There is one little note. If index has deletions then counters could
have wrong values...
mark harwood wrote:
This example code gets the unique terms for a field
and a total num docs for each...
String fieldName="myfield";
valueCounts=new ArrayList();
TermEnum termEnum;
termEnum = indexReader.terms(new Term(fieldName,""));
Term term = termEnum.term();
while (term!=null)
{
if (!fieldName.equals(term.field()))
{
break;
}
valueCounts.add(new ValueCount(term.text(),
termEnum.docFreq()));
if(!termEnum.next())
{
break;
}
term=termEnum.term();
}
class ValueCount implements Serializable
{
String value;
int docCount;
public ValueCount(String value,int docCount)
{
this.value=value;
this.docCount=docCount;
}
}
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regards,
Volodymyr Bychkoviak
