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• BoundedMap.java

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org.apache.openjpa.lib.util.collections.BoundedMap Maven / Gradle / Ivy

/*
 * 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.openjpa.lib.util.collections;

/**
 * Defines a map that is bounded in size.
 * 

 * The size of the map can vary, but it can never exceed a preset
 * maximum number of elements. This interface allows the querying of details
 * associated with the maximum number of elements.
 * 
 *
 * @param  the type of the keys in this map
 * @param  the type of the values in this map
 * @since 3.0
 */
public interface BoundedMap extends IterableMap {

    /**
     * Returns true if this map is full and no new elements can be added.
     *
     * @return true if the map is full
     */
    boolean isFull();

    /**
     * Gets the maximum size of the map (the bound).
     *
     * @return the maximum number of elements the map can hold
     */
    int maxSize();

}