Indexing external files (XML) - problem!

Question

Hi there,
I have some difficulties to get Intermedia index my external xml-files - indeed, the query does not work properly:
create table dummytable
(id number primary key,
docs varchar2(2000));
insert into dummytable values
(111,'book1.xml');
insert into dummytable values
(112,'book2.xml');
begin
ctx_ddl.drop_preference('COMMON_DIR');
ctx_ddl.create_preference
('COMMON_DIR','FILE_DATASTORE');
ctx_ddl.set_attribute
('COMMON_DIR','PATH','r:\mydocs');
ctx_ddl.create_section_group
('dummy_sections', 'XML_SECTION_GROUP');
ctx_ddl.add_zone_section
('dummy_sections', 'titlesec', 'Title');
ctx_ddl.add_zone_section
('dummy_sections', 'authorsec', 'Author');
ctx_ddl.create_preference
('dummy_basic_lexer','basic_lexer');
ctx_ddl.set_attribute
('dummy_basic_lexer','index_text','true');
ctx_ddl.set_attribute
('dummy_basic_lexer','index_themes','false');
end;
create index dummyindex on dummytable(docs)
indextype is ctxsys.context
parameters ('datastore COMMON_DIR
lexer dummy_basic_lexer
SECTION GROUP dummy_sections');
select id from dummytable where contains
(docs,'LeCarre WITHIN authorsec')>0;
This example is taken out of "Oracle XML Handbook".
book1.xml:
<Book>
<Id>4</Id>
<Author>John LeCarre</Author>
<Title>The Night Manager</Title>
</Book>
Although the select statement should print out '111', it does not?!?
A query for 'LeCarre' (without authorsec) is successful!
Does anybody can help me?
Thanks a lot in advance!!
Achim

Answer 1

See "2. Reading a file" in How To : Read and Write Office 2003 Excel XML Files | Odie's Oracle Blog
You can use the external table (or SQL*Loader) to bulk load all files at once in a binary XMLType table, and then using XMLTable to query the content.
There's another way I've been exploring recently, involving the external table preprocessor and XSLT, but it only performs well in the latest 12.1 release.
You can read more here if interested : XMLTABLE vs. External XSLT preprocessor | Odie's Oracle Blog
But for your current requirement, an XMLTable query as described in the first link should be just fine.