private void Tables_CollectionChanging(object sender, CollectionChangeEventArgs e)
{
switch (e.Action)
{
case CollectionChangeAction.Add:
{
if (e.Element is InternalTableBase dataTable)
{
//if (dataTable.Parent != null)
//{
// var parentTable = dataTable.Parent;
// var relationName = InternalSetBase.GenerateRelationName(parentTable.LocalName, dataTable.LocalName, parentTable.Namespace);
// this.Relations.Add(relationName, parentTable.RelationColumn, dataTable.RelationColumn);
//}
}
}
break;
case CollectionChangeAction.Remove:
{
if (e.Element is InternalTableBase dataTable)
{
if (dataTable.Parent != null)
{
var parentTable = dataTable.Parent;
var relationName = InternalSetBase.GenerateRelationName(parentTable.LocalName, dataTable.LocalName, parentTable.Namespace);
dataTable.Constraints.Remove(relationName);
this.Relations.Remove(relationName);
}
}
}
break;
}
}
public static void RemoveRelation(InternalSetBase dataSet, InternalTableBase parent, InternalTableBase table)
{
var relationName = InternalSetBase.GenerateRelationName(parent.LocalName, table.LocalName, parent.Namespace);
if (dataSet != null)
{
dataSet.Relations.Remove(relationName);
}
}
public static void AddRelation(InternalSetBase dataSet, InternalTableBase parent, InternalTableBase table)
{
var relationName = InternalSetBase.GenerateRelationName(parent.LocalName, table.LocalName, parent.Namespace);
if (dataSet != null)
{
dataSet.Relations.Add(relationName, parent.ColumnRelation, table.ParentRelation);
}
}
public CremaDataRow[] GetChildRows(CremaDataTable childTable)
{
if (childTable.Parent != this.Table)
{
return(null);
}
var relationName = InternalSetBase.GenerateRelationName(this.Table.TableName, childTable.TableName, this.Table.Namespace);
return(this.row.GetChildRows(relationName).Select(item => (item as InternalDataRow).Target).ToArray());
}
public void RefreshRelation(InternalTableBase table)
{
for (var i = 0; i < this.Relations.Count; i++)
{
var item = this.Relations[i];
if (item.ParentTable == table || item.ChildTable == table)
{
if (item.ParentTable is InternalTableBase parentTable && item.ChildTable is InternalTableBase childTable)
{
item.RelationName = InternalSetBase.GenerateRelationName(parentTable.LocalName, childTable.LocalName, parentTable.Namespace);
}
}
}
}
private void Tables_CollectionChanged(object sender, CollectionChangeEventArgs e)
{
switch (e.Action)
{
case CollectionChangeAction.Add:
{
if (e.Element is InternalTableBase dataTable)
{
if (dataTable.Parent != null)
{
var parentTable = dataTable.Parent;
var relationName = InternalSetBase.GenerateRelationName(parentTable.LocalName, dataTable.LocalName, parentTable.Namespace);
this.Relations.Add(relationName, parentTable.ColumnRelation, dataTable.ParentRelation);
}
dataTable.PropertyChanged += DataTable_PropertyChanged;
}
}
break;
case CollectionChangeAction.Remove:
{
if (e.Element is InternalTableBase dataTable)
{
dataTable.PropertyChanged -= DataTable_PropertyChanged;
if (dataTable.TemplatedParent != null)
{
dataTable.InternalTemplatedParent = null;
}
else
{
foreach (var item in dataTable.DerivedItems.ToArray())
{
item.InternalTemplatedParent = null;
}
}
}
}
break;
}
}
public CremaDataRow[] GetChildRows(string childTableName)
{
var relationName = InternalSetBase.GenerateRelationName(this.Table.TableName, childTableName, this.Table.Namespace);
return(this.row.GetChildRows(relationName).Select(item => (item as InternalDataRow).Target).ToArray());
}
