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/*
* Copyright (c) 2018-2020 bartimaeusnek Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following
* conditions: The above copyright notice and this permission notice shall be included in all copies or substantial
* portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package bartworks.util;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
public class NonNullWrappedHashMap<K, V> extends HashMap<K, V> {
private static final long serialVersionUID = 46345163103910175L;
private final V defaultValue;
public NonNullWrappedHashMap(int initialCapacity, float loadFactor, V defaultValue) {
super(initialCapacity, loadFactor);
this.defaultValue = Objects.requireNonNull(defaultValue);
}
public NonNullWrappedHashMap(int initialCapacity, V defaultValue) {
super(initialCapacity);
this.defaultValue = Objects.requireNonNull(defaultValue);
}
public NonNullWrappedHashMap(V defaultValue) {
this.defaultValue = Objects.requireNonNull(defaultValue);
}
public NonNullWrappedHashMap(Map<? extends K, ? extends V> m, V defaultValue) {
super(m);
this.defaultValue = Objects.requireNonNull(defaultValue);
}
@Override
public V get(Object key) {
return this.getOrDefault(key, this.defaultValue);
}
@Override
public V getOrDefault(Object key, V defaultValue) {
return Objects.requireNonNull(
Optional.ofNullable(super.getOrDefault(key, defaultValue))
.orElse(this.defaultValue));
}
}
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