private string DiscriminatorFilterFragment(string alias)
{
if (NeedsDiscriminator)
{
InFragment frag = new InFragment();
if (IsDiscriminatorFormula)
{
frag.SetFormula(alias, DiscriminatorFormulaTemplate);
}
else
{
frag.SetColumn(alias, DiscriminatorColumnName);
}
string[] subclasses = SubclassClosure;
for (int i = 0; i < subclasses.Length; i++)
{
IQueryable queryable = (IQueryable)Factory.GetEntityPersister(subclasses[i]);
if (!queryable.IsAbstract)
frag.AddValue(queryable.DiscriminatorSQLValue);
}
StringBuilder buf = new StringBuilder(50).Append(" and ").Append(frag.ToFragmentString().ToString());
return buf.ToString();
}
else
{
return string.Empty;
}
}
private string DiscriminatorFilterFragment(string alias)
{
const string abstractClassWithNoSubclassExceptionMessageTemplate =
@"The class {0} can't be instatiated and does not have mapped subclasses;
possible solutions:
- don't map the abstract class
- map the its subclasses.";
if (NeedsDiscriminator)
{
InFragment frag = new InFragment();
if (IsDiscriminatorFormula)
{
frag.SetFormula(alias, DiscriminatorFormulaTemplate);
}
else
{
frag.SetColumn(alias, DiscriminatorColumnName);
}
string[] subclasses = SubclassClosure;
int validValuesForInFragment = 0;
foreach (string t in subclasses)
{
var queryable = (IQueryable) Factory.GetEntityPersister(t);
if (!queryable.IsAbstract)
{
frag.AddValue(queryable.DiscriminatorSQLValue);
validValuesForInFragment++;
}
}
if(validValuesForInFragment == 0)
{
throw new NotSupportedException(string.Format(abstractClassWithNoSubclassExceptionMessageTemplate, subclasses[0]));
}
StringBuilder buf = new StringBuilder(50).Append(" and ").Append(frag.ToFragmentString().ToString());
return buf.ToString();
}
else
{
return string.Empty;
}
}
private SqlString DiscriminatorWhereCondition(string alias)
{
InFragment frag = new InFragment()
.SetColumn(alias, DiscriminatorColumnName);
if (IsDiscriminatorFormula)
{
frag.SetFormula(alias, DiscriminatorFormulaTemplate);
}
else
{
frag.SetColumn(alias, DiscriminatorColumnName);
}
System.Type[] subclasses = SubclassClosure;
for (int i = 0; i < subclasses.Length; i++)
{
IQueryable queryable = (IQueryable) Factory.GetEntityPersister(subclasses[i]);
frag.AddValue(queryable.DiscriminatorSQLValue);
}
return frag.ToFragmentString();
}
