org.apache.camel.resume.Offset Maven / Gradle / Ivy
/*
* 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.camel.resume;
import java.nio.ByteBuffer;
/**
* Generic offset without a concrete type
*
* @param the type of the offset
*/
public interface Offset extends Serializable {
/**
* Sets the current offset value
*
* @param offset the current offset value
*/
void update(T offset);
/**
* Gets the offset value
*
* @return the offset value
*/
T getValue();
/**
* Gets the offset value converting it to the given type
*
* @param tClass type to convert the value to
* @return the offset value or null if it cannot be converted
*/
default V getValue(Class tClass) {
try {
return tClass.cast(getValue());
} catch (ClassCastException e) {
return null;
}
}
@Override
default ByteBuffer serialize() {
return serialize(getValue());
}
}