forked from plusone/plusone-commons
添加 MapWrapper 的注释
parent
9300f02a51
commit
ebacc622da
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@ -27,12 +27,26 @@ import java.util.concurrent.ConcurrentHashMap;
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import java.util.function.Consumer;
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import java.util.function.Function;
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import javax.annotation.Nonnull;
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import javax.annotation.Nullable;
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import com.google.common.annotations.Beta;
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import xyz.zhouxy.plusone.commons.util.AssertTools;
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import xyz.zhouxy.plusone.commons.util.ConcurrentHashMapTools;
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/**
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* AbstractMapWrapper
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*
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* <p>
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* 包装了一个 {@link Map}。
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* 主要在于获取值时,如果 Key 不存在,是抛出异常;如果 Key 存在,则将 value 包装在 {@link Optional} 中 返回。
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* 此外可以定义 Key 和 Value 的检查规则。
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* </p>
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*
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* @author <a href="http://zhouxy.xyz:3000/ZhouXY108">ZhouXY</a>
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* @since 1.0
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*/
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@Beta
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public abstract class AbstractMapWrapper<K, V, T extends AbstractMapWrapper<K, V, T>> {
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@ -40,7 +54,9 @@ public abstract class AbstractMapWrapper<K, V, T extends AbstractMapWrapper<K, V
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private final Consumer<K> keyChecker;
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private final Consumer<V> valueChecker;
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protected AbstractMapWrapper(Map<K, V> map, @Nullable Consumer<K> keyChecker, @Nullable Consumer<V> valueChecker) {
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protected AbstractMapWrapper(Map<K, V> map,
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@Nullable Consumer<K> keyChecker,
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@Nullable Consumer<V> valueChecker) {
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this.map = map;
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this.keyChecker = keyChecker;
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this.valueChecker = valueChecker;
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@ -71,10 +87,9 @@ public abstract class AbstractMapWrapper<K, V, T extends AbstractMapWrapper<K, V
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* @return 可缺失的值
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* @throws IllegalArgumentException key 不存在时抛出。
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*/
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@Nonnull
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public Optional<V> get(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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AssertTools.checkArgument(this.map.containsKey(key), "Key does not exist");
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return Optional.ofNullable(this.map.get(key));
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}
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@ -180,8 +195,7 @@ public abstract class AbstractMapWrapper<K, V, T extends AbstractMapWrapper<K, V
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return false;
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if (getClass() != obj.getClass())
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return false;
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@SuppressWarnings("rawtypes")
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AbstractMapWrapper other = (AbstractMapWrapper) obj;
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AbstractMapWrapper<?, ?, ?> other = (AbstractMapWrapper<?, ?, ?>) obj;
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return Objects.equals(map, other.map);
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}
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@ -26,6 +26,16 @@ import java.util.function.Consumer;
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import com.google.common.annotations.Beta;
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/**
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* MapWrapper
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*
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* <p>
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* Map 包装器的默认实现
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* </p>
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*
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* @author <a href="http://zhouxy.xyz:3000/ZhouXY108">ZhouXY</a>
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* @since 0.1.0
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*/
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@Beta
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public final class MapWrapper<K, V> extends AbstractMapWrapper<K, V, MapWrapper<K, V>> {
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