com.datastax.oss.driver.api.core.metadata.NodeStateListenerBase Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.datastax.oss.driver.api.core.metadata;

import edu.umd.cs.findbugs.annotations.NonNull;

/**
 * Convenience class for listener implementations that that don't need to override all methods (all
 * methods in this class are empty).
 */
public class NodeStateListenerBase implements NodeStateListener {

  @Override
  public void onAdd(@NonNull Node node) {
    // nothing to do
  }

  @Override
  public void onUp(@NonNull Node node) {
    // nothing to do
  }

  @Override
  public void onDown(@NonNull Node node) {
    // nothing to do
  }

  @Override
  public void onRemove(@NonNull Node node) {
    // nothing to do
  }

  @Override
  public void close() throws Exception {
    // nothing to do
  }
}