Parent

Child

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.searchengine</groupId>
  <artifactId>crawler</artifactId>
  <packaging>jar</packaging>
  <version>0.1-SNAPSHOT</version>
  <name>crawler</name>
  <url>http://maven.apache.org</url>
  <parent>
    <groupId>org.searchengine</groupId>
    <artifactId>searchengine</artifactId>
    <version>0.1-SNAPSHOT</version>
  </parent>
  <build>
    <plugins>
      <plugin>
        <artifactId>maven-assembly-plugin</artifactId>
        <configuration>
          <descriptorRefs>
            <descriptorRef>jar-with-dependencies</descriptorRef>
          </descriptorRefs>
          <executions>
            <execution>
              <id>make-assembly</id>
              <phase>package</phase>
              <goals>
                <goal>single</goal>
              </goals>
            </execution>
          </executions>
          <archive>
            <manifest>
              <mainClass>org.searchengine.crawler.app.Main</mainClass>
            </manifest>
          </archive>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.searchengine</groupId>
      <artifactId>database</artifactId>
      <version>0.1-SNAPSHOT</version>
    </dependency>
  </dependencies>
</project>

gistfile1.txt

<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">
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.searchengine</groupId>
  <version>0.1-SNAPSHOT</version>
  <artifactId>searchengine</artifactId>
  <packaging>pom</packaging>
  <modules>
    <module>crawler</module>
    <module>server</module>
    <module>service</module>
    <module>database</module>
    <module>commons</module>
  </modules>
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>1.6</source>
          <target>1.6</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>