Access EJB's from a standalone client.
I'm having problem trying to access EJB's from a standalone client. I have no problem using these beans from a JSP-page within Orion but trying to access them from outside Orion doesn't work. Please let me know how to make this happen. I'm currently using version 1.3.8. Merry Christmas :) /M Andersson
RE: compound key
Ooops, Thanks Stanislas.
Don't for get the hashCode and equals methods in the primary key
classes
-Original Message-
From: Stanislas Truffaut
Sent: 20 December 2000 17:11
To: Tim Squires
Subject: RE: compound key
Hi,
be carefull a PK class as said in ejb specification must implement
hashCode() and equals() method
From: Tim Squires
Subject: RE: compound key
Date: Wed, 20 Dec 2000 04:21:46 -0800
What you need to do is create a primary key class with the primary keys in
it:
public class answerPK implements java.io.Serializable
{
public Integer Id;
public Integer Answer_Type_Id;
/**
* Constructor
*/
public answerPK( Integer Id, Integer Answer_Type_Id )
{
this.Id = Id;
this.Answer_Type_Id = Answer_Type_Id;
}
public answerPK() {}
public Integer getId() throws java.rmi.RemoteException
{
return Id;
}
public void setId( Integer Id ) throws java.rmi.RemoteException
{
this.Id = Id;
}
public Integer getAnswer_Type_Id()
throws java.rmi.RemoteException
{
return Answer_Type_Id;
}
public void setAnswer_Type_Id( Integer Answer_Type_Id )
throws java.rmi.RemoteException
{
this.Answer_Type_Id = Answer_Type_Id;
}
}
You can then specify in your descriptor:
prim-key-classanswerPK/prim-key-class
You still put the variables into your bean class and return the primary key
class ( e.g. answerPK ) from the ejbCreate.
public answerPK ejbCreate( Integer Id, Integer Answer_Type_Id )
throws CreateException, RemoteException
{
this.Id = Id;
this.Answer_Type_Id = Answer_Type_Id;
return new answerPK( Id, Answer_Type_Id );
}
Have fun,
Tim.
-Original Message-
From: Henry Hu [mailto:[EMAIL PROTECTED]]
Sent: 16 December 2000 02:21
To: Orion-Interest
Subject: compound key
Could anybody tell me how I can specify a compound key in the descriptor
file? When the primary key consists of 2 or more fields, the DTD told
me not to specify the "primkey-field/primkey-field "tag. However,
the deployment has an error as
No direct database fields for primary key
Please help.
Henry
Re: Stress orion = servlet engine failed arround 200 users
We've performed quite a few loadtests with logins, insertion into databases etcetera. The server used for testing has two PII 550 and 768 MB of RAM. As long as there are enough connections to the database (see previous posts about that) we can see very stable performance from Orion. We've had 40 threads from four different machines hitting Orion with 1000 continuous logins (basic authentication), with maximum response times at around 9 secs and averaging at around 6. happy-customer While I'm at it I might as well recommend PureLoad from InnovativeIT. Excellent tool with a nice pricetag - much like Orion. /happy-customer /Marcus -- Marcus Ahnve email: [EMAIL PROTECTED] Lecando AB Office: +46-(0)8-634 94 18 Sweden Mobile: +46-(0)70-462 19 18 www.lecando.comICQ#: 4564879
Re: Stress orion = servlet engine failed arround 200 users
On Thu, 21 Dec 2000, Marcus Ahnve wrote: happy-customer While I'm at it I might as well recommend PureLoad from InnovativeIT. Excellent tool with a nice pricetag - much like Orion. /happy-customer It's always nice to see these! What URL? (I've been looking into a better tool than httpbench myself, and I'm writing something simple... but if someone else has done it, I'll be happy to use their tools instead. JMeter's not able to measure finely enough, httpbench only hits one URL, MS's web stress tool doesn't work, another tool mentioned here requires admin access on NT to install...) --- Joseph B. Ottinger [EMAIL PROTECTED] http://epesh.com/ IT Consultant
Recursive call to non-reentrant bean error using BMP.
Hi all, I get this error message in the application.log file when I set the exclusive-write-access to "false" in the orion-ejb-jar.xml file. It's a BMP bean. 2000-12-21 10:23 Started2000-12-21 10:23 Error in bean TestHome: Error in ejbPassivatecom.evermind.server.rmi.OrionRemoteException: Recursive call to non-reentrant beanat com.evermind.server.ejb.AbstractEJBObject.startCall(JAX, Compiled Code)at com.evermind.server.ejb.EntityEJBObject.removeFromCache(JAX)at com.evermind.server.ejb.EntityEJBObject.endTransaction(JAX)at com.evermind.server.ApplicationServerTransaction.ao8(JAX, Compiled Code)at com.evermind.server.ApplicationServerTransaction.commit(JAX, Compiled Code)at com.evermind.server.ApplicationServerTransaction.end(JAX)at TestHome_EntityHomeWrapper3.create(TestHome_EntityHomeWrapper3.java, Compiled Code)at java.lang.reflect.Method.invoke(Native Method)at com.evermind.server.rmi.bf.do(JAX)at com.evermind.util.f.run(JAX, Compiled Code) The bean has an adapter class that implements the ejbPassivate method but even if I override the adapter implementation in the bean class I still get the error message. I set up a test the only create the bean, calls findByPrimary and then removes it so there no reentrant calls made. I have tried it on orion 1.4.0 and on 1.4.4 with the same problem. I am running on windows NT, java version 1.2.2 Anyonetried doing BMP+exclusive-write-access="false" it with success? Best regards, Stefan -- orion-ejb-jarenterprise-beans entity-deployment location="TestHome" name="TestEJB" exclusive-write-access="false" resource-ref-mapping location="jdbc/DefaultDS" name="jdbc/defaultPool" / /entity-deployment/enterprise-beans/orion-ejb-jar ejb-jarenterprise-beansentityejb-nameTestEJB/ejb-namehomecom.xxx.TestHome/homeremotecom.xxx.Test/remoteejb-classcom.xxx.TestBean/ejb-classpersistence-typeBean/persistence-type prim-key-classjava.lang.Long/prim-key-class reentrantFalse/reentrantenv-entryenv-entry-nameidType/env-entry-nameenv-entry-typejava.lang.String/env-entry-typeenv-entry-valueTestId/env-entry-value/env-entry env-entry env-entry-namelogSource/env-entry-name env-entry-typejava.lang.String/env-entry-type env-entry-valueTestEJB/env-entry-value /env-entryresource-refres-ref-namejdbc/defaultPool/res-ref-nameres-typejavax.sql.DataSource/res-typeres-authContainer/res-auth/resource-ref/entity/enterprise-beans assembly-descriptorcontainer-transactionmethodejb-nameTestEJB/ejb-namemethod-name*/method-name/methodtrans-attributeRequired/trans-attribute/container-transaction /ejb-jar
How to put a internet page to a file.
Hi,all: I want to read a internet page(e:http://www.microsoft.com/) and put the page to a file(e: c:/temp.txt). How to do ? Thanks very much! cgreen
QUESTION: Using the Standalone News Client
Hi Everyone, Quick question, one the News Application is installed, I can access it fine using a web browser, but I would also like to see how it works using the standalone client. This is contained in the ear file in a jar file. Do I need to extract it and add it to my classpath before I can use it, or it there some other way? cheers Bob
Re: Stress orion = servlet engine failed arround 200 users
happy-customer While I'm at it I might as well recommend PureLoad from InnovativeIT. Excellent tool with a nice pricetag - much like Orion. /happy-customer $14900 is a nice pricetag, indeed - depending from whose side you look at it. I dont see the similarities with orion, however (and sure am glad) regards
Re: How to put a internet page to a file.
This has virtually nothing to do with Orion. However, you can do this in a LOT of ways: "Save As" from your browser, you can use various mirroring tools, you could even use a URLConnection from java.net.* and use one of the java.io classes to write it to your local filesystem... as well as a thousand other ways. On Thu, 21 Dec 2000, cgreen wrote: Hi,all: I want to read a internet page(e:http://www.microsoft.com/) and put the page to a file(e: c:/temp.txt). How to do ? Thanks very much! cgreen --- Joseph B. Ottinger [EMAIL PROTECTED] http://epesh.com/ IT Consultant
OrionSupport
A week or so ago, I posted a new document to OrionSupport: http://www.orionsupport.com/articles/vision.html In this, titled "In the Future," I try to address what I see OrionSupport being, and what facilities I'd like it to provide. This is a community effort; in addition to lack of knowledge, I've a severe lack of time, but not will. However, this would be a LOT easier to see happen if I had specific input and contributions from you, the Orion community. If you've expertise in one of the areas mentioned, please let me know. I need code as well as contributions; code that doubles as a contribution to the site content is best, since that's more or less the modus operandi I see for OrionSupport (i.e., "Here's how you do X -- and we know it works, because OrionSupport uses it in exactly this way.") Please let me know what you'd like to see, as well. --- Joseph B. Ottinger [EMAIL PROTECTED] http://epesh.com/ IT Consultant
RE: How to put a internet page to a file.
hello,
here
is the code to get http page.
you
can write it were you want !
best
regards
//create url
objectInputStream
l_urlStream; URL l_url = new
URL(p_sUrl);
//get
a connctionHttpURLConnection
l_connection = (HttpURLConnection)
l_url.openConnection();
l_connection.connect();
//open stream
from connection l_urlStream =
l_connection.getInputStream();
BufferedReader l_reader = new BufferedReader(new
InputStreamReader(l_urlStream));
//process lines
while ((l_sCurrentLine = l_reader.readLine()) != null) {
file://write line were you want
!}
-Message d'origine-De:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]De la part de
cgreenEnvoyé: jeudi 21 décembre 2000 10:29À:
Orion-InterestObjet: How to put a internet page to a
file.
Hi,all:
I want to read a internet
page(e:http://www.microsoft.com/) and put the page to a file(e:
c:/temp.txt).
How to do ?
Thanks very much!
cgreen
Re: javax.naming.NameNotFoundException: agency not found
Does anybody know what could cause a javax.naming.NameNotFoundException:
my
bean name not found? I think my .xml files are fine, and I think this
used
to work!
We've got the same problem - it seems Orion 1.4.4 can't decide whether to
make EJB home interfaces available at "java:comp/env/ejb-name" or just
"ejb-name". We've replaced all our lookup code with something like this:
Object ref = null;
try{
ref = jndiContext.lookup("java:comp/env/ejb/WhateverEJB");
} catch(NamingException ne) {
System.err.println("Failed to find WhateverEJB attempting again
using non-standard mapping");
ref = jndiContext.lookup("WhateverEJB");
}
WhateverHome home = (WhateverHome)PortableRemoteObject.narrow(ref,
WhateverHome.class);
This at least lets the app function. Sometimes the first lookup works,
sometimes not. If and when we see a pattern that implies sort sort of reason
for this strange behaviour, I'll report it to the list.
P. Pontbriand
Canlink Interactive Technologies Inc.
CMP-findBy method
Hello everybody I have a problem i hav a CMP bean in which i am doing doing a findBy method to get some info from my table. As per the normal way i have mentioned the query in my home class. After deploying have also found the same query in the orion.ejb.jar xml file but when i run my application the look up gets done findByPrimaryKey method is also working but the moment it reaches this findBy method it gives me the following error. Note: My query looks like this in orion.ejb.jar xml file : finder-method query="select T_Hotel.hotel_name from T_Hotel where T_Hotel.trans_xid=$1" partial="false"!-- Generated SQL: "select T_Hotel.hotel_name from T_Hotel where T_Hotel.trans_xid=?" -- where hotel_name , trans_xid are my columns and the table name is T_Hotel java.sql.SQLException: Column not foundat sun.jdbc.odbc.JdbcOdbcResultSet.findColumn(Unknown Source)at sun.jdbc.odbc.JdbcOdbcResultSet.getInt(Unknown Source)at THotelHome_EntityHomeWrapper2.findByTrans_xid(THotelHome_EntityHomeWrapper2.java:959)at CMP.HotelServlet.doGet(HotelServlet.java:61)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)
A few (newbie) problems with Orion
Does anybody know what could cause a javax.naming.NameNotFoundException: my bean name not found? I think my .xml files are fine, and I think this used to work! Also, I'm getting a message: cmp-field 'carrier_id' not found in class eb.carriercompany.CarrierCompanyBean . I'm trying to access my Oracle database, but it's giving me a message like it's looking in my bean class. I have a orion-ejb-jar.xml file that I'm mapping a field called 'carrierId' to a field in the database called 'carrier_id'. Maybe I'm putting my xml file in the wrong place (ejb\orion)? Thanks, and great server! Merry Christmas! _ Get your FREE download of MSN Explorer at http://explorer.msn.com
Comunicating between EJBs and Application Client
I've have what I hope is a really easy question to answer. I have a number of Session beans deployed to Orion (1.4.4 level), and everything works great when communicating from an application client (JSPs and servlets running Apache Tomcat) to the Orion server. Now I want to add some EJB to EJB communication, with one EJB obtaining the home and remote interfaces of another EJB and executing methods on that remote interface. When I attempt to lookup my bean using the JNDI context, I get an exception being thrown that says that it can't find the JNDI lookup name in the Application Client. I assume that Orion is not finding the application_client.xml file within its own environment. What are others doing to rectify this situation? I assume that EJB to EJB communication is **very common**, as most people are using Session bean fascades around their Entity beans. An example of this sort of functionality and the steps needed to configure it should be available through Orion or orionsupport.com, but I could not find anything. Thanks in advance. -- chris bartling --
RE: Access EJB's from a standalone client.
In order to connect a stand-alone client to my EJBs I place a jndi.properties file next to the .class files of the client like this -- java.naming.factory.initial=com.evermind.server.rmi.RMIInitialContextFactory java.naming.provider.url=ormi://hostNameOfOrionServer/yourAppName java.naming.security.principal=admin java.naming.security.credentials=passwordOfAdmin -- By using the RMIInitialContextFactory I don't have to deal with creating an extra META-INF directory + XML file for the client. If I want to leave the jndi.properties file out completely, I can put the content inside a Properties object and pass it as parameter to new InitialContext(). Then I copy these jar files from the orion directory to the client computer: ejb.jar, jndi.jar, mail.jar, orion.jar, xerces.jar (2.86 MB in total) I finally run the client and pass the path of the following jar files as classpath: orion.jar, ejb.jar, jndi.jar I also add the path to the ejb.jar file containing the home- and remote interfaces of my EJB application. Orion will automatically and instantly create stub code from the interfaces when I run the application. /David
Re: OrionSupport
Hi Joseph, I don't have anything to contribute just at the moment, but when I get further along with a couple of my projects, I will be happy to contribute. Great site -- I am grateful for your help. Jay Armstrong [EMAIL PROTECTED] At 08:17 AM 12/21/00 -0500, you wrote: A week or so ago, I posted a new document to OrionSupport: http://www.orionsupport.com/articles/vision.html In this, titled "In the Future," I try to address what I see OrionSupport being, and what facilities I'd like it to provide. This is a community effort; in addition to lack of knowledge, I've a severe lack of time, but not will. However, this would be a LOT easier to see happen if I had specific input and contributions from you, the Orion community. If you've expertise in one of the areas mentioned, please let me know. I need code as well as contributions; code that doubles as a contribution to the site content is best, since that's more or less the modus operandi I see for OrionSupport (i.e., "Here's how you do X -- and we know it works, because OrionSupport uses it in exactly this way.") Please let me know what you'd like to see, as well. --- Joseph B. Ottinger [EMAIL PROTECTED] http://epesh.com/ IT Consultant
Re: CMP-findBy method
Your select statement in findBy method MUST include EVERY mapped property of your Entity Bean even if you use partial SQL statement.(i.e:"select T_Hotel.hotel_name,T_Hotel.trans_xid from T_Hotel where T_Hotel.trans_xid=$1") After findBy method found each of your entity beans application server loads the data into memory. That's why it MUST have EVERY field. Otherwise it would have to do n+1 SQL query to load your bean. 1 select statement is faster then n+1. Actually you probably don't even need to use partial="false" here. The only good use for partial that I found is calling stored procedures and doing complex joins in findBy methods.Boris - Original Message - From: tasneem To: Orion-Interest Sent: Thursday, December 21, 2000 9:54 AM Subject: CMP-findBy method Hello everybody I have a problem i hav a CMP bean in which i am doing doing a findBy method to get some info from my table. As per the normal way i have mentioned the query in my home class. After deploying have also found the same query in the orion.ejb.jar xml file but when i run my application the look up gets done findByPrimaryKey method is also working but the moment it reaches this findBy method it gives me the following error. Note: My query looks like this in orion.ejb.jar xml file : finder-method query="select T_Hotel.hotel_name from T_Hotel where T_Hotel.trans_xid=$1" partial="false"!-- Generated SQL: "select T_Hotel.hotel_name from T_Hotel where T_Hotel.trans_xid=?" -- where hotel_name , trans_xid are my columns and the table name is T_Hotel java.sql.SQLException: Column not foundat sun.jdbc.odbc.JdbcOdbcResultSet.findColumn(Unknown Source)at sun.jdbc.odbc.JdbcOdbcResultSet.getInt(Unknown Source)at THotelHome_EntityHomeWrapper2.findByTrans_xid(THotelHome_EntityHomeWrapper2.java:959)at CMP.HotelServlet.doGet(HotelServlet.java:61)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)
Is anyone using Jakarta Struts v1.0?
I've seen people talking about Struts v1.0, but the Struts site still advertises v0.5. What's the real latest version and where does one get it? Also, any early reviews of this tool? -=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: Distributed Transaction without EJB.
[Scott Stirling] JTS is not officially part of J2EE, so I haven't had to deal with it personally. http://java.sun.com/j2ee/transactions.html This page seems to imply JTS and JTA are both included, esp. since they specifically say that they're RI includes a transaction manager that supports both JTS and JTA... am I missing something? -- James Manning [EMAIL PROTECTED] GPG Key fingerprint = B913 2FBD 14A9 CE18 B2B7 9C8E A0BF B026 EEBB F6E4
Strange DataSourceUserManager behavior in 1.4.4
Hi: After a lot of effot I was able to use DataSourceUserManager. It works fine with my jsp's, but my standalone (swing) clients are only validated against XMLUserManager. Anyone has seen this behavior before? TIA, Werner Bohl Organization for Tropical Studies
