57 lines
2.4 KiB
C#
57 lines
2.4 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq.Expressions;
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using System.Reflection;
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using System.Text;
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namespace SqlSugar
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{
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public class SqlSugarDynamicExpressionParser
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{
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public static LambdaExpression ParseLambda(ParameterExpression[] parameterExpressions, Type type, string sql, object[] objects)
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{
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if (StaticConfig.DynamicExpressionParserType == null)
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{
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Check.ExceptionEasy("Please at program startup assignment: StaticConfig DynamicExpressionParserType = typeof (DynamicExpressionParser); NUGET is required to install Dynamic.Core", "请在程序启动时赋值: StaticConfig.DynamicExpressionParserType = typeof(DynamicExpressionParser); 需要NUGET安装 Dynamic.Core");
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}
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if (StaticConfig.DynamicExpressionParsingConfig != null)
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{
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// 查找 ParseLambda 方法
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MethodInfo parseLambdaMethod = StaticConfig.DynamicExpressionParserType
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.GetMyMethod("ParseLambda", 5, StaticConfig.DynamicExpressionParsingConfig.GetType(), typeof(ParameterExpression[]), typeof(Type), typeof(string), typeof(object[]));
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if (parseLambdaMethod == null)
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{
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throw new InvalidOperationException("ParseLambda method not found in DynamicExpressionParserType.");
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}
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// 调用 ParseLambda 方法来解析 Lambda 表达式
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var lambda = (LambdaExpression)parseLambdaMethod.Invoke(null, new object[] { StaticConfig.DynamicExpressionParsingConfig, parameterExpressions, type, sql, objects });
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return lambda;
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}
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else
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{
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// 查找 ParseLambda 方法
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MethodInfo parseLambdaMethod = StaticConfig.DynamicExpressionParserType
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.GetMyMethod("ParseLambda",4, typeof(ParameterExpression[]), typeof(Type), typeof(string), typeof(object[]));
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if (parseLambdaMethod == null)
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{
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throw new InvalidOperationException("ParseLambda method not found in DynamicExpressionParserType.");
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}
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// 调用 ParseLambda 方法来解析 Lambda 表达式
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var lambda = (LambdaExpression)parseLambdaMethod.Invoke(null, new object[] { parameterExpressions, type, sql, objects });
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return lambda;
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}
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}
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}
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}
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