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- 增加 表达式 .HasValue 和 !.HasValue 的解析支持；

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This commit is contained in:
28810
2019-06-21 11:11:08 +08:00
parent 3e8fed416d
commit 5891493402
2 changed files with 42 additions and 12 deletions
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22
FreeSql.Tests/UnitTest1.cs
View File

@@ -269,6 +269,28 @@ namespace FreeSql.Tests {
[Fact]
public void Test1() {
var dcksdkdsk = g.sqlite.Select<NewsArticle>().Where(a => a.testaddtime2.HasValue).ToSql();
var dcksdkdsk2 = g.sqlite.Select<NewsArticle>().Where(a => !a.testaddtime2.HasValue).ToSql();
var testgrpsql = g.sqlite.Select<TaskBuild>()
.From<Templates>((a, b) => a.InnerJoin(aa => aa.TemplatesId
== b.Id2))
.GroupBy((a, b) => b.Title)
.ToSql(a => new {
a.Key,
sss = a.Sum(a.Value.Item1.Id)
});
var testgrpsql2 = g.sqlite.Select<TaskBuild>()
.From<Templates>((a, b) => a.InnerJoin(aa => aa.TemplatesId
== b.Id2))
.GroupBy((a, b) => b.Title)
.ToList(a => new {
a.Key,
sss = a.Sum(a.Value.Item1.Id)
});
var tbid = g.sqlite.Select<TaskBuild>().First().Id;
var tbidsql = g.sqlite.Update<TaskBuild>().Where(a => a.Id == tbid)
.Set(a => new TaskBuild {

32
FreeSql/Internal/CommonExpression.cs
View File

@@ -278,7 +278,7 @@ namespace FreeSql.Internal {
};
public string ExpressionWhereLambdaNoneForeignObject(List<SelectTableInfo> _tables, TableInfo table, List<SelectColumnInfo> _selectColumnMap, Expression exp, Func<Expression[], string> getSelectGroupingMapString) {
var sql = ExpressionLambdaToSql(exp, new ExpTSC { _tables = _tables, _selectColumnMap = _selectColumnMap, getSelectGroupingMapString = getSelectGroupingMapString, tbtype = SelectTableInfoType.From, isQuoteName = true, isDisableDiyParse = false, style = ExpressionStyle.Where, currentTable = table });
if (exp.NodeType == ExpressionType.MemberAccess && exp.Type == typeof(bool))
if (exp.NodeType == ExpressionType.MemberAccess && exp.Type == typeof(bool) && sql.Contains(" IS ") == false && sql.Contains(" = ") == false)
return $"{sql} = {formatSql(true, null)}";
switch (sql) {
case "1":
@@ -291,7 +291,7 @@ namespace FreeSql.Internal {
public string ExpressionWhereLambda(List<SelectTableInfo> _tables, Expression exp, Func<Expression[], string> getSelectGroupingMapString) {
var sql = ExpressionLambdaToSql(exp, new ExpTSC { _tables = _tables, getSelectGroupingMapString = getSelectGroupingMapString, tbtype = SelectTableInfoType.From, isQuoteName = true, isDisableDiyParse = false, style = ExpressionStyle.Where });
if (exp.NodeType == ExpressionType.MemberAccess && exp.Type == typeof(bool))
if (exp.NodeType == ExpressionType.MemberAccess && exp.Type == typeof(bool) && sql.Contains(" IS ") == false && sql.Contains(" = ") == false)
return $"{sql} = {formatSql(true, null)}";
switch (sql) {
case "1":
@@ -303,26 +303,26 @@ namespace FreeSql.Internal {
}
public void ExpressionJoinLambda(List<SelectTableInfo> _tables, SelectTableInfoType tbtype, Expression exp, Func<Expression[], string> getSelectGroupingMapString) {
var tbidx = _tables.Count;
var filter = ExpressionLambdaToSql(exp, new ExpTSC { _tables = _tables, getSelectGroupingMapString = getSelectGroupingMapString, tbtype = tbtype, isQuoteName = true, isDisableDiyParse = false, style = ExpressionStyle.Where });
if (exp.NodeType == ExpressionType.MemberAccess && exp.Type == typeof(bool))
filter = $"{filter} = {formatSql(true, null)}";
switch (filter) {
var sql = ExpressionLambdaToSql(exp, new ExpTSC { _tables = _tables, getSelectGroupingMapString = getSelectGroupingMapString, tbtype = tbtype, isQuoteName = true, isDisableDiyParse = false, style = ExpressionStyle.Where });
if (exp.NodeType == ExpressionType.MemberAccess && exp.Type == typeof(bool) && sql.Contains(" IS ") == false && sql.Contains(" = ") == false)
sql = $"{sql} = {formatSql(true, null)}";
switch (sql) {
case "1":
case "'t'": filter = "1=1"; break;
case "'t'": sql = "1=1"; break;
case "0":
case "'f'": filter = "1=2"; break;
case "'f'": sql = "1=2"; break;
default: break;
}
if (_tables.Count > tbidx) {
_tables[tbidx].Type = tbtype;
_tables[tbidx].On = filter;
_tables[tbidx].On = sql;
for (var a = tbidx + 1; a < _tables.Count; a++)
_tables[a].Type = SelectTableInfoType.From;
} else {
var find = _tables.Where((a, c) => c > 0 && (a.Type == tbtype || a.Type == SelectTableInfoType.From) && string.IsNullOrEmpty(a.On)).LastOrDefault();
if (find != null) {
find.Type = tbtype;
find.On = filter;
find.On = sql;
}
}
}
@@ -409,7 +409,14 @@ namespace FreeSql.Internal {
switch (exp.NodeType) {
case ExpressionType.Not:
var notExp = (exp as UnaryExpression)?.Operand;
if (notExp.NodeType == ExpressionType.MemberAccess) return $"{ExpressionLambdaToSql(notExp, tsc)} = {formatSql(false, null)}";
if (notExp.NodeType == ExpressionType.MemberAccess) {
var notBody = ExpressionLambdaToSql(notExp, tsc);
if (notBody.Contains(" IS NULL")) return notBody.Replace(" IS NULL", " IS NOT NULL");
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 $"not({ExpressionLambdaToSql(notExp, tsc)})";
case ExpressionType.Quote: return ExpressionLambdaToSql((exp as UnaryExpression)?.Operand, tsc);
case ExpressionType.Lambda: return ExpressionLambdaToSql((exp as LambdaExpression)?.Body, tsc);
@@ -665,7 +672,8 @@ namespace FreeSql.Internal {
case ExpressionType.MemberAccess:
var exp4 = exp as MemberExpression;
if (exp4 != null) {
if (exp4.Expression != null && exp4.Expression.Type.IsArray == false && exp4.Expression.Type.IsNullableType()) return ExpressionLambdaToSql(exp4.Expression, tsc);
if (exp4.Expression != null && exp4.Expression.Type.IsArray == false && exp4.Expression.Type.IsNullableType())
return exp4.Member.Name == "HasValue" ? $"{ExpressionLambdaToSql(exp4.Expression, tsc)} IS NOT NULL" : ExpressionLambdaToSql(exp4.Expression, tsc);
var extRet = "";
var memberType = exp4.Expression?.Type ?? exp4.Type;
switch (memberType.FullName) {