maven assembly plugin dependencySet with transitive dependencies

Question

I don't understand how to add part of dependencies to <dependencySet> in assembly

for example I have dependency on group:artifact1 and group:artifact2 that both depend on group:artifact0.

I create assembly descriptor that should copy group:artifact2 with all dependencies.

If dependency on group:artifact1 in pom.xml appears before dependency on group:artifact2, I have only group:artifact2 in target dir, but if I change order of dependencies, than I have both artifacts in target dir.

In result I want to have two directories with different set of libraries.

Simple example here

pom.xml

<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>com.kudrevatykh.stackoverflow</groupId>                                                                                                                                                        
    <artifactId>assembly-question</artifactId>                                                                                                                                                              
    <version>0.0.1-SNAPSHOT</version>                                                                                                                                                                       
    <properties>                                                                                                                                                                                            
        <spring.version>3.2.3.RELEASE</spring.version>                                                                                                                                                      
    </properties>                                                                                                                                                                                           
    <dependencies>                                                                                                                                                                                          
        <dependency>                                                                                                                                                                                        
            <groupId>org.springframework</groupId>                                                                                                                                                          
            <artifactId>spring-aop</artifactId>                                                                                                                                                             
            <version>${spring.version}</version>                                                                                                                                                            
        </dependency>                                                                                                                                                                                       
        <dependency>                                                                                                                                                                                        
            <groupId>org.springframework</groupId>                                                                                                                                                          
            <artifactId>spring-jdbc</artifactId>                                                                                                                                                            
            <version>${spring.version}</version>                                                                                                                                                            
        </dependency>                                                                                                                                                                                       
    </dependencies>                                                                                                                                                                                         
    <build>                                                                                                                                                                                                 
        <plugins>                                                                                                                                                                                           
            <plugin>                                                                                                                                                                                        
                <artifactId>maven-assembly-plugin</artifactId>                                                                                                                                              
                <version>2.4</version>                                                                                                                                                                      
                <executions>                                                                                                                                                                                
                    <execution>                                                                                                                                                                             
                        <id>install</id>                                                                                                                                                                    
                        <phase>package</phase>                                                                                                                                                              
                        <goals>                                                                                                                                                                             
                            <goal>single</goal>                                                                                                                                                             
                        </goals>                                                                                                                                                                            
                        <configuration>                                                                                                                                                                     
                            <descriptor>install.xml</descriptor>                                                                                                                                            
                        </configuration>                                                                                                                                                                    
                    </execution>                                                                                                                                                                            
                </executions>                                                                                                                                                                               
            </plugin>                                                                                                                                                                                       
        </plugins>                                                                                                                                                                                          
    </build>                                                                                                                                                                                                
</project>                                                                                                                                                                                                  

install.xml

<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
    <id>install</id>                                                                                                                         
    <includeBaseDirectory>false</includeBaseDirectory>                                                                                       
    <formats>                                                                                                                                
        <format>dir</format>                                                                                                                 
    </formats>                                                                                                                               
    <dependencySets>                                                                                                                         
        <dependencySet>                                                                                                                      
            <useProjectArtifact>false</useProjectArtifact>                                                                                   
            <includes>                                                                                                                       
                <include>org.springframework:spring-jdbc:jar</include>                                                                       
            </includes>                                                                                                                      
            <useTransitiveFiltering>true</useTransitiveFiltering>                                                                            
            <outputDirectory>/</outputDirectory>                                                                                             
        </dependencySet>                                                                                                                     
    </dependencySets>                                                                                                                        
</assembly>                                                                                                                                  

mvn --version output

Apache Maven 3.0.4 (r1232337; 2012-01-17 12:44:56+0400)
Maven home: C:\Users\akudrevatykh\bin\apache-maven-3.0.4
Java version: 1.7.0_11, vendor: Oracle Corporation
Java home: C:\Users\akudrevatykh\bin\jdk1.7.0_11\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "x86", family: "windows"

Answer 1

You should define the dependencies you like to have in your assembly in the pom file as dependencies. This will make sure the order of building is automatically determined by Maven and will be the same all the time. Furthermore you just need to give the following descriptor like this which will package all the dependencies into a zip file:

<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">

  <id>dist-assembly</id>

  <formats>
      <format>zip</format>
  </formats>

  <includeBaseDirectory>false</includeBaseDirectory>

  <dependencySets>
      <dependencySet>
          <outputDirectory>/</outputDirectory>
          <useProjectArtifact>false</useProjectArtifact>
          <unpack>false</unpack>
          <scope>runtime</scope>
      </dependencySet>
  </dependencySets>
</assembly>

Let the transivite dependencies go into different location:

<dependencySets>
  <dependencySet>
      <useProjectArtifact>false</useProjectArtifact>
      <useTransitiveDependencies>true</useTransitiveDependencies>
      <outputDirectory>lib</outputDirectory>
      <unpack>false</unpack>
      <excludes>
        <exclude>${project.groupId}:*</exclude>
      </excludes>
  </dependencySet>
</dependencySets>

The ${project.groupId} excludes the project artifacts. You can repeat this part as often you need them to be copied.