/// <summary>
/// 判断 GroupByClip 是否为null
/// </summary>
/// <param name="groupByClip"></param>
/// <returns></returns>
public static bool IsNullOrEmpty(GroupByOperation groupByClip)
{
if ((null == groupByClip) || string.IsNullOrEmpty(groupByClip.ToString()))
{
return(true);
}
return(false);
}
/// <summary>
/// 比较
/// </summary>
/// <param name="groupByClip"></param>
/// <returns></returns>
public bool Equals(GroupByOperation groupByClip)
{
if (null == groupByClip)
{
return(false);
}
return(this.ToString().Equals(groupByClip.ToString()));
}
/// <summary>
/// 去掉的表前缀
/// </summary>
/// <returns></returns>
public GroupByOperation RemovePrefixTableName()
{
GroupByOperation groupc = new GroupByOperation(this.groupByClip);
if (string.IsNullOrEmpty(groupc.groupByClip))
{
return(groupc);
}
StringBuilder gstring = new StringBuilder();
string[] fs = groupc.groupByClip.Split(',');
foreach (string s in fs)
{
if (string.IsNullOrEmpty(s))
{
continue;
}
gstring.Append(",");
if (s.IndexOf('.') > 0)
{
gstring.Append(s.Substring(s.IndexOf('.') + 1));
}
else
{
gstring.Append(s);
}
}
if (gstring.Length > 1)
{
groupc.groupByClip = gstring.ToString().Substring(1);
}
else
{
groupc.groupByClip = gstring.ToString();
}
return(groupc);
}