br.com.objectos.io.NoopWatchKey Maven / Gradle / Ivy

Go to download
/*
 * Copyright (C) 2011-2021 Objectos Software LTDA.
 *
 * Licensed 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 br.com.objectos.io;

import java.nio.file.WatchEvent;
import java.nio.file.WatchKey;
import java.nio.file.Watchable;
import java.util.Collections;
import java.util.List;

enum NoopWatchKey implements WatchKey {
  INSTANCE;

  @Override
  public final void cancel() {
    throw new UnsupportedOperationException();
  }

  @Override
  public final boolean isValid() {
    throw new UnsupportedOperationException();
  }

  @Override
  public final List> pollEvents() {
    return Collections.emptyList();
  }

  @Override
  public final boolean reset() {
    return true;
  }

  @Override
  public final Watchable watchable() {
    throw new UnsupportedOperationException();
  }
}