juneau-core/juneau-marshall/src/main/java/org/apache/juneau/utils/IdGenerator.java

// ***************************************************************************************************************************
// * 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.juneau.utils;

/**
 * Simple interface for defining atomic ID generators.
 *
 * @param <K> The ID type.
 */
public interface IdGenerator<K> {

	/**
	 * Returns the next available ID.
	 *
	 * @return The next available ID.
	 */
	K next();

	/**
	 * Sets a lower bound for this generator.
	 *
	 * @param k The lower bound.
	 */
	void lb(K k);
}