ros

Class RosBridge.RosBridgeSubscriber

java.lang.Object

ros.RosBridge.RosBridgeSubscriber

Enclosing class:

RosBridge

public static class RosBridge.RosBridgeSubscriber
extends Object

Class for managing all the listeners that have subscribed to a topic on Rosbridge. Maintains a list of RosListenDelegate objects and informs them all when a message has been received from Rosbridge.

Field Summary

Fields

Modifier and Type	Field and Description
protected List<RosListenDelegate>	delegates

Constructor Summary

Constructors

Constructor and Description
RosBridgeSubscriber()
RosBridgeSubscriber(RosListenDelegate... delegates) Initializes and adds all the input delegates to receive messages.

Method Summary

Modifier and Type	Method and Description
void	addDelegate(RosListenDelegate delegate) Adds a delegate to receive messages from Rosbridge.
int	numDelegates() Returns the number of delegates listening to this topic.
void	receive(com.fasterxml.jackson.databind.JsonNode data, String stringRep) Receives a new published message to a subscribed topic and informs all listeners.
void	removeDelegate(RosListenDelegate delegate) Removes a delegate from receiving messages from Rosbridge

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

delegates

protected List<RosListenDelegate> delegates

Constructor Detail

RosBridgeSubscriber

public RosBridgeSubscriber()

RosBridgeSubscriber

public RosBridgeSubscriber(RosListenDelegate... delegates)

Initializes and adds all the input delegates to receive messages.

Parameters:

delegates - the delegates to receive messages.

Method Detail

addDelegate

public void addDelegate(RosListenDelegate delegate)

Adds a delegate to receive messages from Rosbridge.

Parameters:

delegate - a delegate to receive messages from Rosbridge.

removeDelegate

public void removeDelegate(RosListenDelegate delegate)

Removes a delegate from receiving messages from Rosbridge

Parameters:

delegate - the delegate to stop receiving messages.

receive

public void receive(com.fasterxml.jackson.databind.JsonNode data,
                    String stringRep)

Receives a new published message to a subscribed topic and informs all listeners.

Parameters:

data - the JsonNode containing the JSON data received.

stringRep - the string representation of the JSON object.

numDelegates

public int numDelegates()

Returns the number of delegates listening to this topic.

Returns:

the number of delegates listening to this topic.