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/*-
* ============LICENSE_START=======================================================
* policy-core
* ================================================================================
* Copyright (C) 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=========================================================
*/
package org.onap.policy.common.capabilities;
/**
* Interface for classes that supports lock/unlock operations.
*/
public interface Lockable {
/**
* Locks this entity.
*
* @return true is the lock operation was successful, false otherwise
*/
public boolean lock();
/**
* Unlocks this entity.
*
* @return true is the unlock operation was successful, false otherwise
*/
public boolean unlock();
/**
* Checks if this entity is locked.
*
* @return true if the entity is in a locked state, false otherwise
*/
public boolean isLocked();
}
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