/**
* Returns the command class that provides the best suitable converter to convert between the
* Z-Wave API and the binding.
*
* @param item the {@link item} to resolve a converter for.
* @param node the {@link ZWaveNode} node to resolve a Command class on.
* @param the enpoint ID to use to resolve a converter.
* @return the {@link ZWaveCommandClass} that can be used to get a converter suitable to do the
* conversion.
*/
private ZWaveCommandClass resolveConverter(Item item, ZWaveNode node, int endpointId) {
if (item == null) return null;
ZWaveMultiInstanceCommandClass multiInstanceCommandClass = null;
ZWaveCommandClass result = null;
if (endpointId != 1)
multiInstanceCommandClass =
(ZWaveMultiInstanceCommandClass) node.getCommandClass(CommandClass.MULTI_INSTANCE);
if (!preferredCommandClasses.containsKey(item.getClass())) {
logger.warn(
"No preferred command classes found for item class = {}", item.getClass().toString());
return null;
}
for (CommandClass commandClass : preferredCommandClasses.get(item.getClass())) {
if (multiInstanceCommandClass != null && multiInstanceCommandClass.getVersion() == 2) {
ZWaveEndpoint endpoint = multiInstanceCommandClass.getEndpoint(endpointId);
if (endpoint != null) {
result = endpoint.getCommandClass(commandClass);
}
}
if (result == null) result = node.getCommandClass(commandClass);
if (result == null) continue;
if (multiInstanceCommandClass != null
&& multiInstanceCommandClass.getVersion() == 1
&& result.getInstances() < endpointId) continue;
if (converters.containsKey(commandClass)) return result;
}
logger.warn(
"No matching command classes found for item class = {}, node id = {}, endpoint id = {}",
item.getClass().toString(),
node.getNodeId(),
endpointId);
return null;
}
