com.cedarsoftware.util.CompactCIHashMap Maven / Gradle / Ivy
package com.cedarsoftware.util;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* Useful Map that does not care about the case-sensitivity of keys
* when the key value is a String. Other key types can be used.
* String keys will be treated case insensitively, yet key case will
* be retained. Non-string keys will work as they normally would.
*
* This Map uses very little memory (See CompactMap). When the Map
* has more than 'compactSize()' elements in it, the 'delegate' Map
* is a HashMap.
*
* @author John DeRegnaucourt ([email protected])
*
* Copyright (c) Cedar Software LLC
*
* 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
*
* License
*
* 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.
*/
public class CompactCIHashMap extends CompactMap
{
public CompactCIHashMap() { }
public CompactCIHashMap(Map other) { super(other); }
protected Map getNewMap() { return new CaseInsensitiveMap<>(Collections.emptyMap(), new HashMap<>(compactSize() + 1)); }
protected boolean isCaseInsensitive() { return true; }
protected boolean useCopyIterator() { return false; }
}