Exemple #1
0
        /// <summary>
        /// orderTreeNode: 根据升序或降序尽心修改顺序
        /// </summary>
        /// <param name="_table">表名</param>
        /// <param name="_id">要排序操作的ID值</param>
        /// <param name="_ifAsc">是否按照升序方式排序, true: 升序, false: 降序</param>
        /// <returns></returns>
        public string orderTreeNode(string _table, int _id, bool _ifAsc)
        {
            MySqlTrans _trans = new MySqlTrans(this);
            string     _val = String.Empty, _sign = ">", _fn = "min";

            if (_ifAsc)
            {
                _sign = "<"; _fn = "max";
            }
            try
            {
                Json _node = _trans.execJson(MySqlString.getSelectStr(_table, "pid, treeOrder", "id=" + _id));
                if (_node != null)
                {
                    int  _pid = _node.getInt("pid"), _treeOrder = _node.getInt("treeOrder");
                    Json _target = _trans.execJson("select top 1 id,treeOrder from {0} where pid={1} and treeOrder=(select {2}(treeOrder) from {0} where pid={1} and treeOrder{3}{4});", _table, _pid, _fn, _sign, _treeOrder);
                    if (_target != null)
                    {
                        string _sql = "update {0} set treeOrder={1} where id={2};";
                        _sql  = MySqlString.format(_sql, _table, _target.getValue("treeOrder"), _id);
                        _sql += "update {0} set treeOrder={1} where id={2};";
                        _sql  = MySqlString.format(_sql, _table, _treeOrder, _target.getValue("id"));
                        _trans.execNonQuery(_sql);
                    }
                    else
                    {
                        Native.writeToPage(Native.getErrorMsg("id是{0}的记录指针已经是第一行或最后一行", _id));
                    }
                }
                else
                {
                    Native.writeToPage(Native.getErrorMsg("在表({0})中不存在id是{1}的记录", _table, _id));
                }
                _trans.commit();
            }
            catch (Exception e)
            {
                _val = Native.getErrorMsg(e.Message);
                _trans.rollback();
            }
            finally
            {
                _trans.close();
            }
            return(_val);
        }
Exemple #2
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 public ArrayList execJsonList(string sql, params object[] args)
 {
     return(execJsonList(MySqlString.format(sql, args)));
 }
Exemple #3
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 public Json execJson(string sql, params object[] args)
 {
     return(execJson(MySqlString.format(sql, args)));
 }
Exemple #4
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 public DataSet execDataSet(string sql, params object[] args)
 {
     return(execDataSet(MySqlString.format(sql, args)));
 }
Exemple #5
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 public string execScalar(string sql, Json json)
 {
     return(execScalar(MySqlString.format(sql, json)));
 }
Exemple #6
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 public string execScalar(string sql, params object [] args)
 {
     return(execScalar(MySqlString.format(sql, args)));
 }
Exemple #7
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 public int execNonQuery(string sql, Json json)
 {
     return(execNonQuery(MySqlString.format(sql, json)));
 }
Exemple #8
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 public int execNonQuery(string sql, params object [] args)
 {
     return(execNonQuery(MySqlString.format(sql, args)));
 }
Exemple #9
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 public string execSqlByProc(string sql, Json json)
 {
     return(execSqlByProc(MySqlString.format(sql, json)));
 }
Exemple #10
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 public string execQuery(string sql, Json json)
 {
     return(execQuery(MySqlString.format(sql, json)));
 }