com.github.jinahya.openfire.persistence.DateMillisAttributeConverter Maven / Gradle / Ivy
/*
* Copyright 2017 Jin Kwon <onacit at gmail.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.github.jinahya.openfire.persistence;
import java.util.Date;
import static java.util.Optional.ofNullable;
import javax.persistence.AttributeConverter;
/**
* An attribute converter for converting {@code Date} attribute to/from
* milliseconds numeric columns.
*
* @author Jin Kwon <onacit at gmail.com>
*/
public class DateMillisAttributeConverter
implements AttributeConverter {
@Override
public Long convertToDatabaseColumn(final Date attribute) {
return ofNullable(attribute).map(Date::getTime).orElse(null);
}
@Override
public Date convertToEntityAttribute(final Long dbData) {
return ofNullable(dbData).map(Date::new).orElse(null);
}
}