如何在OSGi中使用多值(数组)属性？

Question

我有以下服务:

@Component(
        immediate = true,
        metatype = true)
@Service
@Property(name = EventConstants.EVENT_TOPIC, value = {ReplicationAction.EVENT_TOPIC})
public class MyService implements EventHandler {

    @Property
    private static final String MULTI_PROPERTY = "config.multiproperty";

    ........
    //another implementation
    ........
}

我想MULTI_PROPERTY成为数组值,有可能使用像图像上的一组值:

怎么实现呢？

Answer 1

使用该unbounded属性指定多值属性,并使用该cardinality属性限制条目数.

 @Property(unbounded = PropertyUnbounded.ARRAY, cardinality=10, label = "Some Label")
 private static final String MULTI_PROPERTY = "config.multiproperty";

为了读取属性数组,您可以使用#toStringArray()方法PropertiesUtil

PropertiesUtil.toStringArray(properties.get(MULTI_PROPERTY));