LongProcessReporter.java

/*
 * Copyright 2016 MiLaboratory.com
 *
 * 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 com.milaboratory.util;

public interface LongProcessReporter {
    /**
     * /dev/null
     */
    LongProcessReporter NULL = new LongProcessReporter() {
        @Override
        public LongProcess start(String name) {
            return new LongProcess() {
                @Override
                public void reportStatus(double progress) {
                }

                @Override
                public void close() {
                }
            };
        }
    };

    LongProcess start(String name);

    class DefaultLongProcessReporter {
        public static volatile LongProcessReporter INSTANCE = NULL;
    }
}