优化代码。
parent
f4a12f1695
commit
13fc8e40b5
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@ -70,10 +70,25 @@ public abstract class AbstractMapWrapper<K, V, T extends AbstractMapWrapper<K, V
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* @throws IllegalArgumentException key 不存在时抛出。
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*/
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public Optional<V> get(K key) {
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if (this.map.containsKey(key)) {
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return Optional.ofNullable(this.map.get(key));
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if (!this.map.containsKey(key)) {
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throw new IllegalArgumentException("Key does not exist");
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}
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throw new IllegalArgumentException("Key does not exist");
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return Optional.ofNullable(this.map.get(key));
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}
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/**
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* 获取 {@code map} 中的值。如果 {@code key} 不存在,则抛出异常。
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*
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* @param key 键
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* @return 值
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* @throws IllegalArgumentException key 不存在时抛出。
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*/
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@Nullable
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public V getOrNull(K key) {
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if (!this.map.containsKey(key)) {
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throw new IllegalArgumentException("Key does not exist");
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}
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return this.map.get(key);
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}
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@SuppressWarnings("unchecked")
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@ -149,7 +164,7 @@ public abstract class AbstractMapWrapper<K, V, T extends AbstractMapWrapper<K, V
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return this.map.toString();
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}
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protected abstract static class Builder<K, V> {
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protected abstract static class Builder<K, V, T extends AbstractMapWrapper<K, V, T>> {
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protected final Map<K, V> map;
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protected Consumer<K> keyChecker;
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protected Consumer<V> valueChecker;
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@ -158,17 +173,17 @@ public abstract class AbstractMapWrapper<K, V, T extends AbstractMapWrapper<K, V
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this.map = map;
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}
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public Builder<K, V> keyChecker(@Nullable Consumer<K> keyChecker) {
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public Builder<K, V, T> keyChecker(@Nullable Consumer<K> keyChecker) {
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this.keyChecker = keyChecker;
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return this;
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}
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public Builder<K, V> valueChecker(@Nullable Consumer<V> valueChecker) {
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public Builder<K, V, T> valueChecker(@Nullable Consumer<V> valueChecker) {
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this.valueChecker = valueChecker;
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return this;
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}
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public Builder<K, V> put(K key, V value) {
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public Builder<K, V, T> put(K key, V value) {
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if (this.keyChecker != null) {
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this.keyChecker.accept(key);
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}
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@ -179,15 +194,15 @@ public abstract class AbstractMapWrapper<K, V, T extends AbstractMapWrapper<K, V
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return this;
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}
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public Builder<K, V> putAll(Map<? extends K, ? extends V> m) {
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public Builder<K, V, T> putAll(Map<? extends K, ? extends V> m) {
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for (Entry<? extends K, ? extends V> entry : m.entrySet()) {
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put(entry.getKey(), entry.getValue());
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}
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return this;
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}
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public abstract MapWrapper<K, V> build();
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public abstract T build();
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public abstract MapWrapper<K, V> buildUnmodifiableMap();
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public abstract T buildUnmodifiableMap();
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}
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}
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@ -61,7 +61,7 @@ public final class MapWrapper<K, V> extends AbstractMapWrapper<K, V, MapWrapper<
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return new Builder<>(new TreeMap<>(comparator));
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}
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public static final class Builder<K, V> extends AbstractMapWrapper.Builder<K, V> {
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public static final class Builder<K, V> extends AbstractMapWrapper.Builder<K, V, MapWrapper<K, V>> {
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private Builder(Map<K, V> map) {
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super(map);
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