Custom search in own SearchComponent

[Moritz Schmidt]

Hi there,

I’m working on a custom SearchComponent to add some docs to the response with 
another filter query than in the original request.
Here is what I currently have:

public void process(ResponseBuilder rb) throws IOException {
    if(rb.getResults() != null) {
      QueryParser queryParser = new QueryParser("name", new StandardAnalyzer());
      Query query = null;
      try {
        query = queryParser.parse("text_tg:" + rb.getQueryString());
      } catch (ParseException e) {
          e.printStackTrace();
      }

      TopDocs additionalDocs = rb.req.getSearcher().search(query, 5);
      ScoreDoc[] scoreDocs = additionalDocs.scoreDocs;
      System.out.println(additionalDocs.scoreDocs.length);
      ArrayList<Document> specialDocs = new ArrayList<Document>();

      for(int i = 0; i < scoreDocs.length; i++) {
        Document doc = rb.req.getSearcher().doc(scoreDocs[i].doc);
        specialDocs.add(doc);
      }

      rb.rsp.add("special_responses", specialDocs);
    }
  }

This works fine but doesn’t filter the results.
As soon as I add something like ‘ AND product_type:106’ in the query, use 
getDocList(Query query, Query filter, Sort lsort, int offset, int len) or a 
BooleanQuery a la:
Query query = null;
Query filterQuery = null;
try {
  filterQuery = queryParser.parse("product_type:106");
  query = queryParser.parse("text_tg:" + rb.getQueryString());
} catch (ParseException e) {
    e.printStackTrace();
}

BooleanClause queryClause = new BooleanClause(query, 
BooleanClause.Occur.SHOULD);
BooleanClause filterClause = new BooleanClause(filterQuery, 
BooleanClause.Occur.FILTER);

BooleanQuery.Builder builder = new BooleanQuery.Builder();
builder.add(queryClause);
builder.add(filterClause);
BooleanQuery bQuery = builder.build();

TopDocs additionalDocs = rb.req.getSearcher().search(bQuery, 5);

I get 0 results.

Does anyone know what I am doing wrong?

Thanks in advance and best regards,

Moritz Schmidt

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