From 41a5531dc31a642623f0a7a766fbe9c256ba9247 Mon Sep 17 00:00:00 2001
From: dengjunjie <dengjunjie@hnkhzn.com>
Date: 星期二, 11 二月 2025 13:53:29 +0800
Subject: [PATCH] 优化WMS前端
---
项目代码/WMS/WIDESEA_WMSServer/WIDESEA_Core/Utilities/LambdaExtensions.cs | 183 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 183 insertions(+), 0 deletions(-)
diff --git "a/\351\241\271\347\233\256\344\273\243\347\240\201/WMS/WIDESEA_WMSServer/WIDESEA_Core/Utilities/LambdaExtensions.cs" "b/\351\241\271\347\233\256\344\273\243\347\240\201/WMS/WIDESEA_WMSServer/WIDESEA_Core/Utilities/LambdaExtensions.cs"
new file mode 100644
index 0000000..459408a
--- /dev/null
+++ "b/\351\241\271\347\233\256\344\273\243\347\240\201/WMS/WIDESEA_WMSServer/WIDESEA_Core/Utilities/LambdaExtensions.cs"
@@ -0,0 +1,183 @@
+锘縰sing System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+using WIDESEA_Core.Enums;
+using WIDESEA_Core.Helper;
+
+namespace WIDESEA_Core.Utilities
+{
+ public static class LambdaExtensions
+ {
+ /// <summary>
+ ///
+ /// </summary>
+ /// <typeparam name="T"></typeparam>
+ /// <param name="propertyName">瀛楁鍚�</param>
+ /// <param name="propertyValue">琛ㄨ揪寮忕殑鍊�</param>
+ /// <param name="expressionType">鍒涘缓琛ㄨ揪寮忕殑绫诲瀷,濡�:p=>p.propertyName != propertyValue
+ /// p=>p.propertyName.Contains(propertyValue)</param>
+ /// <returns></returns>
+ public static Expression<Func<T, bool>> CreateExpression<T>(this string propertyName, object propertyValue, LinqExpressionType expressionType)
+ {
+ return propertyName.CreateExpression<T>(propertyValue, null, expressionType);
+ }
+
+ /// <summary>
+ ///
+ /// </summary>
+ /// <typeparam name="T"></typeparam>
+ /// <param name="propertyName">瀛楁鍚�</param>
+ /// <param name="propertyValue">琛ㄨ揪寮忕殑鍊�</param>
+ /// <param name="expressionType">鍒涘缓琛ㄨ揪寮忕殑绫诲瀷,濡�:p=>p.propertyName != propertyValue
+ /// p=>p.propertyName.Contains(propertyValue)</param>
+ /// <returns></returns>
+ private static Expression<Func<T, bool>> CreateExpression<T>(
+ this string propertyName,
+ object propertyValue,
+ ParameterExpression parameter,
+ LinqExpressionType expressionType)
+ {
+ Type proType = null;
+ PropertyInfo propertyInfo = typeof(T).GetProperty(propertyName);
+ if (propertyInfo != null)
+ proType = propertyInfo.PropertyType;
+ else
+ {
+ propertyInfo = typeof(T).GetProperty(propertyName.FirstLetterToLower());
+ if (propertyInfo != null)
+ proType = propertyInfo.PropertyType;
+ else
+ {
+ propertyInfo = typeof(T).GetProperty(propertyName.FirstLetterToUpper());
+ if (propertyInfo != null)
+ proType = propertyInfo.PropertyType;
+ else
+ {
+ throw new Exception($"鏈壘鍒拌灞炴��,type:{typeof(T)}");
+ }
+ }
+ }
+ //鍒涘缓鑺傜偣鍙橀噺濡俻=>鐨勮妭鐐筽
+ // parameter ??= Expression.Parameter(typeof(T), "p");//鍒涘缓鍙傛暟p
+ parameter = parameter ?? Expression.Parameter(typeof(T), "p");
+
+ //鍒涘缓鑺傜偣鐨勫睘鎬=>p.name 灞炴�ame
+ MemberExpression memberProperty = Expression.PropertyOrField(parameter, propertyName);
+ if (expressionType == LinqExpressionType.In)
+ {
+ if (!(propertyValue is System.Collections.IList list) || list.Count == 0) throw new Exception("灞炴�у�肩被鍨嬩笉姝ｇ‘");
+
+ bool isStringValue = true;
+ List<object> objList = new List<object>();
+
+ if (proType.ToString() != "System.String")
+ {
+ isStringValue = false;
+ foreach (var value in list)
+ {
+ objList.Add(value.ToString().ChangeType(proType));
+ }
+ list = objList;
+ }
+
+ if (isStringValue)
+ {
+ //string 绫诲瀷鐨勫瓧娈碉紝濡傛灉鍊煎甫鏈�'鍗曞紩鍙�,EF浼氶粯璁ゅ彉鎴�''涓や釜鍗曞紩鍙�
+ MethodInfo method = typeof(System.Collections.IList).GetMethod("Contains");
+ //鍒涘缓闆嗗悎甯搁噺骞惰缃负甯搁噺鐨勫��
+ ConstantExpression constantCollection = Expression.Constant(list);
+ //鍒涘缓涓�涓〃绀鸿皟鐢ㄥ甫鍙傛暟鐨勬柟娉曠殑锛歯ew string[]{"1","a"}.Contains("a");
+ MethodCallExpression methodCall = Expression.Call(constantCollection, method, memberProperty);
+ return Expression.Lambda<Func<T, bool>>(methodCall, parameter);
+ }
+ //闈瀞tring瀛楁锛屾寜涓婇潰鏂瑰紡澶勭悊鎶ュ紓甯窷ull TypeMapping in Sql Tree
+ BinaryExpression body = null;
+ foreach (var value in list)
+ {
+ ConstantExpression constantExpression = Expression.Constant(value);
+ UnaryExpression unaryExpression = Expression.Convert(memberProperty, constantExpression.Type);
+
+ body = body == null
+ ? Expression.Equal(unaryExpression, constantExpression)
+ : Expression.OrElse(body, Expression.Equal(unaryExpression, constantExpression));
+ }
+ return Expression.Lambda<Func<T, bool>>(body, parameter);
+ }
+
+ // object value = propertyValue;
+ ConstantExpression constant = proType.ToString() == "System.String"
+ ? Expression.Constant(propertyValue) : Expression.Constant(propertyValue.ToString().ChangeType(proType));
+
+ // DateTime鍙�夋嫨浜嗘棩鏈熺殑鏃跺�欒嚜鍔ㄥ湪缁撴潫鏃ユ湡鍔犱竴澶╋紝淇DateTime绫诲瀷浣跨敤鏃ユ湡鍖洪棿鏌ヨ鏃犳硶鏌ヨ鍒扮粨鏉熸棩鏈熺殑闂
+ if ((proType == typeof(DateTime) || proType == typeof(DateTime?)) && expressionType == LinqExpressionType.LessThanOrEqual && propertyValue.ToString().Length == 10)
+ {
+ constant = Expression.Constant(Convert.ToDateTime(propertyValue.ToString()).AddDays(1));
+ }
+
+ UnaryExpression member = Expression.Convert(memberProperty, constant.Type);
+ Expression<Func<T, bool>> expression;
+ switch (expressionType)
+ {
+ //p=>p.propertyName == propertyValue
+ case LinqExpressionType.Equal:
+ expression = Expression.Lambda<Func<T, bool>>(Expression.Equal(member, constant), parameter);
+ break;
+ //p=>p.propertyName != propertyValue
+ case LinqExpressionType.NotEqual:
+ expression = Expression.Lambda<Func<T, bool>>(Expression.NotEqual(member, constant), parameter);
+ break;
+ // p => p.propertyName > propertyValue
+ case LinqExpressionType.GreaterThan:
+ expression = Expression.Lambda<Func<T, bool>>(Expression.GreaterThan(member, constant), parameter);
+ break;
+ // p => p.propertyName < propertyValue
+ case LinqExpressionType.LessThan:
+ expression = Expression.Lambda<Func<T, bool>>(Expression.LessThan(member, constant), parameter);
+ break;
+ // p => p.propertyName >= propertyValue
+ case LinqExpressionType.ThanOrEqual:
+ expression = Expression.Lambda<Func<T, bool>>(Expression.GreaterThanOrEqual(member, constant), parameter);
+ break;
+ // p => p.propertyName <= propertyValue
+ case LinqExpressionType.LessThanOrEqual:
+ expression = Expression.Lambda<Func<T, bool>>(Expression.LessThanOrEqual(member, constant), parameter);
+ break;
+ // p => p.propertyName.Contains(propertyValue)
+ // p => !p.propertyName.Contains(propertyValue)
+ case LinqExpressionType.Contains:
+ case LinqExpressionType.NotContains:
+ MethodInfo method = typeof(string).GetMethod("Contains", new[] { typeof(string) });
+ constant = Expression.Constant(propertyValue, typeof(string));
+ if (expressionType == LinqExpressionType.Contains)
+ {
+ expression = Expression.Lambda<Func<T, bool>>(Expression.Call(member, method, constant), parameter);
+ }
+ else
+ {
+ expression = Expression.Lambda<Func<T, bool>>(Expression.Not(Expression.Call(member, method, constant)), parameter);
+ }
+ break;
+ default:
+ // p => p.false
+ expression = False<T>();
+ break;
+ }
+ return expression;
+ }
+
+ /// <summary>
+ /// 鍒涘缓lambda琛ㄨ揪寮忥細p=>false
+ /// </summary>
+ /// <typeparam name="T"></typeparam>
+ /// <returns></returns>
+ public static Expression<Func<T, bool>> False<T>()
+ {
+
+ return p => false;
+ }
+ }
+}
--
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