[我正在尝试用Scala编写OSGi服务(大多数其他服务/捆绑都是用Java编写的,我在语法上有些挣扎。
通常在Java中,可以在这样的构造函数上使用@Activate
批注:
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Deactivate;
import org.osgi.service.component.annotations.Reference;
@Component(configurationPid = "PID", service=AgentService.class, immediate=true)
public class AgentServiceImpl implements AgentService {
@Activate
public AgentServiceImpl(@Reference Service1 service1, @Reference Service2 service2) {
// ...
}
在Scala中,它看起来应该像这样:
import org.osgi.service.component.annotations.{Activate, Component, Deactivate, Reference}
@Component(
configurationPid = "PID",
service = Array(classOf[AgentService]),
immediate = true)
class AgentServiceImpl @Activate() (@Reference service1: Service1,
@Reference service2: Service2) implements AgentService {
// ...
}
当我尝试使用Scatter编译此Scala代码时,出现了以下错误消息:
error : In component xxx.xxxx.xx.xx.agent.AgentServiceImpl , multiple references with the same name: service1. Previous def: xxx.xxxx.xx.xx.service.Service1, this def:
error : In component xxx.xxxx.xx.xx.agent.AgentServiceImpl , multiple references with the same name: service2. Previous def: xxx.xxxx.xx.xx.service.Service2, this def:
发生这种情况是因为我有关注释的语法是错误的吗?我对此@Activate()
位不太确定。在Java中,我不需要在这里使用方括号-但如果没有Scala,它就无法编译。
有人知道一个示例项目试图做类似的事情吗?