Query on Resource_View

Question

I have a function that accepts an xmltype (pXml) as an agrument and will return the Resource Type (Link(L), File(D), or Folder(F)). The first part of the function works fine:
EXTRACTVALUE(pXML, '/Resource/XMLRef') IS NULL
EXTRACTVALUE(pXML, '/Resource/RefCount') = '01'
I return an "F" for the first test and an "D" for the second test. However, when a link is involved, I am getting problems, different ones for different approaches. I need to relate the passed in pXml (an xmltype) to the Resource_View. The simpliest(I thought) approach was this query to get a unique identifier from the Resource_View:
FOR ResT IN
(SELECT ResId
FROM Resource_View
WHERE EXTRACTVALUE(Res, '/Resource/XMLRef') = EXTRACTVALUE(pXml, '/Resource/XMLRef'))
LOOP
vResId := ResT.ResId;
EXIT;
END LOOP;
The above fails with:
ORA-00932: inconsistent datatypes: expected REF got CHAR
ORA-06512: at "LEGALSERVICES.GETRESTYPE_FUN", line 37
Apparently I am NOT dealing with the same datatype. Somehow the extractvalue method operates differently on Resource_View.ResId and pXml. How can I extract some identifier from pXml to relate against the resource view? I can also use an Object_Id(SYS_NC_ROWINFO$) because I ultimately will query against the xdb.xdb$resource to resolve the irksome problem whereby the extracted display name and xmlref values are identical for both a link its target file. I just need some unique identifier from the passed in xml document. I also could use a path if that can be somehow extracted from the passed in xml document (document already in the xdb repository).

Answer 1

I think you will have to do a hexToRef when pworking with pXML