首页 > 代码库 > 两个实体类比较，记录前后的数据变化，精确到每列的值
两个实体类比较，记录前后的数据变化，精确到每列的值
不是通用的方法，只是提供一个思路。
实体类：
/// <summary> /// 体例数据实体类 /// </summary> public class RulesLayout { /// <summary> /// 体例元数据行业代码 /// </summary> public string hydm { get; set; } /// <summary> /// 体例元数据行业名称 /// </summary> public string hymc { get; set; } /// <summary> /// 体例元数据主体代码 /// </summary> public string ztdm { get; set; } /// <summary> /// 体例元数据主体名称 /// </summary> public string ztmc { get; set; } /// <summary> /// 体例元数据结构代码 /// </summary> public string jgdm { get; set; } /// <summary> /// 体例元数据结构名称 /// </summary> public string jgmc { get; set; } /// <summary> /// 体例元数据结构名称同义词 /// </summary> public string jgmctyc { get; set; } /// <summary> /// 体例元数据代码 /// </summary> public string ysjdm { get; set; } /// <summary> /// 体例元数据名称 /// </summary> public string ysjmc { get; set; } /// <summary> /// 体例元数据名称同义词 /// </summary> public string ysjmctyc { get; set; } /// <summary> /// 属性 /// </summary> public string sx { get; set; } /// <summary> /// 状态 /// </summary> public string zt { get; set; } }数据库操作类
/// <summary>
/// 体例数据操作类
/// </summary>
public static class StyleData
{
public static string constr = "Data Source=cnis_nei;User ID=cnis_all;Password=csic_cnis";
static OracleConnection con=null;
static OracleTransaction tran = null;
static OracleCommand cmd = null;
/// <summary>
/// 执行一个sql语句，返回第一个值
/// </summary>
/// <param name="sql"></param>
/// <returns></returns>
public static object GetOneValue(string sql)
{
using (con = new OracleConnection(constr))
{
con.Open();
cmd = new OracleCommand(sql, con);
return cmd.ExecuteOracleScalar();
}
}
/// <summary>
/// 执行一个sql语句
/// </summary>
/// <param name="sql"></param>
public static int ExecSql(string sql)
{
using (con= new OracleConnection(constr))
{
con.Open();
cmd = new OracleCommand(sql, con);
return cmd.ExecuteNonQuery();
}
}
/// <summary>
/// 执行sql语句获取datareader,读取完毕后，必须关闭datareader
/// </summary>
/// <param name="sql"></param>
/// <returns></returns>
public static OracleDataReader GetReader(string sql)
{
OracleDataReader dr = null;
con = new OracleConnection(constr);
con.Open();
OracleCommand cmd= new OracleCommand(sql, con);
dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
return dr;
}
/// <summary>
/// 在事务中执行多个sql语句
/// </summary>
/// <param name="sql"></param>
/// <returns></returns>
public static bool ExeclSqlList(List<string>sql)
{
try
{
con = new OracleConnection(constr);
tran = cmd.Transaction;
con.Open();
con.BeginTransaction();
foreach (string s in sql)
{
cmd = new OracleCommand(s, con, tran);
cmd.ExecuteNonQuery();
}
tran.Commit();
tran.Dispose();
return true;
}
catch
{
tran.Rollback();
tran.Dispose();
return false;
}
}
}
}
业务类
/// <summary>
///体例元数据业务辅助类
/// </summary>
public class StyleDataAssist
{
/// <summary>
/// 创建数据库辅助表，并把表名添加到t_system_data记录
/// </summary>
/// <returns></returns>
public ArrayList CreateSubsidiaryTable()
{
ArrayList tbl = new ArrayList();
string str = StyleData.GetOneValue("select max(num) from t_system_data").ToString();
int i = 0;
if (String.IsNullOrEmpty(str))
{
i = 1;
}
else
{
i += 1;
}
string vocation = "t_rvl_style_vocation" + i.ToString();
string main = "t_rvl_style_main" + i.ToString();
string frame = "t_rvl_style_frame" + i.ToString();
string metadata = "http://www.mamicode.com/t_rvl_style_metadata" + i.ToString();
//创建辅助表
string sqlvoc = "create table " + vocation + " as select * from t_rvl_style_vocation where 1=1";
string sqlmain = "create table " + main + " as select * from t_rvl_style_main where 1=1";
string sqlfrm = "create table " + frame + " as select * from t_rvl_style_frame where 1=1 ";
string sqldat = "create table " + metadata + " as select * from t_rvl_style_metadata where 1=1 ";
//将辅助表的信息插入到t_system_data表记录
string names = vocation + "," + main + "," + frame + "," + metadata;
string insert = "insert into t_system_data(tablenames,chagetime,num) values(‘" + names + "‘,‘" + DateTime.Now.ToLongDateString() + "‘," + i + ")";
List<string> sql = new List<string>();
sql.Add(sqlvoc);
sql.Add(sqlmain);
sql.Add(sqlfrm);
sql.Add(sqldat);
if (StyleData.ExeclSqlList(sql))
{
tbl.Add(vocation);
tbl.Add(main);
tbl.Add(frame);
tbl.Add(metadata);
}
return tbl;
}
/// <summary>
/// 从数据库中获取体例元数据
/// </summary>
/// <param name="where"></param>
/// <returns></returns>
public List<RulesLayout> GetStyleData(string where)
{
List<RulesLayout> List = new List<RulesLayout>();
RulesLayout rule = null;
StringBuilder sql = new StringBuilder();
sql.Append("select vc.vocation_code as 行业代码,vc.vocation_name as 行业名称,");
sql.Append(" main.code as 主体代码,main.caption as 主体名称, ");
sql.Append(" frame.frame_code as 结构代码, frame.frame_name as 结构名称, frame.frame_name_synonyms as 结构名称同义词, ");
sql.Append("data.code as 元数据代码, data.caption as 元数据名称, data.synonyms as 元数据名称同义词,");
sql.Append(" data.attribute as 属性 ");
sql.Append(" from t_rvl_style_vocation vc");
sql.Append(" inner join t_rvl_style_main main on vc.vocation_code = main.vocation_code ");
sql.Append(" inner join t_rvl_style_frame frame on main.id = frame.main_id ");
sql.Append(" inner join t_rvl_style_metadata data on frame.id = data.frame_id where 1=1 ");
sql.Append(where);
sql.Append(" order by vc.vocation_code ");
try
{
OracleDataReader dr = StyleData.GetReader(sql.ToString());
while (dr.Read())
{
rule = new RulesLayout();
rule.hydm = dr["行业代码"].ToString();
rule.hymc = dr["行业名称"].ToString();
rule.ztdm = dr["主体代码"].ToString();
rule.ztmc = dr["主体名称"].ToString();
rule.jgdm = dr["结构代码"].ToString();
rule.jgmc = dr["结构名称"].ToString();
rule.jgmctyc = dr["结构名称同义词"].ToString();
rule.ysjdm = dr["元数据代码"].ToString();
rule.ysjmc = dr["元数据名称"].ToString();
rule.ysjmctyc = dr["元数据名称同义词"].ToString();
rule.sx = dr["属性"].ToString();
rule.zt = "old";
List.Add(rule);
}
dr.Close();
dr.Dispose();
return List;
}
catch (Exception ex)
{
return null;
}
}
/// <summary>
/// 读取excel数据
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
public List<RulesLayout> ReadExcel(string filename,string where)
{
List<RulesLayout> List = new List<RulesLayout>();
RulesLayout rule = null;
string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filename + ";Extended Properties=‘Excel 8.0;IMEX=1‘";
OleDbConnection Conn = new OleDbConnection(strCon);
string strCom = "SELECT distinct * FROM [属性2$] where 1=1 "+where;
Conn.Open();
OleDbCommand cmd = null;
string refmsg = "";
bool result = CheckExcel(Conn, cmd, ref refmsg);
if (1 == 1)
{
cmd = new OleDbCommand(strCom, Conn);
OleDbDataReader dr;
dr = cmd.ExecuteReader();
while (dr.Read())
{
rule = new RulesLayout();
rule.hydm = "0"+dr["体例元数据行业代码"].ToString();
rule.hymc = dr["体例元数据行业名称"].ToString();
rule.ztdm = "0"+dr["体例元数据主体代码"].ToString();
rule.ztmc = dr["体例元数据主体名称"].ToString();
rule.jgdm = dr["体例元数据结构代码"].ToString();
rule.jgmc = dr["体例元数据结构名称"].ToString();
rule.jgmctyc = dr["体例元数据结构名称同义词"].ToString();
rule.ysjdm ="0"+ dr["体例元数据代码"].ToString();
rule.ysjmc = dr["体例元数据名称"].ToString();
rule.ysjmctyc = dr["体例元数据名称同义词"].ToString();
rule.sx = dr["属性"].ToString();
List.Add(rule);
}
Conn.Close();
Conn.Dispose();
return List;
}
else
{
Conn.Close();
Conn.Dispose();
return null;
}
}
/// <summary>
/// 检查excel数据的准确性
/// </summary>
/// <param name="con"></param>
/// <param name="cmd"></param>
/// <param name="msg"></param>
/// <returns></returns>
private bool CheckExcel(OleDbConnection con, OleDbCommand cmd, ref string msg)
{
StringBuilder sql = new StringBuilder();
StringBuilder Msg = new StringBuilder();
sql.Append("SELECT * FROM [属性$] where 体例元数据行业代码<>‘‘ ");
sql.Append("or 体例元数据行业名称<>‘‘ or 体例元数据主体代码<>‘‘ ");
sql.Append("or 体例元数据主体名称<>‘‘ or 体例元数据结构代码<>‘‘ or 体例元数据结构名称<>‘‘");
cmd = new OleDbCommand(sql.ToString(), con);
OleDbDataReader dr;
dr = cmd.ExecuteReader();
Msg.Append("excel 数据错误:");
if (dr.Read())
{
Msg.Append("体例元数据行业代码:" + dr["体例元数据行业代码"].ToString());
Msg.Append("体例元数据行业名称:" + dr["体例元数据行业名称"].ToString());
Msg.Append("体例元数据主体代码:" + dr["体例元数据主体代码"].ToString());
Msg.Append("体例元数据主体名称:" + dr["体例元数据主体名称"].ToString());
Msg.Append("体例元数据结构代码:" + dr["体例元数据结构代码"].ToString());
Msg.Append("体例元数据结构名称:" + dr["体例元数据结构名称"].ToString());
Msg.Append("\r\n");
}
if (Msg.ToString() != "excel 数据错误:")
{
msg = Msg.ToString();
return false;
}
else
{
msg = "";
return true;
}
}
/// <summary>
/// 比较excel的数据和数据库的数据,获取差异数据
/// </summary>
/// <param name="file">来自文件的数据</param>
/// <param name="data">来自数据库原来的数据</param>
/// <returns></returns>
public List<RulesLayout> CompareDataList(List<RulesLayout> file, List<RulesLayout> data)
{
List<RulesLayout> Comp = new List<RulesLayout>();
List<RulesLayout> datacopy = data;
RulesLayout rule = null;
#region 没有发生改变的
Comp = GetSameData(file, data);
#endregion
//从file,data里面移除2者相同的数据，减少下方的遍历次数
foreach (RulesLayout r in Comp)
{
file.Remove(r);
data.Remove(r);
}
#region 更改了的
int fnum = file.Count;
int dnum = data.Count;
for (int f = 0; f < fnum; f++)
{
bool isAdd = true;//是否是新增数据
RulesLayout fuleRule = file[f];
for (int d = 0; d < dnum; d++)
{
RulesLayout dataRule = data[d];
bool isquery=(fuleRule.hydm==dataRule.hydm)&&(fuleRule.ztdm== dataRule.ztdm)
&&(fuleRule.jgdm==dataRule.jgdm)&&(fuleRule.ysjdm==dataRule.ysjdm);
if (isquery)
{
rule = CompareRule(fuleRule, dataRule);
Comp.Add(rule);
isAdd = false;
}
}
if (isAdd)
{
fuleRule.zt = "新增";
Comp.Add(fuleRule);
}
}
#endregion
#region 获取删除的数据
var deletedata = http://www.mamicode.com/from d in datacopy
where !(from c in Comp select c.ysjdm).Contains(d.ysjdm)
select d;
foreach (RulesLayout r in deletedata)
{
r.zt = "删除";
Comp.Add(r);
}
#endregion
return Comp;
}
/// <summary>
/// 获取修改过的字段信息
/// </summary>
/// <param name="file"></param>
/// <param name="data"></param>
/// <returns></returns>
private RulesLayout CompareRule(RulesLayout file, RulesLayout data)
{
StringBuilder gg = new StringBuilder();
#region 比较2个实体类的每个字段，如果不同，就记录下字段名字
//并最后更新下来自文本的实体类的状态属性
if (file.hydm != data.hydm)
{
// gg.Append("行业代码,");
gg.Append("hydm,");
}
if (file.hymc != data.hymc)
{
// gg.Append("行业名称,");
gg.Append("hymc,");
}
if (file.ztdm != data.ztdm)
{
//gg.Append("主体代码,");
gg.Append("ztdm,");
}
if (file.ztmc != data.ztmc)
{
//gg.Append("主体名称,");
gg.Append("ztmc,");
}
if (file.jgdm != data.jgdm)
{
//gg.Append("结构代码,");
gg.Append("jgdm,");
}
if (file.jgmc != data.jgmc)
{
// gg.Append("结构名称,");
gg.Append("jgmc,");
}
if (file.jgmctyc != data.jgmctyc)
{
//gg.Append("结构名称同义词,");
gg.Append("jgmctyc,");
}
if (file.ysjdm != data.ysjdm)
{
//gg.Append("元数据代码,");
gg.Append("ysjdm,");
}
if (file.ysjmc != data.ysjmc)
{
//gg.Append("元数据名称,");
gg.Append("ysjmc,");
}
if (file.ysjmctyc != data.ysjmctyc)
{
// gg.Append("元数据名称同义词,");
gg.Append("ysjmctyc,");
}
if (file.sx != data.sx)
{
// gg.Append("属性,");
gg.Append("sx,");
}
#endregion
file.zt = gg.Append("修改").ToString();
return file;
}
/// <summary>
/// 获取相同的数据
/// </summary>
/// <param name="File"></param>
/// <param name="Data"></param>
/// <returns></returns>
private List<RulesLayout> GetSameData(List<RulesLayout> File, List<RulesLayout> Data)
{
var same = from f in File
join d in Data
on new
{
hydm= f.hydm,
hymc=f.hymc,
ztdm=f.ztdm,
ztmc=f.ztmc,
jgdm=f.jgdm,
jgmc=f.jgmc,
gjmctyc=f.jgmctyc,
ysjdm=f.ysjdm,
ysjmc=f.ysjmc,
ysjmctyc=f.ysjmctyc,
sx=f.sx
}
equals
new
{
hydm = d.hydm,
hymc = d.hymc,
ztdm = d.ztdm,
ztmc = d.ztmc,
jgdm = d.jgdm,
jgmc = d.jgmc,
gjmctyc = d.jgmctyc,
ysjdm = d.ysjdm,
ysjmc = d.ysjmc,
ysjmctyc = d.ysjmctyc,
sx = d.sx
}
select f;
return same.ToList();
}
/// <summary>
/// datagridview变色
/// </summary>
public void DataGridViewAddColor(DataGridView dataGridView1)
{
string contr = StyleData.constr;
#region 数据变色
int count = dataGridView1.RowCount;
for (int i = 0; i < count; i++)
{
if (dataGridView1.Rows[i].Cells["zt"].Value != null)
{
string statue = dataGridView1.Rows[i].Cells["zt"].Value.ToString();
if (statue == "新增")
{
dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.Yellow;
dataGridView1.Rows[i].Cells["zt"].ToolTipText = "erwerwer";
}
else if (statue == "删除")
{
dataGridView1.Rows[i].DefaultCellStyle.BackColor = Color.Red;
}
else
{
string[] cells = statue.Split(‘,‘);
for (int a = 0; a < cells.Length - 1; a++)
{
dataGridView1.Rows[i].Cells[cells[a]].Style.BackColor = Color.Green;
}
}
}
}
#endregion
}
}
两个实体类比较，记录前后的数据变化，精确到每列的值