/*
* 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.isis.runtimes.dflt.objectstores.nosql;
import java.util.Date;
import org.apache.isis.core.metamodel.adapter.version.SerialNumberVersion;
import org.apache.isis.core.metamodel.adapter.version.Version;
public class SerialNumberVersionCreator implements VersionCreator {
@Override
public String versionString(final Version version) {
final long sequence = ((SerialNumberVersion) version).getSequence();
return Long.toHexString(sequence);
}
@Override
public String timeString(final Version version) {
final Date time = version.getTime();
return Long.toHexString(time.getTime());
}
@Override
public Version version(final String versionString, final String user, final String timeString) {
final Long sequence = Long.valueOf(versionString, 16);
final Long time = Long.valueOf(timeString, 16);
final Date date = new Date(time);
return new SerialNumberVersion(sequence, user, date);
}
@Override
public Version newVersion(final String user) {
return new SerialNumberVersion(1, user, new Date());
}
@Override
public Version nextVersion(final Version version) {
final long sequence = ((SerialNumberVersion) version).getSequence() + 1;
final String user = version.getUser();
return new SerialNumberVersion(sequence, user, new Date());
}
}