mvn io.takari.polyglot:polyglot-translate-plugin:translate -Dinput=pom.xml -Doutput=pom.{format}
Fed up of pom xml files when you use Maven? Here is the solution : Maven Polyglot. Maven Polyglot is out there since over 5 years now and can be used to write pom file in other languages such as :
Atom
Groovy
Clojure
Ruby
Scala
YAML
To give it a try with an existing project, we have to use the following command line in the project :
mvn io.takari.polyglot:polyglot-translate-plugin:translate -Dinput=pom.xml -Doutput=pom.{format}
Where {format} is the file extension of the target format. In my case I tried with YAML format so I replaced {format} with yml.
This the pom.xml I tried out :
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>fr.ablx.yml</groupId>
<artifactId>backend</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<!-- Project Properties -->
<dataBaseSchema>DATABASE</dataBaseSchema>
<!-- Build properties -->
<java.version>1.8</java.version>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.boot.version>1.4.2.RELEASE</spring.boot.version>
<spring.loaded.version>1.2.6.RELEASE</spring.loaded.version>
<lombok.version>1.16.10</lombok.version>
<jsonpath.version>2.2.0</jsonpath.version>
<!-- Report properties -->
<maven.site.version>3.4</maven.site.version>
<asciidoctor.version>1.5.3</asciidoctor.version>
<debug>true</debug>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>${spring.boot.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>${spring.boot.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>${spring.boot.version}</version>
</dependency>
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<version>2.2.0</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok-maven -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hsqldb/hsqldb -->
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<version>2.3.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.0</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.5</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<filtering>true</filtering>
<directory>${project.build.sourceDirectory}\..\resources</directory>
</resource>
</resources>
<testResources>
<testResource>
<filtering>true</filtering>
<directory>${project.build.testSourceDirectory}\..\resources</directory>
</testResource>
</testResources>
<finalName>mysample-web</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring.boot.version}</version>
<!-- <configuration> <fork>true</fork> <jvmArguments> -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005
</jvmArguments> </configuration> -->
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
<version>${spring.loaded.version}</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>${maven.site.version}</version>
<dependencies>
<dependency>
<groupId>org.asciidoctor</groupId>
<artifactId>asciidoctor-maven-plugin</artifactId>
<version>1.5.3</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-snapshots</id>
<url>http://repo.spring.io/libs-snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>central</id>
<url>https://repo1.maven.org/maven2</url>
<releases>
<enabled>true</enabled>
</releases>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<url>http://repo.spring.io/libs-snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>central</id>
<url>https://repo1.maven.org/maven2</url>
<releases>
<enabled>true</enabled>
</releases>
</pluginRepository>
</pluginRepositories>
</project>This is the pom.yml file I obtained ;
modelVersion: 4.0.0
groupId: fr.ablx.yml
artifactId: backend
version: 0.0.1-SNAPSHOT
packaging: jar
properties: {debug: true, asciidoctor.version: 1.5.3, lombok.version: 1.16.10, dataBaseSchema: DATABASE,
maven.site.version: 3.4, java.version: 1.8, maven.compiler.target: '${java.version}',
spring.loaded.version: 1.2.6.RELEASE, project.build.sourceEncoding: UTF-8, jsonpath.version: 2.2.0,
spring.boot.version: 1.4.2.RELEASE, maven.compiler.source: '${java.version}'}
dependencies:
- {artifactId: spring-boot-starter-web, groupId: org.springframework.boot, version: '${spring.boot.version}'}
- {artifactId: spring-boot-starter-test, groupId: org.springframework.boot, scope: test,
version: '${spring.boot.version}'}
- {artifactId: spring-boot-starter-data-jpa, groupId: org.springframework.boot, version: '${spring.boot.version}'}
- {artifactId: json-path, groupId: com.jayway.jsonpath, scope: test, version: 2.2.0}
- {artifactId: lombok, groupId: org.projectlombok, version: '${lombok.version}'}
- {artifactId: hsqldb, groupId: org.hsqldb, version: 2.3.4}
- {artifactId: commons-dbcp, groupId: commons-dbcp, version: 1.4}
- {artifactId: gson, groupId: com.google.code.gson, scope: test, version: 2.8.0}
- {artifactId: commons-lang3, groupId: org.apache.commons, version: 3.5}
build:
finalName: mysample-web
plugins:
- groupId: org.springframework.boot
artifactId: spring-boot-maven-plugin
version: ${spring.boot.version}
dependencies:
- {artifactId: springloaded, groupId: org.springframework, version: '${spring.loaded.version}'}
- groupId: org.apache.maven.plugins
artifactId: maven-site-plugin
version: ${maven.site.version}
dependencies:
- {artifactId: asciidoctor-maven-plugin, groupId: org.asciidoctor, version: 1.5.3}
resources:
- {directory: '${project.build.sourceDirectory}\..\resources', filtering: true}
testResources:
- {directory: '${project.build.testSourceDirectory}\..\resources', filtering: true}
pluginRepositories:
- id: spring-snapshots
layout: default
snapshots: {enabled: true}
url: http://repo.spring.io/libs-snapshot
- id: central
layout: default
releases: {enabled: true}
url: https://repo1.maven.org/maven2
pomFile: {}
repositories:
- id: spring-snapshots
layout: default
snapshots: {enabled: true}
url: http://repo.spring.io/libs-snapshot
- id: central
layout: default
releases: {enabled: true}
url: https://repo1.maven.org/maven2We can see the pom.xml has been shrinked to a pom.yml with 56 line. A win of 100 lines. So big pom files become more readable. After the creation of the pom.yml, I had to add the following extensions.xml in my project :
<?xml version="1.0" encoding="UTF-8"?>
<extensions>
<extension>
<groupId>io.takari.polyglot</groupId>
<artifactId>polyglot-yaml</artifactId>
<version>0.1.19</version>
</extension>
</extensions>Yes we can’t remove XML completely but this file is rather simple and may be one day we will be able to completely get rid of it. The extensions.xml has to be placed in the project folder in the folder .mvn.
The pom.yml file went fine except for the line pomFile:{}. This line broke my build but when I removed it everything went back to normal.
Now I am able to use my mvn command as before.
[INFO] [INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ backend --- [INFO] Building jar: /home/thor/projets/sources/java/backendyml/target/mysample-web.jar [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 7.960 s [INFO] Finished at: 2017-04-02T16:56:33-04:00 [INFO] Final Memory: 20M/403M [INFO] ------------------------------------------------------------------------