/// <summary>
/// 更新DataSet，如果DataSet中有行添加、删除或数据更新则按每条数据执行相应的SQL语句。
/// 必须对已用Query对象查询出来的DataSet或者在Command中指定TableName。
/// </summary>
/// <param name="ds"></param>
public void UpdateDataSet <T>(DataSet ds, QueryConditional <T> whereObject = null) where T : DbObject
{
var table = ds.Tables[0];
string tableName = string.Empty;
if (whereObject != null)
{
tableName = DbMetaDataManager.GetTableName(typeof(T));
}
else
{
tableName = table.TableName;
}
if (string.IsNullOrEmpty(tableName))
{
throw new InvalidOperationException("表名不能为空！");
}
string whereSQL = null;
if (whereObject != null)
{
whereSQL = whereObject.ToString();
}
Provider.UpdateDataSet(ds, whereSQL);
}
/// <summary>
/// 条件查询
/// </summary>
/// <typeparam name="TModel"></typeparam>
/// <param name="query"></param>
/// <param name="qc">条件对象</param>
/// <returns>查询构造器，后面可接其它查询构造器方法</returns>
public static SelectQuery <TModel> Where <TModel>(this SelectQuery <TModel> query, QueryConditional <TModel> qc)
{
Regex regex = new Regex(@"[a-z|A-Z]+\w*\.");
string sql = regex.Replace(qc.ToString(), @"T1.");
query.WhereCreater.Append(" AND ")
.Append(sql);
return(query);
}