Indexing on text() of a node

Hi All,
might have overlooked it but can't find a way to do the above?
I have about 30k documents containing something similar to:
<aaa>
<bbb>
<region>One</region>
<region>Two</region>
</bbb>
</aaa>
Now adding an index:
addIndex "" region node-element-equality-string
Doesnt improve the search times for xpaths like:
//region/text()="One" very much, about 4 secs.
However, if i reconstruct the document to:
<aaa>
<bbb>
<region id="One"/> ...etc.
And create an index:
addIndex "" id node-attribute-equality-string
The search time is improved to about 0.06secs.. which is more what i had in mind.
Any pointers?
Michel Onstein
http://www.beautyinnederland.nl

Michael,
This FAQ entry will explain more about the use of "text()":
http://www.oracle.com/technology/products/berkeley-db/faq/xml_faq.html#42
John

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Indexing on text() of a node

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