See section 4.4.4. You can write your own factory by implementing AspectFactory which
accepts an Element.
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For one the packaging becomes lighter. It may not be an issue but have this fear that
there might be some conflicts with maybe like xml parsers, etc.
The javabean style attribute setting sort of takes away the generic "property based"
configuration that was possible in the previous release. Wond
The jboss-common.jar dependency still exists. Why would it matter with other app
servers? Its only using a few org.jboss classes.
Read this and let me know if it answers your config questions:
http://docs.jboss.org/aop/aspect-framework/reference/en/html/xml.html#xml-aspect3
View the original
What was the reason for adding this dynamically as opposed to using the xbmean
deployment descriptor attribute?
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Finally got around to fixing this. Its in CVS now, will be in 1.0 Final release this
week.
Bill
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--
hany_bee,
What about a servlet filter or a Tomcat valve? This is how we implemented JBoss
Security integration with Tomcat. If you're dealing with web requests
(HttpServletRequests), then a filter or valve is probably a better solution anyways...
Thomas,
Kabir is working on JSP side of thin
Hey,
thanks for explaining diff between static and dynamic sec model. I will need dynamic
one in some application and was wondering whether to use already written JBoss'
security aspects.
Tomasz
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Thanks for the explanation.
The idea for the security framework is that, the declarative security model is static,
and it's very hard to do dynamic access control management. For example, say I have a
content management app, which I want to hook to an external acess manager. Let say I
can defin
Hi. My penny to disscussion.
I have Struts application and been using Tomcat server. I'd like to use JBossAOP with
it.
So what I've tried is: precompiled my plain servlets, jsps (in Struts meaning) with
jasper/jspc. This way I got sources of my web pages for my application.
As I have sources
JBoss AOP works in two ways. Either you precompile your Java .class files to push in
the AOP stuff, or you set JBoss AOP up so that it does the bytecode transformations at
runtime when the class is loaded. Load-time transformation requires hooks into the
classloader.
With JDK 1.4, we origin
What's this new classloader stuff that you guys have in head? Mind sharing the concept
a little bit?
What I'm trying to do is to prototype some security framework that can be applied to
web applications in a more or less uniform way. Unfortunately, having a clean and
clear-cut "interceptor" th
No, no problems - au contraire.
It wasn't obvious to be that it does this, and I apparently did not read enough of
AspectDeployer.java ;-/
Thanks
Heiko
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I don't believe you can intercept code with JSPs within precompiling the JSPs.
You MAY be able to do this with JDK 5.0 and our instrumentor, or the new JDK 1.4
classloader stuff we have in HEAD. Kabir is going to take a look.
View the original post :
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The way the AOP deployer works is that when jboss-aop.deployer is deployed, it inserts
.aop and aop.xml into the MainDeployer suffix list.
ARe you having problems?
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Hm. ok. I did probably misworded my post.
I did not want to assume that the aop files get implicitly deployed between 'deployer'
and 'sar'.
I wanted to ask if aop should not be added to either the DeploymentSorter or to the
XMbean-DD you mentioned.
Cheers
Heiko
View the original post :
http
No, in the absence of an explict declaration of the order, an unknown deployment
suffix will be deployed after all others. Note that in 4.0 the deployment suffixes can
be set via the SuffixOrder attribute of the
org.jboss.deployment.MainDeployer-xmbean.xml found in the conf/xmdesc directory.
V
On "within" + get/set. This is not possible. We will look to adding this after the
1.0 release.
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--
fixed in CVS. 1.0 will go out next week.
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---
Thi
Hi there,
Regarding this:
"charles_blaxland" wrote :
| - It appears that you can't refer back to a previously defined typedef when
defining an introduction? (ie: in a similar way to how you can refer back to a
previous pointcut definition when defining an interceptor). What I would like to
BTW, feel free to advertise the aspects you are writing on our WIKI.
http://www.jboss.org/wiki/Wiki.jsp?page=ContributingYourOwnAspects
Bill
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If you use load time transformation, then yes, it is definately more expensive to have
caller pointcuts although I haven't done any measurements. If you use the AOP
precompiler, doesn't really matter how slow it is...
Bill
View the original post :
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Great, thanks Bill!
"Bill Burke" wrote :
| Does this work for you???
|
| http://docs.jboss.org/aop/aspect-framework/misc/reflection.html
|
Cool - this is very nice and will do exactly what I want :-)
Out of curiosity, is there much overhead in adding global call/field pointcuts (ie:
"charles_blaxland" wrote : I've been writing some aspects with JBoss AOP and I like it
a lot so far :)
|
| Some questions/suggestions:
|
| - The "within" scope limiter doesn't seem to work with field/set/get pointcuts?
Should it?
|
|
I'll add this to the list. So, the answer is
Yes, I wanted to do this as well for awhile.
I wanted aspects scoped per ClassLoader domain, per Loader Repository. If you're
interested in implementing, let's discuss over email some ideas.
[EMAIL PROTECTED]
View the original post :
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Think the problem with this is that the serialization spec requires
readObject/writeObject to be private, but AFAIK there's no way to introduce private
methods into your objects (or am I mistaken?). Anyway, I've found another way to
solve my problem without this.
View the original post :
htt
anonymous wrote : It is not correct type of comparition.
The comparison relates to the additional functionality that PrintWriter.println
provides in and above that provided by Writer.write.
In this case it is simple, just adding the correct eol characters for the platform,
but it is an example o
"KevinConner" wrote :
| Think of my solution as the PrintWriter that surrounds the Writer ;-)
|
E-e :/
It is not correct type of comparition. But thanks for sample. Let's have a closer look
at it, by first showing present state of JBossAOP API
| public void MyAspect
| extend
anonymous wrote : What type of simplicity are you talking about?
I was talking about the simplicity at runtime, i.e. calling the aspects, and not
during bytecode annotation.
anonymous wrote : The case we're discussing (types of advices) is simple to imagine.
Come on..
It is very simple to imag
"KevinConner" wrote : Hiya guys.
|
| ... as it provides the advices that remove the code duplication
|
With full respect to your code Kevin (I use it):
I will send you my custom code for using writting Strings to System.out. Why should we
use System.out.println(String) method if we ca
Hiya guys.
I'm busy tracking down JacORB problems at the moment so missed this.
The code that I have given you is 'fully functional' in so far as it provides the
advices that remove the code duplication. Give it a try, you may like it :-)
I tend to agree with Bill on the matter of simplicity.
Bill, will you agree with me that code duplication is something bad?
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before/after returing/after throwing could easily be added to JBoss AOP with a day of
work,
But
Again, I still see this as nothing more than you wanting to avoid having a
try/catch/finally block, or to avoid calling invocation.invokeNext(). IMNSHO,
ordering of aspects and how the aspect
Not in there yet, but I think you can do it with either an introduction, or an
execution pointcut.
The introduction would introduce the read/writeObject method if the object did not
implement Externalizable. If the object does implement Externalizable, then intercept
the read/write of the Exte
Hi Kevin!
I was on short vacations, so forgive delay..
I'm impressed your patience for this topic. I've lost my energy for trying to explain
why one needs 'before-after' types of advice.
When you get fully functional code for "emulation" of before-after, send it to
JBossAOP CVS, so other app d
"Bill Burke" wrote : I want to add a serialization-pointcut. What it will do is
intercept write/readObject for Serializable, or read/Write object on Externalizable.
Hi Bill,
I have a need for exactly this feature. Did it ever get implemented? I can't find a
reference in the doco about it. I
Thanks, fixed...
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Here ,if you unpack jboss-aop_1.0RC2.zip archive
\jboss-aop_1.0RC2\jboss-40-install\jboss-aop-jdk50.deployer\META-INF
lack the jboss-service.xml file.
so users must copy jboss-service.xml from jboss-aop.deployer file.
View the original post :
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Hiya Tomasz.
I eventually found some time to put together one of my ideas, here's an example using
it (uses the annotation compiler).
The annotation interfaces.
package knrc.beforeAfter2;
|
| /**
| * @author kevin
| */
| public interface after
| {
| }
package knrc.beforeAfter2;
oh, ok, good idea
i
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---
This SF.net email is
(My apologies for a double post .. my last post was cut off)
One example is what Adrian wrote about in this thread
http://www.jboss.org/index.html?module=bb&op=viewtopic&t=50041Class.forName()
The important snippet is ..
"You should always use Thread.currentThread().getContextClassLoader().loa
One example is what Adrian wrote about in this thread
http://www.jboss.org/index.html?module=bb&op=viewtopic&t=50041Class.forName()
The important snippet is ..
"You should always use Thread.currentThread().getContextClassLoader().loadClass()
which avoids Sun's broken caching.
But I have never
Can you spec this out more? I don't understand what you mean.
Bill
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you can't have multiple XML's per Jar file. BUT... You can have multiple JAR files
that have an xml file within them.
We could implement this thoughInterested in doing it?
Bill
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Reply to the
Thanks, that works fine. But how do I make it work if I package the app as a jar file?
How can I make it read multiple binding files from the jar file?
thx
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Short answer is YES
For our new doco here:
http://docs.jboss.org/aop/aspect-framework/reference/en/html/running.html
anonymous wrote :
| You need to tell JBoss AOP where the xml configuration files of your bindings
are. This can be done in one of these two ways:
|
| * Set the jbo
Hi. I'm not an expert about JBossAOP packaging, but this is what I use:
|
|
|
| &developer1.ent;
|
|
|
On Windows, you must change "/" to "\" I think.
You may also use Ant task, to join several XML files into one.
Regards,
Tomasz
View the original post :
http://www.j
"KevinConner" wrote :
| ...I must admit that if I was faced with an aspect containing 30 advices then I
would be wondering whether the design was correct. Is this connected with your
pervayler library? If so, we can take this offline.
|
| Kev
|
Hello,
Oh my, no way! :) It's for my c
Hiya Tomasz.
anonymous wrote : Yes it works. I'm impressed.
Thanks, I aim to please ;-)
anonymous wrote : Ok. But still it is a workaround, although smart and works for this
example.
I wouldn't call it a workaround, just a clean design that refactors common code and is
based on the JBoss API :-
Thanks for your time Kevin.
Yes it works. I'm impressed. With your solution my 3DAspect looks simple. It's simple
to configure it in way that you've provided. And my ExceptionHandlerAspect4D is a
simple old JBossAOP aspect, with plain invoke(..). That's enough for me.
Ok. But still it is a work
Thanks for explanation..
t.
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---
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what are the exact semantics of before/after?
You get the same thing with around. You want before?
| try
| {
| doBefore();
| invocation.invokeNext();
| }
|
You want after?
| try
| {
|Object rtn = invocation.invokeNext();
| doAfter();
| return rtn;
Ok, RC1 will not work with JBoss 3.2.5 as the base deployer class has changed in 4.0.
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---
It was just a thought... It could be very messy - I agree.
Some combination of ThreadLocal's and cflow might help a bit
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"kabkhan" wrote : But you could create in interceptor to intercept method(), and store
the parameters somewhere, and then access that from your other advice.
To make a tunnel you say. Thanks for it. It could be done, but this place of storing..
it smells bad for me. I'll consider both. For now I
But you could create in interceptor to intercept method(), and store the parameters
somewhere, and then access that from your other advice.
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"Bill Burke" wrote : you cannot get arg1 as it is higher in the stack.
Sh.. :(
Thanks for quick answer.
t.
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you cannot get arg1 as it is higher in the stack.
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---
I have not tested RC1 yet with 3.2.5.
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This SF
Hi
I saw no jboss-aspect.jar in jboss-aop-1.0RC1.zip nor in
jboss-aspect-library-1.0RC1.zip (however there do exists jboss-aspect-library.jar that
contains the class that was not found
-org.jboss.aspects.security.SecurityClassMetaDataLoader. So the jar is there in my
server/configuratoin_name
Ok, I have updated the WIKI page. Let me know if that works for you.
Sorry for crappy installation. WE'll improve this with the next release.
Regards,
Bill
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What exactly is the error?
This WIKI page is out of date. It needs to be updated. I didn't get a chance to do
it before the FINAL release. We'll be putting out a detailed reference guide on
Friday.
The AspectDeployer service is not emedded in the aop.deployer jar and can be
configured in ao
You must also have the jboss-aspect library within the lib/ directory.
Let me know if that fixes it.
Thanks,
Bill
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anonymous wrote : 16:53:25,259 INFO [ServerInfo] Java VM: Java HotSpot(TM) Client VM
1.4.2_05-b04
| ,Sun Microsystems Inc.
| 16:53:25,259 INFO [ServerInfo] OS-System: Windows 2000 5.0,x86
| 16:53:25,852 INFO [Server] Core system initialized
| java.lang.ClassNotFoundException: org.jboss.
which error are you seeing?
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Is there a way / workaround to overcome this error ? (I want to work with AOP on
jboss-3.2.5 and I receive this exception when starting up jboss with the
EnableTransformer=true...)
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Reply to the po
Sorry, it was to hurry.
My pointcut doesn't make sense at all. I can have "set(my.*->*)" without using
"within".
I've tried to use it in another poincut together with "(set(...) OR call(...) OR
execution(...)) AND within(my.package)". That's why.
Sorry, forget about that.
t.
View the origina
execution and set/get do not make sense with within as their purpose
is to totally wrap EVERY invocation.
within and withcode only make sense with call. I guess a callfield is necessary.
I'll add that to the TODO.
Bill
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Ok, this is fixed in HEAD and will be in RC2 release on Friday.
Bill
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---
I have changed the method findMethodByHash and my code is working now. Is it a general
solution?
public static Method findMethodByHash(Class clazz, long hash) throws Exception
{
System.out.println("findMethodByHash " + clazz.getName());
Method[] methods = clazz.getDeclaredMetho
Long post ..
"Andrzej Krzywda" wrote : Hi!
|
| You can write an aspect which contains only precedence rules. This aspect you can
use as a configuration file of your application:
|
| public aspect ForumConfiguration {
| |declare precedence: Security, Logging, *;
| | }
|
Hi
And I was going to work today with a thought about posting about this simpler way that
I found out yesterday evening... Ehhh :)
Tomasz
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Yes. It uses GPL license. (www.jcoverage.org)
Thanks
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-
Yikes, sorry I missed your post before
This may be a better approach:
|
|
|
|
This will bind your interceptor to every constructor of every class tagged as @my.root.
Bill
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Is JCoverage free?
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No. The @Tx annotation is not @Inherited and JBoss AOP doesn't support @Inherited
annotations (when they trigger pointcut bindings).
Thanks for bringing it up. I'll add it to the list.
Bill
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Re
Yupiii!
And once more, I reply to my own post :)
So here is the solution with new TYPE_DEF feature:
jboss-aop.xml:
|
|
|
|
|
|
|
|
|
Interceptor:
public class RootInterceptor
|implements Interceptor
| {
| public Object invoke(Invocation invo
Hi!
"nthx" wrote :
| PS. In AspectJ they did it wrong. They have "precedence" keyword which must occur
in one of your concerns. But if you develop few independent AOP libraries and don't
want to couple them?
|
| E.g. "precedence: AOPConcern1, TotallyDifferentConcern2;"
|
I can't agre
How about per-method injection? I create a DAO where different methods need to
reference different back-end systems.
public void persistOldContract( Contract c )
| {
|@Injected(LEGACY_BACKEND) ContractPersistManager cpm;
|cpm.save( c );
| }
|
| public void persistRecentContra
Hi. I forgot to say that the intercepted class is Connector. All others are not
intercepted.
I am using the SystemClassLoader. The pointcuts are being defined using the API and
not the XML.
Thanks,
Marcio Alves
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Hi, you are right. I am using "call(* packageName->*(..))".
The following is the code that is causing the exception. When I remove conn.close(),
the exception is not thown.
MessageConnection conn = null;
String url = "sms://" + getAttribute() + ":134";
try {
The caller pointcut should not be called.You can use the -report switch with the
precompiler (the ant task would be report="true") and it will dump out all matching
joinpoints and the bindings that they are attached to.
a) are you using a "call" pointcut anywhere? It looks like you are. (or
Thanks for the tip. I had a feeling JGroups might come into play.
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---
Bill Burke wrote:
> Does JBoss cache have the ability to register for cache changes? I have an AOP user
> that is building a dynamic cluster-wide aspect manager. They need the ability to
> have a replicated shared cluster-wide structure, but need to be able to notify on
> changes so that they
You may be able to use JBossCache. I'm not sure if you can register to listen for
cache changes (so that you can update the aspectmanager), but you could use JBossCache
and use JGroups to send a notification to the cluster to update the AspectManagers.
What I"m REALLY interested in is a DEFAULT
We would defintely be interested in it if you were willing to maintain and document it.
Contact me: [EMAIL PROTECTED] and CC [EMAIL PROTECTED]
Bill
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yes, we absolutely need precedence. I hope it gets into the initial release.
What is your suggestion for syntax? Pure XML? A Package annotation? Per Aspect or
Per Advice?
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Reply to the post :
"kabkhan" wrote : I'm currently working on specifying things via annotations :-)
|
That's why I'm trying to "warn" you before :)
t.
PS. I don't have idea how to solve it, in a nice manner, yet. When I get some I'll let
you know..
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I'm currently working on specifying things via annotations :-)
The ordering question is a good one...
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Hi!
I have just moved the definitions of the mbeans AspectManager and AspectDeployer to
the "beggining" of jboss-service.xml (just after classpath tag and jboss starts up
fine!!! (i dont think this should have any effect the order of the mbeans but it
seems like it has...) but anyway its now f
Seems like one of the aspect services failed to deploy. Is there any stack traces in
bootup?
Thanks,
Bill
BTW, I have not tested JBoss 3.2 integration with latest RC releases yet.
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I think I know what the problem is. I don't think Javasssist's copy method copy's
CodeAttributes which have the line numbers. I'll see what I can do.
Bill
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PS in 2) I mean run the aop compiler
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---
This SF.
When trying to figure out what was going on I did the following on the small examples
in the tutorial. I realise that this will probably be totally unpractical on a real
project due to the number of classes. Anyhow, here it goes:
1) Compile classes
2) Precompile classes
3) Decompile classes, an
If a particular joinpoint is "prepared" you do not have to recompile or even shutdown
the JVM to add or remove an advice from a particular joinpoint. You can also
add/remove interceptors on a per instance basis at runtime with a prepared joinpoint.
How to prepare?
This will instrument the cl
"rmcdonough" wrote : .I've been doing more reasearch on AOP overall
| and more research on AspectJ and JBossAOP. Now I'm not sure that I'll be
| phrasing thsi right, but it seems that AspectJ doesn't allow you to apply
| advice or introduction on an existing class without explicitly de
In JBoss AOP you can attach things dynamically via the AspectManager class. You need
to prepare your class first:
http://www.jboss.org/wiki/Wiki.jsp?page=JBossAOP Go to Tutorial/Dynamic AOP
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http://java.sun.com/xml/jaxrpc/
http://www.jcp.org/en/jsr/detail?id=109
http://jcp.org/aboutJava/communityprocess/final/jsr153/index.html
You will have to write a Handler to propagate principal and credential information.
If you want role-based security at the POJO level, check out these aspect
Bill, first of all, thanks for your attention!
Well, I really noted that there is a possibility to do what I want! This is a big goal
to me! Where I can find some documentations ou tutorials about the development of
"Aspect Web Services" in Jboss? Docs about EJB was going exposed as Web Service?
In JBoss 4.0 and J2EE 1.4. Stateless Session EJBs can be exposed as web services.
You can propagate principal and credentials using basic auth, but the spec really
doesn't specify security semantics.
Security isn't difficult to write as an aspect, but what is difficult is plugging in
how the
Hi
After long time I had a fresh look at my code and it happend the exception is _my_
fault. Sorry guys.
During "around Forum construction" I've returned object of different class, so that
was the cause.
Sorry for this, once more..
t.
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