public static bool Delete(OracleConnection connection, object obj)
{
Type type = obj.GetType();
StringBuilder strSql = new StringBuilder();
try
{
strSql.Append(string.Format("delete from {0}", DBAttribute.GetDBTable(type)));
}
catch (ArgumentException e)
{
throw new ArgumentException(e.Message);
// throw new ArgumentException("Invaild Argument!\n\n from Delete(OracleConnection connection, object obj) \n");
}
List <string> propertyPrimaryKeyList = new List <string>();
List <string> propertyPrimaryValueList = new List <string>();
DBAttribute.GetDBPrimaryElement(type, obj, propertyPrimaryKeyList, propertyPrimaryValueList);
if (!(propertyPrimaryKeyList.Any() && propertyPrimaryValueList.Any()))
{
throw new ArgumentException("Invaild Argument!\n\n from Delete(OracleConnection connection, object obj) \n");
}
strSql.Append(string.Format(" where "));
for (int i = 0; i < propertyPrimaryKeyList.Count; ++i)
{
strSql.Append(string.Format(" {0}={1} AND", propertyPrimaryKeyList[i], propertyPrimaryValueList[i]));
}
strSql.Length -= 3;
return(ExecuteSql(connection, strSql.ToString()) > 0);
}
public static bool Update(OracleConnection connection, object obj)
{
//不允许更改主码
StringBuilder strSql = new StringBuilder();
List <string> key = new List <string>(), pri = new List <string>();
Dictionary <string, OracleParameter> opd = GetDBMember(obj, key, pri);
List <OracleParameter> op = new List <OracleParameter>();
strSql.Append(string.Format("update {0} set ", DBAttribute.GetDBTable(obj.GetType())));
for (int i = 0; i < key.Count(); ++i)
{
strSql.Append(string.Format(" {0} = :{0} ,", key[i]));
op.Add(opd[key[i]]);
}
--strSql.Length;
strSql.Append(" where ");
for (int i = 0; i < pri.Count(); ++i)
{
strSql.Append(string.Format(" {0} = :{0} AND", pri[i]));
op.Add(opd[pri[i]]);
}
strSql.Length -= 3;
return(ExecuteSql(connection, strSql.ToString(), op.ToArray()) > 0);
}
public static bool exist(Type type, List <string> key, List <string> val)
{
OracleConnection conn = pool.fetchConnection();
StringBuilder sb = new StringBuilder();
sb.Append(string.Format("select * from {0} where ", DBAttribute.GetDBTable(type)));
int len = key.Count();
for (int i = 0; i < len; ++i)
{
if (i != 0)
{
sb.Append(" AND ");
}
sb.Append($"{key[i]}='{val[i]}'");
}
bool res = OracleHelper.Exists(conn, sb.ToString());
pool.releaseConnection(conn);
return(res);
}
