private static SortedListAllowDupes <DatabaseColumn> GetMappedColumnsForConceptualProperty(ConceptualProperty property)
{
var columns = new SortedListAllowDupes <DatabaseColumn>(new DatabaseColumnComparer());
if (property != null)
{
foreach (var sp in property.GetAntiDependenciesOfType <ScalarProperty>())
{
// only want scalar props for a mapping fragment, not for an association set mapping
if (sp.Parent is MappingFragment)
{
if (sp.ColumnName.Target == null)
{
Debug.Fail("Null target for " + sp.ToPrettyString());
}
else
{
// in the situation where property is in multiple EntityTypeMappings (an inheritance
// hierarchy) there can be multiple ScalarProperty anti-dependencies of property
// (one for each EntityTypeMapping) all of which map to the same DatabaseColumn -
// in this case only insert the first of these
var dbCol = DatabaseColumn.CreateFromProperty(sp.ColumnName.Target);
if (!columns.Contains(dbCol))
{
columns.Add(dbCol);
}
}
}
}
}
return(columns);
}
internal static SortedListAllowDupes <AssociationPropertyIdentity> CreateIdentitiesFromAssociationEndProperty(EndProperty endProp)
{
var props = new SortedListAllowDupes <AssociationPropertyIdentity>(AssociationPropertyIdentityComparer.Instance);
foreach (var sProp in endProp.ScalarProperties())
{
var id = new AssociationPropertyIdentity();
var keyProperty = sProp.Name.Target as ConceptualProperty;
id.PrincipalColumns = GetMappedColumnsForConceptualProperty(keyProperty);
id.DependentColumns = new SortedListAllowDupes <DatabaseColumn>(new DatabaseColumnComparer());
var sSideProperty = sProp.ColumnName.Target;
if (null != sSideProperty)
{
var stc = DatabaseColumn.CreateFromProperty(sSideProperty);
id.DependentColumns.Add(stc);
props.Add(id);
}
}
return(props);
}
internal static SortedListAllowDupes <AssociationPropertyIdentity> CreateIdentitiesFromReferentialConstraint(
ReferentialConstraint referentialConstraint)
{
var principal = referentialConstraint.Principal;
var dependent = referentialConstraint.Dependent;
var identities = new SortedListAllowDupes <AssociationPropertyIdentity>(AssociationPropertyIdentityComparer.Instance);
if (principal != null &&
dependent != null)
{
// TODO: deal with case where counts differ.
if (principal.PropertyRefs.Count == dependent.PropertyRefs.Count)
{
var pPropRefs = principal.PropertyRefs.GetEnumerator();
var dPropRefs = dependent.PropertyRefs.GetEnumerator();
while (pPropRefs.MoveNext() &&
dPropRefs.MoveNext())
{
var pProp = pPropRefs.Current.Name.Target as ConceptualProperty;
var dProp = dPropRefs.Current.Name.Target as ConceptualProperty;
if (pProp != null &&
dProp != null)
{
var id = new AssociationPropertyIdentity();
id.PrincipalColumns = GetMappedColumnsForConceptualProperty(pProp);
id.DependentColumns = GetMappedColumnsForConceptualProperty(dProp);
identities.Add(id);
}
}
}
}
return(identities);
}
