public int Delete(Query query)
{
var srcName = new QTable(query.Table.Name);
var schema = GetSchema();
var dataClass = schema.FindClassByID(query.Table.Name);
if (dataClass != null)
{
var ids = ObjectContainerStorage.GetObjectIds(query);
return(ObjectContainerStorage.Delete(ids));
}
// check for relation table
var relation = schema.FindRelationshipByID(query.Table.Name);
if (relation != null)
{
var rels = ObjectContainerStorage.LoadRelations(query.Table.Name, query.Condition).ToArray();
ObjectContainerStorage.RemoveRelation(rels);
return(rels.Length);
}
return(UnderlyingDalc.Delete(query));
}
public void Update(DataTable t)
{
var schema = GetSchema();
var dataClass = schema.FindClassByID(t.TableName);
if (dataClass != null)
{
foreach (DataRow r in t.Rows)
{
switch (r.RowState)
{
case DataRowState.Added:
InsertDataRow(dataClass, r);
break;
case DataRowState.Modified:
UpdateDataRow(dataClass, r);
break;
case DataRowState.Deleted:
DeleteDataRow(dataClass, r);
break;
}
}
t.AcceptChanges();
return;
}
// check for relation table
var relation = schema.FindRelationshipByID(t.TableName);
if (relation != null)
{
foreach (DataColumn c in t.Columns)
{
if (c.ColumnName != "subject_id" && c.ColumnName != "object_id")
{
throw new ArgumentException(String.Format("{0} does not exist in {1}", c.ColumnName, t.TableName));
}
}
if (!t.Columns.Contains("subject_id"))
{
throw new ArgumentException("subject_id column is required");
}
if (!t.Columns.Contains("object_id"))
{
throw new ArgumentException("object_id column is required");
}
foreach (DataRow r in t.Rows)
{
switch (r.RowState)
{
case DataRowState.Added:
ObjectContainerStorage.AddRelation(
new ObjectRelation(
Convert.ToInt64(r["subject_id"]),
relation,
Convert.ToInt64(r["object_id"])));
break;
case DataRowState.Deleted:
ObjectContainerStorage.RemoveRelation(
new ObjectRelation(
Convert.ToInt64(r["subject_id", DataRowVersion.Original]),
relation,
Convert.ToInt64(r["object_id", DataRowVersion.Original]))
);
break;
default:
throw new NotSupportedException(String.Format("Relation doesn't support row state {0}", r.RowState));
}
}
t.AcceptChanges();
return;
}
UnderlyingDalc.Update(t);
}
