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Kuali Utilities

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/**
 * Copyright 2010-2014 The Kuali Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
 *
 * 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.kuali.common.util.runonce.smart;

public interface RunOnce {

	/**
	 * Do whatever is needed for isTrue() to return the correct value
	 */
	void initialize();

	/**
	 * Indicates it is safe to run something once.
	 */
	boolean isTrue();

	/**
	 * Update state in a way that persists across JVM restarts (eg database table, properties file, etc)
	 */
	void changeState(RunOnceState state);

}