ImplementedByAllExpression ToIBA(Expression node, Type type)
{
if (node.IsNull())
{
return(new ImplementedByAllExpression(type,
Expression.Constant(null, typeof(string)),
new TypeImplementedByAllExpression(new PrimaryKeyExpression(Expression.Constant(null, PrimaryKey.Type(typeof(TypeEntity))))), null));
}
if (node is EntityExpression e)
{
return(new ImplementedByAllExpression(type,
new SqlCastExpression(typeof(string), e.ExternalId.Value),
new TypeImplementedByAllExpression(new PrimaryKeyExpression(QueryBinder.TypeConstant(e.Type))), null));
}
if (node is ImplementedByExpression ib)
{
return(new ImplementedByAllExpression(type,
new PrimaryKeyExpression(QueryBinder.Coalesce(ib.Implementations.Values.Select(a => a.ExternalId.ValueType.Nullify()).Distinct().SingleEx(), ib.Implementations.Select(e => e.Value.ExternalId))),
new TypeImplementedByAllExpression(new PrimaryKeyExpression(
ib.Implementations.Select(imp => new When(imp.Value.ExternalId.NotEqualsNulll(), QueryBinder.TypeConstant(imp.Key))).ToList()
.ToCondition(PrimaryKey.Type(typeof(TypeEntity)).Nullify()))), null));
}
if (node is ImplementedByAllExpression iba)
{
return(iba);
}
throw new UnexpectedValueException(node);
}
