Comments (7)
stempler
commented on August 24, 2024
Gradle does not support optional dependencies in its dependency management, so that information is lost.
Workaround is easy if you know the bundle where you want to make the dependency optional and the respective package names. You can configure the bundle to use optional package imports, similar to the first example here.
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ocroquette
commented on August 24, 2024
Thanks for the quick reply. I tried that, but it's not working, so I must do something wrong. Here is my script:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'org.standardout:bnd-platform:1.4.0'
}
}
repositories {
mavenCentral()
}
apply plugin: 'org.standardout.bnd-platform'
dependencies {
platform 'commons-logging:commons-logging:1.1.1'
}
platform {
bnd(group: 'commons-logging', name: 'commons-logging') {
optionalImport 'org.apache.avalon.framework.logger'
}
}
And here is the generated manifest:
Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Build-Jdk: 1.4.2_16
Built-By: dlg01
Bundle-ManifestVersion: 2
Bundle-Name: commons-logging.commons-logging
Bundle-SymbolicName: commons-logging
Bundle-Version: 1.1.1.bnd-u8sQ6Q
Export-Package: org.apache.commons.logging;version="1.1.1",org.apache.co
mmons.logging.impl;version="1.1.1";uses:="javax.servlet,org.apache.aval
on.framework.logger,org.apache.commons.logging,org.apache.log,org.apach
e.log4j"
Extension-Name: org.apache.commons.logging
Implementation-Title: Jakarta Commons Logging
Implementation-Vendor: Apache Software Foundation
Implementation-Vendor-Id: org.apache
Implementation-Version: 1.1.1
Import-Package: javax.servlet,org.apache.avalon.framework.logger,org.apache.log,org.apache.log4j
Originally-Created-By: Apache Maven
Specification-Title: Jakarta Commons Logging
Specification-Vendor: Apache Software Foundation
Specification-Version: 1.0
X-Compile-Source-JDK: 1.2
X-Compile-Target-JDK: 1.2
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stempler
commented on August 24, 2024
Strange, the configuration looks alright. Does it make a difference if you use org.apache.avalon.framework.logger.* or org.apache.avalon.framework.* for the optional import instruction?
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ocroquette
commented on August 24, 2024
Hmmm, no, it doesn't.
I also tried this as a cross check:
optionalImport 'javax.servlet'
It doesn't have any effect either.
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stempler
commented on August 24, 2024
Just copied your build.gradle and let it run locally, this is the Manifest I get:
Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Build-Jdk: 1.4.2_16
Built-By: dlg01
Bundle-ManifestVersion: 2
Bundle-Name: commons-logging.commons-logging
Bundle-SymbolicName: commons-logging
Bundle-Version: 1.1.1.bnd-5zkmsg
Export-Package: org.apache.commons.logging;version="1.1.1",org.apache.co
mmons.logging.impl;version="1.1.1";uses:="javax.servlet,org.apache.aval
on.framework.logger,org.apache.commons.logging,org.apache.log,org.apach
e.log4j"
Extension-Name: org.apache.commons.logging
Implementation-Title: Jakarta Commons Logging
Implementation-Vendor: Apache Software Foundation
Implementation-Vendor-Id: org.apache
Implementation-Version: 1.1.1
Import-Package: org.apache.avalon.framework.logger;resolution:=optional,
javax.servlet,org.apache.log,org.apache.log4j
Originally-Created-By: Apache Maven
Specification-Title: Jakarta Commons Logging
Specification-Vendor: Apache Software Foundation
Specification-Version: 1.0
X-Compile-Source-JDK: 1.2
X-Compile-Target-JDK: 1.2
So everything seems to work fine. Maybe an issue with the Gradle version? I just used Gradle 2.4, after that I tried it with Gradle 3.1, with the same result.
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stempler
commented on August 24, 2024
Strange though that the hash is different than yours - this would hint at a different configuration. Did you maybe look into an old Jar?
Maybe also run the clean task, e.g. gradle clean updateSite
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ocroquette
commented on August 24, 2024
I deleted ~/.groovy, ~/.gradle, killed all daemons etc., and now it works as expected, both with Gradle 2.9 that I used in the first place, and 3.1. So I guess something was wrong with my environment. Strangely enough, I had the same symptoms on my Mac and on a Windows PC. I fixed it on my Mac, I will check on Windows on monday.
During the many trials and errors, I also had an error message during the Eclipse download like the one in this bug report:
michel-kraemer/gradle-download-task#47
It's gone now. It was also probably due to environment/caches, maybe it's related to the original issue I had.
Feel free to close the issue. Thanks again for your help.
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