void GetCondition <T>(string col, T val, string andor = AndOr.And, string op = Op.Eq, bool isFunc = false)
{
if (IsKeyCondition)
{
return;
}
if (string.IsNullOrWhiteSpace(col))
{
return;
}
// 如果有左括号,忽略逻辑运算符
if (hasParenthesis)
{
hasParenthesis = false;
}
else if (OtherCondition.Length > 0)
{
OtherCondition.Append(andor);
}
if (isFunc)
{
OtherCondition.Append(DB.SetColumnFunc(col, val));
}
else
{
OtherCondition.Append(DB.GetCondition(col, op));
Params.Add(DB.GetParam(col, val));
}
}
/// <summary>
/// 原生条件字符串
/// </summary>
/// <param name="sqlString">id=? or name=?</param>
/// <param name="args"></param>
/// <returns></returns>
public Sql Where(string sqlString, params object[] args)
{
if (string.IsNullOrWhiteSpace(sqlString))
{
throw new Exception("数据库操作命令不能为空");
}
var cmd = DB.GetRawSql(" " + sqlString + " ", args);
if (cmd.SqlParams != null)
{
Params.AddRange(cmd.SqlParams);
}
// 如果有左括号,忽略逻辑运算符
if (hasParenthesis)
{
hasParenthesis = false;
}
else if (OtherCondition.Length > 0)
{
OtherCondition.Append(AndOr.And);
}
OtherCondition.Append(cmd.SqlString);
return(this);
}
public Sql LP()
{
// 如果有左括号,忽略逻辑运算符
if (hasParenthesis)
{
hasParenthesis = false;
}
else if (OtherCondition.Length > 0)
{
OtherCondition.Append(AndOr.And);
}
OtherCondition.Append(" ( ");
hasParenthesis = true;
return(this);
}
void GetBetweenCondition <T>(string colName, T t1, T t2, string andor = AndOr.And, string op = Op.Between)
{
if (IsKeyCondition)
{
return;
}
if (string.IsNullOrWhiteSpace(colName) || t1 == null || t2 == null)
{
return;
}
// 如果有左括号,忽略逻辑运算符
if (hasParenthesis)
{
hasParenthesis = false;
}
else if (OtherCondition.Length > 0)
{
OtherCondition.Append(andor);
}
OtherCondition.Append(string.Concat("(", DB._RestrictPrefix, colName, DB._RestrictPostfix, op, t1, " AND ", t2, ")"));
}
void GetInCondition <T>(string colName, string andor = AndOr.And, string op = Op.In, params T[] args)
{
if (IsKeyCondition)
{
return;
}
if (string.IsNullOrWhiteSpace(colName) || args == null || args.Length == 0)
{
return;
}
// 如果有左括号,忽略逻辑运算符
if (hasParenthesis)
{
hasParenthesis = false;
}
else if (OtherCondition.Length > 0)
{
OtherCondition.Append(andor);
}
OtherCondition.Append(string.Concat("(", DB._RestrictPrefix, colName, DB._RestrictPostfix, op, "(", string.Join(",", args), "))"));
}
void GetNullCondition(string col, string andor = AndOr.And, bool isnull = true)
{
if (IsKeyCondition)
{
return;
}
if (string.IsNullOrWhiteSpace(col))
{
return;
}
// 如果有左括号,忽略逻辑运算符
if (hasParenthesis)
{
hasParenthesis = false;
}
else if (OtherCondition.Length > 0)
{
OtherCondition.Append(andor);
}
OtherCondition.Append(string.Concat("(", DB._RestrictPrefix, col, DB._RestrictPostfix, isnull ? Op.Null : Op.NotNull, ")"));
}
bool GetLikeCondition(string col, string val, string andor = AndOr.And, string op = Op.Like)
{
if (IsKeyCondition)
{
return(false);
}
if (string.IsNullOrWhiteSpace(col) || string.IsNullOrWhiteSpace(val))
{
return(false);
}
// 如果有左括号,忽略逻辑运算符
if (hasParenthesis)
{
hasParenthesis = false;
}
else if (OtherCondition.Length > 0)
{
OtherCondition.Append(andor);
}
OtherCondition.Append(string.Concat("(", DB._RestrictPrefix, col, DB._RestrictPostfix, op, DB._ParameterPrefix, col, ")"));
return(true);
}
public void ShowSQLString()
{
ShowSQLString(OtherCondition.ToString(), Params);
}
public Sql RP()
{
OtherCondition.Append(" ) ");
return(this);
}