Re: Java-Bean: True

Tue, 06 Jun 2006 05:01:05 -0700 

Steven,

I too am sorry for the latency in replying... I nearly lost the response.
The mail archives at http://mail-archives.apache.org don't have a search 
function, so they're practically useless.
The search tool at http://www.mail-archives.com yielded nothing for Java-Bean 
so I assume it's got a huge latency.
Anyway, grepping through my own email digest archives I stumbled on your answer 
just today.

The suggestion to move the template manifest file into a META-INF directory 
worked.
I'll take the other manifest problems under advisement... I'm still creating my 
project POMs.

Thanks.

Derrick




Subject:
Re: Java-Bean: True
From:
Steven Coco <[EMAIL PROTECTED]>
Date:
Thu, 01 Jun 2006 08:33:43 -0400
To:
[email protected]


Hello.  Sorry for the long latency on this one!

It's possible that your only problem is in specifying:

<manifestFile>src/main/resources/META-INF/MANIFEST.MF</manifestFile>

Instead of:

<manifestFile>src/main/resources/MANIFEST.MF</manifestFile>

(Include the META-INF directory).
I general, I don't have a problem defining a manifest, and merging it with what Maven generates. I'll include a POM below that I just tested using Maven 2.0.4 to be sure: I created the basic Maven archetype using archetype:create and modified the POM as you see it; and I created the manifest shown below; and Maven packages that jar as I would expect.
HOWEVER, while we're on this topic, I just feel I should note that the jar and war plugins do have a different defect that might also pose an issue for you. See issues MJAR-38 <http://jira.codehaus.org/browse/MJAR-38>, and MWAR-34 <http://jira.codehaus.org/browse/MWAR-34>; and also MJAR-39 <http://jira.codehaus.org/browse/MJAR-39> that might affect your Jars. In summary, Maven arbitrarily adds an extension definition to every Jar it makes -- and horribly, every War too -- so your project is not just going to be a Bean, but an Optional Package also! I know of no cure for this; however, it does appear that someone else has posted a patch; but I haven't had a chance to look into it. I have dropped the sources and attempted to make a patch, but chasing all the dependencies and getting a workable source set and classpath on my machine has thus far eluded me; and nothing is well-documented! This is a bit fraught to say the least -- notice that the combination of an Extension-Name attribute and a Main-Class attribute means that the Main-Class is defined to be the Optional Package's installer program. So this is essentially crazy.
Maven is also not generating the Created-By attribute according to the intention defined in the Jar specification. Manifest handling is very problematic. 

Here's that sample POM and manifest, and good luck.
- Steven Coco.


src/main/resources/META-INF/MANIFEST.MF:

Manifest-Version: 1.0

Name: com/foo/App.class
Java-Bean: True


pom.xml:

<project
       xmlns="http://maven.apache.org/POM/4.0.0";
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
       xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
               http://maven.apache.org/maven-v4_0_0.xsd";>

<modelVersion>4.0.0</modelVersion>

<groupId>com.foo</groupId>
<artifactId>jar-test</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>

<dependencies>
   <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
       <version>3.8.1</version>
       <scope>test</scope>
   </dependency>
</dependencies>

<build>
   <plugins>
       <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-jar-plugin</artifactId>
           <configuration>
               <archive>
<manifestFile>src/main/resources/META-INF/MANIFEST.MF</manifestFile> 
                   <index>true</index>
                   <manifest>
                       <mainClass>com/foo/App</mainClass>
                   </manifest>
               </archive>
           </configuration>
       </plugin>
   </plugins>
</build>
</project>



-- Original Message:

Derrick Oswald wrote:


Hi,

Using maven 2, how can you tag some classes in a jar as java beans?
The MANIFEST.MF file I want is (in part):

Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Created-By: Apache Maven
...<snip>
Class-Path: htmllexer.jar sax-2.0.1.jar

Name: org/htmlparser/Parser.class
Java-Bean: True

etc.

As usual, the documentation lies and says setting
  <manifestFile>src/main/resources/MANIFEST.MF</manifestFile>
is an option; but that doesn't work.
I've tried guessing the usual things in the maven-jar-plugin manifest and manifestEntries sections of the POM, but can only get an error message like: [INFO] Failed to configure plugin parameters for: org.apache.maven.plugins:maven-jar-plugin:2.0 Cause: Cannot find setter nor field in org.apache.maven.archiver.ManifestConfigu 
 ration for 'name'
or [INFO] Error assembling JAR Embedded error: Specify the section name using the "name" attribute of the <section> element rather than using a "Name" manifest attribute Any help would be appreciated. 

Derrick




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