protected EntityDataSourceReferenceValueColumn(MetadataWorkspace ocWorkspace, NavigationProperty navigationProperty)
: base(EntityDataSourceUtil.CheckArgumentNull(navigationProperty, "navigationProperty").Name)
{
EntityDataSourceUtil.CheckArgumentNull(ocWorkspace, "ocWorkspace");
this.navigationProperty = navigationProperty;
}
protected EntityDataSourceColumn(string displayName, EntityDataSourceColumn controllingColumn)
{
EntityDataSourceUtil.CheckArgumentNull(displayName, "displayName");
this.DisplayName = displayName;
this.ControllingColumn = controllingColumn;
}
internal static EntityDataSourceReferenceGroup Create(Type entityType, AssociationSetEnd end)
{
EntityDataSourceUtil.CheckArgumentNull(entityType, "entityType");
Type groupType = typeof(EntityDataSourceReferenceGroup <>).MakeGenericType(entityType);
return((EntityDataSourceReferenceGroup)Activator.CreateInstance(groupType, new object[] { end }));
}
internal EntityDataSourceWrapperPropertyDescriptor(EntityDataSourceWrapperCollection collection, EntityDataSourceColumn column)
: base(EntityDataSourceUtil.CheckArgumentNull(column, "column").DisplayName, new Attribute[] { })
{
EntityDataSourceUtil.CheckArgumentNull(collection, "collection");
_collection = collection;
_column = column;
}
internal static EntityDataSourceReferenceValueColumn Create(Type clrToType, MetadataWorkspace ocWorkspace, NavigationProperty navigationProperty)
{
EntityDataSourceUtil.CheckArgumentNull(clrToType, "clrToType");
Type columnType = typeof(EntityDataSourceReferenceValueColumn <>).MakeGenericType(clrToType);
EntityDataSourceReferenceValueColumn result = (EntityDataSourceReferenceValueColumn)Activator.CreateInstance(columnType, ocWorkspace, navigationProperty);
return(result);
}
private EntityDataSourceWrapper GetWrapper(object component)
{
// Validate that the component comes from the collection to which
// this descriptor is bound. Elements of the collection are
// non-null wrappers instances.
EntityDataSourceUtil.CheckArgumentNull(component, "component");
EntityDataSourceWrapper wrapper = component as EntityDataSourceWrapper;
if (null == wrapper || this._collection != wrapper.Collection)
{
throw new ArgumentException(Strings.ComponentNotFromProperCollection, "component");
}
return(wrapper);
}
internal EntityDataSourceMemberPath(MetadataWorkspace ocWorkspace, EntityDataSourceMemberPath parent, EdmProperty property, bool isLocallyInteresting)
{
EntityDataSourceUtil.CheckArgumentNull(ocWorkspace, "ocWorkspace");
EntityDataSourceUtil.CheckArgumentNull(property, "property");
this.property = property;
this.parent = parent;
this.isLocallyInteresting = isLocallyInteresting;
this.clrType = EntityDataSourceUtil.GetMemberClrType(ocWorkspace, property);
this.isKey = IsPropertyAKey(property);
// retrieve PropertyInfo (with respect to parent CLR type)
StructuralType parentType = property.DeclaringType;
Type parentClrType = EntityDataSourceUtil.GetClrType(ocWorkspace, parentType);
this.propertyInfo = EntityDataSourceUtil.GetPropertyInfo(parentClrType, this.property.Name);
}
internal EntityDataSourceWrapperCollection(ObjectContext context, EntitySet entitySet, EntityType restrictedEntityType)
{
EntityDataSourceUtil.CheckArgumentNull(context, "context");
EntityDataSourceUtil.CheckArgumentNull(entitySet, "entitySet");
_context = context;
_wrapperList = new List <EntityDataSourceWrapper>();
// get handles on the relevant workspaces
MetadataWorkspace csWorkspace = ((EntityConnection)context.Connection).GetMetadataWorkspace();
MetadataWorkspace ocWorkspace = context.MetadataWorkspace;
// if no restricted type is given, we assume the entity set element type is exposed
EntityType entityType = restrictedEntityType ?? entitySet.ElementType;
_clrEntityType = EntityDataSourceUtil.GetClrType(ocWorkspace, entityType);
// if no restricted type is given and the set is polymorphic, make the collection readonly
if (null == restrictedEntityType &&
1 < EntityDataSourceUtil.GetTypeAndSubtypesOf(entityType, csWorkspace.GetItemCollection(DataSpace.CSpace), true).Count())
{
_isReadOnly = true;
}
// gather the properties
ReadOnlyCollection <EntityDataSourceColumn> columns = EntityDataSourceUtil.GetNamedColumns(csWorkspace, ocWorkspace, entitySet, entityType);
List <PropertyDescriptor> visiblePropertyDescriptors = new List <PropertyDescriptor>(columns.Count);
List <EntityDataSourceWrapperPropertyDescriptor> propertyDescriptors = new List <EntityDataSourceWrapperPropertyDescriptor>(columns.Count);
foreach (EntityDataSourceColumn column in columns)
{
var descriptor = new EntityDataSourceWrapperPropertyDescriptor(this, column);
propertyDescriptors.Add(descriptor);
// if the descriptor does not have a dependent, it is exposed to the user
if (!descriptor.Column.IsHidden)
{
visiblePropertyDescriptors.Add(descriptor);
}
}
_visiblePropertyDescriptors = new PropertyDescriptorCollection(visiblePropertyDescriptors.ToArray(), true);
AllPropertyDescriptors = propertyDescriptors.AsReadOnly();
}
internal EntityDataSourceReferenceKeyColumn(MetadataWorkspace workspace, EntityDataSourceReferenceGroup group, EdmProperty keyMember, EntityDataSourceColumn dependent)
: base(CreateDisplayName(group, keyMember), dependent)
{
EntityDataSourceUtil.CheckArgumentNull(group, "group");
EntityDataSourceUtil.CheckArgumentNull(keyMember, "keyMember");
Debug.Assert(EntityDataSourceUtil.IsScalar(keyMember.TypeUsage.EdmType), "Expected primitive or enum type for key members.");
this.group = group;
this.keyMember = keyMember;
this.clrType = EntityDataSourceUtil.GetMemberClrType(workspace, keyMember);
// if the association end is optional (0..1), make sure the CLR type
// is also nullable
if (this.group.End.CorrespondingAssociationEndMember.RelationshipMultiplicity == RelationshipMultiplicity.ZeroOrOne)
{
this.clrType = EntityDataSourceUtil.MakeNullable(clrType);
this.isNullable = true;
}
}
/// <summary>
/// Get the Clr type for the primitive enum or complex type member. The member must not be null.
/// </summary>
internal static Type GetMemberClrType(MetadataWorkspace ocWorkspace, EdmMember member)
{
EntityDataSourceUtil.CheckArgumentNull(member, "member");
EdmType memberType = member.TypeUsage.EdmType;
Debug.Assert(EntityDataSourceUtil.IsScalar(memberType) ||
memberType.BuiltInTypeKind == BuiltInTypeKind.ComplexType ||
memberType.BuiltInTypeKind == BuiltInTypeKind.EntityType, "member type must be primitive, enum, entity or complex type");
Type clrType;
if (EntityDataSourceUtil.IsScalar(memberType))
{
clrType = memberType.BuiltInTypeKind == BuiltInTypeKind.PrimitiveType ?
((PrimitiveType)memberType).ClrEquivalentType :
GetClrType(ocWorkspace, (EnumType)memberType);
if (!NullCanBeAssignedTo(clrType))
{
Facet facet;
if (member.TypeUsage.Facets.TryGetValue("Nullable", true, out facet))
{
if ((bool)facet.Value)
{
clrType = MakeNullable(clrType);
}
}
}
}
else
{
Debug.Assert(
memberType.BuiltInTypeKind == BuiltInTypeKind.EntityType || memberType.BuiltInTypeKind == BuiltInTypeKind.ComplexType,
"Complex or Entity type expected");
clrType = GetClrType(ocWorkspace, (StructuralType)memberType);
}
return(clrType);
}
private static string CreateDisplayName(EntityDataSourceReferenceGroup group, EdmProperty keyMember)
{
EntityDataSourceUtil.CheckArgumentNull(group, "group");
EntityDataSourceUtil.CheckArgumentNull(keyMember, "keyMember");
NavigationProperty navigationProperty;
string result;
if (EntityDataSourceUtil.TryGetCorrespondingNavigationProperty(group.End.CorrespondingAssociationEndMember, out navigationProperty))
{
result = navigationProperty.Name + "." + keyMember.Name;
}
else
{
// if there is no Navigation property, use the TargetTole and KeyMember name
// TargetRole.KeyMember
result = group.End.Name + "." + keyMember.Name;
}
return(result);
}
internal static string GetQualifiedEntitySetName(EntitySet entitySet)
{
EntityDataSourceUtil.CheckArgumentNull(entitySet, "entitySet");
// ContainerName.EntitySetName
return(entitySet.EntityContainer.Name + "." + entitySet.Name);
}
internal EntityDataSourcePropertyColumn(EntityDataSourceMemberPath memberPath)
: base(EntityDataSourceUtil.CheckArgumentNull(memberPath, "memberPath").GetDescription())
{
this.memberPath = memberPath;
}
protected EntityDataSourceReferenceGroup(AssociationSetEnd end)
{
EntityDataSourceUtil.CheckArgumentNull(end, "end");
this.end = end;
}
