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 /*
  * Copyright (c) 2010. Axon Framework
  *
  * 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 org.axonframework.repository;
Interface to the lock manager. A lock manager will maintain and validate locks on aggregates of a single type

Author(s):
Allard Buijze
Since:
0.3
interface LockManager {

    
Make sure that the current thread holds a valid lock for the given aggregate.

Parameters:
aggregate the aggregate to validate the lock for
Returns:
true if a valid lock is held, false otherwise
    boolean validateLock(AggregateRoot aggregate);

    
Obtain a lock for an aggregate with the given aggregateIdentifier. Depending on the strategy, this method may return immediately or block until a lock is held.

Parameters:
aggregateIdentifier the identifier of the aggregate to obtains a lock for.
    void obtainLock(AggregateIdentifier aggregateIdentifier);

    
Release the lock held for an aggregate with the given aggregateIdentifier. The caller of this method must ensure a valid lock was requested using obtainLock(org.axonframework.domain.AggregateIdentifier). If no lock was successfully obtained, the behavior of this method is undefined.

Parameters:
aggregateIdentifier the identifier of the aggregate to release the lock for.
    void releaseLock(AggregateIdentifier aggregateIdentifier);
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