103 lines
3.1 KiB
C#
103 lines
3.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace SqlSugar
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{
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public class SubAnd:ISubOperation
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{
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public string Name
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{
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get { return "And"; }
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}
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public Expression Expression
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{
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get; set;
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}
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public int Sort
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{
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get
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{
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return 401;
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}
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}
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public ExpressionContext Context
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{
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get;set;
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}
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public bool HasWhere
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{
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get; set;
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}
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public string GetValue(Expression expression)
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{
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var exp = expression as MethodCallExpression;
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var argExp = exp.Arguments[0];
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var copyContext = this.Context;
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if (this.Context.JoinIndex > 0)
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{
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copyContext = this.Context.GetCopyContextWithMapping();
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copyContext.IsSingle = false;
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}
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var result = "AND " + SubTools.GetMethodValue(copyContext, argExp, ResolveExpressType.WhereMultiple);
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if (this.Context.JoinIndex > 0)
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{
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this.Context.Parameters.AddRange(copyContext.Parameters);
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this.Context.Index = copyContext.Index;
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this.Context.ParameterIndex = copyContext.ParameterIndex;
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}
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var regex = @"^AND (\@Const\d+) $";
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if (this.Context is OracleExpressionContext)
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{
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regex = @"^AND (\:Const\d+) $";
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}
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if (this.Context is DmExpressionContext)
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{
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regex = @"^AND (\:Const\d+) $";
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}
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if (Regex.IsMatch(result, regex))
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{
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var value = GetValue(result, regex);
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if (value is Expression)
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{
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var p = this.Context.Parameters.First(it => it.ParameterName == Regex.Match(result, regex).Groups[1].Value);
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result = "AND " + SubTools.GetMethodValue(Context, value as Expression, ResolveExpressType.WhereMultiple);
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argExp = value as Expression;
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this.Context.Parameters.Remove(p);
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}
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else
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{
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result = "AND " + value;
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return result;
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}
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}
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var selfParameterName = this.Context.GetTranslationColumnName((argExp as LambdaExpression).Parameters.First().Name) + UtilConstants.Dot;
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if (this.Context.JoinIndex == 0 && result.Contains(" FROM "))
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{
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this.Context.CurrentShortName = selfParameterName;
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}
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else if (this.Context.JoinIndex == 0)
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result = result.Replace(selfParameterName, SubTools.GetSubReplace(this.Context));
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return result;
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}
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private object GetValue(string result, string regex)
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{
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return this.Context.Parameters.First(it => it.ParameterName == Regex.Match(result, regex).Groups[1].Value).Value;
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}
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}
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}
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