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/*******************************************************************************
* ============LICENSE_START=======================================================
* org.onap.dmaap
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*
*******************************************************************************/
package com.att.dmf.mr.transaction;
import java.util.Set;
import com.att.nsa.configs.ConfigDbException;
import com.att.nsa.security.NsaSecurityManagerException;
/**
* Persistent storage for Transaction Object and secrets built over an abstract config db. Instances
* of this DB must support concurrent access.
* @author nilanjana.maity
*
* @param <K> DMaaPTransactionObj
*/
public interface DMaaPTransactionObjDB <K extends DMaaPTransactionObj> {
/**
* Create a new Transaction Object. If one exists,
* @param id
* @return the new Transaction record
* @throws ConfigDbException
*/
K createTransactionObj (String id) throws KeyExistsException, ConfigDbException;
/**
* An exception to signal a Transaction object already exists
* @author nilanjana.maity
*
*/
public static class KeyExistsException extends NsaSecurityManagerException
{
/**
* If the key exists
* @param key
*/
public KeyExistsException ( String key ) { super ( "Transaction Object " + key + " exists" ); }
private static final long serialVersionUID = 1L;
}
/**
* Save a Transaction Object record. This must be used after changing auxiliary data on the record.
* Note that the transaction must exist (via createTransactionObj).
* @param transactionObj
* @throws ConfigDbException
*/
void saveTransactionObj ( K transactionObj ) throws ConfigDbException;
/**
* Load an Transaction Object record based on the Transaction ID value
* @param transactionId
* @return a transaction record or null
* @throws ConfigDbException
*/
K loadTransactionObj ( String transactionId ) throws ConfigDbException;
/**
* Load all Transaction objects.
* @return
* @throws ConfigDbException
*/
Set<String> loadAllTransactionObjs () throws ConfigDbException;
}
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