com.orientechnologies.orient.core.storage.impl.local.paginated.wal.OOperationUnitId Maven / Gradle / Ivy
/*
* Copyright 2010-2013 Orient Technologies LTD (info--at--orientechnologies.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.orientechnologies.orient.core.storage.impl.local.paginated.wal;
import java.util.UUID;
import com.orientechnologies.common.serialization.types.OLongSerializer;
/**
* @author Andrey Lomakin
* @since 06.06.13
*/
public class OOperationUnitId {
public static final int SERIALIZED_SIZE = 2 * OLongSerializer.LONG_SIZE;
private UUID uuid;
public static OOperationUnitId generateId() {
OOperationUnitId operationUnitId = new OOperationUnitId();
operationUnitId.uuid = UUID.randomUUID();
return operationUnitId;
}
public OOperationUnitId() {
}
public OOperationUnitId(UUID uuid) {
this.uuid = uuid;
}
public int toStream(byte[] content, int offset) {
OLongSerializer.INSTANCE.serializeNative(uuid.getMostSignificantBits(), content, offset);
offset += OLongSerializer.LONG_SIZE;
OLongSerializer.INSTANCE.serializeNative(uuid.getLeastSignificantBits(), content, offset);
offset += OLongSerializer.LONG_SIZE;
return offset;
}
public int fromStream(byte[] content, int offset) {
long most = OLongSerializer.INSTANCE.deserializeNative(content, offset);
offset += OLongSerializer.LONG_SIZE;
long least = OLongSerializer.INSTANCE.deserializeNative(content, offset);
offset += OLongSerializer.LONG_SIZE;
uuid = new UUID(most, least);
return offset;
}
@Override
public boolean equals(Object o) {
if (this == o)
return true;
if (o == null || getClass() != o.getClass())
return false;
OOperationUnitId that = (OOperationUnitId) o;
if (!uuid.equals(that.uuid))
return false;
return true;
}
@Override
public int hashCode() {
return uuid.hashCode();
}
@Override
public String toString() {
return "OOperationUnitId{" + "uuid=" + uuid + "} ";
}
}