what's the reason for problem "Tuple did not exist"?

[tarbin jiang]

all,
when I insert a record which including a TEXT type column, it returns error: 
com.mysql.cluster.ndbj.NdbApiPermanentException: Tuple did not exist.
I found that if I set the TEXT type column as a formal string, it works without error.
but if I set the Text type column as a xml file, the error pops.
The procedure of reading xml file is no problem. And I used NDBBlob type to handle text
type.
 
insertOperation.setValue(xmlFile.bytes())
 
can anybody help me?
thanks from tarbin
 
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