java - OSGi Felix 依赖管理器注解和抽象类

Question

在基于依赖管理器的组件模型中，我试图将组件的所有样板文件隐藏到基类中。我在 eclipse+bndtools 中连接了所有东西，并且可以成功地将 @Init、@Start、@Stop 推送到我的基类中，但是当我移动时我的“命名”@ServiceReference 已启动，编译插件开始抛出错误。

对于一些进一步的上下文，这就是我的方法的样子，正如你所看到的，我正在动态地使用 init 和 start 方法，这样我就可以摆脱尽可能多的样板文件。

@ServiceDependency(name = "commands" )
protected void setCommands(CommandList commands) {
    this.commands = commands;
}

@Init
Map init() {
    return new HashMap() {{
        put("commands.filter", Filter.property(Properties.COMMAND_LIST_ID, getCommandListId()));
        put("commands.required", "true");
    }};
}

@Start
Map start() {
    ...
    return new HashMap() {{
        put(Properties.COMMAND_LIST_LISTVIEW_ID, getCommandListViewId());
    }};
}

这是 Eclipse 打印出的堆栈跟踪:

java.lang.Error: DM Annotation plugin failure
    at org.apache.felix.dm.annotation.plugin.bnd.AnnotationPlugin.analyzeJar(AnnotationPlugin.java:130)
    at aQute.bnd.osgi.Analyzer.doPlugins(Analyzer.java:588)
    at aQute.bnd.osgi.Analyzer.analyze(Analyzer.java:171)
    at aQute.bnd.osgi.Builder.analyze(Builder.java:344)
    at aQute.bnd.osgi.Analyzer.calcManifest(Analyzer.java:618)
    at aQute.bnd.osgi.Builder.build(Builder.java:81)
    at aQute.bnd.osgi.Builder.builds(Builder.java:1243)
    at aQute.bnd.build.ProjectBuilder.builds(ProjectBuilder.java:520)
    at aQute.bnd.build.Project.buildLocal(Project.java:1417)
    at org.bndtools.builder.NewBuilder.rebuild(NewBuilder.java:655)
    at org.bndtools.builder.NewBuilder.rebuildIfLocalChanges(NewBuilder.java:545)
    at org.bndtools.builder.NewBuilder.build(NewBuilder.java:199)
    at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:734)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
    at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:299)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:302)
    at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:358)
    at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:381)
    at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
    at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

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在工作中，我们使用 Eclipse PDE + SCR(XML)，它与抽象类继承配合得很好。现在我重新审视了纲要规范，它对 SCR 注释有这样的说法:

The Declarative Services Annotations are not inherited, they can only be used on a given class, anno- tations on its super class hierarchy or interfaces are not taken into account.

---

将我自己的依赖管理包装在程序依赖管理器之上似乎是合适的。我将调查/制作原型(prototype)，看看效果如何。

Answer 1

我遇到了同样的问题，

问题是我的类没有使用@Component 注释进行注释。尝试将 @Component 添加到包含您在此处注意到的代码的当前类。

希望对你有帮助