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- 兼容 SqlServer varchar/nvarchar 表达式解析，分别解析为：N'' 和 ''；

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28810
2019-11-20 03:34:55 +08:00
parent b338efc8a2
commit efdc7c8c5d
27 changed files with 440 additions and 86 deletions
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131
FreeSql/FreeSql.xml
View File

@ -2000,6 +2000,137 @@
<param name="parms"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.ExecuteReaderAsync(System.Func{System.Data.Common.DbDataReader,System.Threading.Tasks.Task},System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
<summary>
查询，若使用读写分离，查询【从库】条件cmdText.StartsWith("SELECT ")，否则查询【主库】
</summary>
<param name="readerHander"></param>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteReaderAsync(System.Func{System.Data.Common.DbDataReader,System.Threading.Tasks.Task},System.String,System.Object)">
<summary>
查询，ExecuteReaderAsync(dr => {}, "select * from user where age > @age", new { age = 25 })
</summary>
<param name="cmdText"></param>
<param name="parms"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteArrayAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
<summary>
查询
</summary>
<param name="cmdText"></param>
<param name="cmdParms"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteArrayAsync(System.String,System.Object)">
<summary>
查询，ExecuteArrayAsync("select * from user where age > @age", new { age = 25 })
</summary>
<param name="cmdText"></param>
<param name="parms"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.ExecuteDataSetAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
<summary>
查询
</summary>
<param name="cmdText"></param>
<param name="cmdParms"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteDataSetAsync(System.String,System.Object)">
<summary>
查询，ExecuteDataSetAsync("select * from user where age > @age; select 2", new { age = 25 })
</summary>
<param name="cmdText"></param>
<param name="parms"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.ExecuteDataTableAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
<summary>
查询
</summary>
<param name="cmdText"></param>
<param name="cmdParms"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteDataTableAsync(System.String,System.Object)">
<summary>
查询，ExecuteDataTableAsync("select * from user where age > @age", new { age = 25 })
</summary>
<param name="cmdText"></param>
<param name="parms"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.ExecuteNonQueryAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
<summary>
在【主库】执行
</summary>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteNonQueryAsync(System.String,System.Object)">
<summary>
在【主库】执行，ExecuteNonQueryAsync("delete from user where age > @age", new { age = 25 })
</summary>
<param name="cmdText"></param>
<param name="parms"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.ExecuteScalarAsync(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
<summary>
在【主库】执行
</summary>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
</member>
<member name="M:FreeSql.IAdo.ExecuteScalarAsync(System.String,System.Object)">
<summary>
在【主库】执行，ExecuteScalarAsync("select 1 from user where age > @age", new { age = 25 })
</summary>
<param name="cmdText"></param>
<param name="parms"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.QueryAsync``1(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
<summary>
执行SQL返回对象集合，QueryAsync&lt;User&gt;("select * from user where age > @age", new SqlParameter { ParameterName = "age", Value = 25 })
</summary>
<typeparam name="T"></typeparam>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.QueryAsync``1(System.String,System.Object)">
<summary>
执行SQL返回对象集合，QueryAsync&lt;User&gt;("select * from user where age > @age", new { age = 25 })
</summary>
<typeparam name="T"></typeparam>
<param name="cmdText"></param>
<param name="parms"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.QueryAsync``2(System.Data.CommandType,System.String,System.Data.Common.DbParameter[])">
<summary>
执行SQL返回对象集合，Query&lt;User&gt;("select * from user where age > @age; select * from address", new SqlParameter { ParameterName = "age", Value = 25 })
</summary>
<typeparam name="T1"></typeparam>
<param name="cmdType"></param>
<param name="cmdText"></param>
<param name="cmdParms"></param>
<returns></returns>
</member>
<member name="M:FreeSql.IAdo.QueryAsync``2(System.String,System.Object)">
<summary>
执行SQL返回对象集合，Query&lt;User&gt;("select * from user where age > @age; select * from address", new { age = 25 })
</summary>
<typeparam name="T1"></typeparam>
<param name="cmdText"></param>
<param name="parms"></param>
<returns></returns>
</member>
<member name="P:FreeSql.IAop.ParseExpression">
<summary>
可自定义解析表达式

54
FreeSql/Internal/CommonExpression.cs
View File

@ -332,7 +332,7 @@ namespace FreeSql.Internal
var sql = ExpressionLambdaToSql(exp, new ExpTSC { _tables = _tables, _selectColumnMap = _selectColumnMap, getSelectGroupingMapString = getSelectGroupingMapString, tbtype = SelectTableInfoType.From, isQuoteName = true, isDisableDiyParse = false, style = ExpressionStyle.Where, currentTable = table });
var isBool = exp.Type.NullableTypeOrThis() == typeof(bool);
if (exp.NodeType == ExpressionType.MemberAccess && isBool && sql.Contains(" IS ") == false && sql.Contains(" = ") == false)
return $"{sql} = {formatSql(true, null)}";
return $"{sql} = {formatSql(true, null, null)}";
if (isBool)
return GetBoolString(sql);
return sql;
@ -343,7 +343,7 @@ namespace FreeSql.Internal
var sql = ExpressionLambdaToSql(exp, new ExpTSC { _tables = _tables, getSelectGroupingMapString = getSelectGroupingMapString, tbtype = SelectTableInfoType.From, isQuoteName = true, isDisableDiyParse = false, style = ExpressionStyle.Where, whereCascadeExpression = whereCascadeExpression });
var isBool = exp.Type.NullableTypeOrThis() == typeof(bool);
if (exp.NodeType == ExpressionType.MemberAccess && isBool && sql.Contains(" IS ") == false && sql.Contains(" = ") == false)
return $"{sql} = {formatSql(true, null)}";
return $"{sql} = {formatSql(true, null, null)}";
if (isBool)
return GetBoolString(sql);
return sql;
@ -355,7 +355,7 @@ namespace FreeSql.Internal
var sql = ExpressionLambdaToSql(exp, new ExpTSC { _tables = _tables, getSelectGroupingMapString = getSelectGroupingMapString, tbtype = tbtype, isQuoteName = true, isDisableDiyParse = false, style = ExpressionStyle.Where, whereCascadeExpression = whereCascadeExpression });
var isBool = exp.Type.NullableTypeOrThis() == typeof(bool);
if (exp.NodeType == ExpressionType.MemberAccess && isBool && sql.Contains(" IS ") == false && sql.Contains(" = ") == false)
sql = $"{sql} = {formatSql(true, null)}";
sql = $"{sql} = {formatSql(true, null, null)}";
if (isBool)
sql = GetBoolString(sql);
@ -433,7 +433,7 @@ namespace FreeSql.Internal
{
var enumType = leftMapColumn.CsType.NullableTypeOrThis();
if (enumType.IsEnum)
right = formatSql(Enum.Parse(enumType, right.StartsWith("N'") ? right.Substring(1).Trim('\'') : right.Trim('\'')), leftMapColumn.Attribute.MapType);
right = formatSql(Enum.Parse(enumType, right.StartsWith("N'") ? right.Substring(1).Trim('\'') : right.Trim('\'')), leftMapColumn.Attribute.MapType, leftMapColumn);
}
if (leftMapColumn == null)
{
@ -447,7 +447,7 @@ namespace FreeSql.Internal
{
var enumType = rightMapColumn.CsType.NullableTypeOrThis();
if (enumType.IsEnum)
left = formatSql(Enum.Parse(enumType, left.StartsWith("N'") ? left.Substring(1).Trim('\'') : left.Trim('\'')), rightMapColumn.Attribute.MapType);
left = formatSql(Enum.Parse(enumType, left.StartsWith("N'") ? left.Substring(1).Trim('\'') : left.Trim('\'')), rightMapColumn.Attribute.MapType, rightMapColumn);
}
}
}
@ -455,8 +455,8 @@ namespace FreeSql.Internal
{
if (oper == "=")
{
var trueVal = formatSql(true, null);
var falseVal = formatSql(false, null);
var trueVal = formatSql(true, null, null);
var falseVal = formatSql(false, null, null);
if (left == trueVal) return right;
else if (left == falseVal) return $"not({right})";
else if (right == trueVal) return left;
@ -464,15 +464,14 @@ namespace FreeSql.Internal
}
else if (oper == "<>")
{
var trueVal = formatSql(true, null);
var falseVal = formatSql(false, null);
var trueVal = formatSql(true, null, null);
var falseVal = formatSql(false, null, null);
if (left == trueVal) return $"not({right})";
else if (left == falseVal) return right;
else if (right == trueVal) return $"not({left})";
else if (right == falseVal) return left;
}
}
if (left == "NULL")
{
var tmp = right;
@ -488,9 +487,9 @@ namespace FreeSql.Internal
break;
case "AND":
case "OR":
if (leftMapColumn != null) left = $"{left} = {formatSql(true, null)}";
if (leftMapColumn != null) left = $"{left} = {formatSql(true, null, null)}";
else left = GetBoolString(left);
if (rightMapColumn != null) right = $"{right} = {formatSql(true, null)}";
if (rightMapColumn != null) right = $"{right} = {formatSql(true, null, null)}";
else right = GetBoolString(right);
break;
}
@ -517,7 +516,7 @@ namespace FreeSql.Internal
if (notBody.Contains(" IS NOT NULL")) return notBody.Replace(" IS NOT NULL", " IS NULL");
if (notBody.Contains("=")) return notBody.Replace("=", "!=");
if (notBody.Contains("!=")) return notBody.Replace("!=", "=");
return $"{notBody} = {formatSql(false, null)}";
return $"{notBody} = {formatSql(false, null, null)}";
}
return $"not({ExpressionLambdaToSql(notExp, tsc)})";
case ExpressionType.Quote: return ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, tsc);
@ -529,7 +528,7 @@ namespace FreeSql.Internal
return ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, tsc);
case ExpressionType.Negate:
case ExpressionType.NegateChecked: return "-" + ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, tsc);
case ExpressionType.Constant: return formatSql((exp as ConstantExpression)?.Value, tsc.mapType);
case ExpressionType.Constant: return formatSql((exp as ConstantExpression)?.Value, tsc.mapType, tsc.mapColumnTmp);
case ExpressionType.Conditional:
var condExp = exp as ConditionalExpression;
return $"case when {ExpressionLambdaToSql(condExp.Test, tsc)} then {ExpressionLambdaToSql(condExp.IfTrue, tsc)} else {ExpressionLambdaToSql(condExp.IfFalse, tsc)} end";
@ -855,7 +854,7 @@ namespace FreeSql.Internal
//}
other3Exp = ExpressionLambdaToSqlOther(exp3, tsc);
if (string.IsNullOrEmpty(other3Exp) == false) return other3Exp;
if (exp3.IsParameter() == false) return formatSql(Expression.Lambda(exp3).Compile().DynamicInvoke(), tsc.mapType);
if (exp3.IsParameter() == false) return formatSql(Expression.Lambda(exp3).Compile().DynamicInvoke(), tsc.mapType, tsc.mapColumnTmp);
throw new Exception($"未实现函数表达式 {exp3} 解析");
case ExpressionType.Parameter:
case ExpressionType.MemberAccess:
@ -915,7 +914,7 @@ namespace FreeSql.Internal
}
break;
}
if (expStack.First().NodeType != ExpressionType.Parameter) return formatSql(Expression.Lambda(exp).Compile().DynamicInvoke(), tsc.mapType);
if (expStack.First().NodeType != ExpressionType.Parameter) return formatSql(Expression.Lambda(exp).Compile().DynamicInvoke(), tsc.mapType, tsc.mapColumnTmp);
if (callExp != null) return ExpressionLambdaToSql(callExp, tsc);
if (tsc.getSelectGroupingMapString != null && expStack.First().Type.FullName.StartsWith("FreeSql.ISelectGroupingAggregate`"))
{
@ -942,7 +941,7 @@ namespace FreeSql.Internal
tsc._selectColumnMap.Add(new SelectColumnInfo { Table = null, Column = curcol });
var name = curcol.Attribute.Name;
if (tsc.isQuoteName) name = _common.QuoteSqlName(name);
tsc.mapTypeTmp = curcol.Attribute.MapType == curcol.CsType ? null : curcol.Attribute.MapType;
tsc.SetMapColumnTmp(curcol);
if (string.IsNullOrEmpty(tsc.alias001)) return name;
return $"{tsc.alias001}.{name}";
}
@ -1104,7 +1103,7 @@ namespace FreeSql.Internal
return "";
}
name2 = col2.Attribute.Name;
tsc.mapTypeTmp = col2.Attribute.MapType == col2.CsType ? null : col2.Attribute.MapType;
tsc.SetMapColumnTmp(col2);
break;
case ExpressionType.Call: break;
}
@ -1126,7 +1125,7 @@ namespace FreeSql.Internal
}
if (dicExpressionOperator.TryGetValue(expBinary.NodeType, out var tryoper) == false)
{
if (exp.IsParameter() == false) return formatSql(Expression.Lambda(exp).Compile().DynamicInvoke(), tsc.mapType);
if (exp.IsParameter() == false) return formatSql(Expression.Lambda(exp).Compile().DynamicInvoke(), tsc.mapType, tsc.mapColumnTmp);
return "";
}
return ExpressionBinary(tryoper, expBinary.Left, expBinary.Right, tsc);
@ -1157,13 +1156,24 @@ namespace FreeSql.Internal
public ExpressionStyle style { get; set; }
public Type mapType { get; set; }
public Type mapTypeTmp { get; set; }
public ColumnInfo mapColumnTmp { get; set; }
public TableInfo currentTable { get; set; }
public List<LambdaExpression> whereCascadeExpression { get; set; }
public string alias001 { get; set; } //单表字段的表别名
public void SetMapTypeTmp(Type newValue)
public ExpTSC SetMapColumnTmp(ColumnInfo col)
{
this.mapTypeTmp = null;
if (col == null)
{
this.mapTypeTmp = null;
this.mapColumnTmp = null;
}
else
{
this.mapTypeTmp = col.Attribute.MapType == col.CsType ? null : col.Attribute.MapType;
this.mapColumnTmp = col;
}
return this;
}
public Type SetMapTypeReturnOld(Type newValue)
{
@ -1263,6 +1273,6 @@ namespace FreeSql.Internal
}
}
public string formatSql(object obj, Type mapType) => string.Concat(_ado.AddslashesProcessParam(obj, mapType));
public string formatSql(object obj, Type mapType, ColumnInfo mapColumn) => string.Concat(_ado.AddslashesProcessParam(obj, mapType, mapColumn));
}
}

7
FreeSql/Internal/CommonProvider/AdoProvider/AdoProviderUtils.cs
View File

@ -1,4 +1,5 @@
using System;
using FreeSql.Internal.Model;
using System;
using System.Collections.Concurrent;
using System.Text.RegularExpressions;
@ -6,7 +7,7 @@ namespace FreeSql.Internal.CommonProvider
{
partial class AdoProvider
{
public abstract object AddslashesProcessParam(object param, Type mapType);
public abstract object AddslashesProcessParam(object param, Type mapType, ColumnInfo mapColumn);
public string Addslashes(string filter, params object[] parms)
{
if (filter == null || parms == null) return string.Empty;
@ -17,7 +18,7 @@ namespace FreeSql.Internal.CommonProvider
if (parms[a] == null)
filter = _dicAddslashesReplaceIsNull.GetOrAdd(a, b => new Regex(@"\s*(=|IN)\s*\{" + b + @"\}", RegexOptions.IgnoreCase | RegexOptions.Compiled))
.Replace(filter, $" IS {{{a}}}");
nparms[a] = AddslashesProcessParam(parms[a], null);
nparms[a] = AddslashesProcessParam(parms[a], null, null);
}
try { string ret = string.Format(filter, nparms); return ret; } catch { return filter; }
}