public ExplorerTypes(string name, EditingContext context, ExplorerEFElement parent)
: base(context, null, parent)
{
if (name != null)
{
base.Name = name;
}
_isConceptual = (typeof(ExplorerConceptualEntityModel) == parent.GetType()) ? true : false;
}
protected override bool RemoveChild(ExplorerEFElement efElementToRemove)
{
var explorerProperty = efElementToRemove as ExplorerProperty;
if (explorerProperty != null)
{
var indexOfRemovedChild = _properties.Remove(explorerProperty);
return((indexOfRemovedChild < 0) ? false : true);
}
Debug.Fail(
string.Format(
CultureInfo.CurrentCulture, Resources.BadRemoveBadChildType,
efElementToRemove.GetType().FullName, Name, GetType().FullName));
return(false);
}
protected override bool RemoveChild(ExplorerEFElement efElementToRemove)
{
var explorerAssocSet = efElementToRemove as ExplorerAssociationSet;
if (explorerAssocSet == null)
{
Debug.Fail(
string.Format(
CultureInfo.CurrentCulture, Resources.BadRemoveBadChildType,
efElementToRemove.GetType().FullName, Name, GetType().FullName));
return(false);
}
var indexOfRemovedChild = _associationSets.Remove(explorerAssocSet);
return((indexOfRemovedChild < 0) ? false : true);
}
protected override bool RemoveChild(ExplorerEFElement efElementToRemove)
{
var explorerEntityContainer = efElementToRemove as ExplorerConceptualEntityContainer;
if (explorerEntityContainer == null)
{
Debug.Fail(
string.Format(
CultureInfo.CurrentCulture, Resources.BadRemoveBadChildType,
efElementToRemove.GetType().FullName, Name, GetType().FullName));
return(false);
}
var indexOfRemovedChild = _entityContainers.Remove(explorerEntityContainer);
return((indexOfRemovedChild < 0) ? false : true);
}
protected override bool RemoveChild(ExplorerEFElement efElementToRemove)
{
var explorerEntityTypeShape = efElementToRemove as ExplorerEntityTypeShape;
if (explorerEntityTypeShape == null)
{
Debug.Fail(
string.Format(
CultureInfo.CurrentCulture, Resources.BadRemoveBadChildType,
efElementToRemove.GetType().FullName, Name, GetType().FullName));
return(false);
}
// We can't use TypedChildList's Remove to delete the entity-type-shape because the it will fail if the underlying entity-type has been deleted.
// When the entity-type is deleted, the name of the entity-type-shape will change to an empty string and deletion will fail
// until the list is re-sorted (see implementation of ExplorerEFElement's Remove).
return(_explorerEntityTypeShapes.ChildList.Remove(explorerEntityTypeShape));
}
private static ExplorerEFElement GetNewOrExisting(
EditingContext context, EFElement efElement, ExplorerEFElement parent, Type viewModelType, bool mustNotExist)
{
var xref = GetModelToBrowserModelXRef(context);
var result = xref.GetExisting(efElement);
if (result != null)
{
if (mustNotExist)
{
Debug.Fail(
string.Format(
CultureInfo.CurrentCulture,
Resources.BadInsertChildAlreadyExists, efElement.GetType().FullName, parent.GetType().FullName));
return(null);
// TODO: we need to provide a general exception-handling mechanism and replace the above Assert()
// by e.g. the excepiton below
// throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, Resources.BadInsertChildAlreadyExists, efElement.GetType().FullName, parent.GetType().FullName));
}
else
{
result.Parent = parent;
}
}
else
{
if (viewModelType != null)
{
if (!xref.IsDisplayedInExplorerProtected(efElement))
{
Debug.Fail(
"Attempting to create an ExplorerEFElement of type " + viewModelType.FullName +
" based on an EFElement which is not displayed in the Explorer " + efElement.ToPrettyString());
return(null);
}
result = Activator.CreateInstance(viewModelType, context, efElement, parent) as ExplorerEFElement;
xref.Add(efElement, result);
}
}
return(result);
}