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增加 int.Parse Guid.Parse 系列转换、Guid.NewGuid、new Random.NextDouble 等表达式函数解析

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This commit is contained in:
28810
2019-03-18 12:16:09 +08:00
parent e23ae9d7ac
commit 8372f96ab1
13 changed files with 537 additions and 70 deletions
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11
FreeSql/Internal/CommonExpression.cs
View File

@@ -215,7 +215,10 @@ namespace FreeSql.Internal {
case ExpressionType.Not: return $"not({ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName)})";
case ExpressionType.Quote: return ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
case ExpressionType.Lambda: return ExpressionLambdaToSql((exp as LambdaExpression)?.Body, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
case ExpressionType.Convert: return ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
case ExpressionType.Convert:
var othercExp = ExpressionLambdaToSqlOther(exp, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
if (string.IsNullOrEmpty(othercExp) == false) return othercExp;
return ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
case ExpressionType.Negate:
case ExpressionType.NegateChecked: return "-" + ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
case ExpressionType.Constant: return _common.FormatSql("{0}", (exp as ConstantExpression)?.Value);
@@ -461,7 +464,7 @@ namespace FreeSql.Internal {
MethodCallExpression callExp = null;
var exp2 = exp4.Expression;
while (true) {
switch(exp2.NodeType) {
switch(exp2?.NodeType) {
case ExpressionType.Constant:
expStack.Push(exp2);
break;
@@ -514,6 +517,10 @@ namespace FreeSql.Internal {
finds = _tables.Where(a2 => (isa && a2.Parameter != null || !isa && a2.Parameter == null) &&
a2.Table.Type == tbtmp.Type && a2.Alias == alias && a2.Alias.StartsWith($"{navdot[0].Alias}__") &&
(isthis && a2.Type != SelectTableInfoType.Parent || !isthis && a2.Type == SelectTableInfoType.Parent)).ToArray();
if (finds.Length == 0)
finds = _tables.Where(a2 =>
a2.Table.Type == tbtmp.Type && a2.Alias == alias && a2.Alias.StartsWith($"{navdot[0].Alias}__") &&
(isthis && a2.Type != SelectTableInfoType.Parent || !isthis && a2.Type == SelectTableInfoType.Parent)).ToArray();
} else {
finds = _tables.Where(a2 => (isa && a2.Parameter != null || isa && a2.Parameter == null) &&
a2.Table.Type == tbtmp.Type && a2.Alias == alias).ToArray();

59
FreeSql/MySql/MySqlExpression.cs
View File

@@ -15,8 +15,67 @@ namespace FreeSql.MySql {
internal override string ExpressionLambdaToSqlOther(Expression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName) {
Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
switch (exp.NodeType) {
case ExpressionType.Convert:
var operandExp = (exp as UnaryExpression)?.Operand;
switch (exp.Type.NullableTypeOrThis().ToString()) {
case "System.Boolean": return $"({getExp(operandExp)} not in ('0','false'))";
case "System.Byte": return $"cast({getExp(operandExp)} as unsigned)";
case "System.Char": return $"substr(cast({getExp(operandExp)} as char), 1, 1)";
case "System.DateTime": return $"cast({getExp(operandExp)} as datetime)";
case "System.Decimal": return $"cast({getExp(operandExp)} as decimal(36,18))";
case "System.Double": return $"cast({getExp(operandExp)} as decimal(32,16))";
case "System.Int16":
case "System.Int32":
case "System.Int64":
case "System.SByte": return $"cast({getExp(operandExp)} as signed)";
case "System.Single": return $"cast({getExp(operandExp)} as decimal(14,7))";
case "System.String": return $"cast({getExp(operandExp)} as char)";
case "System.UInt16":
case "System.UInt32":
case "System.UInt64": return $"cast({getExp(operandExp)} as unsigned)";
case "System.Guid": return $"substr(cast({getExp(operandExp)} as char), 1, 36)";
}
break;
case ExpressionType.Call:
var callExp = exp as MethodCallExpression;
switch (callExp.Method.Name) {
case "Parse":
case "TryParse":
switch (callExp.Method.DeclaringType.NullableTypeOrThis().ToString()) {
case "System.Boolean": return $"({getExp(callExp.Arguments[0])} not in ('0','false'))";
case "System.Byte": return $"cast({getExp(callExp.Arguments[0])} as unsigned)";
case "System.Char": return $"substr(cast({getExp(callExp.Arguments[0])} as char), 1, 1)";
case "System.DateTime": return $"cast({getExp(callExp.Arguments[0])} as datetime)";
case "System.Decimal": return $"cast({getExp(callExp.Arguments[0])} as decimal(36,18))";
case "System.Double": return $"cast({getExp(callExp.Arguments[0])} as decimal(32,16))";
case "System.Int16":
case "System.Int32":
case "System.Int64":
case "System.SByte": return $"cast({getExp(callExp.Arguments[0])} as signed)";
case "System.Single": return $"cast({getExp(callExp.Arguments[0])} as decimal(14,7))";
case "System.UInt16":
case "System.UInt32":
case "System.UInt64": return $"cast({getExp(callExp.Arguments[0])} as unsigned)";
case "System.Guid": return $"substr(cast({getExp(callExp.Arguments[0])} as char), 1, 36)";
}
break;
case "NewGuid":
break;
case "Next":
if (callExp.Object?.Type == typeof(Random)) return "cast(rand()*1000000000 as signed)";
break;
case "NextDouble":
if (callExp.Object?.Type == typeof(Random)) return "rand()";
break;
case "Random":
if (callExp.Method.DeclaringType.IsNumberType()) return "rand()";
break;
case "ToString":
if (callExp.Object != null) return $"cast({getExp(callExp.Object)} as char)";
break;
}
var objExp = callExp.Object;
var objType = objExp?.Type;
if (objType?.FullName == "System.Byte[]") return null;

59
FreeSql/Oracle/OracleExpression.cs
View File

@@ -15,8 +15,67 @@ namespace FreeSql.Oracle {
internal override string ExpressionLambdaToSqlOther(Expression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName) {
Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
switch (exp.NodeType) {
case ExpressionType.Convert:
var operandExp = (exp as UnaryExpression)?.Operand;
switch (exp.Type.NullableTypeOrThis().ToString()) {
//case "System.Boolean": return $"({getExp(operandExp)} not in ('0','false'))";
case "System.Byte": return $"cast({getExp(operandExp)} as number)";
case "System.Char": return $"substr(to_char({getExp(operandExp)}), 1, 1)";
case "System.DateTime": return $"to_timestamp({getExp(operandExp)},'YYYY-MM-DD HH24:MI:SS.FF6')";
case "System.Decimal": return $"cast({getExp(operandExp)} as number)";
case "System.Double": return $"cast({getExp(operandExp)} as number)";
case "System.Int16":
case "System.Int32":
case "System.Int64":
case "System.SByte": return $"cast({getExp(operandExp)} as number)";
case "System.Single": return $"cast({getExp(operandExp)} as number)";
case "System.String": return $"to_char({getExp(operandExp)})";
case "System.UInt16":
case "System.UInt32":
case "System.UInt64": return $"cast({getExp(operandExp)} as number)";
case "System.Guid": return $"substr(to_char({getExp(operandExp)}), 1, 36)";
}
break;
case ExpressionType.Call:
var callExp = exp as MethodCallExpression;
switch (callExp.Method.Name) {
case "Parse":
case "TryParse":
switch (callExp.Method.DeclaringType.NullableTypeOrThis().ToString()) {
//case "System.Boolean": return $"({getExp(callExp.Arguments[0])} not in ('0','false'))";
case "System.Byte": return $"cast({getExp(callExp.Arguments[0])} as number)";
case "System.Char": return $"substr(to_char({getExp(callExp.Arguments[0])}), 1, 1)";
case "System.DateTime": return $"to_timestamp({getExp(callExp.Arguments[0])},'YYYY-MM-DD HH24:MI:SS.FF6')";
case "System.Decimal": return $"cast({getExp(callExp.Arguments[0])} as number)";
case "System.Double": return $"cast({getExp(callExp.Arguments[0])} as number)";
case "System.Int16":
case "System.Int32":
case "System.Int64":
case "System.SByte": return $"cast({getExp(callExp.Arguments[0])} as number)";
case "System.Single": return $"cast({getExp(callExp.Arguments[0])} as number)";
case "System.UInt16":
case "System.UInt32":
case "System.UInt64": return $"cast({getExp(callExp.Arguments[0])} as number)";
case "System.Guid": return $"substr(to_char({getExp(callExp.Arguments[0])}), 1, 36)";
}
break;
case "NewGuid":
break;
case "Next":
if (callExp.Object?.Type == typeof(Random)) return "cast(dbms_random.value*1000000000 as smallint)";
break;
case "NextDouble":
if (callExp.Object?.Type == typeof(Random)) return "dbms_random.value";
break;
case "Random":
if (callExp.Method.DeclaringType.IsNumberType()) return "dbms_random.value";
break;
case "ToString":
if (callExp.Object != null) return $"to_char({getExp(callExp.Object)})";
break;
}
var objExp = callExp.Object;
var objType = objExp?.Type;
if (objType?.FullName == "System.Byte[]") return null;

59
FreeSql/PostgreSQL/PostgreSQLExpression.cs
View File

@@ -16,12 +16,71 @@ namespace FreeSql.PostgreSQL {
internal override string ExpressionLambdaToSqlOther(Expression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName) {
Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
switch (exp.NodeType) {
case ExpressionType.Convert:
var operandExp = (exp as UnaryExpression)?.Operand;
switch (exp.Type.NullableTypeOrThis().ToString()) {
case "System.Boolean": return $"(({getExp(operandExp)})::varchar not in ('0','false','f','no'))";
case "System.Byte": return $"({getExp(operandExp)})::int2";
case "System.Char": return $"substr(({getExp(operandExp)})::char, 1, 1)";
case "System.DateTime": return $"({getExp(operandExp)})::timestamp";
case "System.Decimal": return $"({getExp(operandExp)})::numeric";
case "System.Double": return $"({getExp(operandExp)})::float8";
case "System.Int16": return $"({getExp(operandExp)})::int2";
case "System.Int32": return $"({getExp(operandExp)})::int4";
case "System.Int64": return $"({getExp(operandExp)})::int8";
case "System.SByte": return $"({getExp(operandExp)})::int2";
case "System.Single": return $"({getExp(operandExp)})::float4";
case "System.String": return $"({getExp(operandExp)})::varchar";
case "System.UInt16": return $"({getExp(operandExp)})::int2";
case "System.UInt32": return $"({getExp(operandExp)})::int4";
case "System.UInt64": return $"({getExp(operandExp)})::int8";
case "System.Guid": return $"({getExp(operandExp)})::uuid";
}
break;
case ExpressionType.ArrayLength:
var arrOperExp = getExp((exp as UnaryExpression).Operand);
if (arrOperExp.StartsWith("(") || arrOperExp.EndsWith(")")) return $"array_length(array[{arrOperExp.TrimStart('(').TrimEnd(')')}],1)";
return $"case when {arrOperExp} is null then 0 else array_length({arrOperExp},1) end";
case ExpressionType.Call:
var callExp = exp as MethodCallExpression;
switch (callExp.Method.Name) {
case "Parse":
case "TryParse":
switch (callExp.Method.DeclaringType.NullableTypeOrThis().ToString()) {
case "System.Boolean": return $"(({getExp(callExp.Arguments[0])})::varchar not in ('0','false','f','no'))";
case "System.Byte": return $"({getExp(callExp.Arguments[0])})::int2";
case "System.Char": return $"substr(({getExp(callExp.Arguments[0])})::char, 1, 1)";
case "System.DateTime": return $"({getExp(callExp.Arguments[0])})::timestamp";
case "System.Decimal": return $"({getExp(callExp.Arguments[0])})::numeric";
case "System.Double": return $"({getExp(callExp.Arguments[0])})::float8";
case "System.Int16": return $"({getExp(callExp.Arguments[0])})::int2";
case "System.Int32": return $"({getExp(callExp.Arguments[0])})::int4";
case "System.Int64": return $"({getExp(callExp.Arguments[0])})::int8";
case "System.SByte": return $"({getExp(callExp.Arguments[0])})::int2";
case "System.Single": return $"({getExp(callExp.Arguments[0])})::float4";
case "System.UInt16": return $"({getExp(callExp.Arguments[0])})::int2";
case "System.UInt32": return $"({getExp(callExp.Arguments[0])})::int4";
case "System.UInt64": return $"({getExp(callExp.Arguments[0])})::int8";
case "System.Guid": return $"({getExp(callExp.Arguments[0])})::uuid";
}
break;
case "NewGuid":
break;
case "Next":
if (callExp.Object?.Type == typeof(Random)) return "(random()*1000000000)::int4";
break;
case "NextDouble":
if (callExp.Object?.Type == typeof(Random)) return "random()";
break;
case "Random":
if (callExp.Method.DeclaringType.IsNumberType()) return "random()";
break;
case "ToString":
if (callExp.Object != null) return $"({getExp(callExp.Object)})::varchar";
break;
}
var objExp = callExp.Object;
var objType = objExp?.Type;
if (objType?.FullName == "System.Byte[]") return null;

64
FreeSql/SqlServer/SqlServerExpression.cs
View File

@@ -15,8 +15,70 @@ namespace FreeSql.SqlServer {
internal override string ExpressionLambdaToSqlOther(Expression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName) {
Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
switch (exp.NodeType) {
case ExpressionType.Convert:
var operandExp = (exp as UnaryExpression)?.Operand;
switch (exp.Type.NullableTypeOrThis().ToString()) {
case "System.Boolean": return $"(cast({getExp(operandExp)} as varchar) not in ('0','false'))";
case "System.Byte": return $"cast({getExp(operandExp)} as tinyint)";
case "System.Char": return $"substring(cast({getExp(operandExp)} as nvarchar),1,1)";
case "System.DateTime": return $"cast({getExp(operandExp)} as datetime)";
case "System.Decimal": return $"cast({getExp(operandExp)} as decimal(36,18))";
case "System.Double": return $"cast({getExp(operandExp)} as decimal(32,16))";
case "System.Int16": return $"cast({getExp(operandExp)} as smallint)";
case "System.Int32": return $"cast({getExp(operandExp)} as int)";
case "System.Int64": return $"cast({getExp(operandExp)} as bigint)";
case "System.SByte": return $"cast({getExp(operandExp)} as tinyint)";
case "System.Single": return $"cast({getExp(operandExp)} as decimal(14,7))";
case "System.String": return operandExp.Type.NullableTypeOrThis() == typeof(Guid) ? $"cast({getExp(operandExp)} as varchar(36))" : $"cast({getExp(operandExp)} as nvarchar)";
case "System.UInt16": return $"cast({getExp(operandExp)} as smallint)";
case "System.UInt32": return $"cast({getExp(operandExp)} as int)";
case "System.UInt64": return $"cast({getExp(operandExp)} as bigint)";
case "System.Guid": return $"cast({getExp(operandExp)} as uniqueidentifier)";
}
break;
case ExpressionType.Call:
var callExp = exp as MethodCallExpression;
switch(callExp.Method.Name) {
case "Parse":
case "TryParse":
switch (callExp.Method.DeclaringType.NullableTypeOrThis().ToString()) {
case "System.Boolean": return $"(cast({getExp(callExp.Arguments[0])} as varchar) not in ('0','false'))";
case "System.Byte": return $"cast({getExp(callExp.Arguments[0])} as tinyint)";
case "System.Char": return $"substring(cast({getExp(callExp.Arguments[0])} as nvarchar),1,1)";
case "System.DateTime": return $"cast({getExp(callExp.Arguments[0])} as datetime)";
case "System.Decimal": return $"cast({getExp(callExp.Arguments[0])} as decimal(36,18))";
case "System.Double": return $"cast({getExp(callExp.Arguments[0])} as decimal(32,16))";
case "System.Int16": return $"cast({getExp(callExp.Arguments[0])} as smallint)";
case "System.Int32": return $"cast({getExp(callExp.Arguments[0])} as int)";
case "System.Int64": return $"cast({getExp(callExp.Arguments[0])} as bigint)";
case "System.SByte": return $"cast({getExp(callExp.Arguments[0])} as tinyint)";
case "System.Single": return $"cast({getExp(callExp.Arguments[0])} as decimal(14,7))";
case "System.UInt16": return $"cast({getExp(callExp.Arguments[0])} as smallint)";
case "System.UInt32": return $"cast({getExp(callExp.Arguments[0])} as int)";
case "System.UInt64": return $"cast({getExp(callExp.Arguments[0])} as bigint)";
case "System.Guid": return $"cast({getExp(callExp.Arguments[0])} as uniqueidentifier)";
}
break;
case "NewGuid":
switch (callExp.Method.DeclaringType.NullableTypeOrThis().ToString()) {
case "System.Guid": return $"newid()";
}
break;
case "Next":
if (callExp.Object?.Type == typeof(Random)) return "cast(rand()*1000000000 as int)";
break;
case "NextDouble":
if (callExp.Object?.Type == typeof(Random)) return "rand()";
break;
case "Random":
if (callExp.Method.DeclaringType.IsNumberType()) return "rand()";
break;
case "ToString":
if (callExp.Object != null) return callExp.Object.Type.NullableTypeOrThis() == typeof(Guid) ? $"cast({getExp(callExp.Object)} as varchar(36))" : $"cast({getExp(callExp.Object)} as nvarchar)";
break;
}
var objExp = callExp.Object;
var objType = objExp?.Type;
if (objType?.FullName == "System.Byte[]") return null;
@@ -306,7 +368,7 @@ namespace FreeSql.SqlServer {
case "ToInt64": return $"cast({getExp(exp.Arguments[0])} as bigint)";
case "ToSByte": return $"cast({getExp(exp.Arguments[0])} as tinyint)";
case "ToSingle": return $"cast({getExp(exp.Arguments[0])} as decimal(14,7))";
case "ToString": return $"cast({getExp(exp.Arguments[0])} as nvarchar)";
case "ToString": return exp.Arguments[0].Type.NullableTypeOrThis() == typeof(Guid) ? $"cast({getExp(exp.Arguments[0])} as varchar(36))" : $"cast({getExp(exp.Arguments[0])} as nvarchar)";
case "ToUInt16": return $"cast({getExp(exp.Arguments[0])} as smallint)";
case "ToUInt32": return $"cast({getExp(exp.Arguments[0])} as int)";
case "ToUInt64": return $"cast({getExp(exp.Arguments[0])} as bigint)";

59
FreeSql/Sqlite/SqliteExpression.cs
View File

@@ -15,8 +15,67 @@ namespace FreeSql.Sqlite {
internal override string ExpressionLambdaToSqlOther(Expression exp, List<SelectTableInfo> _tables, List<SelectColumnInfo> _selectColumnMap, Func<Expression[], string> getSelectGroupingMapString, SelectTableInfoType tbtype, bool isQuoteName) {
Func<Expression, string> getExp = exparg => ExpressionLambdaToSql(exparg, _tables, _selectColumnMap, getSelectGroupingMapString, tbtype, isQuoteName);
switch (exp.NodeType) {
case ExpressionType.Convert:
var operandExp = (exp as UnaryExpression)?.Operand;
switch (exp.Type.NullableTypeOrThis().ToString()) {
case "System.Boolean": return $"({getExp(operandExp)} not in ('0','false'))";
case "System.Byte": return $"cast({getExp(operandExp)} as int2)";
case "System.Char": return $"substr(cast({getExp(operandExp)} as character), 1, 1)";
case "System.DateTime": return $"datetime({getExp(operandExp)})";
case "System.Decimal": return $"cast({getExp(operandExp)} as decimal(36,18))";
case "System.Double": return $"cast({getExp(operandExp)} as double)";
case "System.Int16":
case "System.Int32":
case "System.Int64":
case "System.SByte": return $"cast({getExp(operandExp)} as smallint)";
case "System.Single": return $"cast({getExp(operandExp)} as float)";
case "System.String": return $"cast({getExp(operandExp)} as character)";
case "System.UInt16": return $"cast({getExp(operandExp)} as unsigned)";
case "System.UInt32": return $"cast({getExp(operandExp)} as decimal(10,0))";
case "System.UInt64": return $"cast({getExp(operandExp)} as decimal(21,0))";
case "System.Guid": return $"substr(cast({getExp(operandExp)} as character), 1, 36)";
}
break;
case ExpressionType.Call:
var callExp = exp as MethodCallExpression;
switch (callExp.Method.Name) {
case "Parse":
case "TryParse":
switch (callExp.Method.DeclaringType.NullableTypeOrThis().ToString()) {
case "System.Boolean": return $"({getExp(callExp.Arguments[0])} not in ('0','false'))";
case "System.Byte": return $"cast({getExp(callExp.Arguments[0])} as int2)";
case "System.Char": return $"substr(cast({getExp(callExp.Arguments[0])} as character), 1, 1)";
case "System.DateTime": return $"datetime({getExp(callExp.Arguments[0])})";
case "System.Decimal": return $"cast({getExp(callExp.Arguments[0])} as decimal(36,18))";
case "System.Double": return $"cast({getExp(callExp.Arguments[0])} as double)";
case "System.Int16":
case "System.Int32":
case "System.Int64":
case "System.SByte": return $"cast({getExp(callExp.Arguments[0])} as smallint)";
case "System.Single": return $"cast({getExp(callExp.Arguments[0])} as float)";
case "System.UInt16": return $"cast({getExp(callExp.Arguments[0])} as unsigned)";
case "System.UInt32": return $"cast({getExp(callExp.Arguments[0])} as decimal(10,0))";
case "System.UInt64": return $"cast({getExp(callExp.Arguments[0])} as decimal(21,0))";
case "System.Guid": return $"substr(cast({getExp(callExp.Arguments[0])} as character), 1, 36)";
}
break;
case "NewGuid":
break;
case "Next":
if (callExp.Object?.Type == typeof(Random)) return "cast(random()*1000000000 as int)";
break;
case "NextDouble":
if (callExp.Object?.Type == typeof(Random)) return "random()";
break;
case "Random":
if (callExp.Method.DeclaringType.IsNumberType()) return "random()";
break;
case "ToString":
if (callExp.Object != null) return $"cast({getExp(callExp.Object)} as character)";
break;
}
var objExp = callExp.Object;
var objType = objExp?.Type;
if (objType?.FullName == "System.Byte[]") return null;