public void Add(EdmEntitySet entitySet, EdmEntityType entityType)
{
Contract.Requires(entitySet != null);
Contract.Requires(entityType != null);
var i = 0;
List<EdmEntityType> entityTypes;
if (!_entityTypes.TryGetValue(entitySet, out entityTypes))
{
entityTypes = new List<EdmEntityType>();
_entityTypes.Add(entitySet, entityTypes);
}
for (; i < entityTypes.Count; i++)
{
if (entityTypes[i] == entityType)
{
return;
}
else if (entityType.IsAncestorOf(entityTypes[i]))
{
break;
}
}
entityTypes.Insert(i, entityType);
}
private void MarkColumnsAsNonNullableIfNoTableSharing(
EdmEntitySet entitySet, DbTableMetadata table, EdmEntityType dependentEndEntityType,
IEnumerable<DbTableColumnMetadata> columns)
{
// determine if base entities share this table, if not, the foreign keys can be non-nullable
var mappedBaseTypes =
_tableMappings[table].EntityTypes.GetEntityTypes(entitySet).Where(
et =>
et != dependentEndEntityType &&
(et.IsAncestorOf(dependentEndEntityType) || !dependentEndEntityType.IsAncestorOf(et)));
if (mappedBaseTypes.Count() == 0
|| mappedBaseTypes.All(et => et.IsAbstract))
{
columns.Each(c => c.IsNullable = false);
}
}
public void IsAncestorOf_should_return_correct_answer()
{
var entityType1 = new EdmEntityType { Name = "E1" };
var entityType2 = new EdmEntityType { Name = "E2" };
entityType2.BaseType = entityType1;
var entityType3 = new EdmEntityType { Name = "E3" };
entityType3.BaseType = entityType1;
var entityType4 = new EdmEntityType { Name = "E4" };
entityType4.BaseType = entityType2;
Assert.True(entityType1.IsAncestorOf(entityType4));
Assert.False(entityType3.IsAncestorOf(entityType4));
}
