public RowAdapter NewRowAdapter(Selector columnNames)
{
RowObjectAdapter d = new RowObjectAdapter(this, columnNames)
{
InsertIdentityOn = this.insertIdentityOn
};
return(d);
}
/// <summary>
/// this dpo Compares to the Reocrd in the SQL Server
/// </summary>
public bool Changed(params string[] ignoredColumns)
{
RowObjectAdapter d = new RowObjectAdapter(this);
d.Apply();
bool exists = d.Load();
if (!exists)
{
return(true);
}
return(!d.Row.EqualTo(this.Row, ignoredColumns));
}
public virtual DataRow Load()
{
RowObjectAdapter d = new RowObjectAdapter(this);
d.Apply();
exists = d.Load();
FillObject(d.Row);
//RowLoaded(d.Row);
AfterLoaded?.Invoke(this, new DataRowChangeEventArgs(d.Row, DataRowAction.Nothing));
return(d.Row);
}
public virtual bool Delete()
{
RowObjectAdapter d = new RowObjectAdapter(this);
d.Apply();
//check 1..many table dependency
foreach (PropertyInfo propertyInfo in this.columnProperties)
{
AssociationAttribute association = Reflex.GetAssociationAttribute(propertyInfo);
if (association == null)
{
continue;
}
if (!propertyInfo.PropertyType.IsGenericType)
{
continue;
}
IDPCollection collection = (IDPCollection)propertyInfo.GetValue(this, null);
if (collection.Count == 0)
{
continue;
}
Type[] typeParameters = propertyInfo.PropertyType.GetGenericArguments();
if (typeParameters.Length == 1 && typeParameters[0].IsSubclassOf(typeof(PersistentObject)))
{
throw new ApplicationException(string.Format(
"Error: data persistent object on Table {0} cannot be deleted because Table {1} depends on it.",
TableName,
collection.TableName));
}
}
d.RowChanged += RowChanged;
return(d.Delete());
}
private DataRow save(Selector columnNames, SaveMode mode)
{
RowObjectAdapter d = new RowObjectAdapter(this, columnNames);
d.Apply();
d.InsertIdentityOn = this.insertIdentityOn;
d.ValueChangedHandler = ValueChanged;
d.RowChanged += RowChanged;
if (BeforeSaving != null)
{
d.RowChanged += BeforeSaving;
}
switch (mode)
{
case SaveMode.Insert:
d.Insert();
break;
case SaveMode.Update:
d.Update();
break;
case SaveMode.Save:
d.Save();
break;
case SaveMode.Validate:
d.Validate();
break;
}
FillIdentity(d.Row); //because of Identity retrieved
return(d.Row);
}