Topic.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 class Topic {
  Topic(NetworkTableInstance inst, int handle) {
    m_inst = inst;
    m_handle = handle;
  }

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

  public int getHandle() {
    return m_handle;
  }

  public NetworkTableInstance getInstance() {
    return m_inst;
  }

  public String getName() {
    return NetworkTablesJNI.getTopicName(m_handle);
  }

  public NetworkTableType getType() {
    return NetworkTableType.getFromInt(NetworkTablesJNI.getType(m_handle));
  }

  public String getTypeString() {
    return NetworkTablesJNI.getTopicTypeString(m_handle);
  }

  public TopicInfo getInfo() {
    return NetworkTablesJNI.getTopicInfo(m_inst, m_handle);
  }

  public void setPersistent(boolean persistent) {
    NetworkTablesJNI.setTopicPersistent(m_handle, persistent);
  }

  public boolean isPersistent() {
    return NetworkTablesJNI.getTopicPersistent(m_handle);
  }

  public void setRetained(boolean retained) {
    NetworkTablesJNI.setTopicRetained(m_handle, retained);
  }

  public boolean isRetained() {
    return NetworkTablesJNI.getTopicRetained(m_handle);
  }

  public void setCached(boolean cached) {
    NetworkTablesJNI.setTopicCached(m_handle, cached);
  }

  public boolean isCached() {
    return NetworkTablesJNI.getTopicCached(m_handle);
  }

  public boolean exists() {
    return NetworkTablesJNI.getTopicExists(m_handle);
  }

  public String getProperty(String name) {
    return NetworkTablesJNI.getTopicProperty(m_handle, name);
  }

  public void setProperty(String name, String value) {
    NetworkTablesJNI.setTopicProperty(m_handle, name, value);
  }

  public void deleteProperty(String name) {
    NetworkTablesJNI.deleteTopicProperty(m_handle, name);
  }

  public String getProperties() {
    return NetworkTablesJNI.getTopicProperties(m_handle);
  }

  public void setProperties(String properties) {
    NetworkTablesJNI.setTopicProperties(m_handle, properties);
  }

  public GenericSubscriber genericSubscribe(PubSubOption... options) {
    return genericSubscribe("", options);
  }

  public GenericSubscriber genericSubscribe(String typeString, PubSubOption... options) {
    return new GenericEntryImpl(
        this,
        NetworkTablesJNI.subscribe(
            m_handle, NetworkTableType.getFromString(typeString).getValue(), typeString, options));
  }

  public GenericPublisher genericPublish(String typeString, PubSubOption... options) {
    return new GenericEntryImpl(
        this,
        NetworkTablesJNI.publish(
            m_handle, NetworkTableType.getFromString(typeString).getValue(), typeString, options));
  }

  public GenericPublisher genericPublishEx(
      String typeString, String properties, PubSubOption... options) {
    return new GenericEntryImpl(
        this,
        NetworkTablesJNI.publishEx(
            m_handle,
            NetworkTableType.getFromString(typeString).getValue(),
            typeString,
            properties,
            options));
  }

  public GenericEntry getGenericEntry(PubSubOption... options) {
    return getGenericEntry("", options);
  }

  public GenericEntry getGenericEntry(String typeString, PubSubOption... options) {
    return new GenericEntryImpl(
        this,
        NetworkTablesJNI.getEntry(
            m_handle, NetworkTableType.getFromString(typeString).getValue(), typeString, options));
  }
 
  @Override
  public boolean equals(Object other) {
    return other instanceof Topic topic && m_handle == topic.m_handle;
  }
 
  @Override
  public int hashCode() {
    return m_handle;
  }

  protected final NetworkTableInstance m_inst;

  protected final int m_handle;
}