/// <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;
}
}
}
}
/// <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;
}
}
}
}
public LinqToEntitiesMetadataProvider(Type contextType, MetadataProvider parent, bool isDbContext)
: base(parent)
{
_isDbContext = isDbContext;
_typeDescriptionContext = _tdpContextMap.GetOrAdd(contextType, type =>
{
// create and cache a context for this provider type
return new LinqToEntitiesTypeDescriptionContext(contextType, _isDbContext);
});
}
public LinqToEntitiesMetadataProvider(Type contextType, MetadataProvider parent, bool isDbContext)
: base(parent)
{
_isDbContext = isDbContext;
_typeDescriptionContext = _tdpContextMap.GetOrAdd(contextType, type =>
{
// create and cache a context for this provider type
return(new LinqToEntitiesTypeDescriptionContext(contextType, _isDbContext));
});
}
