Problems searching with INPATH

Question

hi,
i want to search in a table by INPATH where i saved my xml files as blobs.
searching with the contains query operator works fine, but the problem is, that i don't get any results if i try to search using INPATH in the contains query.
do i need special privileges for searching with INPATH, HASPATH and WITHIN?
is there a problem by saving xml files in a BLOB instead of a CBLOB or a XMLType?
here what i did:
i created the following table and inserted some xml files using java and the oracle-jdbc-driver:
create table xmldocs (docid number not null, title varchar2 (30), format varchar2(10), docblob blob);
i create my context index:
create index xmldocs_idx on xmldocs(docblob) indextype is ctxsys.context parameters
('datastore ctxsys.default_datastore filter ctxsys.null_filter section group ctxsys.path_section_group');
here an example of a xml file (with the docid=4) that i inserted:
<A><B><C>dog</C></B></A>
by searching for "dog" i receive a result:
select docid from xmldocs where contains(docblob, 'dog')>0;
DOCID
4
but if i search with INPATH i receive nothing:
select docid from xmldocs where contains(docblob, 'HASPATH(/A)')>0;
any ideas???

Answer 1

nevertheless, i know the difference between INPATH and HASPATH, that is not my problem.
so if i execute the statement:
select docid from xmldocs where contains(docblob,'dog INPATH (/A)')>0;
or
select docid from xmldocs where contains(docblob,'HASPATH (//A = "dog")')>0;
i receive "no rows selected", and that's my problem.
it seems that the index that should be used for searching with INPATH or HASPATH is not correct or not available. if i compare the token_texts of the index that generated by create index and the parameter ctxsys.path_section_group to an index generated without any parameters it's the same. should it be like this? is that regular?
i checked the indexes with:
select token_text from dr$xmldocs2_idx$i;
if i check the available indexes with:
select index_name, index_type, ityp_owner, ityp_name, domidx_opstatus
from user_indexes
where ityp_owner = 'CTXSYS';
i receive:
INDEX_NAME INDEX_TYPE ITYP_OWNER ITYP_NAME DOMIDX
XMLDOCS_IDX DOMAIN CTXSYS CONTEXT VALID
do i need any other database privileges than to ctxapp?
thanks a lot if somebody can help me!!!
randy