How do I skip a Maven plugin execution if "-DskipTests" or "-Dmaven.test.skip=true" is specified?

Question

I'm using Maven 3.0.3. I have this plugin, which normally I want to run before my JUnit tests are executed:

    <profile>         <id>dev</id>         <activation>             <activeByDefault>true</activeByDefault>         </activation>         <properties>             <test.mysql.db.user>sbjunituser</test.mysql.db.user>             <test.mysql.db.password></test.mysql.db.password>             <test.mysql.db.prefix>sbjunit</test.mysql.db.prefix>             <test.mysql.db.sid>${test.mysql.db.prefix}_${project.artifactId}</test.mysql.db.sid>             <test.mysql.db.host>localhost</test.mysql.db.host>             <test.mysql.db.port>3306</test.mysql.db.port>             <test.mysql.dataSource.url>jdbc:mysql://${test.mysql.db.host}:${test.mysql.db.port}/${test.mysql.db.sid}</test.mysql.dataSource.url>             <test.mysql.dataSource.driverClassName>com.mysql.jdbc.Driver</test.mysql.dataSource.driverClassName>         </properties>         <build>             <plugins>         <!--  Run the liquibase scripts -->         <plugin>             <groupId>org.liquibase</groupId>             <artifactId>liquibase-maven-plugin</artifactId>             <version>2.0.1</version>             <dependencies>                 <dependency>                     <groupId>mysql</groupId>                     <artifactId>mysql-connector-java</artifactId>                     <version>5.1.18</version>                 </dependency>             </dependencies>             <executions>                 <execution>                     <id>build-database</id>                     <phase>process-test-classes</phase>                     <configuration>                         <driver>com.mysql.jdbc.Driver</driver>                         <url>jdbc:mysql://${test.mysql.db.host}:${test.mysql.db.port}/${test.mysql.db.sid}</url>                         <username>${test.mysql.db.user}</username>                         <password>${test.mysql.db.password}</password>                         <changeLogFile>${project.build.directory}/db.changelog-master.xml</changeLogFile>                         <promptOnNonLocalDatabase>false</promptOnNonLocalDatabase>                     </configuration>                     <goals>                         <goal>update</goal>                     </goals>                 </execution>             </executions>         </plugin> 

However, if someone specifies -Dmaven.test.skip=true or -DskipTests, I would like to skip this plugin from running. How do I do that? I tried changing the execution phase to "test", but then my unit tests get run before this plugin, which is not what I want.

Answer 1

This worked for me:

<configuration>    <skip>${skipTests}</skip> </configuration> 

OR

<configuration>    <skip>${maven.test.skip}</skip> </configuration>