Maven 2.x JAR Plugin

Regression: Build fails for an empty main jar with 2.2

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Major Major
  • Resolution: Fixed
  • Affects Version/s: 2.2
  • Fix Version/s: 2.3
  • Component/s: None
  • Labels:
    None
  • Number of attachments :
    1

Description

We have quite some projects with integration tests that have only test code, but no sources (neither Java nor other resources) that are included into the main artifact. With jar-plugin version 2.2 these kind of projects suddenly fail:

[INFO] ------------------------------------------------------------------------
[INFO] Building eIP TempAccess Integration Tests
[INFO]    task-segment: [clean, deploy]
[INFO] ------------------------------------------------------------------------
[INFO] [clean:clean]
[INFO] Deleting directory D:\work\standard\eIP\TempAccess\EnterpriseArchive\integration-test-jar\target
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:compile]
[INFO] No sources to compile
[INFO] [resources:testResources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:testCompile]
[INFO] Compiling 1 source file to D:\work\standard\eIP\TempAccess\EnterpriseArchive\integration-test-jar\target\test-classes
[INFO] [surefire:test]
[INFO] Tests are skipped.
[INFO] [jar:jar]
[WARNING] JAR will be empty - no content was marked for inclusion!
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error assembling JAR

Embedded error: You must set at least one file.
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 14 minutes 44 seconds
[INFO] Finished at: Wed Apr 16 08:18:43 CEST 2008
[INFO] Final Memory: 111M/200M
[INFO] ------------------------------------------------------------------------

With 2.1 an empty main jar has been created and this behaviour was explicitly acknowledged in MJAR-8.

We stumbled about this upgrading from M205 to M209 that allowed us to use also the newer jar-plugin version. Currently we're stuck with jar-plugin version 2.1 because of this.

Issue Links

is related to

Bug - A problem which impairs or prevents the functions of the product. MJAR-8 Maven creates jar for a project without java sources

  • Minor - Minor loss of function, or other problem where easy workaround is present.
  • Closed - The issue is considered finished, the resolution is correct. Issues which are not closed can be reopened.

Improvement - An improvement or enhancement to an existing feature or task. MJAR-20 Don't create empty jars

  • Minor - Minor loss of function, or other problem where easy workaround is present.
  • Reopened - This issue was once resolved, but the resolution was deemed incorrect. From here issues are either marked assigned or resolved.

Task - A task that needs to be done. MSHARED-135 Update to plexus-archiver-1.0-alpha-12 to allow Manifest-only jars

  • Major - Major loss of function.
  • Closed - The issue is considered finished, the resolution is correct. Issues which are not closed can be reopened.

Activity

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Dennis Lundberg added a comment -

I was unable to reproduce this using Maven 2.0.8 or 2.0.9.
Here's a sample project that works-for-me tm

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Dennis Lundberg added a comment - I was unable to reproduce this using Maven 2.0.8 or 2.0.9. Here's a sample project that works-for-me tm
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Jörg Schaible added a comment -

In your example, the resulting jar is not empty. Looking for the differences to your example and my setup I found that we use this configuration for the plugin:

		<configuration>
			<!-- Remove the Maven POM from the Manifest -->
			<archive>
				<addMavenDescriptor>false</addMavenDescriptor>
			</archive>
		</configuration>

Add this configuration to your example and the problem is also revealed

Show
Jörg Schaible added a comment - In your example, the resulting jar is not empty. Looking for the differences to your example and my setup I found that we use this configuration for the plugin: <configuration> <!-- Remove the Maven POM from the Manifest --> <archive> <addMavenDescriptor>false</addMavenDescriptor> </archive> </configuration> Add this configuration to your example and the problem is also revealed
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Dennis Lundberg added a comment -

Thanks, I can confirm that this is the case.

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Dennis Lundberg added a comment - Thanks, I can confirm that this is the case.
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Paul Gier added a comment -

Can you just set the packaging to "pom"? That will skip the compile and jar related phases. Or is the reason because you still want the test (test-compile, test-resources, etc) phases to run so that you can create the test jar?

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Paul Gier added a comment - Can you just set the packaging to "pom"? That will skip the compile and jar related phases. Or is the reason because you still want the test (test-compile, test-resources, etc) phases to run so that you can create the test jar?
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Jörg Schaible added a comment -

With package type "pom" you cannot generate Eclipse projects anymore - another no-no.
Additionally it is very annoying if you setup template projects that do not contain anything yet.

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Jörg Schaible added a comment - With package type "pom" you cannot generate Eclipse projects anymore - another no-no. Additionally it is very annoying if you setup template projects that do not contain anything yet.
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Dennis Lundberg added a comment -

Fixed in r830739.

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Dennis Lundberg added a comment - Fixed in r830739 .

People

  • Assignee:
    Dennis Lundberg
    Reporter:
    Jörg Schaible
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Dates

  • Created:
    Updated:
    Resolved: