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BAEL-3347: example of version collision in Maven (#9644) 

* BAEL-3347: example of version collision in Maven

* BAEL-3347: created multi-module example of version collision in Maven

* BAEL-3347: fixed placement of the dependencyManagement section, added maven-enforcer-plugin
This commit is contained in:
Maciej Główka 2020-07-10 09:26:23 +02:00 committed by GitHub
parent a934b4099b
commit 5839d7dbf4
8 changed files with 210 additions and 0 deletions
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54
maven-all/version-collision/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>maven-all</artifactId>
<groupId>com.baeldung</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>version-collision</artifactId>
<packaging>pom</packaging>
<modules>
<module>project-a</module>
<module>project-b</module>
<module>project-collision</module>
</modules>
<!--comment section below to provoke version collision in project-collision module-->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>29.0-jre</version>
</dependency>
</dependencies>
</dependencyManagement>
<!-- uncomment section below to ban the use of transitive dependencies -->
<!-- <build>-->
<!-- <plugins>-->
<!-- <plugin>-->
<!-- <groupId>org.apache.maven.plugins</groupId>-->
<!-- <artifactId>maven-enforcer-plugin</artifactId>-->
<!-- <version>3.0.0-M3</version>-->
<!-- <executions>-->
<!-- <execution>-->
<!-- <id>enforce-banned-dependencies</id>-->
<!-- <goals>-->
<!-- <goal>enforce</goal>-->
<!-- </goals>-->
<!-- <configuration>-->
<!-- <rules>-->
<!-- <banTransitiveDependencies/>-->
<!-- </rules>-->
<!-- </configuration>-->
<!-- </execution>-->
<!-- </executions>-->
<!-- </plugin>-->
<!-- </plugins>-->
<!-- </build>-->
</project>

21
maven-all/version-collision/project-a/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>version-collision</artifactId>
<groupId>com.baeldung</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>project-a</artifactId>
<dependencies>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>22.0</version>
</dependency>
</dependencies>
</project>

21
maven-all/version-collision/project-b/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>version-collision</artifactId>
<groupId>com.baeldung</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>project-b</artifactId>
<dependencies>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>29.0-jre</version>
</dependency>
</dependencies>
</project>

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maven-all/version-collision/project-collision/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>version-collision</artifactId>
<groupId>com.baeldung</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>project-collision</artifactId>
<dependencies>
<dependency>
<groupId>com.baeldung</groupId>
<artifactId>project-a</artifactId>
<version>0.0.1-SNAPSHOT</version>
<!-- uncomment to exclude guava transitive artifact from module -->
<!-- <exclusions>-->
<!-- <exclusion>-->
<!-- <groupId>com.google.guava</groupId>-->
<!-- <artifactId>guava</artifactId>-->
<!-- </exclusion>-->
<!-- </exclusions>-->
</dependency>
<dependency>
<groupId>com.baeldung</groupId>
<artifactId>project-b</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
</project>

14
maven-all/version-collision/project-collision/src/test/java/com/baeldung/version/collision/VersionCollisionUnitTest.java Normal file
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package com.baeldung.version.collision;
import com.google.common.util.concurrent.Futures;
import org.junit.Test;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.junit.Assert.assertThat;
public class VersionCollisionUnitTest {
@Test
public void whenVersionCollisionDoesNotExist_thenShouldCompile() {
assertThat(Futures.immediateVoidFuture(), notNullValue());
}
}

1
maven-modules/pom.xml
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<module>maven-war-plugin</module> <module>maven-war-plugin</module>
<module>maven-profiles</module> <module>maven-profiles</module>
<module>versions-maven-plugin</module> <module>versions-maven-plugin</module>
<module>version-collision</module>
</modules> </modules>
</project> </project>

21
maven-modules/version-collision/child-module/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>version-collision</artifactId>
<groupId>com.baeldung</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>child-module</artifactId>
<dependencies>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-core</artifactId>
<version>3.3.9</version>
</dependency>
</dependencies>
</project>

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maven-modules/version-collision/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>maven-all</artifactId>
<groupId>com.baeldung</groupId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>version-collision</artifactId>
<packaging>pom</packaging>
<modules>
<module>child-module</module>
</modules>
<dependencies>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-configuration2</artifactId>
<version>2.7</version>
<!--uncomment section below to exclude commons-lang3 artifact to prevent version collision-->
<!-- <exclusions>-->
<!-- <exclusion>-->
<!-- <groupId>org.apache.commons</groupId>-->
<!-- <artifactId>commons-lang3</artifactId>-->
<!-- </exclusion>-->
<!-- </exclusions>-->
</dependency>
</dependencies>
<!--uncomment section below to use dependencyManagement to prevent version collision-->
<!-- <dependencyManagement>-->
<!-- <dependencies>-->
<!-- <dependency>-->
<!-- <groupId>org.apache.commons</groupId>-->
<!-- <artifactId>commons-lang3</artifactId>-->
<!-- <version>3.4</version>-->
<!-- </dependency>-->
<!-- </dependencies>-->
<!-- </dependencyManagement>-->
</project>