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Update exp to sql

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This commit is contained in:
sunkaixuan
2025-11-04 09:03:42 +08:00
parent a88188383b
commit bb5d5a102a
1 changed files with 63 additions and 1 deletions
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64
Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve_Helper.cs
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@@ -607,6 +607,28 @@ namespace SqlSugar
exp = (exp as UnaryExpression).Operand;
}
var member = exp as MemberExpression;
// TODO: 我这里只是简单判断 exp1 是否是表达式
object sqlCondition = null;
// 如果是表达式，按表达条件走
if (exp is ConditionalExpression exp1)
{
// TODO: 这里需要处理从表达转换为 SQL，这里只是简单处理了
var model = new MethodCallExpressionModel() { Args = new List<MethodCallExpressionArgs>() };
member = exp1.Test as MemberExpression;
model.Args.Add(new MethodCallExpressionArgs() { MemberValue = exp1.Test, MemberName = exp1.Test });
model.Args.Add(new MethodCallExpressionArgs() { MemberValue = exp1.IfTrue, MemberName = exp1.IfTrue });
model.Args.Add(new MethodCallExpressionArgs() { MemberValue = exp1.IfFalse, MemberName = exp1.IfFalse });
model.Expression = exp;
// 一个简单的，只处理 PgSql 返回类型的方式
sqlCondition = IIF_Ex(model);
}
var it = member.Expression;
var type = it.Type;
var properyName = member.Member.Name;
@@ -615,7 +637,17 @@ namespace SqlSugar
{
this.Context.SingleTableNameSubqueryShortName = it.ToString();
}
sql = string.Format(sql, entity.Value, this.Context.GetTranslationColumnName(entity.TableName), entity.Key, eqName);
// TODO: 根据变化重新拼接
if (sqlCondition == null)
{
sql = string.Format(sql, entity.Value, this.Context.GetTranslationColumnName(entity.TableName), entity.Key, eqName);
}
else
{
sql = string.Format(sql, entity.Value, this.Context.GetTranslationColumnName(entity.TableName), entity.Key, sqlCondition);
}
if (entity.Parameter != null)
{
foreach (var item in entity.Parameter)
@@ -641,6 +673,36 @@ namespace SqlSugar
AppendMember(parameter, parameter.IsLeft, sql);
}
}
string IIF_Ex(MethodCallExpressionModel model)
{
var parameter = model.Args[0];
var parameter2 = model.Args[1];
var parameter3 = model.Args[2];
var ifTrue = parameter2.MemberName.ObjToString();
var ifFalse = parameter3.MemberName.ObjToString();
if (ifTrue == ifFalse)
{
return $" {parameter2.MemberName} ";
}
if (model.Parameters != null
&& model.Conext != null
&& ifTrue.StartsWith(model.Conext?.SqlParameterKeyWord)
&& ifFalse.StartsWith(model.Conext?.SqlParameterKeyWord))
{
var p2 = model.Parameters.Where(it => it.ParameterName != null).FirstOrDefault(it => it.ParameterName.Equals(ifTrue));
var p3 = model.Parameters.Where(it => it.ParameterName != null).FirstOrDefault(it => it.ParameterName.Equals(ifFalse));
if (p2 != null && p3 != null)
{
if (p2.Value?.Equals(p3.Value) == true)
{
model.Parameters.Remove(p3);
return $" {parameter2.MemberName} ";
}
}
}
return string.Format("( CASE WHEN {0} THEN N'{1}' ELSE N'{2}' END )", parameter.MemberName.ToString().ToLower(), parameter2.MemberName.ToString().Trim('\"'), parameter3.MemberName.ToString().Trim('\"'));
}
private object GetMethodValue(string name, MethodCallExpressionModel model)
{
model.Parameters = this.Context.Parameters;