/// <summary>
/// See whether the ReferentialConstraintIdentity otherRci contains a "covering" for this
/// i.e. for each AssociationPropertyIdentity in this._propertyIdentities see whether
/// otherRci._propertyIdentities contains a principal->dependent mapping which has
/// at least the same principal DatabaseColumns (but possibly more) _and_ at least
/// the same dependent DatabaseColumns (but possibly more).
/// This allows for treating these ReferentialConstraintIdentity's as identical for the purposes
/// of Update Model even if a given C-side property has been mapped to more than 1 S-side property.
/// </summary>
internal bool IsCoveredBy(ReferentialConstraintIdentity otherRci)
{
foreach (var thisApi in _propertyIdentities)
{
var foundCoveringApi = false;
if (null != otherRci)
{
foreach (var otherApi in otherRci._propertyIdentities)
{
if (thisApi.IsCoveredBy(otherApi))
{
// have found an AssociationPropertyIdentity in other._propertyIdentities which covers thisApi
foundCoveringApi = true;
break;
}
}
}
if (false == foundCoveringApi)
{
// no covering AssociationPropertyIdentity was found for thisApi in
// other._propertyIdentities
return(false);
}
}
// all AssociationPropertyIdentity's in this._propertyIdentities were covered by
// AssociationPropertyIdentity's in otherRci._propertyIdentities
return(true);
}
internal static ReferentialConstraintIdentity CreateReferentialConstraintIdentity(ReferentialConstraint referentialConstraint)
{
if (referentialConstraint == null)
{
Debug.Fail("null referential constraint");
}
else
{
var rcid = new ReferentialConstraintIdentity();
rcid._propertyIdentities = AssociationPropertyIdentity.CreateIdentitiesFromReferentialConstraint(referentialConstraint);
return(rcid);
}
return(null);
}
private AssociationIdentityForReferentialConstraint(ReferentialConstraint rc)
{
_referentialConstraintIdentity = ReferentialConstraintIdentity.CreateReferentialConstraintIdentity(rc);
}