Package edu.wpi.first.networktables

Interface RawSubscriber

All Superinterfaces:
AutoCloseable, PubSub, Subscriber, Supplier<byte[]>
All Known Subinterfaces:
RawEntry
public interface RawSubscriber
extends Subscriber, Supplier<byte[]>
NetworkTables Raw subscriber.

  • Method Summary

    Modifier and Type Method Description
    byte[] get()
    Get the last published value.
    byte[] get​(byte[] defaultValue)
    Get the last published value.
    TimestampedRaw getAtomic()
    Get the last published value along with its timestamp If no value has been published, returns the stored default value and a timestamp of 0.
    TimestampedRaw getAtomic​(byte[] defaultValue)
    Get the last published value along with its timestamp If no value has been published, returns the passed defaultValue and a timestamp of 0.
    RawTopic getTopic()
    Get the corresponding topic.
    TimestampedRaw[] readQueue()
    Get an array of all value changes since the last call to readQueue.
    byte[][] readQueueValues()
    Get an array of all value changes since the last call to readQueue.

    Methods inherited from interface edu.wpi.first.networktables.PubSub

    close, getHandle, isValid

    Methods inherited from interface edu.wpi.first.networktables.Subscriber

    exists, getLastChange

  • Method Details

    • getTopic

      RawTopic getTopic()
      Get the corresponding topic.
      Specified by:
      getTopic in interface PubSub
      Returns:
      Topic

    • get

      byte[] get()
      Get the last published value. If no value has been published, returns the stored default value.
      Specified by:
      get in interface Supplier<byte[]>
      Returns:
      value

    • get

      byte[] get​(byte[] defaultValue)
      Get the last published value. If no value has been published, returns the passed defaultValue.
      Parameters:
      defaultValue - default value to return if no value has been published
      Returns:
      value

    • getAtomic

      TimestampedRaw getAtomic()
      Get the last published value along with its timestamp If no value has been published, returns the stored default value and a timestamp of 0.
      Returns:
      timestamped value

    • getAtomic

      TimestampedRaw getAtomic​(byte[] defaultValue)
      Get the last published value along with its timestamp If no value has been published, returns the passed defaultValue and a timestamp of 0.
      Parameters:
      defaultValue - default value to return if no value has been published
      Returns:
      timestamped value

    • readQueue

      TimestampedRaw[] readQueue()
      Get an array of all value changes since the last call to readQueue. Also provides a timestamp for each value.

      The "poll storage" subscribe option can be used to set the queue depth.

      Returns:
      Array of timestamped values; empty array if no new changes have been published since the previous call.

    • readQueueValues

      byte[][] readQueueValues()
      Get an array of all value changes since the last call to readQueue.

      The "poll storage" subscribe option can be used to set the queue depth.

      Returns:
      Array of values; empty array if no new changes have been published since the previous call.