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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 org.apache.commons.io.monitor;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.nio.file.attribute.FileTime;
import java.time.Instant;
import java.util.Objects;
import java.util.concurrent.TimeUnit;
import org.apache.commons.io.file.attribute.FileTimes;
/**
* Wraps a {@link FileTime} and allows it to be serializable.
*/
class SerializableFileTime implements Serializable {
static final SerializableFileTime EPOCH = new SerializableFileTime(FileTimes.EPOCH);
private static final long serialVersionUID = 1L;
private FileTime fileTime;
public SerializableFileTime(final FileTime fileTime) {
this.fileTime = Objects.requireNonNull(fileTime);
}
public int compareTo(final FileTime other) {
return fileTime.compareTo(other);
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof SerializableFileTime)) {
return false;
}
final SerializableFileTime other = (SerializableFileTime) obj;
return Objects.equals(fileTime, other.fileTime);
}
@Override
public int hashCode() {
return fileTime.hashCode();
}
private void readObject(final ObjectInputStream ois) throws ClassNotFoundException, IOException {
this.fileTime = FileTime.from((Instant) ois.readObject());
}
long to(final TimeUnit unit) {
return fileTime.to(unit);
}
Instant toInstant() {
return fileTime.toInstant();
}
long toMillis() {
return fileTime.toMillis();
}
@Override
public String toString() {
return fileTime.toString();
}
FileTime unwrap() {
return fileTime;
}
private void writeObject(final ObjectOutputStream oos) throws IOException {
oos.writeObject(fileTime.toInstant());
}
}
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