/// <summary>
/// Creates a new instance
/// </summary>
/// <param name="context">The linq to entities context owning this entity</param>
/// <param name="entityType">The entity type in the EDM model</param>
/// <param name="type">The CLR type of the entity</param>
public LinqToEntitiesEntity(LinqToEntitiesContextBase context, EntityType entityType, Type type)
: base(context, entityType.Name, type)
{
this._hasTimestampMember = entityType.Members.Count(p => ObjectContextUtilities.IsConcurrencyTimestamp(p)) == 1;
this._entityType = entityType;
this._isDbContext = context is LinqToEntitiesDbContext;
}
/// <summary>
/// Constructor taking a metadata context, an structural type, and a parent custom type descriptor
/// </summary>
/// <param name="typeDescriptionContext">The <see cref="LinqToEntitiesTypeDescriptionContext"/> context.</param>
/// <param name="edmType">The <see cref="StructuralType"/> type (can be an entity or complex type).</param>
/// <param name="parent">The parent custom type descriptor.</param>
public LinqToEntitiesTypeDescriptor(LinqToEntitiesTypeDescriptionContext typeDescriptionContext, StructuralType edmType, ICustomTypeDescriptor parent)
: base(parent)
{
_typeDescriptionContext = typeDescriptionContext;
_edmType = edmType;
EdmMember[] timestampMembers = _edmType.Members.Where(p => ObjectContextUtilities.IsConcurrencyTimestamp(p)).ToArray();
if (timestampMembers.Length == 1)
{
_timestampMember = timestampMembers[0];
}
if (edmType.BuiltInTypeKind == BuiltInTypeKind.EntityType)
{
// if any FK member of any association is also part of the primary key, then the key cannot be marked
// Editable(false)
EntityType entityType = (EntityType)edmType;
_foreignKeyMembers = new HashSet <EdmMember>(entityType.NavigationProperties.SelectMany(p => p.GetDependentProperties()));
foreach (EdmProperty foreignKeyMember in _foreignKeyMembers)
{
if (entityType.KeyMembers.Contains(foreignKeyMember))
{
_keyIsEditable = true;
break;
}
}
}
}