lsm/SqlSugar
1
0
Fork 0
mirror of https://gitee.com/dotnetchina/SqlSugar.git synced 2025-09-18 17:48:11 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Optimization analysis

Browse Source
This commit is contained in:
sunkaixuan
2017-08-13 21:34:29 +08:00
parent 9675f05e81
commit b22f5292e7
2 changed files with 142 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
Src/Asp.Net/SqlServerTest/UnitTest/ExpressionTest/Method.cs
View File

@@ -33,6 +33,8 @@ namespace OrmTest.UnitTest
MappingColumn();
IIF();
IIF2();
IIF3();
IIF4();
#region StringIsNullOrEmpty
HasValue();
HasNumber();
@@ -704,6 +706,38 @@ namespace OrmTest.UnitTest
new SugarParameter("@Const3",1)
}, "IIF2 error");
}
private void IIF3()
{
Expression<Func<Student, bool>> exp = it => SqlFunc.IIF(SqlFunc.Contains(it.Name, "a"), true, false) == true;
SqlServerExpressionContext expContext = new SqlServerExpressionContext();
expContext.Resolve(exp, ResolveExpressType.WhereSingle);
var value = expContext.Result.GetString();
var pars = expContext.Parameters;
base.Check(value, pars, "(( CASE WHEN ([Name] like '%'+@MethodConst0+'%') THEN @MethodConst1 ELSE @MethodConst2 END ) = @Const3 )", new List<SugarParameter>()
{
new SugarParameter("@MethodConst0","a"),
new SugarParameter("@MethodConst1",true),
new SugarParameter("@MethodConst2",false),
new SugarParameter("@Const3",true)
}, "IIF3 error");
}
private void IIF4()
{
//Expression<Func<DataTestInfo2, bool>> exp = it => SqlFunc.IIF(true, it.Bool1, it.Bool2) == true;
//SqlServerExpressionContext expContext = new SqlServerExpressionContext();
//expContext.Resolve(exp, ResolveExpressType.WhereSingle);
//var value = expContext.Result.GetString();
//var pars = expContext.Parameters;
//base.Check(value, pars, "(( CASE WHEN ([Name] like '%'+@MethodConst0+'%') THEN @MethodConst1 ELSE @MethodConst2 END ) = @Const3 )", new List<SugarParameter>()
//{
// new SugarParameter("@MethodConst0","a"),
// new SugarParameter("@MethodConst1",true),
// new SugarParameter("@MethodConst2",false),
// new SugarParameter("@Const3",true)
//}, "IIF4 error");
}
}
}

121
Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs
View File

@@ -81,7 +81,6 @@ namespace SqlSugar
break;
}
}
private void NativeExtensionMethod(ExpressionParameter parameter, MethodCallExpression express, bool? isLeft, string name, List<MethodCallExpressionArgs> appendArgs = null)
{
var method = express.Method;
@@ -121,15 +120,7 @@ namespace SqlSugar
{
foreach (var item in args)
{
var isBinaryExpression = item is BinaryExpression || item is MethodCallExpression;
if (isBinaryExpression)
{
model.Args.Add(GetMethodCallArgs(parameter, item));
}
else
{
Default(parameter, model, item);
}
AppendItem(parameter, name, args, model, item);
}
if (appendArgs != null)
{
@@ -142,15 +133,7 @@ namespace SqlSugar
{
foreach (var item in args)
{
var isBinaryExpression = item is BinaryExpression || item is MethodCallExpression;
if (isBinaryExpression)
{
model.Args.Add(GetMethodCallArgs(parameter, item));
}
else
{
Default(parameter, model, item);
}
AppendItem(parameter, name, args, model, item);
}
if (appendArgs != null)
{
@@ -159,7 +142,105 @@ namespace SqlSugar
var methodValue = GetMdthodValue(name, model);
base.AppendValue(parameter, isLeft, methodValue);
}
private void Default(ExpressionParameter parameter, MethodCallExpressionModel model, Expression item)
private void AppendItem(ExpressionParameter parameter, string name, IEnumerable<Expression> args, MethodCallExpressionModel model, Expression item)
{
var isBinaryExpression = item is BinaryExpression || item is MethodCallExpression;
var isIFFBoolMember = name == "IIF" && (args.Last() is MemberExpression) && (args.Last() as MemberExpression).Type == PubConst.BoolType;
var isIFFUnary = name == "IIF" && (args.Last() is UnaryExpression) && (args.Last() as UnaryExpression).Operand.Type == PubConst.BoolType;
var isIFFBoolBinary = name == "IIF" && (args.Last() is BinaryExpression) && (args.Last() as BinaryExpression).Type == PubConst.BoolType;
if (isIFFUnary && item != args.First())
{
AppendModelByIIFMember(parameter, model, (item as UnaryExpression).Operand);
}
else if (isIFFBoolMember && item != args.First())
{
AppendModelByIIFMember(parameter, model, item);
}
else if (isIFFBoolBinary && item != args.First())
{
AppendModelByIIFBinary(parameter, model, item);
}
else if (isBinaryExpression)
{
model.Args.Add(GetMethodCallArgs(parameter, item));
}
else
{
AppendModel(parameter, model, item);
}
}
private void AppendModelByIIFMember(ExpressionParameter parameter, MethodCallExpressionModel model, Expression item)
{
parameter.CommonTempData = CommonTempDataType.Result;
base.Expression = item;
base.Start();
var methodCallExpressionArgs = new MethodCallExpressionArgs()
{
IsMember = parameter.ChildExpression is MemberExpression,
MemberName = parameter.CommonTempData
};
if (methodCallExpressionArgs.IsMember && parameter.ChildExpression != null && parameter.ChildExpression.ToString() == "DateTime.Now")
{
methodCallExpressionArgs.IsMember = false;
}
var value = methodCallExpressionArgs.MemberName;
if (methodCallExpressionArgs.IsMember)
{
var childExpression = parameter.ChildExpression as MemberExpression;
if (childExpression.Expression != null && childExpression.Expression is ConstantExpression)
{
methodCallExpressionArgs.IsMember = false;
}
}
if (methodCallExpressionArgs.IsMember == false)
{
var parameterName = this.Context.SqlParameterKeyWord + ExpressionConst.MethodConst + this.Context.ParameterIndex;
this.Context.ParameterIndex++;
methodCallExpressionArgs.MemberName = parameterName;
methodCallExpressionArgs.MemberValue = value;
this.Context.Parameters.Add(new SugarParameter(parameterName, value));
}
model.Args.Add(methodCallExpressionArgs);
parameter.ChildExpression = null;
}
private void AppendModelByIIFBinary(ExpressionParameter parameter, MethodCallExpressionModel model, Expression item)
{
parameter.CommonTempData = CommonTempDataType.Result;
base.Expression = item;
base.Start();
var methodCallExpressionArgs = new MethodCallExpressionArgs()
{
IsMember = parameter.ChildExpression is MemberExpression,
MemberName = parameter.CommonTempData
};
if (methodCallExpressionArgs.IsMember && parameter.ChildExpression != null && parameter.ChildExpression.ToString() == "DateTime.Now")
{
methodCallExpressionArgs.IsMember = false;
}
var value = methodCallExpressionArgs.MemberName;
if (methodCallExpressionArgs.IsMember)
{
var childExpression = parameter.ChildExpression as MemberExpression;
if (childExpression.Expression != null && childExpression.Expression is ConstantExpression)
{
methodCallExpressionArgs.IsMember = false;
}
}
if (methodCallExpressionArgs.IsMember == false)
{
var parameterName = this.Context.SqlParameterKeyWord + ExpressionConst.MethodConst + this.Context.ParameterIndex;
this.Context.ParameterIndex++;
methodCallExpressionArgs.MemberName = parameterName;
methodCallExpressionArgs.MemberValue = value;
this.Context.Parameters.Add(new SugarParameter(parameterName, value));
}
model.Args.Add(methodCallExpressionArgs);
parameter.ChildExpression = null;
}
private void AppendModel(ExpressionParameter parameter, MethodCallExpressionModel model, Expression item)
{
parameter.CommonTempData = CommonTempDataType.Result;
base.Expression = item;