87 lines
3.1 KiB
C#
87 lines
3.1 KiB
C#
using System.Reflection;
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using JNPF.DependencyInjection;
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namespace JNPF.Common.Extension;
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/// <summary>
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/// 字典辅助扩展方法.
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/// </summary>
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[SuppressSniffer]
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public static class DictionaryExtensions
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{
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/// <summary>
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/// 从字典中获取值，不存在则返回字典<typeparamref name="TValue"/>类型的默认值.
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/// </summary>
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/// <typeparam name="TKey">字典键类型.</typeparam>
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/// <typeparam name="TValue">字典值类型.</typeparam>
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/// <param name="dictionary">要操作的字典.</param>
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/// <param name="key">指定键名.</param>
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/// <returns>获取到的值.</returns>
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public static TValue? GetOrDefault<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, TKey key)
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{
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return dictionary.TryGetValue(key, out TValue value) ? value : default(TValue);
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}
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/// <summary>
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/// 获取指定键的值，不存在则按指定委托添加值.
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/// </summary>
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/// <typeparam name="TKey">字典键类型.</typeparam>
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/// <typeparam name="TValue">字典值类型.</typeparam>
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/// <param name="dictionary">要操作的字典.</param>
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/// <param name="key">指定键名.</param>
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/// <param name="addFunc">添加值的委托.</param>
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/// <returns>获取到的值.</returns>
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public static TValue GetOrAdd<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, TKey key, Func<TValue> addFunc)
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{
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if (dictionary.TryGetValue(key, out TValue value))
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{
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return value;
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}
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return dictionary[key] = addFunc();
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}
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/// <summary>
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/// 替换值.
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/// </summary>
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/// <param name="dictionary1"></param>
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/// <param name="dictionary2"></param>
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public static void ReplaceValue(this Dictionary<string, object> dictionary1, Dictionary<string, object> dictionary2)
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{
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foreach (var item in dictionary2.Keys)
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{
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if (dictionary1.ContainsKey(item))
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{
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dictionary1[item] = dictionary2[item];
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}
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}
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}
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private static Dictionary<string, string[]> dicProperties = new Dictionary<string, string[]>(StringComparer.OrdinalIgnoreCase);
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/// <summary>
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/// 字典转换成指定类型实例
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/// added by ly on 20230524
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/// </summary>
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/// <typeparam name="T">转换的目标类型</typeparam>
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/// <param name="dictionary">被转换的字典</param>
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/// <returns>转换后的目标类型对象实例</returns>
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public static T ToObject<T>(this Dictionary<String, Object> dictionary) where T : class, new()
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{
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var name = typeof(T).Name;
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T instance = new();
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if (!dicProperties.TryGetValue(name, out string[] properies))
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{
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properies = instance.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public).Select(p => p.Name).ToArray();
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dicProperties[name] = properies;
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}
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foreach (var pn in properies)
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{
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if (dictionary.ContainsKey(pn))
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{
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instance.PropertySetValue(pn, dictionary[pn]);
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}
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}
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return instance;
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}
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} |