Hello,
>
> On 10/19/07, KÖLL Claus <[EMAIL PROTECTED]> wrote:
> > is there anybody who can give me a answer ?
>
> I looked at
> org.apache.jackrabbit.core.query.lucene.NodeIndexer and found
> the following snippet (starting at line 312 in current trunk):
>
> // never fulltext index jcr:uuid String
> if (name.equals(QName.JCR_UUID)) {
> addStringValue(doc, fieldName, value.getString(),
> false, false, DEFAULT_BOOST);
> } else {
> addStringValue(doc, fieldName, value.getString(),
> true, isIncludedInNodeIndex(name),
> getPropertyBoost(name));
> }
>
> So jcr:uuid is never fulltext indexed. I'm not sure why that
> is, Marcel?
Although I am not Marcel, I might be able to give a reason to not (never)
fulltext index uuid : fulltext is indexed according the analyzer you have
defined in your <SearchIndex> element, for example
<param name="analyzer"
value="org.apache.lucene.analysis.standard.StandardAnalyzer"/> (this is also
the default)
Now your uuid will get indexed, depending on this analyzer. Typically,
'4778158b-4de1-4ab9-9feb-a1f8987a830d' for example would be tokenized into
'4778158', 'b', '4', 'de', '1', etc etc. ("-" are ignored, and tokenized on
letters / numbers)
When using jcr:contains(jcr:uuid, '4778158b-4de1-4ab9-9feb-a1f8987a830d') in
xpath, the '4778158b-4de1-4ab9-9feb-a1f8987a830d' will be tokenized (parsed)
according the same fulltext analyzer into seperate tokens which will be
"AND"-ed in the search (see public Object visit(TextsearchQueryNode node,
Object data) in LuceneQueryBuilder).
So, you would get a hit if we fulltext index uuids and you would seach for
jcr:contains(jcr:uuid, '4778158b-4de1-4ab9-9feb-a1f8987a830d'), but you would
also get a hit for
jcr:contains(jcr:uuid, '4778158b-4de1-4ab9-9feb') or
jcr:contains(jcr:uuid, '4778158b-4de1') or
jcr:contains(jcr:uuid, '4778158b-a1f8987')
etc etc
So, fulltext indexing of a uuid really doesn't makes sense. If you are
interested to know more about indexing and searching, lucene in action book
might be a good starting point [1]
Regards Ard
[1] http://www.lucenebook.com/
>
> BR,
>
> Jukka Zitting
>
