blob: 86463d79158569f479684565fd86f9237147c891 [file] [log] [blame]
/**
* 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.apex.malhar.lib.db;
/**
* This is the base implementation for a pass-through output adapter of a transactional key value store. 
* This implementation provides the "exactly once" guarantee. 
* A concrete operator should be created from this skeleton implementation.
* <p>
* "Pass-through" means it does not wait for end window to write to the store. It will begin transaction at begin window and write to the store as the tuples
* come and commit the transaction at end window.
* </p>
* @displayName Abstract Pass Through Transactionable Key Value Store Output
* @category Outupt
* @tags key value, transactional
*
* @param <T> The tuple type
* @param <S> The store type
* @since 0.9.3
*/
@org.apache.hadoop.classification.InterfaceStability.Evolving
public abstract class AbstractPassThruTransactionableKeyValueStoreOutputOperator<T, S extends TransactionableKeyValueStore>
extends AbstractPassThruTransactionableStoreOutputOperator<T, S>
{
}