Reengineer SQL into SubSonic LINQ - subsonic

Question

I have 11 records in the Menu table, only 1 with a PageID set however if I use
var test = Menu.All().Where(
x => x.WebPages.Any(
pages => pages.Roles.Contains(Roles.GetRolesForUser()[0])
I get 11 records as the SQL run is this
SELECT [t0].[CategoryID], [t0].[CreatedBy], [t0].[CreatedOn],
[t0].[ID], [t0].[ImageID], [t0].[ImageIDHover], [t0].[Locale],
[t0].[ModifiedBy], [t0].[ModifiedOn], [t0].[OrderID], [t0].[PageID],
[t0].[ParentID], [t0].[Title], [t0].[URL], [t0].[Visible]
FROM [dbo].[Menu] AS t0
WHERE EXISTS(
SELECT NULL
FROM [dbo].[WebPage] AS t1
WHERE ([t1].[Roles] LIKE '%' + 'User' + '%')
)
If I run this I get the 1 record
var test = Menu.All().Where(
x => x.WebPages.Any(
pages => pages.Roles.Contains(
Roles.GetRolesForUser()[0]) && pages.ID == x.PageID));
The SQL for this is
SELECT [t0].[CategoryID], [t0].[CreatedBy], [t0].[CreatedOn],
[t0].[ID], [t0].[ImageID], [t0].[ImageIDHover], [t0].[Locale],
[t0].[ModifiedBy], [t0].[ModifiedOn], [t0].[OrderID], [t0].[PageID],
[t0].[ParentID], [t0].[Title], [t0].[URL], [t0].[Visible]
FROM [dbo].[Menu] AS t0
WHERE EXISTS (
SELECT NULL
FROM [dbo].[WebPage] AS t1
WHERE (([t1].[Roles] LIKE '%' + 'User' + '%') AND
([t1].[ID] = [t0].[PageID]))
)
The problem with Any() is that in the SQL as long as one record exits, doesn't matter which record it will return data.
I think effectively I am wanting an UNION SQL like below but I don't know how I re-engineer that into C#/Subsonic
select m.* from menu m where pageid is null
union
select m.* from menu m
join webpage p
on p.id = m.pageid
where p.roles like '%User%'
I want to return all menu records and for those with a PageID set that the corresponding WebPage has the user's role in it. If the user's role is not in the WebPage then I don't want to see it in my results.
Here are my cutodwn classes that Subsonic generates
public partial class Menu: IActiveRecord
{
public int ID {get; set;}
public int CategoryID {get;set;}
public bool Visible {get;set;}
public int PageID {get;set;}
public IQueryable<WebPage> WebPages
{
get
{
var repo=NorthCadburyWebsite.Models.WebPage.GetRepo();
return from items in repo.GetAll()
where items.ID == _PageID
select items;
}
}
}
public partial class WebPage: IActiveRecord
{
public int ID {get;set;}
public string Roles {get;set;}
}

Answer 1

It sure seems like you could just add an alternative test to the where clause to do this.
var test = Menu.All()
.Where(x => x.PageID == null
|| x.WebPages
.Any(pages => pages.Roles.Contains(Roles.GetRolesForUser()[0])
&& pages.ID == x.PageID));
EDIT:
Try using the the Intersect method to see if there is an overlap between the roles in the DB and the roles for the user.
var test = Menu.All()
.Where(x => x.PageID == null
|| x.WebPages
.Any(pages => pages.Roles.Intersect(Roles.GetRolesForUser().Split(','))
&& pages.ID == x.PageID));