MultiSubscriber.java

// Copyright (c) FIRST and other WPILib contributors.
// Open Source Software; you can modify and/or share it under the terms of
// the WPILib BSD license file in the root directory of this project.
 
package org.wpilib.networktables;

public final class MultiSubscriber implements AutoCloseable {
  public MultiSubscriber(NetworkTableInstance inst, String[] prefixes, PubSubOption... options) {
    m_inst = inst;
    m_handle = NetworkTablesJNI.subscribeMultiple(inst.getHandle(), prefixes, options);
  }
 
  @Override
  public synchronized void close() {
    if (m_handle != 0) {
      NetworkTablesJNI.unsubscribeMultiple(m_handle);
      m_handle = 0;
    }
  }

  public NetworkTableInstance getInstance() {
    return m_inst;
  }

  public boolean isValid() {
    return m_handle != 0;
  }

  public int getHandle() {
    return m_handle;
  }
 
  private final NetworkTableInstance m_inst;
  private int m_handle;
}