exec:java causes mvn compile to look for test-jar dependencies
--------------------------------------------------------------
Key: MEXEC-91
URL: http://jira.codehaus.org/browse/MEXEC-91
Project: Maven 2.x Exec Plugin
Issue Type: Bug
Components: java
Affects Versions: 1.2
Environment: Mac OS X, maven 2 and 3
Reporter: Steven Bethard
Attachments: mvn-compile-bug.tgz
There is a bad interaction between the exec:java plugin and test-jar
dependencies in a multi-module project. In short, if you attach exec:java to an
execution phase, "mvn compile" then looks for "test-jar" dependencies even
though it should only be looking for compile time dependencies.
Here is the setup:
/pom.xml
/cleartk-token/pom.xml
/cleartk-token/src/main/java/Token.java
/cleartk-token/src/test/java/TokenTest.java
/cleartk-named-entity/pom.xml
The cleartk-token module uses the "maven-jar-plugin" to package a "test-jar"
dependency.
The cleartk-named-entity module depends on the cleartk-token "jar" dependency
at compile time and (additionally) the cleartk-token "test-jar" dependency at
test-compile time.
The cleartk-named-entity module uses exec:java to generate some code in the
process-resources phase. (It doesn't actually call any main class in the
attached file, but that doesn't seem to be necessary to provoke the bug.)
Given this setup, if you run "mvn compile" from the top level, with maven 2
you'll get the error:
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Failed to resolve artifact.
Missing:
----------
1) org.cleartk:cleartk-token:test-jar:tests:0.7.0-SNAPSHOT
And with maven 3 you'll get the error:
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
...
[ERROR] Failed to execute goal on project cleartk-named-entity: Could not
resolve dependencies for project
org.cleartk:cleartk-named-entity:jar:0.1.0-SNAPSHOT: Could not find artifact
org.cleartk:cleartk-token:jar:tests:0.7.0-SNAPSHOT
Now this seems wrong in both cases - at compile time, maven shouldn't be
looking for test jars.
I believe this is an exec:java bug (or at least exec:java revealing a compiler
plugin bug) because if I comment out the <executions> element for the
"maven-exec-plugin", then everything compiles fine.
My current workaround is to use "mvn compile package" which I guess makes the
"test-jar" dependency visible at compile time. But since the "test-jar"
dependency is a test-compile time dependency, I think this shouldn't be
necessary.
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