't know. Perhaps they left it out because there is not sure if it will be in the final draft. Best Regards mailto:[EMAIL PROTECTED] Rafael Alvarez
Re: parsing error
Hello doggie,
I can't find the tag anywhere in the spec, but it
sounds like the <%! %> directive.
Try using:
<%!
private static final String[] toStringArray(int[] ori_array){
String [] str_array = new String[ori_array.length];
for (int i = 0; i < ori_array.length; i++){
str_array[i] = String.valueOf(ori_array[i]);
}
return str_array;
}
%>
> It seems that orion ignored the jsp tag completely.
--
Best regards,
Rafaelmailto:[EMAIL PROTECTED]
Re: deployment.cache and wrapper classes
Hello Adam, This is a VERY dirty trick. Make orion use the SLOWEST java compiler you can find, and force a re-deploy of the EJB module. All the wrapper's java files will appear during deployment in the orion home dir. If you're fast enough you can copy them before they disappear. Hope this help. Thursday, April 19, 2001, 10:34:31 PM, you wrote: AC> Hey guys, AC> I desperately need to have a look what's going on inside of orion's AC> wrapper classes. How can I access them? Previously on the list it is AC> mentioned that they are in the deployment.cache file, however when AC> I attempt to unjar that file, I only get one or two classes, not the AC> entire lot. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: AW: autoreload of jsp files failed while working hard on a single jsp
Orion autoreload features have worked very well al the time, either in development, integration and production enviroments, EXCEPT when we got a problem of date synchronization between our integration and production servers (our integration server have a date greater that the production one). Anyway, you can force reload deleting the $(ORIONHOME)/application-deployments/$(APP)\$(WEBMODULE)\persistence directory, where all the jspCache file are stored. And just a tougth. For all of you who have lots of EJB in their apps, I suggest you to use a faster compiler for orion. We use fastjavac which comes with Forte CE, and it REALLY cut down the restarting time. In our case, it cut it from 1 min 45 sec to 15 sec! Hope this help. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: A modification to ejbtags.jar
Isn't it wonderful the opensource world? :) -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: A modification to ejbtags.jar
Ok. that resolve it :) I made two mistakes: 1) This mail was intended for Karl, but I misclicked in my email manager. 2) The version I sent is not a working one. I just realized that I lost the last version in the last crash of our CVS... Mea culpa not having a backup. Anyway, here is the working version. I'm interested in performance metrics, since it uses reflection... -- Best regards, Rafaelmailto:[EMAIL PROTECTED] mtags.jar
A modification to ejbtags.jar
Hello Karl, I made a modification to the ejbtags.jar you published in the website. I modified the Iterate tag so it accept an optional field that defines an ordering in the iteration over the collection. The question is: should I publish it to the list or you guys check it out and decide? -- Best regards, Rafael Alvarez [EMAIL PROTECTED] mtag.jar
Re: ORMI port
Hello Jeremy, Yes, the ORMI port in orion is 23791 by default, and you can configure it in the config/rmi.xml file. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[4]: Removal of SBs from expiring HTTP sessions ...
Hello Mike,
I have to thank you. I wasn't sure of that, so I check it. I write
something like:
public interface test extends java.io.Serializable, javax.ejb.EJBObject {
void dummy();
}
And the compiler throwed and error (fastjavac from Forte CE 2.0). So I stated that it
couldn't be done.
But now, after a crash and hour ago or so, I checked again and voila!,
it compiled OK.
I want to apologize.
Thank again,
--
Best regards,
Rafaelmailto:[EMAIL PROTECTED]
Re[2]: Removal of SBs from expiring HTTP sessions ...
Hello Mike, Thursday, March 15, 2001, 7:31:23 PM, you wrote: MCB> Can't you just make the SB a HttpSessionBindingListener and implement MCB> valueUnbound() ? Nope. For that to work you need your Remote interface to extend HttpSessionBindingListener, but it already extends EJBObject. There is a workaround, is to tedios that it's not worth the effort. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Removal of SBs from expiring HTTP sessions ...
Hello Gerald,
You can create an object that implements HttpSessionListener
interface and override the valueUnbound method to call the
remove method or whatever you need to to with the SB.
Put it in the session, and when the session expires the
valueUnbound method is invoked. Be sure to implement the
java.io.Serializable interfaz to allow session persistence across
server restarts.
We use this technique for our Shopping Cart, and it has worked
pretty well so far.
Here is the class we use:
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import com.enkamino.cart.*;
/**
*
* @author Rafael Alvarez
* @version 1.1
*/
public class ControlSesion implements HttpSessionBindingListener,java.io.Serializable{
ShoppingCart cart; // This hold the reference to the SB, becuse
// you can't access to the session to retrieve
//it.
/** Creates new ControlSesion */
public ControlSesion(ShoppingCart cart) throws java.rmi.RemoteException{
this.cart = cart;
}
public void valueUnbound(final javax.servlet.http.HttpSessionBindingEvent be) {
try {
this.cart.clear();
} catch (Exception e) {
java.rmi.RemoteException re = new
java.rmi.RemoteException("Error clearing the Cart ",e);
re.printStackTrace();
}
}
public void valueBound(final javax.servlet.http.HttpSessionBindingEvent be) {
}
}
GG> I posted this msg this morning, but I haven't seen it appear on the list
GG> yet. I'm reposting in case it was lost ...
--
Best regards,
Rafaelmailto:[EMAIL PROTECTED]
Re: Colombo Java mystery -- the case of the unrecognized Parser jar
Hello Kemp, Try putting Parser.jar in the orion directory, or in the WEB-INF/lib. It seems that Orion doesn't use the CLASSPATH, because I need to put the jar files in the right place for them to work. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: How about the latest xerces.jar and xalan.jar?
Hello Kevin, Friday, March 09, 2001, 1:42:59 PM, you wrote: DK> Secondly, why is it when xerces.jar is in the Orion folder, Orion DK> does NOT use the version I have in the WEB-INF/lib folder? I thought (sorry DK> if I don't recall what the specs say on this) that libraries in the DK> WEB-INF/lib of a web-app override the ones in a server dir? Yes.. and no. The problem is that orion ADD /lib and WEB-INF/lib to the classpath, but if you look at the manifest file in orion.jar you can see that xerces.jar in the root dir is declared to be in the classpath at the beginning of orion execution, so if you refer to classes in xerces.jar it will use the ones in the root dir because they are the first found. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Case insensitive primary keys
Hello Jeff, You can do two things: .- In the EJBCreate change the user name to Upper or Lower case when setting it. Also in the PK class change it to Upper or Lower case. .- Override the PK class equal() method, to compare the username in Upper(Lower)case. Thursday, March 08, 2001, 7:30:39 PM, you wrote: JS> I have a primary key which is a string (user's name), and I would like JS> it to be case-insensitive. That is, if there is already a "bob" entity, JS> trying to create a "Bob" entity should throw a DuplicateKeyException. JS> Is there a way I can do this with Orion? JS> I vaguely recall reading something in the documentation about this, but JS> now I can't seem to find it. I'm starting to think that I imagined it. JS> Thanks, JS> Jeff -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: https second session problems...
Oops, I missed it in my last post... I got the same problem. What I did (and it worked, even as it seems that it shouldn't) was to store a session reference in the application context in the last non-secure page, and then retrieve it in the first secure page. Every object that was store in the session was retrieved. It's been working fine for over a month. Only be sure that you use a unique identifier to store it, and to remove the reference after you use it. It's not as clean as I wish it to be, but works... Final Note: I have the shared=true tag set, it suppose that Sessions are shared too, but they're not. Tuesday, March 06, 2001, 1:30:18 PM, you wrote: GM> First, a thank-you to Jay Armstrong for his SimplePortTester. Indeed, GM> Apache had port 443 locked up even though I thought I had stopped Apache. GM> Here's the problem of the day: GM> I'm only using JSP and Beans. It seems when I switch between http and https, GM> Orion crreates a 'second session'. I have inserted a System.err.println in GM> EVERY method of my SessionBean which has a single boolean property: GM> loggedOn. My comments (//) GM> Is this a bug or a feature? If it's a bug or a feature, is there a GM> work-around? It makes no sense to me why you would want to create a second GM> 'session'. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: SV: How to set orion to perform a timely task..
If you put the code at the init function, you can force the servlet to load at startup by putting the tag priorityNumber in the servlet description in web.xml. priorityNumber defines the order in which the servlets will be loaded at startup. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Session listener redirect
Hello Ron,
Two ideas:
.- Use an include in all your pages to check for some value in the
session to see if the user enters from the start page.
.- Use a servlet mapped to jsp and html. Where a user request a jsp or
html the servlet is invoked. Then you can check the request referer
and act acordingly.
Check the documentation of the web.xml file to see how servlet mapping
is defined.
To get the referer from the request, use
request.getHeader("Referer")
Tuesday, March 06, 2001, 7:33:01 AM, you wrote:
RQ> I have created the following session listener class which works but now I
RQ> want to redirect the client to the start page of the application if they are
RQ> trying to enter the application from another page.
--
Best regards,
Rafaelmailto:[EMAIL PROTECTED]
Re: non-secure and secure site
Hello Greg, To prevent the code duplication use the same app in both sites, and use the shared="true" flag so the ServletContext is shared over all the instances of the apps. Sometimes the session gets invalidate when going from secure to non-secure. We found a workaround to that, but it's a little tricky. Just store a reference to the session on the non-secure site in the ServletContext and retrieve it on the secure one. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: https problems...
Hello Geoff, Check that there is no other process using the port you specified (or 443 by default for SSL). Also, if you're running a WinNT or Win2k machine stop the IIS web sites. By some mystical reason it seems to use the port 443 even wheren there is no certificate installed. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: configuring an application
Hello G.L., you need to put the following in your server.xml: And create an application.xml file in /u/build/META-INF http://java.sun.com/j2ee/dtds/application_1_2.dtd"> C.A.I.S Application description cais-web -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Using your own web-site.xml instead of default-web-site.xml
Hello Matt, Monday, February 26, 2001, 8:46:34 PM, you wrote: MK> MK> load-on-startup="true" /> MK> MK> The root parameter has no meaning in the default-web-app tag. It always points to /. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: problem in accessing ejb from a bean in web-inf/classes directory .
Hello Prabahkar,
Monday, February 26, 2001, 7:38:40 PM, you wrote:
Try using
Object hdrObj = cntx.lookup("B2BOrderHeader");
I think I remember vagely a thread in this list about java:comp/,
but that was 3000 messages ago :). Anyway, this works fine for me.
--
Best regards,
Rafaelmailto:[EMAIL PROTECTED]
Re[2]: What documentation?
Hello Danut. Monday, February 26, 2001, 8:14:16 PM, you wrote: NN> At 05:37 PM 2/26/01 -0600, you wrote: >>A few weeks ago after I asked some questions and posted some opinion I was >>sent by some guys to RFM. Very inpolite >>Well, I still have the same problems and I am asking the same question: >>why is not possible to use a GUI tool to specify all I want for deploying >>my application? You need to code it yourself, because there are lot of orion-specific things, and they haven't code a good deployment tool for that. >>Speaking about documentation and RFM please go into >>"The deployment info for a J2EE-application. Manually created or >>automatically produced when auto-deploying a J2EE-application (.ear). It >>extends and substitutes the assembly info found in the " application.xml file If you want that orion uses your own orion-application.xml (and fill the blanks you left) put it under $(APP-HOME)/orion directory. You can do that for the orion-ejb-jar.xml ( $(APP-HOME)/$(EJB-MODULE)/orion ), and I think you can do it for orion-web.xml but I'm not sure where it goes. At some place in the archives of this list is a message with the whole dir structure. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: Beginner...
Hello Luis, Friday, February 23, 2001, 10:53:26 PM, you wrote: LJB> 1) How can I simply test a JSP? Put it under default-web-app/web directory on a fresh unziped orion distribution. After that, just run orion and point the browser to http://localhost/.jsp It can get a lot more complicated (building apps, etc) but not more difficult. LJB> 2) Where can I learn to use EJB?? (Urgent!! : ) ) First, I recommend you the book: Enterprise Javabeans by Richard Monson-Haefel (the O'Reilly book) Also, check out the developer's connection at java.sun.com Hope this help- -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: configuring jdbc with oracle...
Hello Paul, A stack trace would be useful. That way it's easier to find the error.
Re: http 500 errors
Hello Vaskin, Thursday, February 22, 2001, 3:39:33 PM, you wrote: VK> I keep getting internal server errors (HTTP 500), where do I go to debug VK> this? Which log file has this stuff? I need a stacktrace! It's not popping up on the console, and I couldn't find it in any of the obvious .log files. VK> Thanks in advance... Try in $(ORION-DEPLOYMENT)/$(APPNAME)/application.log For example: If orion is installed at /usr/bin/orion and your applications is named BogusApp, the log is in /usr/bin/orion/application-deployments/BogusApp/application.log There you can find every error thrown by your app. or you can tweak orion-application.xml in the same dir, under the flag to specify some other file, even configure your app to send you an email in case of exceptions. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: How can I use Application session?
hi Huibert, to expire a session use the invalidate() function: HttpSession s = request.getSession(true); // To expire it s.invalidate(); You can set the session timeout in the web.xml 15 Sets the timeout to 15 min. Hope this help
Re: Inactive application-scope bean problem
Hello Geoff, GM> If I don't use the application for some period of time and then try to hit GM> the index page, I get this error, which only restarting Orion seems to GM> fix... GM> 500 Internal Server Error GM> java.lang.ClassCastException: db.AppBean GM> at /Gold/home.jsp._jspService(/Gold/home.jsp.java:33) GM> at com.orionserver.http.OrionHttpJspPage.service(JAX) GM> at com.evermind.server.http.HttpApplication.xj(JAX) GM> at com.evermind.server.http.JSPServlet.service(JAX) GM> at com.evermind.server.http.d3.sw(JAX) GM> at com.evermind.server.http.d3.su(JAX) GM> at com.evermind.server.http.ef.s1(JAX) GM> at com.evermind.server.http.ef.do(JAX) GM> at com.evermind.util.f.run(JAX) GM> ... any ideas Have you modified the class at some point between each hit? That errors happen sometimes when the class in disk is different from the class in memory. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: ms access & Orion?
Hello faisal, If you use the jdbc.odbc bridge, yes. But, why do you want to use Ms Access (just curiosity) Wednesday, February 14, 2001, 11:55:05 PM, you wrote: f> does ms access work with Orion f> ? -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Faster EJB Deployment using fastjavac
I have tried the java compiler that comes with Forte For Java CE 2.0 (fastjavac) and it cut the deployment time of 50 EJB (a mix of entity and sessions) from 1 minute to 15 secs! I'm developing under win 2k, orion 1.3.8. Some one can test it under unix? My 2 cents
Re: Orion and SSL
Hello Daniel, Sorry for the delay in the answer. I had the same trouble migrating a certificate from IIS to orion. Did you generate the request to Verisign using the keystore where you're importing it? If not, you need to request a new certificate. Check Verisign to see how that can be done. Hope this help. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: R: R: frustrated - jdbc: No suitable driver
Hello Allen, DataSources gives you one advantage on the client side: Security. If you use a direct JDBC connection to a Database, your username, password and URL have to be placed in your class. A Datasource hides all those details, so if some one decompile your class (even JAXed classes are not totally safe) only the JNDI Datasource name will be found. It's up to you to set a security schema for the connection with the app server, but at least is one problem less to solve. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: large field bug ??
Hello Juan, Thursday, January 11, 2001, 3:53:41 AM, you wrote: JLC> had that problem JLC> it's a mapping problem... (oracle-schema) JLC> Strings get Mapped to varchars(size)... JLC> They get chopped at size chars... JLC> the only solution is to declare the field as java.lang.Object JLC> then use it as string Or you can edit orion-ejb-jar.xml and change the type of the field in the DB. The schema set it to varchar(255), but you can change it to any oracle type you want. look for a line like change that and voila! -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: JSP vs PHP
Hello Frank, Check this article from JGuru http://www.jguru.com/jguru/faq/view.jsp?EID=10596 Wednesday, January 10, 2001, 5:28:44 AM, you wrote: FE> Hi, FE> I just ran into a discussion regarding PHP vs. JSP (and ASP). A claim was FE> made that PHP was the better alternative as it is quicker in development FE> and gives you a better runtime performance. I have no hands-on PHP experience. FE> Can anyone explain me the benefits of PHP over JSP (and vice versa of course). FE> I'm bit reluctant to rely solely on marketing speak. FE> Thanks, FE> FE -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
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 () 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]
Re[2]: class cast exception
Hello! ML> This makes no difference. The exception is thrown, too. ML> But I found a solution: The Exception is thrown everytime after redeploying ML> my application. When I restart the server after redeploying everything is ok. ML> But I can't restart the server everytime something changes I found that problem with servlets and javabeans. Looking at the code from a compiled jsp (in the javabeans case) I found that the problem is in the JavaBean instantiation (Beans.instantiate), and it happens when the .class is changed. What puzzles me is that sometimes it happens, and sometimes it don't. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Orion slow startup
Hello scott, Check how many EJB are being deployed. Orion slows down startup when it's deploying EJB, because it involves generating the java sources of the skel and stub for the home and remote, and compiling them. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Deprecated function message while deploying stateful session bean
Hello everybody, After deploying a stateful session bean and restarting orion I get the following message: Auto-deploying ejb-jar (ejb-jar.xml had been touched since the previous deployme nt)... Note: CarritoCompras_StatefulSessionBeanWrapper0.java uses or overrides a deprecated API. Recompile with "-deprecation" for details. 1 warning I checked my code and there are no deprecated function. I'm using Orion 1.3.8 with sun jdk1.3 under win2000. This combo has been working fine so far. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
The way to use EJB?
Hello! This can sound a little off-topic, but is an interesting matter that we have been discusing at work. I'm currently working in two paralell projects. On one of them ( the first one) we designed the tables and used JDBC, until we decided to migrate to EJB 1.1. At that point we create one CMP EJB per table. Later we had to create BMP EJB to manage some complex relationships. The second project uses a lot of code from he first one, and the persistence need is the same ( same data). At that time I start to wonder that perhaps we were designing the wrong way. It looks like we were designing Objects FROM Tables, and EJB is a way to create tables FROM Objects. And most of the troubles of the first project were because of that. I mean, we create objects tha represented tables, rather than tables representing objects. Any comments? -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Question about jndi and Datasources
Hi! Is there a way to use orion as my connection manager, using jndi to perform a lookup for a Datasource, from an stand-alone app (not a client-app). I set up the following properties: java.naming.factory.initial=com.evermind.server.ApplicationClientInitialContextFactory java.naming.provider.url=ormi://myhostname/ java.naming.security.principal=username java.naming.security.credentials=password but when I try to set the initial context, I get the following: javax.naming.NamingException: META-INF/application-client.xml resource not found at com.evermind.server.ApplicationClientInitialContextFactory.getInitialContext(JAX) at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:668) at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:246) at javax.naming.InitialContext.init(InitialContext.java:222) at javax.naming.InitialContext.(InitialContext.java:198) at com.enkamino.login.deploy.DeployLogin.(DeployLogin.java:24) at com.enkamino.login.deploy.DeployLogin.main(DeployLogin.java:35) Thanks in advance. Rafael Alvarez
Re: Oracle on Orion
Hi! Is there any error message during deploy? Orion stops the auto-creation process if there is any SQLException. I also found that Orion don't create tables for beans that where already deployed, even if you drop them. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
test. Sorry for the inconvenience
This is a test, 'cause I didn't receive a mail from this list since 8 hours ago!
test. Sorry for the inconvenience
This is a test, 'cause I didn't receive a mail from this list since 8 hours ago!
Re: EJB vs Servlets
Hello Reddy, I agree with you in some points. Yes, complex OR mapping is solved in 2.0, but as you said is a draft. I won't risk put it into production right now (we have to finish the project by Octuber 17). About SQL, again I agree with you. I was using BMP EJB until I found out that Orion 1.3.6 generates automatically the findByAll() and findByXXX(). That way I have a better control over the beans I need. There is something I left out from the last mail. Because EJB1.1 complex O-R mapping is impossible (you need a workaround), sometimes I need a BMP Entity because I need a complex query. And for me, the myth was true. The migration from HyperSonic SQL to Oracle was transparent for the application. I just had to redeploy the application, and volia!, all the tables and constraints where there. The mass import was a little more tricky, (we used JDBC and SQL, query one place, insert in the other). Two side notes about independance from tables and databases: If you relay on triggers, multiple-field primary keys, foreign key for consistency, etc..., you have to stick into you RDMBS. And remember: never, ever, use a RDBMS that don't support multiple-field primary keys. They only give you headaches. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re: Performance
Hi, This mail is useful only if you're using entity EJBs. Because EJB is RMI on steroids (is more than that, but let's keep it simple), if you need more that one entity to get the data you need for the presentation layer you end up opening a lot of rmi connections, with the overhead it implies. The solution is simple, yet elegant: Create a Session Bean, collect all the data (raw data, not the remotes) from the Entity Beans and use that for the presentation. That way you use only one rmi connection. Hope this help. -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: EJB vs Servlets
I'm currently developing a big project using EJBs,a backend for a one-hour delivery company. In fact, I'm using CMP EJB for the data and a fakade object for processing.There were few factors that influenced the choice: .- You don't have to code in SQL. That says a lot on easy manteinance. .- Don't need to understand, as a programmer, the how of inner working of your RDMBS. .- If you have a RDBMS for development and another for production, you don't need to write SQL Scripts to recreate the table structure. .- The migration of data from one RDMBS to another is very easy. .- You can leave the transaction processing to the App Server. We encounter only 2 main disadvantages: .- Complex OR-Mapping are nor possible, and the ejbLoad-ejbStore method is not trustworthy. .- For each object you need to create AT LEAST 3 classes The first issue is solved using a Fakade class (see Fakade Pattern, I don't have the URL rigth now). The second issue is being solved by using a home made automated tool that generates the required classes. Anyway, EJB vs Servlets is a topic for a lng discusion. - Best Regards Rafael Alvarez mailto:[EMAIL PROTECTED]
Re: 2nd post, please help
Did you set all the properties you need to access the jndi tree in orion? You need to set these for a program outside orion access the orion JNDI tree: java.naming.factory.initial=com.evermind.server.ApplicationClientInitialContextFctory java.naming.provider.url=ormi://:/ java.naming.security.principal= java.naming.security.credentials= (Taken from www.orionserver.com documentation) Hope this help -Original Message- GD> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] GD> Sent: Monday, October 09, 2000 2:52 AM GD> To: Orion-Interest GD> Subject: 2nd post, please help GD> I have created a stand alone admin component outside the orion server, which GD> use the MailerEJB functions to send emails. An exception will be thrown in GD> MailHelper when I start running the stand-alone admin program, which is GD> "java:com\env\mail\MailSession not found". -- Best regards, Rafaelmailto:[EMAIL PROTECTED]
Re[2]: Stopping the Server
>> Hi, Any ideas why I get this when issuing the command to stop the >> server? Error: javax.naming.NamingException: Lookup error: >> java.io.StreamCorruptedException: Caught EOFException while reading >> the stream header; nested exception is: >> java.io.StreamCorruptedException: Caught EOFException while >> reading the stream header Thanks.-- This error happened to me a lot, until I found that the ormi port that orion is using is defined in rmi.xml(23791 by default). So, to restart orion you need to use something like: java -jar admin.jar ormi://localhost:23791/ -shutdown change 23791 with the port specified in rmi.xml I couldn't read the original message, so I don't know which is the line that he used. -- Rafaelmailto:[EMAIL PROTECTED]
