internal override void Invoke(CommandProcessorContext cpc)
{
var viewModel = _property.GetRootViewModel();
Debug.Assert(viewModel != null, "Unable to find root view model from property: " + _property.Name);
if (viewModel != null)
{
var property = viewModel.ModelXRef.GetExisting(_property) as Property;
Debug.Assert(property != null);
var cmd = new SetKeyPropertyCommand(property, _property.EntityKey);
CommandProcessor.InvokeSingleCommand(cpc, cmd);
}
}
// the key scenario that this is wanting to cover is where ModelGen has included a discriminator
// column in the inferred set of keys in TPH; this column won't be mapped and can't be part of the key
private void UnsetUnmappedKeyColumnsFromViews()
{
foreach (var view in _views)
{
foreach (var column in view.ResolvableKeys)
{
var mappings = column.GetAntiDependenciesOfType <ScalarProperty>();
if (mappings.Count == 0)
{
var command = new SetKeyPropertyCommand(column, false);
CommandProcessor.InvokeSingleCommand(_cpc, command);
}
}
}
}
private void PropagateKeyToStorageColumn(Property property, Property column)
{
var table = column.EntityType;
if (table != null)
{
// if we are mapped to a view or a defining query then proceed with key checking
var ses = table.EntitySet as StorageEntitySet;
if (ses != null &&
(ses.DefiningQuery != null || ses.StoreSchemaGeneratorTypeIsView))
{
// cache this view off to process later
if (!_views.Contains(table))
{
_views.Add(table);
}
bool?setKey = null;
if (property.IsKeyProperty)
{
// this column should be a key
if (!column.IsKeyProperty)
{
setKey = true;
}
}
else
{
// this column should not be a key
if (column.IsKeyProperty)
{
setKey = false;
}
}
if (setKey != null)
{
var command = new SetKeyPropertyCommand(column, (bool)setKey);
CommandProcessor.InvokeSingleCommand(_cpc, command);
}
}
}
}
