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- 修复 Delete.Where in 查询为空的时候仍然执行删除；#1068

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This commit is contained in:
2881099
2022-04-12 17:00:02 +08:00
parent 34011a6b5f
commit a01478b4b4
4 changed files with 87 additions and 43 deletions
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6
FreeSql/Internal/CommonProvider/DeleteProvider.cs
View File

@ -170,7 +170,7 @@ namespace FreeSql.Internal.CommonProvider
public virtual string ToSql()
{
if (_whereTimes <= 0) return null;
if (_whereTimes <= 0 || _where.Length == 0) return null;
var sb = new StringBuilder();
ToSqlFetch(sql =>
{
@ -182,7 +182,7 @@ namespace FreeSql.Internal.CommonProvider
public void ToSqlFetch(Action<StringBuilder> fetch)
{
if (_whereTimes <= 0) return;
if (_whereTimes <= 0 || _where.Length == 0) return;
var newwhere = new StringBuilder().Append(" WHERE ").Append(_where);
if (_whereGlobalFilter.Any())
@ -215,7 +215,7 @@ namespace FreeSql.Internal.CommonProvider
#else
async public Task ToSqlFetchAsync(Func<StringBuilder, Task> fetchAsync)
{
if (_whereTimes <= 0) return;
if (_whereTimes <= 0 || _where.Length == 0) return;
var newwhere = new StringBuilder().Append(" WHERE ").Append(_where);
if (_whereGlobalFilter.Any())

106
FreeSql/Internal/UtilsExpressionTree.cs
View File

@ -2268,11 +2268,19 @@ namespace FreeSql.Internal
return char.IsLetter(name, 0) ? name : string.Concat("_", name);
}
public static string ReplaceSqlConstString(string sql, Dictionary<string, string> parms)
public static string ReplaceSqlConstString(string sql, Dictionary<string, string> parms, string paramPrefix = "@")
{
var nsb = new StringBuilder();
var sidx = 0;
var pidx = 0;
var ptmpPrefix = "";
while (true)
{
pidx++;
ptmpPrefix = $"{paramPrefix}p{pidx}";
if (sql.Contains(ptmpPrefix) == false) break;
}
pidx = 0;
while (sidx < sql.Length)
{
var chr = sql[sidx++];
@ -2307,7 +2315,7 @@ namespace FreeSql.Internal
while (true)
{
pidx++;
pname = $"@p{pidx}";
pname = $"{ptmpPrefix}{pidx}";
if (parms.ContainsKey(pname) == false) break;
}
}
@ -2326,46 +2334,72 @@ namespace FreeSql.Internal
var remidx = sql.IndexOf("WHERE ");
if (remidx != -1) sql = sql.Substring(remidx + 6);
var sidx = 0;
var ltcou = 0;
var ltidxStack = new Stack<int>();
while (sidx < sql.Length)
//sql = Regex.Replace(sql, @"\s*([@:\?][\w_]+)\s*(<|<=|>|>=|=)\s*((\w+)\s*\.)?([\w_]+)");
return LocalProcessBrackets(sql);
string LocalProcessBrackets(string locsql)
{
var chr = sql[sidx++];
if (chr == '(')
var sidx = 0;
var ltcou = 0;
var ltidxStack = new Stack<int>();
while (sidx < locsql.Length)
{
ltcou++;
ltidxStack.Push(sidx - 1);
}
if (chr == ')')
{
ltcou--;
var ltidx = ltidxStack.Pop();
if (ltidx == 0 && sidx == sql.Length - 1)
break;
var sqlLeft = ltidx == 0 ? "" : sql.Remove(ltidx);
var sqlMid = sql.Substring(ltidx, sidx - ltidx);
var sqlMidNew = "";
var sqlRight = sidx == sql.Length - 1 ? "" : sql.Substring(sidx + 1);
var mLeft = Regex.Match(sqlLeft, @" (and|or|not)\s*$", RegexOptions.IgnoreCase);
if (mLeft.Success)
var chr = locsql[sidx++];
if (chr == '(')
{
switch (mLeft.Groups[1].Value)
{
case "and":
sqlMidNew = sqlMid.Substring(1, sqlMid.Length - 2);
break;
case "or":
break;
case "not":
break;
}
ltcou++;
ltidxStack.Push(sidx - 1);
}
if (chr == ')')
{
ltcou--;
var ltidx = ltidxStack.Pop();
var ltidx2 = ltidx;
var sidx2 = sidx;
while(sidx < locsql.Length)
{
var chr2 = locsql[sidx];
if (chr2 == ')')
{
if (ltidxStack.First() == ltidx - 1)
{
ltidx = ltidxStack.Pop();
sidx++;
}
}
break;
}
if (ltidx == 0 && sidx == locsql.Length)
{
locsql = locsql.Substring(1, sidx - 2);
break;
}
var sqlLeft = ltidx == 0 ? "" : locsql.Remove(ltidx);
var sqlMid = locsql.Substring(ltidx, sidx - ltidx);
var sqlMidNew = sqlMid;
var sqlRight = sidx == locsql.Length ? "" : locsql.Substring(sidx);
var mLeft = Regex.Match(sqlLeft, @" (and|or|not)\s*$", RegexOptions.IgnoreCase);
if (mLeft.Success)
{
switch (mLeft.Groups[1].Value)
{
case "and":
sqlMidNew = sqlMid.Substring(1, sqlMid.Length - 2).Trim();
break;
case "or":
sqlMidNew = "";
break;
case "not":
break;
}
}
sidx -= sqlMid.Length - sqlMidNew.Length;
locsql = $"{sqlLeft}{sqlMidNew}{sqlRight}";
}
sidx -= sqlMid.Length - sqlMidNew.Length;
sql = $"{sqlLeft}{sqlMidNew}{sqlRight}";
}
return locsql;
}
return sql;
}
static string ParseSqlWhereLevel12(string sql)