org.osgi.service.device

Interface DriverSelector

public interface DriverSelector

When the device manager detects a new Device service, it calls all registered Driver services to determine if anyone matches the Device service. If at least one Driver service matches, the device manager must choose one. If there is a Driver Selector service registered with the Framework, the device manager will ask it to make the selection. If there is no Driver Selector service, or if it returns an invalid result, or throws an Exception, the device manager uses the default selection strategy.

Since:

1.1

"ThreadSafe"

Field Summary

Fields

Modifier and Type	Field and Description
static int	SELECT_NONE Return value from DriverSelector.select, if no Driver service should be attached to the Device service.

Method Summary

Modifier and Type	Method and Description
int	select(ServiceReference<?> reference, Match[] matches) Select one of the matching Driver services.

Field Detail

SELECT_NONE

static final int SELECT_NONE

Return value from DriverSelector.select, if no Driver service should be attached to the Device service. The value is -1.

See Also:

Constant Field Values

Method Detail

select

int select(ServiceReference<?> reference,
           Match[] matches)

Select one of the matching Driver services. The device manager calls this method if there is at least one driver bidding for a device. Only Driver services that have responded with nonzero (not Device.MATCH_NONE) match values will be included in the list.

Parameters:

reference - the ServiceReference object of the Device service.

matches - the array of all non-zero matches.

Returns:

index into the array of Match objects, or SELECT_NONE if no Driver service should be attached