[MDEP-290] purge-local-repository fails when the dependency was never download yet and copying is declared

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Incomplete
• Affects Version/s: 2.1
• Component/s: purge-local-repository
• Assignee: Unassigned
• Reporter: Dieter König
• Created: 18/Oct/10 04:15
• Updated: 15/Apr/17 23:20
• Resolved: 15/Apr/17 23:20

Description

Using goal "purge-local-repository" together with "copy-dependencies" leads to failure of build with "dependency is missing" if one of the declared snapshot-dependencies was never downloaded before.

Example, pom.xml:

<dependencies>
	<dependency>
		<groupId>some.groupid</groupId>
		<artifactId>some.artifactid</artifactId>
		<version>1.0-SNAPSHOT</version>
	</dependency>
</dependencies>
<build>
	<plugins>
	  <plugin>
		<groupId>org.apache.maven.plugins</groupId>
		<artifactId>maven-dependency-plugin</artifactId>
		<version>2.1</version>
		<executions>
			<execution>
				<id>clean-local-repository</id>
				<phase>prepare-package</phase>
				<goals>
					<goal>purge-local-repository</goal>
				</goals>
				<configuration>
					<reResolve>false</reResolve>
					<verbose>true</verbose>
				</configuration>
			</execution>
			<execution>
				<id>copy-artifact</id>
				<phase>package</phase>
				<goals>
					<goal>copy-dependencies</goal>
				</goals>
				<configuration>
					<includeArtifactIds>some.artifactid</includeArtifactIds>
				</configuration>
			</execution>
		</executions>
	  </plugin>
	</plugins>
</build>

In the local maven repository the folder "some.artifactid" should be missing (just delete it manually if you are testing with something which you already have there). Now try to build the project with the given pom. It will fail with the message that dependency is missing.

If you comment out the execution of purge-local-repository the build will run successfully (maven downloads the declared dependency).
Otherwise if you comment out the execution of copy-dependencies the build will also run successfully.

But if you have both executions together declared it will fail as long as the declared dependency is not in the local repository...