On 20/12/2011 19:38, Paul Taylor wrote:
So I had this code, that would return all documents where there was
more than one document that had the same value for fieldname. Trouble
is I didn't realise this could return documents
that had been deleted, so Im wondering what an equivalent using
queries would be.
public List<Integer> getDuplicates(int columnModelId)
{
String fieldname = String.valueOf(columnModelId);
List<Integer> matches = new ArrayList<Integer>();
if (AudioDataModel.getInstance().getRowCount() == 0)
{
return matches;
}
IndexReader ir;
try
{
ir = getIndexReader();
TermEnum terms = ir.terms(new Term(fieldName, ""));
do
{
if (terms.term() != null)
{
if (terms.docFreq() > 1)
{
TermDocs termDocs = ir.termDocs(terms.term());
while (termDocs.next())
{
Document d = ir.document(termDocs.doc());
matches.add(new
Integer(d.getFieldable(ROW_NUMBER).stringValue()));
}
}
}
}
while (terms.next() &&
terms.term().field().equals(fieldName));
}
catch (IOException ioe)
{
MainWindow.logger.log(Level.WARNING, "DataIndexer.Problem
searching for duplicates:" + ioe.getMessage(), ioe);
}
return matches;
FYI
I stuck with this code but added the IndexReader.isDeleted() check to
ensure the doc was still valid
Paul
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