Simple Payload Query Parser (Solr/Lucene)

PayloadQParserPlugin.java

import org.apache.commons.lang.StringUtils;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.BooleanClause.Occur;
import org.apache.lucene.search.payloads.AveragePayloadFunction;
import org.apache.lucene.search.payloads.PayloadTermQuery;
import org.apache.solr.common.params.SolrParams;
import org.apache.solr.common.util.NamedList;
import org.apache.solr.request.SolrQueryRequest;
import org.apache.solr.search.QParser;
import org.apache.solr.search.QParserPlugin;
import org.apache.solr.search.SyntaxError;

/**
 * Parser plugin to parse payload queries.
 */
public class PayloadQParserPlugin extends QParserPlugin {

  @Override
  public QParser createParser(String qstr, SolrParams localParams,
      SolrParams params, SolrQueryRequest req) {
    return new PayloadQParser(qstr, localParams, params, req);
  }

  @Override
  public void init(NamedList args) {
  }
}

class PayloadQParser extends QParser {

  public PayloadQParser(String qstr, SolrParams localParams, SolrParams params,
      SolrQueryRequest req) {
    super(qstr, localParams, params, req);
  }

  @Override
  public Query parse() throws SyntaxError {
    BooleanQuery q = new BooleanQuery();
    String[] nvps = StringUtils.split(qstr, " ");
    for (int i = 0; i < nvps.length; i++) {
      String[] nv = StringUtils.split(nvps[i], ":");
      if (nv[0].startsWith("+")) {
        q.add(new PayloadTermQuery(new Term(nv[0].substring(1), nv[1]), 
          new AveragePayloadFunction(), false), Occur.MUST);
      } else {
        q.add(new PayloadTermQuery(new Term(nv[0], nv[1]), 
          new AveragePayloadFunction(), false), Occur.SHOULD);
      }
    }
    return q;
  }
}

it work for solr6.3 ?