public static bool InsertObject(OracleConnection connection, object obj)
{
StringBuilder strSql = new StringBuilder();
List <string> all = new List <string>();
Dictionary <string, OracleParameter> opd = getDBMember(obj, null, null, all);
List <OracleParameter> op = new List <OracleParameter>();
try
{
strSql.Append(string.Format("insert into {0}", DBAttribute.getDBTable(obj.GetType())));
}
catch (ArgumentException e)
{
throw new ArgumentException("Invaild Argument!\n\n from Insert(OracleConnection connection,object obj) \n");
}
strSql.Append(string.Format("( {0} )", string.Join(",", all.ToArray())));
strSql.Append(string.Format(" values ({0})", ":" + string.Join(",:", all.ToArray())));
foreach (string str in all)
{
op.Add(opd[str]);
}
OracleCommand cmd = new OracleCommand();
PrepareCommand(cmd, connection, null, strSql.ToString(), op.ToArray());
int tem = cmd.ExecuteNonQuery();
return(tem != -1 && tem != 0);
}
/// <summary>
/// 删除obj对象
/// </summary>
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("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 existObj(object obj)
{
List <string> prikey = new List <string>(), prival = new List <string>();
DBAttribute.getDBPrimaryElement(obj.GetType(), obj, prikey, prival);
return(exist(obj.GetType(), prikey, prival));
}
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);
}
public static T getObject <T>(T Obj)
{
OracleConnection conn = pool.fetchConnection();
StringBuilder sb = new StringBuilder();
sb.Append(string.Format("select * from {0} where ", DBAttribute.getDBTable(typeof(T))));
List <string> key = new List <string>(), val = new List <string>();
DBAttribute.getDBPrimaryElement(typeof(T), Obj, key, val);
int len = key.Count();
for (int i = 0; i < len; ++i)
{
sb.Append(string.Format(" {0}={1} AND ", key[i], val[i]));
}
sb.Length -= 4;
List <T> lt = testQuery <T>(sb.ToString());
T res = lt.Count() == 0?Obj:lt[0];
pool.releaseConnection(conn);
return(res);
}
/*不负责检查原对象是否存在于表中*/
/// <summary>
/// 修改
/// </summary>
public static bool Update(OracleConnection connection, object obj)
{
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);
}
