How to setup multi-module maven project with proper release and version structure

I could not find the best practice for my multi-module maven project,in terms of versioning, release and osgi bundles,

First of all Versioning and relase. my project has 5-6 sub modules with 200+ jar so wanted to use aggregation,

Case 1: Not to specify project versions and use parent version

• in this case if i use maven release plugin both tagging and pom.next is ok for development (ok means jar3 will always use latest version of jar1 which is same with itself)but what if i need to make patch relase only for jar1 ? how can i manage to make relase (it says Can't release project due to non released dependencies parent:0.0.2-SNAPSHOT) and if i manage to release jar1 0.0.1.1 ,how to say jar3 to use patched version of jar1?

  Parent Proejct (0.0.1-Snapshot)

   Module1

    Jar1

    Jar2

   Module2

     Jar3

      (dependencies)[Jar1(project.version),Jar2(project.version)]

    Jar4

      (dependencies)[Jar1(project.version),Jar3(project.version)]

Case 2: Maybe it is good idea to specify jar versions in property file of parent pom

• in this case when use release plugin unfortunetly when i check pom.next i see that both jar version and dependency versions are reverted to hardcoded instead of property (jar1.version) so that for next release i will not be able to use properties , and second problem is even i manage to solve 1st problem maven release plugin does not change properties so next release will use unmodified vers开发者_JS百科ions from properties

  Parent Proejct

   Properties

    jar1.version

    jar2.version

    jar3.version

    jar4.version

   Module1

    Jar1(jar1.version)

    Jar2(jar2.version)

   Module2(0.0.1-Snapshot)

    Jar3(jar3.version)

     (dependencies)[Jar1,Jar2]

    Jar4(0.0.1-Snapshot)

     (dependencies)[Jar1,Jar3]

I am kind of confused, didnt thought that relase and patch procedure would be that difficult, what is the best way to manage this kind of requirements with maven

finally i managed to support release(version) management for my multi-module project with //dependencyManagement\

My parent pom

    <project>
 <modelVersion>4.0.0</modelVersion>
 <groupId>com.seyn</groupId>
 <artifactId>hophop</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 <packaging>pom</packaging>
 <name>hophop</name>

 <scm>
  <connection></connection>
  <developerConnection></developerConnection>
  <url></url>
 </scm>

 <properties>
  <hophop1.version>0.0.1-SNAPSHOT</hophop1.version>
  <hophop2.version>0.0.1-SNAPSHOT</hophop2.version>
 </properties>

 <modules>
  <module>../hophop1</module>
  <module>../hophop2</module>
 </modules>

 <build>
  <plugins>
   <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-release-plugin</artifactId>
    <version>2.1</version>
   </plugin>
  </plugins>
 </build>

 <dependencyManagement>
  <dependencies>
   <dependency>
    <groupId>com.seyn</groupId>
    <artifactId>hophop1</artifactId>
    <version>${hophop1.version}</version>
   </dependency>
  </dependencies>
 </dependencyManagement>
</project>

and my module 1 pom :

 <project>
 <modelVersion>4.0.0</modelVersion>
 <parent>
  <artifactId>hophop</artifactId>
  <groupId>com.seyn</groupId>
  <version>0.0.1-SNAPSHOT</version>
  <relativePath>..\hophop</relativePath>
 </parent>
 <groupId>com.seyn</groupId>
 <artifactId>hophop1</artifactId>
 <version>0.0.1-SNAPSHOT</version>

 <scm>
  <connection>seyn</connection>
  <developerConnection>seyn</developerConnection>
  <url>seyn</url>
 </scm>

</project>

and my module 2 pom that depends module 1:

    <project>
 <modelVersion>4.0.0</modelVersion>
 <parent>
  <artifactId>hophop</artifactId>
  <groupId>com.seyn</groupId>
  <version>0.0.1-SNAPSHOT</version>
  <relativePath>..\hophop</relativePath>
 </parent>
 <groupId>com.seyn</groupId>
 <artifactId>hophop2</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 <scm>
  <connection>seyn</connection>
  <developerConnection>seyn</developerConnection>
  <url>seyn</url>
 </scm>
 <dependencies>
  <dependency>
   <groupId>com.seyn</groupId>
   <artifactId>hophop1</artifactId>
  </dependency>
 </dependencies>
</project>