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This commit is contained in:
sunkaixuan 2017-11-09 10:26:03 +08:00
parent 8484b4202d
commit 504b24be3d
9 changed files with 88 additions and 2 deletions
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6
Src/Asp.Net/SqlServerTest/Demos/1_Query.cs
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@ -284,6 +284,12 @@ namespace OrmTest.Demo
var getUnionAllList2 = db.UnionAll(db.Queryable<Student>(), db.Queryable<Student>()).ToList();
var test1 = db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id).Where(st=>st.CreateTime>SqlFunc.GetDate()).Select((st, sc) => SqlFunc.ToInt64(sc.Id)).ToList();
//var test2= db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id)
// .Where(st=>
// SqlFunc.IF(st.Id>1)
// .Return(st.Id)
// .ElseIF(st.Id==1)
// .Return(st.SchoolId).End(st.Id)==1).ToList();
}
public static void Page()
{

4
Src/Asp.Net/SqlServerTest/Demos/8_JoinSql.cs
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@ -40,6 +40,10 @@ namespace OrmTest.Demo
List<ConditionalModel> conModels = new List<ConditionalModel>();
conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.Equal, FieldValue = "1" });
conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.Like, FieldValue = "1" });
conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.IsNullOrEmpty });
conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.In,FieldValue="1,2,3" });
conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.NotIn, FieldValue = "1,2,3" });
conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.NoEqual, FieldValue = "1,2,3" });
var student = db.Queryable<Student>().Where(conModels).ToList();
}

8
Src/Asp.Net/SqlSugar/Enum/ConditionalType.cs
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@ -12,6 +12,12 @@ namespace SqlSugar
GreaterThan =2,
GreaterThanOrEqual = 3,
LessThan=4,
LessThanOrEqual = 5
LessThanOrEqual = 5,
In=6,
NotIn=7,
LikeLeft=8,
LikeRight=9,
NoEqual=10,
IsNullOrEmpty=11
}
}

28
Src/Asp.Net/SqlSugar/ExpressionsToSql/CaseWhen/CaseWhen.cs Normal file
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@ -0,0 +1,28 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
namespace SqlSugar
{
public class CaseWhen
{
public CaseThen ElseIF(bool condition)
{
return null;
}
public T End<T>(T defaultValue)
{
return default(T);
}
}
public class CaseThen
{
public CaseWhen Return<T>(T result)
{
return null;
}
}
}

2
Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ErrorMessage.cs
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@ -34,7 +34,7 @@ namespace SqlSugar
{
get
{
return ErrorMessage.GetThrowMessage("Connection open error . {0}", " 连接字符串出错了，实在找不到原因请先Google错误{0}.");
return ErrorMessage.GetThrowMessage("Connection open error . {0}", " 连接数据库过程中发生错误，检查服务器是否正常连接字符串是否正确，实在找不到原因请先Google错误信息：{0}.");
}
}
}

1
Src/Asp.Net/SqlSugar/ExpressionsToSql/DbMethods/SqlFunc.cs
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@ -116,5 +116,6 @@ namespace SqlSugar
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public static Subqueryable<T> Subqueryable<T>() where T:class,new(){ throw new NotSupportedException("Can only be used in expressions");}
public static CaseThen IF(bool condition) { throw new NotSupportedException("Can only be used in expressions"); }
}
}

12
Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs
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@ -55,6 +55,10 @@ namespace SqlSugar
}
return;
}
else if (IsIfElse(express, methodName)) {
List<Expression> expList = new List<Expression>();
return;
}
if (IsContainsArray(express, methodName, isValidNativeMethod))
{
methodName = "ContainsArray";
@ -70,6 +74,14 @@ namespace SqlSugar
}
}
private bool IsIfElse(MethodCallExpression express, string methodName)
{
if (methodName == "End"&& express.Object.Type==typeof(CaseWhen))
return true;
else
return false;
}
private void SqlFuncMethod(ExpressionParameter parameter, MethodCallExpression express, bool? isLeft)
{
CheckMethod(express);

28
Src/Asp.Net/SqlSugar/Infrastructure/ContextMethods.cs
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@ -330,6 +330,34 @@ namespace SqlSugar
builder.AppendFormat(temp, type, item.FieldName.ToSqlFilter(), "<=", parameterName);
parameters.Add(new SugarParameter(parameterName, item.FieldValue));
break;
case ConditionalType.In:
if (item.FieldValue == null) item.FieldValue = string.Empty;
var inValue1 = ("("+item.FieldValue.Split(',').ToJoinSqlInVals()+")");
builder.AppendFormat(temp, type, item.FieldName.ToSqlFilter(), "IN", inValue1);
parameters.Add(new SugarParameter(parameterName, item.FieldValue));
break;
case ConditionalType.NotIn:
if (item.FieldValue == null) item.FieldValue = string.Empty;
var inValue2 = ("(" + item.FieldValue.Split(',').ToJoinSqlInVals() + ")");
builder.AppendFormat(temp, type, item.FieldName.ToSqlFilter(), "NOT IN", inValue2);
parameters.Add(new SugarParameter(parameterName, item.FieldValue));
break;
case ConditionalType.LikeLeft:
builder.AppendFormat(temp, type, item.FieldName.ToSqlFilter(), "LIKE", parameterName);
parameters.Add(new SugarParameter(parameterName,item.FieldValue + "%"));
break;
case ConditionalType.LikeRight:
builder.AppendFormat(temp, type, item.FieldName.ToSqlFilter(), "LIKE", parameterName);
parameters.Add(new SugarParameter(parameterName, "%"+item.FieldValue));
break;
case ConditionalType.NoEqual:
builder.AppendFormat(temp, type, item.FieldName.ToSqlFilter(), "<>", parameterName);
parameters.Add(new SugarParameter(parameterName, item.FieldValue));
break;
case ConditionalType.IsNullOrEmpty:
builder.AppendFormat("{0} ({1}) OR ({2}) ", type, item.FieldName.ToSqlFilter()+" IS NULL ", item.FieldName.ToSqlFilter()+" = '' ");
parameters.Add(new SugarParameter(parameterName, item.FieldValue));
break;
default:
break;
}

1
Src/Asp.Net/SqlSugar/SqlSugar.csproj
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@ -80,6 +80,7 @@
<Compile Include="Entities\SlaveConnectionConfig.cs" />
<Compile Include="Enum\ConditionalType.cs" />
<Compile Include="Enum\DbType.cs" />
<Compile Include="ExpressionsToSql\CaseWhen\CaseWhen.cs" />
<Compile Include="ExpressionsToSql\Subquery\Items\ISubOperation.cs" />
<Compile Include="ExpressionsToSql\Subquery\Items\SubAnd.cs" />
<Compile Include="ExpressionsToSql\Subquery\Items\SubCount.cs" />