/// <summary>
/// Declares 'relationship' members for a type.
/// That is, all forward or reverse relationships that can connect to this type at one end or the other.
/// </summary>
/// <param name="entityType">The type entity.</param>
/// <param name="memberGroup">The XSD container that will hold the members.</param>
private void AddTypeRelationships(EffectiveType entityType, XmlSchemaGroupBase memberGroup)
{
// Define relationships applicable to type
// This is defining that a given relationship container can appear under a resource of a particular type
// e.g. <xs:element ref="worksFor" minOccurs="0" maxOccurs="1"/>
// Note: maxOccurs refers to the relationship container, not the cardinality of the relationship itself.
var relationships =
from type in _schemaManager.GetAncestors(entityType.Type)
from relationshipDefn in _schemaManager.GetRelationshipsToEntity(type, A(Aliases.FromType))
select new { Relationship = relationshipDefn, Alias = relationshipDefn.Alias };
var relationshipsRev =
from type in _schemaManager.GetAncestors(entityType.Type)
from relationshipDefn in _schemaManager.GetRelationshipsToEntity(type, A(Aliases.ToType))
select new { Relationship = relationshipDefn, Alias = relationshipDefn.ReverseAlias };
HashSet <XmlQualifiedName> hash = new HashSet <XmlQualifiedName>();
foreach (var rel in relationships.Concat(relationshipsRev))
{
if (rel.Alias == null || string.IsNullOrEmpty(rel.Alias.Value))
{
continue;
}
var fieldElem = new XmlSchemaElement();
fieldElem.MaxOccurs = 1; // the relationship container, not the relationships themselves
fieldElem.MinOccurs = 0;
fieldElem.RefName = NameUsed(rel.Alias.ToQualifiedName());
if (hash.Contains(fieldElem.RefName))
{
throw new Exception("Already used: " + fieldElem.RefName.ToString()); // note: this can also get triggered if an inline-relationship defines a fromType node.
}
hash.Add(fieldElem.RefName);
memberGroup.Items.Add(fieldElem);
}
}