Lucene。 如何计算每个文档的点击数？

Question

At StackOverflow I found this one In a Lucene / Lucene.net search, how do I count the number of hits per document?

But I can not define SpanQuery from code below. I'm using Lucene 4.4.0(spanquery defining is different than older versions)

IndexReader indexReader = // define your index reader here
SpanQuery spanQuery = // define your span query here
Spans spans = spanQuery.getSpans(indexReader);
int occurrenceCount = 0;
while (spans.next()) {
    occurrenceCount++;
}

Anybody can help? I would really appreciate full answer with an example

Answer 1

The easier way to get the total number of occurances of a term in the index, as per the linked-to answer, would be:

Term term = new Term("myfield", "myterm");
long numOccurances = indexReader.totalTermFreq(term);

Answer 2

For example

SpanQuery spanQuery = new SpanTermQuery(new Term("myfield", "myterm"); // define your span query here`enter code here`

can be used when you are interested in a single term (This example looks for the term "myterm" in the field "myfield").

Look at the other SpanQuery implementations also (SpanOrQuery, SpanNearQuery, SpanNotQuery, ...)