org.apache.sling.discovery

Interface PropertyProvider

public interface PropertyProvider

The PropertyProvider service interface may be implemented by components that wish to define properties on the local instance which then are broadcast to the TopologyView instances.

The provided properties are registered with the PROPERTY_PROPERTIES service property. If the set of provided properties changes or one of the provided values change, the service registration of the provider should be updated. This avoids periodic polling for changes.

Field Summary

Fields

Modifier and Type	Field and Description
static String	PROPERTY_PROPERTIES The name of the service registration property containing the names of the properties provided by this provider.

Method Summary

Modifier and Type	Method and Description
String	getProperty(String name) Retrieves a property that is subsequently set on the local instance and broadcast to the TopologyView instances.

Field Detail

PROPERTY_PROPERTIES

static final String PROPERTY_PROPERTIES

The name of the service registration property containing the names of the properties provided by this provider. The value is either a string or an array of strings. A property name must only contain alphanumeric characters plus ., _, -.

See Also:

Constant Field Values

Method Detail

getProperty

String getProperty(String name)

Retrieves a property that is subsequently set on the local instance and broadcast to the TopologyView instances.

These properties are non-persistent and disappear after the local instance goes down.

Returns:

The value of the property or null. If the property value can't be provided or if the provider does not support this property, it must return null.