public void AssertAtLeastOne(IObject association, params RoleType[] roleTypes)
{
foreach (var roleType in roleTypes)
{
if (association.Strategy.ExistRole(roleType.RelationType))
{
return;
}
}
this.AddError(new DerivationErrorAtLeastOne(this, DerivationRelation.Create(association, roleTypes)));
}
public void AssertExistsAtMostOne(IObject association, params RoleType[] roleTypes)
{
var count = 0;
foreach (var roleType in roleTypes)
{
if (association.Strategy.ExistRole(roleType.RelationType))
{
++count;
}
}
if (count > 1)
{
this.AddError(new DerivationErrorAtMostOne(this, DerivationRelation.Create(association, roleTypes)));
}
}
public void AssertAreEqual(IObject association, RoleType roleType, RoleType otherRoleType)
{
var value = association.Strategy.GetRole(roleType.RelationType);
var otherValue = association.Strategy.GetRole(otherRoleType.RelationType);
bool equal;
if (value == null)
{
equal = otherValue == null;
}
else
{
equal = value.Equals(otherValue);
}
if (!equal)
{
this.AddError(new DerivationErrorEquals(this, DerivationRelation.Create(association, roleType, otherRoleType)));
}
}