org.springframework.batch.core.ItemWriteListener Maven / Gradle / Ivy
/*
* Copyright 2006-2013 the original author or authors.
*
* 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
*
* https://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.springframework.batch.core;
import java.util.List;
import org.springframework.batch.core.scope.context.ChunkContext;
import org.springframework.batch.item.ItemWriter;
/**
*
* Listener interface for the writing of items. Implementations
* of this interface will be notified before, after, and in case
* of any exception thrown while writing a list of items.
*
*
*
* Note: This listener is designed to work around the
* lifecycle of an item. This means that each method should be
* called once within the lifecycle of an item and in fault
* tolerant scenarios, any transactional work that is done in
* one of these methods would be rolled back and not re-applied.
* Because of this, it is recommended to not perform any logic
* using this listener that participates in a transaction.
*
*
* @author Lucas Ward
*
*/
public interface ItemWriteListener extends StepListener {
/**
* Called before {@link ItemWriter#write(java.util.List)}
*
* @param items to be written
*/
void beforeWrite(List items);
/**
* Called after {@link ItemWriter#write(java.util.List)} This will be
* called before any transaction is committed, and before
* {@link ChunkListener#afterChunk(ChunkContext)}
*
* @param items written items
*/
void afterWrite(List items);
/**
* Called if an error occurs while trying to write. Will be called inside a
* transaction, but the transaction will normally be rolled back. There is
* no way to identify from this callback which of the items (if any) caused
* the error.
*
* @param exception thrown from {@link ItemWriter}
* @param items attempted to be written.
*/
void onWriteError(Exception exception, List items);
}