ResourceExists.java

/*
 * Copyright 2015 the original author or authors.
 *
 * 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 io.atomix.manager.internal;

import io.atomix.copycat.Query;

/**
 * Resource exists command.
 *
 * @author <a href="http://github.com/kuujo">Jordan Halterman</a>
 */
public class ResourceExists extends KeyOperation<Boolean> implements Query<Boolean> {

  public ResourceExists() {
  }

  /**
   * @throws NullPointerException if {@code path} is null
   */
  public ResourceExists(String path) {
    super(path);
  }

  @Override
  public ConsistencyLevel consistency() {
    return ConsistencyLevel.LINEARIZABLE;
  }

}