public static string CreateSqlToSelect <TEntity>(IFilter filter, params string[] orderbys) where TEntity : new()
{
IHashEntity entity = (IHashEntity) new TEntity();
string sql = "SELECT ";
foreach (string colName in entity.ColNames)
{
sql = sql + colName + ",";
}
sql = sql.Remove(sql.Length - 1, 1) + " FROM {0}";
sql = System.String.Format(sql, entity.TableName);
if (filter != null)
{
sql = System.String.Format(sql + " where {0}", filter.GetExpression());
}
if (orderbys.Count() > 0)
{
string orderbyStr = "";
foreach (string orderby in orderbys)
{
orderbyStr = orderbyStr + orderby + ",";
}
sql = sql + " order by " + orderbyStr.Remove(orderbyStr.Length - 1, 1);
}
return(sql);
}
public void Insert(IHashEntity entity, bool PkeyIsIdentity)
{
SqlFactory sql = new SqlFactory(entity.TableName, SqlType.INSERT);
Hashtable htalbe = entity.PropertySet;
foreach (string colName in entity.ColNames)
{
if (!PkeyIsIdentity || colName != entity.PKeyName)
{
if (htalbe[colName] != null)
{
switch (SqlFactory.GetColType(htalbe[colName].GetType()))
{
case 1:
sql.AppendQuote(colName, htalbe[colName]);
break;
case 2:
sql.Append(colName, htalbe[colName]);
break;
default:
sql.Append(colName, htalbe[colName]);
break;
}
}
}
}
ExecuteNonQuery(sql.CreateSQL());
}
public FastDBService(IHashEntity _HashEntity, IListEntity _ListEntity, ISingleEntity _SingleEntity, ITreeEntity _TreeEntity)
{
HashEntity = _HashEntity;
ListEntity = _ListEntity;
SingleEntity = _SingleEntity;
TreeEntity = _TreeEntity;
}
public void Delete <TEntity>(IFilter filter) where TEntity : new()
{
IHashEntity entity = (IHashEntity) new TEntity();
StringBuilder strSql = new StringBuilder();
strSql.AppendFormat("DELETE * FROM [{0}] ", entity.TableName);
if (filter != null)
{
strSql.AppendFormat(" where {0}", filter.GetExpression());
}
ExecuteNonQuery(strSql.ToString());
}
public static string CreateSqlToUpdate(IHashEntity entity)
{
Hashtable htalbe = entity.PropertySet;
if (htalbe[entity.PKeyName] == null)
{
throw new Exception("实体没有主键不能用此方法更新");
}
SqlFactory sql = new SqlFactory(entity.TableName, SqlType.UPDATE);
foreach (string colName in entity.ColNames)
{
if (colName != entity.PKeyName && htalbe[colName] != System.DBNull.Value && htalbe[colName] != null)
{
switch (SqlFactory.GetColType(htalbe[colName].GetType()))
{
case 1:
sql.AppendQuote(colName, htalbe[colName]);
break;
case 2:
sql.Append(colName, htalbe[colName]);
break;
default:
sql.Append(colName, htalbe[colName]);
break;
}
}
}
switch (SqlFactory.GetColType(htalbe[entity.PKeyName].GetType()))
{
case 1:
sql.AppendWhereQuote(entity.PKeyName, htalbe[entity.PKeyName]);
break;
case 2:
sql.AppendWhere(entity.PKeyName, htalbe[entity.PKeyName]);
break;
default:
sql.AppendWhere(entity.PKeyName, htalbe[entity.PKeyName]);
break;
}
return(sql.CreateSQL());
}
public void Delete(IHashEntity entity)
{
string sql;
switch (SqlFactory.GetColType(entity.PropertySet[entity.PKeyName].GetType()))
{
case 1:
sql = "DELETE * FROM [{0}] WHERE {1} = '{2}'";
break;
case 2:
sql = "DELETE * FROM [{0}] WHERE {1} = {2}";
break;
default:
sql = "DELETE * FROM [{0}] WHERE {1} = '{2}'";
break;
}
ExecuteNonQuery(string.Format(sql, entity.TableName, entity.PKeyName, entity.PropertySet[entity.PKeyName]));
}
public void Update(IHashEntity entity, IFilter filter)
{
Hashtable htalbe = entity.PropertySet;
StringBuilder strSql = new StringBuilder();
strSql.AppendFormat("UPDATE {0} SET ", entity.TableName);
foreach (string colName in entity.ColNames)
{
if (colName != entity.PKeyName && htalbe[colName] != System.DBNull.Value && htalbe[colName] != null)
{
switch (SqlFactory.GetColType(htalbe[colName].GetType()))
{
case 1:
strSql.AppendFormat("{0}='{1}',", colName, htalbe[colName]);
break;
case 2:
strSql.AppendFormat("{0}={1},", colName, htalbe[colName]);
break;
default:
strSql.AppendFormat("{0}='{1}',", colName, htalbe[colName]);
break;
}
}
}
strSql.Remove(strSql.Length - 1, 1);
if (filter != null)
{
strSql.AppendFormat(" where {0}", filter.GetExpression());
}
ExecuteNonQuery(strSql.ToString());
}
public void Update <TEntity, TKey>(TEntity entity)
{
IHashEntity ihe = (IHashEntity)entity;
DataRabbit.IEntity <TKey> ien = (DataRabbit.IEntity <TKey>)entity;
string SQL = String.Format("UPDATE [{0}] SET ", ihe.TableName);
Hashtable htalbe = ihe.PropertySet;
string KeyName = "";
int i = 0;
foreach (string colName in htalbe.Keys)
{
if (!htalbe[colName].Equals(ien.GetPKeyValue()))
{
SQL = SQL + String.Format("[{0}] = '{1}'", colName, htalbe[colName]);
if (i < htalbe.Count - 2)
{
SQL = SQL + " , ";
}
i++;
}
else
{
KeyName = colName;
}
}
if (KeyName != "")
{
SQL = SQL + String.Format("WHERE [{0}] = '{1}'", KeyName, ien.GetPKeyValue());
}
else
{
throw new Exception("未设置主建，不能用此方法更新对像！请检查！");
}
ExecuteNonQuery(SQL);
}
public void Update(IHashEntity entity)
{
string sql = SqlFactory.CreateSqlToUpdate(entity);
ExecuteNonQuery(sql);
}
