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63 lines
2.1 KiB
Java
63 lines
2.1 KiB
Java
/*
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XOWA: the XOWA Offline Wiki Application
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Copyright (C) 2012-2021 gnosygnu@gmail.com
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XOWA is licensed under the terms of the General Public License (GPL) Version 3,
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or alternatively under the terms of the Apache License Version 2.0.
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You may use XOWA according to either of these licenses as is most appropriate
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for your project on a case-by-case basis.
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The terms of each license can be found in the source code repository:
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GPLv3 License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-GPLv3.txt
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Apache License: https://github.com/gnosygnu/xowa/blob/master/LICENSE-APACHE2.txt
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*/
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package gplx.objects.lists;
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import gplx.objects.errs.ErrUtl;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.Spliterator;
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import java.util.function.Consumer;
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public class GfoHashBase<K, V> implements Iterable<Map.Entry<K, V>> {
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protected final Map<K, V> map = new HashMap<>();
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public int Len() {return map.size();}
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public void Clear() {map.clear();}
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public void Add(GfoHashKeyFunc<K> keyFunc, V v) {Add(keyFunc.ToHashKey(), v);}
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public void Add(K k, V v) {
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if (k == null) {
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throw ErrUtl.NewFmt("key cannot be null; val={0}", v);
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}
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if (map.containsKey(k)) {
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throw ErrUtl.NewFmt("key already exists: key={0} val={1}", k, v);
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}
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map.put(k, v);
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}
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public void Del(K k) {map.remove(k);}
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public void Set(K k, V v) {map.put(k, v);}
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public boolean Has(K k) {return map.containsKey(k);}
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public V GetByOrNull(K k) {return map.get(k);}
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public V GetByOr(K k, V or) {
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V v = map.get(k);
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if (v == null) {
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v = or;
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}
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return v;
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}
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public V GetByOrFail(GfoHashKeyFunc<K> func) {return GetByOrFail(func.ToHashKey());}
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public V GetByOrFail(K k) {
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V v = map.get(k);
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if (v == null) {
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throw ErrUtl.NewFmt("val not found; key={0}", k);
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}
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return v;
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}
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@Override public Iterator<Map.Entry<K, V>> iterator() {return map.entrySet().iterator();}
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@Override public void forEach(Consumer<? super Map.Entry<K, V>> action) {map.entrySet().forEach(action);}
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@Override public Spliterator<Map.Entry<K, V>> spliterator() {return map.entrySet().spliterator();}
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}
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