BAEL-5083: add Maven parent POM resolution samples (#11182)
Co-authored-by: Ralf Ueberfuhr <ralf.ueberfuhr@ars.de>
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Ralf Ueberfuhr
GitHub
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### Relevant Articles:
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- [Understanding the "relativePath" Tag - Maven Parent POM Resolution At A Glance](https://www.baeldung.com/maven-relativepath)
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.baeldung</groupId>
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<artifactId>maven-parent-pom-resolution</artifactId>
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<version>1.0-SNAPSHOT</version>
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<packaging>pom</packaging>
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<modules>
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<module>project-a</module>
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</modules>
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<!-- to detect the POM hierarchy, just type "mvn dependency:display-ancestors" -->
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<build>
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<pluginManagement>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-dependency-plugin</artifactId>
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<version>3.2.0</version>
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</plugin>
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</plugins>
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</pluginManagement>
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</build>
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</project>
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<artifactId>project-a</artifactId>
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<parent>
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<groupId>com.baeldung</groupId>
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<artifactId>maven-parent-pom-resolution</artifactId>
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<version>1.0-SNAPSHOT</version>
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<!-- The parent pom is resolved to ../pom.xml -->
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</parent>
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<packaging>pom</packaging>
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<modules>
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<module>project-b</module>
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<module>project-c</module>
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</modules>
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</project>
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<artifactId>project-b</artifactId>
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<parent>
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<groupId>com.baeldung</groupId>
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<artifactId>project-a</artifactId>
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<version>1.0-SNAPSHOT</version>
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<!-- The parent pom is resolved to project a's pom.xml -->
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</parent>
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<packaging>pom</packaging>
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</project>
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<artifactId>project-c</artifactId>
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<parent>
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<groupId>com.baeldung</groupId>
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<artifactId>project-b</artifactId>
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<version>1.0-SNAPSHOT</version>
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<relativePath>../project-b/pom.xml</relativePath>
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<!-- The parent pom is resolved to project a's pom.xml -->
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</parent>
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<packaging>pom</packaging>
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<modules>
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<module>project-d</module>
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</modules>
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</project>
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<artifactId>project-d</artifactId>
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<parent>
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<groupId>com.baeldung</groupId>
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<artifactId>project-a</artifactId>
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<version>1.0-SNAPSHOT</version>
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<!-- removing relativePath won't work even if project-a is the aggregator project -->
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<!-- it only works in IntelliJ IDEA when project-a is registered as a Maven Project -->
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<relativePath>../../pom.xml</relativePath>
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</parent>
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<packaging>pom</packaging>
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</project>
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@ -36,6 +36,7 @@
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<module>host-maven-repo-example</module>
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<module>host-maven-repo-example</module>
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<module>plugin-management</module>
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<module>plugin-management</module>
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<module>maven-surefire-plugin</module>
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<module>maven-surefire-plugin</module>
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<module>maven-parent-pom-resolution</module>
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</modules>
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</modules>
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</project>
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</project>
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