CAML query that includes folders in result set - sharepoint

Question

I'm trying to write a CAML query that executes against a specific SPList, scoped to a specific folder, recursive from that point, and returns all ListItems (which meet a criteria) and Folders.
Here's the code for the query which seems like it should work (formatted for readability):
SPQuery query = new SPQuery();
query.Query = "
<Where>
<Or>
<Contains>
<FieldRef Name=\"FileRef\" />
<Value Type=\"Text\">foo</Value>
</Contains>
<Eq>
<FieldRef Name=\"FSObjType\" />
<Value Type=\"Lookup\">1</Value>
</Eq>
</Or>
</Where>";
query.ViewFields = "
<FieldRef Name=\"CustomField1\" Nullable=\"TRUE\" />
<FieldRef Name=\"CustomField2\" Nullable=\"TRUE\" />
<FieldRef Name=\"CustomField3\" Nullable=\"TRUE\" />
";
query.RowLimit = 500;
query.ViewAttributes = "Scope=\"RecursiveAll\"";
query.Folder = startingFolder;
DataTable dt = myList.GetItems(query).GetDataTable();
So - this only returns the ListItems - no folders.
If I remove the other conditions from the query, only leaving the FSObjType=1, I get a COM exception "Cannot complete this action. Please try again."
If I then remove the ViewFields, leaving only the Scope=RecursiveAll and FSObjType=1, I get an empty result set back.

Answer 1

Everyone is close, but not quite right.
using (SPSite site = new SPSite("http://server/site"))
{
SPWeb web = site.RootWeb; // See disposal guidance http://blogs.msdn.com/b/rogerla/archive/2008/10/04/updated-spsite-rootweb-dispose-guidance.aspx
SPQuery query = new SPQuery();
query.Query = #"
<Where>
<BeginsWith>
<FieldRef Name='ContentTypeId' />
<Value Type='ContentTypeId'>0x0120</Value>
</BeginsWith>
</Where>";
query.ViewAttributes = "Scope='RecursiveAll'";
SPList list = web.Lists[listId];
SPListItemCollection items = list.GetItems(query);
// Do stuff with your folders
}
First of all, using this FieldRef is wrong:
<FieldRef Name='ContentType' /><Value Type='Text'>Folder</Value>
because the folder content type can be inherited. Therefore, you need to compare against the content type ID, like this:
<Where>
<BeginsWith>
<FieldRef Name='ContentTypeId' />
<Value Type='ContentTypeId'>0x0120</Value>
</BeginsWith>
</Where>
And then, set the view attribute Scope to RecursiveAll
<View Scope='RecursiveAll'>...</View>
That should return any item whose content type inherits from Folder (0x0120)

Answer 2

I don't have my dev image to test against, so I might need to revise this later; but I think you could try
query.ViewAttributes = "Scope=\"Recursive\"";
Retrieving the items will allow you to use SPUtility.GetUrlDirectory(url) to get the folder path for a given item, and parse the folder hierarchy from there.

Answer 3

You could try basing your caml query on the Folder Content Type instead,
<FieldRef Name='ContentType' /><Value Type='Text'>Folder</Value>
whilst keeping the
Query.ViewAttributes = "Scope=\"RecursiveAll\"";

Answer 4

I've solved this putting:
<QueryOptions>
<IncludeAttachmentUrls>True</IncludeAttachmentUrls>
<Folder/> </QueryOptions>
As query option
I found my question about it on stack overflow:
How can I iterate recursively though a sharepoint list using webservices?

Answer 5

If I remove the other conditions from the query, only leaving the FSObjType=1, I get a COM exception "Cannot complete this action. Please try again."
Did you remove the <Or> tags when you did this? If not it will not run correctly.
Regardless, that does not solve your problem. Have you tried leaving the query empty? Does it return anything?
I have been working on something similar and ran into an issue as well, perhaps it's somewhat related.

Answer 6

This still seems to an issue in SP 2010. Here's workaround code that will work for 2007 or 2010, based on this MSDN Forums post that uses the web services:
private static SPListItem RecurseIntoFolders(SPList list, SPFolder parentFolder, string fileReference)
{
var query = new SPQuery
{
Query = "<Where>" +
"<Eq><FieldRef Name='FSObjType'/><Value Type='Lookup'>1</Value></Eq>" +
"</Where>",
ViewFields = String.Format("<FieldRef Name='{0}' />", FileReferenceInternalFieldName),
ViewAttributes = "Scope='RecursiveAll'",
Folder = parentFolder
};
var items = list.GetItems(query);
if (items.Count == 0)
return null;
foreach (SPListItem item in items)
{
parentFolder = item.Folder;
// TODO: Any other checking that this is the item we want
return item;
}
return RecurseIntoFolders(list, parentFolder, fileReference);
}

Answer 7

static string GetParentFolder(SPListItem itemToFind, SPFolder folder)
{
SPQuery query = new SPQuery();
// query.Query = "<OrderBy><FieldRef Name='Title'/></OrderBy>";
query.Query = "<Where><Eq><FieldRef Name=\"ID\"/><Value Type=\"Integer\">"+ itemToFind.ID +"</Value></Eq></Where>";
query.Folder = folder;
query.ViewAttributes = "Scope=\"Recursive\"";
SPListItemCollection items = itemToFind.ParentList.GetItems(query);
int intpartentFolderID=0 ;
if (items.Count > 0)
{
foreach (SPListItem item in items)
{
SPFile f = item.Web.GetFile(item.Url);
string test11 = f.ParentFolder.Name;
intpartentFolderID = f.ParentFolder.Item.ID;
//string test1 = item.File.ParentFolder.Name;
return (intpartentFolderID.ToString());
}
}
return (intpartentFolderID.ToString());
}