FieldSelector with Lucene 2.3.2

[Chris Bamford]

Hi

I am trying to speed up access to the data in my results Documents and 
was wondering if FieldSelector might be the way forward?    After my 
search, I end up with an ArrayList of Documents, from each of which I 
need to extract certain fields and their values as key/value pairs in a 
HashMap.   Normally this is quick, but with large data sets (10,000+) it 
can take several seconds.  Here is the essence of the current code:

            for (Document doc : resultDocs) {
                keyVals = getDocKeyValuePairs(doc, fields);
                if (keyVals != null) {
                    resultsList.add(keyVals);
                }
            }

    private HashMap getDocKeyValuePairs(Document doc, List<String> 
fields) {

        HashMap keyValMap = new HashMap();
        String field;
        String value;

        for(int i = 0; i < fields.size(); i++) {
            field = fields.get(i);
            value = doc.get(field);

            if (value != null) {
                keyValMap.put(field, value);
            }
        }

        return keyValMap;
    }

I am aware that this code may not be efficient, so any suggestions 
welcomed.  Also, how would one apply a FieldSelector in this case?

Thanks

- Chris


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