org.cache2k.integration.LoadDetail Maven / Gradle / Ivy
package org.cache2k.integration;
/*
* #%L
* cache2k API
* %%
* Copyright (C) 2000 - 2020 headissue GmbH, Munich
* %%
* 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.
* #L%
*/
/**
* A loaded value may be wrapped by the loader to transport auxiliary information
* to the cache. Use the utility methods in {@link Loaders}
*
* @author Jens Wilke
*/
public abstract class LoadDetail {
private Object value;
public LoadDetail(final Object valueOrWrapper) {
value = valueOrWrapper;
}
@SuppressWarnings("unchecked")
public V getValue() {
if (value instanceof LoadDetail) {
return ((LoadDetail) value).getValue();
}
return (V) value;
}
@SuppressWarnings("unchecked")
public LoadDetail getNextInChain() {
if (value instanceof LoadDetail) {
return ((LoadDetail) value);
}
return null;
}
}