do you put in the line
Tapestry-Module-Classes: net.godcode.tapex.testlib.LibModule
manually or do you use a maven plugin to generate it?
if you do it manually ensure that you have exactly 2 linefeeds at the
end of the MANIFEST.MF file or it won't work.... a really annoying Java
bug...
just a guess :)
g,
kris
Chris Lewis <[EMAIL PROTECTED]>
20.09.2007 14:51
Bitte antworten an
"Tapestry users" <[email protected]>
An
Tapestry users <[email protected]>
Kopie
Thema
Re: [T5] Can't make custom library work
Ick - that would be annoying if it was because you aren't using Jetty...
Answers to your questions:
1. No, my lib module has only that method.
2. Yes. When packaged it lives right beside the component class.
3. No. My template is simply this: "<div>${message}</div>"
4. Yes (see below).
5. No, not significantly (see below).
Here is are all files in my component jar:
META-INF/MANIFEST.MF
META-INF/maven/net.godcode.tapex.testlib/tapestry5-testlib/pom.xml
META-INF/maven/net.godcode.tapex.testlib/tapestry5-testlib/pom.properties
net/godcode/tapex/testlib/components/TestComp.class
net/godcode/tapex/testlib/components/TestComp.html
net/godcode/tapex/testlib/LibModule.class
Ignore the items under META-INF/maven/ - maven sticks these in generated
artifacts.
Here is my MANIFEST.MF:
Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Created-By: Apache Maven
Built-By: chrislewis
Build-Jdk: 1.5.0_07
Tapestry-Module-Classes: net.godcode.tapex.testlib.LibModule
Again, maven sticks much of that in the manifest. The only line I tell
maven to insert is "Tapestry-Module-Classes". This of course points to
my lib module class.
Here are my exact source files, in case they are of help to you. See my
earlier post on how I reference my components and the inconsistency,
depending on if you use instrumentation or not.
TestComp.html (component template):
<div>${message}</div>
TestComp.java (component class):
package net.godcode.tapex.testlib.components;
import org.apache.tapestry.MarkupWriter;
import org.apache.tapestry.annotations.BeginRender;
/**
* TestComp
*
* @author Chris Lewis Sep 19, 2007
* @version $Id$
*/
public class TestComp {
public String getMessage() {
return "Test message";
}
@BeginRender
void beginRender(MarkupWriter writer) {
writer.write("??");
}
}
Note that the beginRender was just a test. The result is output
appearing before my template body, as expected.
LibModule.java (library module):
package net.godcode.tapex.testlib;
import org.apache.tapestry.ioc.Configuration;
import org.apache.tapestry.services.LibraryMapping;
/**
* LibModule
*
* @author Chris Lewis Sep 19, 2007
* @version $Id$
*/
public class LibModule {
public static void
contributeComponentClassResolver(Configuration<LibraryMapping>
configuration) {
configuration.add(new LibraryMapping("testlib",
"net.godcode.tapex.testlib"));
}
}
And thats it. I can refer to my components using "<t:testlib.TestComp/>"
or with instrumentation "<div t:type="testlib/TestComp"/>" - note the
difference. Deviations will cause an error, and this should be
considered a bug.
Let me know how you progress, and share your exact source if you'd like.
sincerely,
chris
Kolesnikov, Alexander GNI wrote:
I wonder if my problem is a classloader issue... I guess most people
here are running Jetty why I am using Tomcat...
Which server do you use, Chris?
-----Original Message-----
From: Kolesnikov, Alexander GNI
Sent: 20 September 2007 11:17
To: Tapestry users
Subject: RE: [T5] Can't make custom library work
Hi Chris,
I know all this about how to reference the component. And I don't use
Maven. I check the contents of the packaged JAR to see if everything as
expected. And still, I can't make my trivial component available to the
application.
Could you please tell me a few things about your library:
1. Does your library module contain anything but
contributeComponentClassResolver() method?
2. Does your component(s) have a template, and if yes, is it packaged
next to the component class, in the same Java package? 3. Do you use
<html xmlns:t="..."> </html> in your component's template? 4. Do you
package components and module in the same way as I do:
META-INF/MANIFEST.MF
com/test/TestModule.class
com/test/components/TestComp.class
com/test/components/TestComp.html
5. Is your MANIFEST.MF significantly different from mine:
Manifest-Version: 1.0
Tapestry-Module-Classes: com.test.TestModule
Thanks,
Alex
-----Original Message-----
From: Chris Lewis [mailto:[EMAIL PROTECTED]
Sent: 19 September 2007 18:29
To: Tapestry users
Subject: Re: [T5] Can't make custom library work
Ok I've made some progress.
First of all, my component not loading issue was a problem with
eclipse/maven plugin. As I said I created a different project for my
test component lib, also using maven, and used mvn install to install
the artifact to my local repo. I manually added this artifact as a
dependency to my Tapestry app's pom.xml, and then things got a bit odd.
The maven 2 plugin creates an eclipse library that dynamically includes
all artifact jars of each artifact listed as a dependency in the pom.
However, with my test lib it didn't to this. Instead it showed a bland
folder icon with the same name as my test lib project. I verified this
was caused by my pom entry by removing the dep from the pom and cleaning
the project. So to confirm this test I created a "normal" user library
(called "Mine") and manually added the test lib artifact to it. Now I am
able to use my component in my tap app! If anyone has any suggestions
for configuring eclipse/m2 plugin to behave, that'd be much appreciated!
Now how to reference the component. I've noticed some slight
inconsistencies in using components (or passing component params) in
templates. For my component, if I want to use tap's invisible
instrumentation, I have to do this:
<div t:type="testlib/TestComp"/>
Note that this WILL NOT work:
<div t:type="testlib.TestComp"/>
However, the inverse is true using tap-namespaced tags:
<t:testlib.TestComp/>
Works, while this DOES NOT:
<t:testlib/TestComp/>
That makes sense because "<t:testlib/TestComp/>" is invalid XML, but the
fact that "<div t:type="testlib.TestComp"/>" causes an error is
inconsistent, and I find it a bit annoying.
I hope this helps - let me know how you fare.
sincerely,
chris
Kolesnikov, Alexander GNI wrote:
Hi Chris,
The only idea I have so far is that the problem is in HTML template
that goes into the same package as the page class. I would try
creating a component without template to test this. Do not have time
at the moment though, will try later.
I suspect that T5 with its pro-Maven orientation expects to see HTML
stuff in some other place, like resources.
I wonder if Ted could give us a hint on how he managed to package his
components...
Cheers,
Alexander
-----Original Message-----
From: Chris Lewis [mailto:[EMAIL PROTECTED]
Sent: 19 September 2007 14:59
To: Tapestry users
Subject: Re: [T5] Can't make custom library work
Hi Alexander,
I too am curious about this - I'm in the same situation. I've started
poking into ComponentClassResolverImpl but haven't caught anything
yet.
Do tell if you discover anything.
sincerely,
chris
Kolesnikov, Alexander GNI wrote:
Finally, logging shows that contributeComponentClassResolver() method
in the library's module actually runs. Does Tapestry expect the
components not to be POJOs? Questions, questions... Will go look into
the source.
-----Original Message-----
From: Kolesnikov, Alexander GNI
Sent: 19 September 2007 13:45
To: Tapestry users
Subject: RE: [T5] Can't make custom library work
The additional detail is that if I change the reference in the
manifest misspelling the module name, the application doesn't start,
throwing ClassNotFoundException. Which proves that Tapestry does read
the manifest and tries to load the library's module. Why it doesn't
see the components then?
-----Original Message-----
From: Kolesnikov, Alexander GNI
Sent: 19 September 2007 11:45
To: Tapestry users
Subject: [T5] Can't make custom library work
I am trying to create and use a trivial custom library.
Here is the component:
TestComp.java:
package com.test.components;
public class TestComp {
public String getMessage() {
return "Test message";
}
}
TestComp.html:
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";>
<p>${message}</p>
</html>
Here is its module:
package com.test;
import org.apache.tapestry.ioc.Configuration;
import org.apache.tapestry.services.LibraryMapping;
public class TestModule {
public static void
contributeComponentClassResolver(Configuration<LibraryMapping>
configuration){
configuration.add(new
LibraryMapping("test",
"com.test"));
}
}
Here is the manifest:
Manifest-Version: 1.0
Tapestry-Module-Classes: com.test.TestModule
The testlib.jar is packaged like so:
META-INF/MANIFEST.MF
com/test/TestModule.class
com/test/components/TestComp.class
com/test/components/TestComp.html
This JAR is placed into WEB-INF/lib of a T5 application and I am
trying to display the test component like so:
<t:test.TestComp/>
The result is:
Unable to resolve component type 'test/TestComp' to a component class
name. Available component types: core/ActionLink, core/BeanEditForm,
core/Checkbox, core/ComponentMessages, core/Delegate, core/Errors,
core/Form, core/FormSupportImpl, core/Grid, core/GridCell,
core/GridColumns, core/GridPager, core/GridRows, core/If, core/Label,
core/Loop, core/Output, core/OutputRaw, core/PageLink, core/Palette,
core/PasswordField, core/Radio, core/RadioGroup, core/RenderObject,
core/Select, core/Submit, core/TextArea, core/TextField,
fckeditor/Editor, jscalendar/DatePicker.
Why Tapestry doesn't see my component I wonder?
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