Package edu.wpi.first.networktables

Interface GenericSubscriber

All Superinterfaces:
AutoCloseable, PubSub, Subscriber, Supplier<NetworkTableValue>
All Known Subinterfaces:
GenericEntry
public interface GenericSubscriber
extends Subscriber, Supplier<NetworkTableValue>
NetworkTables generic subscriber.

  • Method Details

    • getTopic

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

    • get

      NetworkTableValue get()
      Get the last published value. If no value has been published, returns a value with type NetworkTableType.kUnassigned.
      Specified by:
      get in interface Supplier<NetworkTableValue>
      Returns:
      value

    • getBoolean

      boolean getBoolean​(boolean defaultValue)
      Gets the entry's value as a boolean. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getInteger

      long getInteger​(long defaultValue)
      Gets the entry's value as a long. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getFloat

      float getFloat​(float defaultValue)
      Gets the entry's value as a float. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getDouble

      double getDouble​(double defaultValue)
      Gets the entry's value as a double. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getString

      String getString​(String defaultValue)
      Gets the entry's value as a String. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getRaw

      byte[] getRaw​(byte[] defaultValue)
      Gets the entry's value as a byte[]. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getBooleanArray

      boolean[] getBooleanArray​(boolean[] defaultValue)
      Gets the entry's value as a boolean[]. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getBooleanArray

      Boolean[] getBooleanArray​(Boolean[] defaultValue)
      Gets the entry's value as a boolean array. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getIntegerArray

      long[] getIntegerArray​(long[] defaultValue)
      Gets the entry's value as a long[]. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getIntegerArray

      Long[] getIntegerArray​(Long[] defaultValue)
      Gets the entry's value as a boolean array. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getFloatArray

      float[] getFloatArray​(float[] defaultValue)
      Gets the entry's value as a float[]. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getFloatArray

      Float[] getFloatArray​(Float[] defaultValue)
      Gets the entry's value as a boolean array. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getDoubleArray

      double[] getDoubleArray​(double[] defaultValue)
      Gets the entry's value as a double[]. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getDoubleArray

      Double[] getDoubleArray​(Double[] defaultValue)
      Gets the entry's value as a boolean array. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • getStringArray

      String[] getStringArray​(String[] defaultValue)
      Gets the entry's value as a String[]. If the entry does not exist or is of different type, it will return the default value.
      Parameters:
      defaultValue - the value to be returned if no value is found
      Returns:
      the entry's value or the given default value

    • readQueue

      NetworkTableValue[] 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.