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From "Kurt Verduyckt" <k...@modulo1.be>
Subject nt:resource nodes and versioning/textfiltering
Date Thu, 10 Nov 2005 12:30:46 GMT
Hi all,
I have some troubles regarding the following situation:
I'm writing an application that needs to store some xml content which needs
to be versioned and searchable on some -not all- of those xml fields. So my
best guess was to use the nt:resource node, add a mixin type mix:versionable
to do the versioning and store the xml data in the jcr:data property. This
should allow me to write a custom textfilter to filter the xml content and
index only those xml fields that I'm interested in for searching, right?
Now these are the problems I'm having:
1) first of all I noticed that when I make the nt:resource node versionable,
the node somehow loses the jcr:data content after a checkIn operation... and
only transfers it to the frozen node of the baseversion. Is this normal?
What really troubles my is if I close the application (properly) and
restart, doing a dump of the jcr contents, the jcr:data is filled again...
so it seems it is kept in the session somewhere, but only persisted after a
repository close operation... 
the code sample (with just 'text/plain' mimetype for now because I don't
have a custom filter yet):

Node content = rootnode.addNode("myns:xmlcontent","nt:resource");
content.addMixin("mix:versionable"); //apparently performs a checkout behind
the scenes
content.setProperty("jcr:mimeType", "text/plain");
content.setProperty("jcr:encoding", "");
content.setProperty("jcr:data", xmlData2stream(xmlData));
content.setProperty("jcr:lastModified", Calendar.getInstance ());

//debugging showed that at this point jcr:data is filled with content but
//debugging showed that at this point jcr:data field is cleared! Until
restart of the application, then the node contains data again ?!?

so to retrieve the jcr:data field while running, the only way to find it for
now is find the node, get the baseversion, get the frozennode under it and
get the jcr:data field from there... but this doesn't feel quite right does
2) to search for a node with a certain text content (inside the jcr:data,
which should be indexed by the textfilter), I guess I need to write an Xpath
query... the only thing is I can't find any example on the net. My own best
shot was something like this:

Query q = qm.createQuery("//myns:xmlcontent[jcr:contains(.,'" + searchtext +
"')]", Query.XPATH);

but this returns no results... maybe this is just because of the problem
stated in 1) ?
Anybody who knows what I might be doing wrong?
Kind regards,


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