Migrate existing Maven Project into an OSGI Bundle

Posted by user1706291 on Stack Overflow See other posts from Stack Overflow or by user1706291
Published on 2012-10-05T09:36:00Z Indexed on 2012/10/05 9:37 UTC
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i am new to the whole OSGi stuff and my task is to create an OSGi Bundle out from an exisitng maven project.

To get started i decided to pick the smallest part and starting with it:

Here is the 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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
    <artifactId>cross</artifactId>
    <groupId>net.sf.maltcms</groupId>
    <version>1.2.12-SNAPSHOT</version>
</parent>
<artifactId>cross-main</artifactId>
<packaging>jar</packaging>
<name>cross-main</name>
<dependencies>
    <dependency>
        <groupId>${project.groupId}</groupId>
        <artifactId>cross-annotations</artifactId>
        <version>${project.version}</version>
    </dependency>
    <dependency>
        <groupId>${project.groupId}</groupId>
        <artifactId>cross-event</artifactId>
        <version>${project.version}</version>
    </dependency>
    <dependency>
        <groupId>${project.groupId}</groupId>
        <artifactId>cross-tools</artifactId>
        <version>${project.version}</version>
    </dependency>
    <dependency>
        <groupId>${project.groupId}</groupId>
        <artifactId>cross-exception</artifactId>
        <version>${project.version}</version>
    </dependency>
    <dependency>
        <groupId>commons-codec</groupId>
        <artifactId>commons-codec</artifactId>
        <version>1.4</version>
    </dependency>
    <dependency>
        <groupId>${project.groupId}</groupId>
        <artifactId>cross-main-api</artifactId>
        <version>${project.version}</version>
        <exclusions>
            <exclusion>
                <artifactId>commons-logging</artifactId>
                <groupId>commons-logging</groupId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aop</artifactId>
        <version>3.0.6.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-asm</artifactId>
        <version>3.0.6.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>3.0.6.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>3.0.6.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>3.0.6.RELEASE</version>
        <exclusions>
            <exclusion>
                <artifactId>commons-logging</artifactId>
                <groupId>commons-logging</groupId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-expression</artifactId>
        <version>3.0.6.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.1</version>
    </dependency>
    <dependency>
        <groupId>net.sf.ehcache</groupId>
        <artifactId>ehcache-core</artifactId>
        <version>2.4.6</version>
    </dependency>
    <dependency>
        <groupId>${project.groupId}</groupId>
        <artifactId>cross-math</artifactId>
        <version>${project.version}</version>
    </dependency>
    <dependency>
        <groupId>com.db4o</groupId>
        <artifactId>db4o-all</artifactId>
        <version>8.0.249</version>
    </dependency>
    <dependency>
        <groupId>net.sf.mpaxs</groupId>
        <artifactId>mpaxs-spi</artifactId>
        <version>1.6.10</version>
    </dependency>
    <dependency>
        <groupId>net.sf.mpaxs</groupId>
        <artifactId>mpaxs-server</artifactId>
        <version>1.6.10</version>
    </dependency>
</dependencies>

I did some research and found the Apache Bundle Plugin for maven and changed the pom to this

<packaging>bundle</packaging>

and added

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.felix</groupId>
            <artifactId>maven-bundle-plugin</artifactId>
            <extensions>true</extensions>
            <configuration>
                <instructions>          
                    <Bundle-SymbolicName>${pom.artifactId}</Bundle-SymbolicName>
                </instructions>
            </configuration>
        </plugin>
    </plugins>
</build>

mvn clean install went fine and i got a jar file containing the manifest, but of course the bundle could not be resolved

 BundleException: The bundle "cross-main_1.2.12.SNAPSHOT [30]" could not be resolved. Reason: Missing Constraint: Import-Package: com.db4o; version="[8.0.0,9.0.0)

To make a long story short: What are the possibiliteis to migrate a maven application into an OSGi Bundle?

Espacially how to manage the dependencys

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