net.sf.ehcache.writer.writebehind.operations.SingleOperation Maven / Gradle / Ivy
/**
* Copyright Terracotta, Inc.
*
* 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 net.sf.ehcache.writer.writebehind.operations;
import net.sf.ehcache.writer.CacheWriter;
import java.util.List;
/**
* Interface to implement single operations that are performed with write-behind
*
* @author Geert Bevin
* @version $Id: SingleOperation.java 5594 2012-05-07 16:04:31Z cdennis $
*/
public interface SingleOperation extends KeyBasedOperation {
/**
* Perform this operation as a single execution with the provided cache writer
*
* @param cacheWriter the cache writer this operation should be performed upon
*/
public void performSingleOperation(CacheWriter cacheWriter);
/**
* Creates a batch operation that corresponds to the operation type of this single operation.
*
* This batch operation will not be stored in the queue anymore and is solely used for structuring.
* The data from the single operation will already be processed in the final form that will be expected by the
* {@code CacheWriter} that will be used to execute the batch operation.
*
* @param operations the single operations that need to be regrouped in the batch operation
* @return the created batch operation
*/
public BatchOperation createBatchOperation(List operations);
/**
* Returns a stable identifier for the type this operation can be classified in. This is used to group and order
* batched operations.
*
* @return the identifier for this operation type
*/
public SingleOperationType getType();
/**
* Called when all retries have failed
* @param cacheWriter the CacheWriter to delegate to
* @param e the last exception encountered
*/
void throwAway(final CacheWriter cacheWriter, RuntimeException e);
}
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