public int Update <T>(object obj, MySearchUtil util)
{
using (var conn = GetConnection())
{
string where = util.GetConditionClaus();
var param = util.GetParameters();
var props = obj.GetType().GetProperties();
var entity = MyContainer.Get(typeof(T));
StringBuilder sb = new StringBuilder();
List <string> _cols = new List <string>();
List <string> propNames = new List <string>();
foreach (var p in props)
{
propNames.Add(p.Name);
param.Add(p.Name, p.GetValue(obj));
_cols.Add($"{p.Name}=@{p.Name}");
}
sb.Append($"UPDATE [{entity.TableName}] SET ");
sb.Append(string.Join(',', _cols));
sb.Append($" WHERE {where}");
return(conn.Execute(sb.ToString(), obj));
}
}
/// <summary>
/// 加载实体
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="util"></param>
/// <param name="cols"></param>
/// <returns></returns>
public T Load <T>(MySearchUtil util, string cols = "*")
{
using (var conn = GetConnection())
{
string sql = "SELECT TOP 1 " + cols + " FROM [" + GetTableName(typeof(T)) + "] WHERE " +
util.GetConditionClaus() + (string.IsNullOrWhiteSpace(util.GetOrderByClaus()) ? "" : " ORDER BY " + util.GetOrderByClaus());
return(conn.Query <T>(sql, util.GetParameters()).SingleOrDefault());
}
}
/// <summary>
/// 获取指定表的所有数据，返回dynamic类型的数据列表
/// </summary>
/// <param name="util">查询参数</param>
/// <param name="table">要查询的表</param>
/// <param name="cols">要查询的列</param>
/// <param name="top">指定数量</param>
/// <returns></returns>
public IEnumerable <dynamic> Fetch(MySearchUtil util, string table, string cols = "*", int?top = null)
{
string where = util.GetConditionClaus();
string orderby = util.GetOrderByClaus();
DynamicParameters param = util.GetParameters();
string sql = GetQuerySql(cols, table, where, orderby);
using (var conn = GetConnection())
{
return(conn.Query(sql, param));
}
}
/// <summary>
/// 获取所有数据
/// </summary>
/// <typeparam name="T">实体</typeparam>
/// <param name="util">查询参数</param>
/// <param name="table">查询的数据表</param>
/// <param name="cols">要查询的列</param>
/// <param name="top">要获取的数量</param>
/// <returns></returns>
public IEnumerable <T> Fetch <T>(MySearchUtil util, string table = "", string cols = "*", int?top = null)
{
if (string.IsNullOrWhiteSpace(table))
{
table = GetTableName(typeof(T));
}
string where = util.GetConditionClaus();
string orderby = util.GetOrderByClaus();
DynamicParameters param = util.GetParameters();
string sql = GetQuerySql(cols, table, where, orderby, top);
using (var conn = GetConnection())
{
return(conn.Query <T>(sql, param));
}
}
public int Update(KeyValuePairs cols, string table, MySearchUtil util)
{
using (var conn = GetConnection())
{
var _params = util.GetParameters();
List <string> _update_cols = new List <string>();
int idx = 0;
string _paramName = "";
foreach (var kv in cols)
{
_paramName = _paramPrefix + "c" + idx.ToString();
_update_cols.Add(kv.Key + "=" + _paramName);
_params.Add(_paramName, kv.Value);
idx++;
}
string sql = "UPDATE [" + table + "] SET " + string.Join(",", _update_cols) + " WHERE " + util.GetConditionClaus();
return(conn.Execute(sql, _params));
}
}
public int GetCount(string tableName, MySearchUtil util = null)
{
string condition = "";
DynamicParameters param = null;
if (util != null)
{
condition = util.GetConditionClaus();
param = util.GetParameters();
}
else
{
condition = "1=1";
}
using (var conn = GetConnection())
{
string sql = "SELECT COUNT(0) FROM [" + tableName + "] WHERE " + condition;
return(conn.ExecuteScalar <int>(sql, param));
}
}