用Maven开发OSGi应用程序时应该首先使用POM还是首先使用MANIFEST? [英] Should I use POM first or MANIFEST first when developing OSGi application with Maven?

问题描述

使用Maven开发OSGi应用程序时，主要有两种方法:POM优先和MANIFEST优先.

There are two main approaches when developing an OSGi application with Maven: POM-first and MANIFEST first.

我正在寻找一种表格形式的答案，以显示每种方法的优缺点.

I'm looking for an answer that is in a form of a table that shows pros and cons of each method.

更具体地说，我还想知道它与以下内容之间的关系:

To be more specific, I would also like to know how it relates to:

• 工具集的成熟度
• 供应商独立性
• 易于开发(包括找到可以使用该工具进行开发的人员)
• 兼容性
• 避免ClassNotFound
• 避免体力劳动

推荐答案

目前这是我能想到的

POM-First Pro(使用maven-bundle-plugin)

• 利用现有的Maven技能，存储库和工具.
• 很容易找到知道如何管理pom.xml的人，而不是将MANIFEST.MF与pom.xml一起管理
• MANIFEST.MF中的大多数信息都可以从pom.xml本身获得.
• 不仅可以使用基于Eclipse的IDE，还可以与其他IDE一起使用.
• 侵入性较小，只需添加单个插件并将包装类型更改为捆绑"

• Leverages existing Maven skills, repositories and tooling.
• Likely easier to find people who know how to manage pom.xml rather than MANIFEST.MF along with pom.xml
• Most of the information in MANIFEST.MF can be obtained from the pom.xml itself.
• Can work with other IDEs not just Eclipse based ones.
• Less invasive, just add the single plugin and change the packaging type to "bundle"

POM优先考虑

• ClassNotFoundException更可能在运行时发生.但是，可以使用pax考试来缓解这种情况(尽管设置起来非常复杂).
• 仍然需要了解如何设置清单以确保正确设置instructions配置元素.

• ClassNotFoundException more likely to occur at runtime. However, this can be mitigated using pax-exam (although it is very complicated to set up).
• Still need to understand how the MANIFEST is setup to make sure the instructions configuration element is set correctly.

清单优先的专业人士(使用tycho-maven-plugin)

• 似乎是推荐的方法，或者至少是被推荐的方法，但是我真的看不出为什么它有很大的好处. (因此为什么会问这个问题).
• 非常适合开发Eclipse插件，并且可以与PDE很好地集成
• 提供用于测试的工具，从而允许ClassNotFoundException在JUnit测试期间而不是在运行时出现.

• Seems to be the recommended approach, or at least talked about as the recommended approach, but I can't really see why it has significant benefit. (Hence why this question was asked).
• Good for developing Eclipse plugins and integrates well with PDE
• Provides tooling for testing thus allowing ClassNotFoundException to appear during JUnit testing rather than runtime.

清单优先的缺点

• 似乎只能在基于Eclipse的IDE上很好地工作.您不必使用Eclipse，但是如果没有PDE，您会想要吗?
• 违反DRY原则，因为我必须保持POM和MANIFEST.MF中的名称和版本保持同步.
• 需要以特定的方式命名事物
• 您不能混合使用，这意味着现有的Maven多项目安装不能仅仅依靠OSGi支持
• 与maven-bundle-plugin相比，需要进行更多配置才能减少警告: http: //wiki.eclipse.org/Tycho/Reference_Card#Examplary_parent_POM
• 必须使测试用例成为一个单独的项目.内置src/test/java后，它将无法运行.
• 似乎它只会测试公开的类，换句话说就是".internal"中的类.无法测试.

• Seems to only work well on Eclipse based IDEs. You don't have to use Eclipse, but without the PDE would you want to?
• Violates DRY principles since I have to do put keep the names and versions from the POM and MANIFEST.MF in sync.
• Need to name things in a specific fashion
• You cannot mix, meaning existing Maven multi-project installations cannot just tack on OSGi support
• A lot more configuration compared to maven-bundle-plugin is needed to get less warnings: http://wiki.eclipse.org/Tycho/Reference_Card#Examplary_parent_POM
• Have to make test cases a separate project. It won't run when built in src/test/java.
• Seems that it will only test classes that are exposed, in other words those in ".internal." is not testable.

如果有人要求我为已经在使用Maven并想要迁移到OSGi的企业提供建议，那么将是 POM首先

If I were asked for a recommendation for an enterprise that is using Maven already and want to move to OSGi then it would be POM first

如果有人要求我为正在进行Eclipse插件开发的人提供建议，那么它是首先实现-与tycho

If I were asked for a recommendation for someone who is doing Eclipse plugin development, then it is Manifest first -- with tycho

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