コード例 #1
0
ファイル: FacetRequest.java プロジェクト: Gukie/lucene-solr
  @Override
  public FacetQuery parse(Object arg) throws SyntaxError {
    parseCommonParams(arg);

    String qstring = null;
    if (arg instanceof String) {
      // just the field name...
      qstring = (String) arg;

    } else if (arg instanceof Map) {
      Map<String, Object> m = (Map<String, Object>) arg;
      qstring = getString(m, "q", null);
      if (qstring == null) {
        qstring = getString(m, "query", null);
      }

      // OK to parse subs before we have parsed our own query?
      // as long as subs don't need to know about it.
      parseSubs(m.get("facet"));
    }

    // TODO: substats that are from defaults!!!

    if (qstring != null) {
      QParser parser = QParser.getParser(qstring, null, getSolrRequest());
      facet.q = parser.getQuery();
    }

    return facet;
  }
コード例 #2
0
  private void evalFilters() throws IOException {
    if (freq.domain.filters == null || freq.domain.filters.isEmpty()) return;

    List<Query> qlist = new ArrayList<>(freq.domain.filters.size());
    // TODO: prevent parsing filters each time!
    for (Object rawFilter : freq.domain.filters) {
      Query symbolicFilter;
      if (rawFilter instanceof String) {
        QParser parser = null;
        try {
          parser = QParser.getParser((String) rawFilter, fcontext.req);
          symbolicFilter = parser.getQuery();
        } catch (SyntaxError syntaxError) {
          throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, syntaxError);
        }
      } else {
        throw new SolrException(
            SolrException.ErrorCode.BAD_REQUEST, "Bad query (expected a string):" + rawFilter);
      }

      qlist.add(symbolicFilter);
    }

    this.filter = fcontext.searcher.getDocSet(qlist);
  }
コード例 #3
0
  public void getFacetQueryCount(ParsedParams parsed, NamedList<Integer> res)
      throws SyntaxError, IOException {
    // TODO: slight optimization would prevent double-parsing of any localParams
    // TODO: SOLR-7753
    Query qobj = QParser.getParser(parsed.facetValue, null, req).getQuery();

    if (qobj == null) {
      res.add(parsed.key, 0);
    } else if (parsed.params.getBool(GroupParams.GROUP_FACET, false)) {
      res.add(parsed.key, getGroupedFacetQueryCount(qobj, parsed.docs));
    } else {
      res.add(parsed.key, searcher.numDocs(qobj, parsed.docs));
    }
  }
コード例 #4
0
    public Query parse() throws SyntaxError {
      String reRankQueryString = localParams.get("reRankQuery");
      boolean scale = localParams.getBool("scale", false);
      QParser reRankParser = QParser.getParser(reRankQueryString, null, req);
      Query reRankQuery = reRankParser.parse();

      int reRankDocs = localParams.getInt("reRankDocs", 200);
      reRankDocs = Math.max(1, reRankDocs); //

      double reRankWeight = localParams.getDouble("reRankWeight", 2.0d);

      int start = params.getInt(CommonParams.START, 0);
      int rows = params.getInt(CommonParams.ROWS, 10);
      int length = start + rows;
      return new ReRankQuery(reRankQuery, reRankDocs, reRankWeight, length, scale);
    }
コード例 #5
0
  // returns "true" if filters were applied to fcontext.base already
  private boolean handleBlockJoin() throws IOException {
    boolean appliedFilters = false;
    if (!(freq.domain.toChildren || freq.domain.toParent)) return appliedFilters;

    // TODO: avoid query parsing per-bucket somehow...
    String parentStr = freq.domain.parents;
    Query parentQuery;
    try {
      QParser parser = QParser.getParser(parentStr, fcontext.req);
      parentQuery = parser.getQuery();
    } catch (SyntaxError err) {
      throw new SolrException(
          SolrException.ErrorCode.BAD_REQUEST,
          "Error parsing block join parent specification: " + parentStr);
    }

    BitDocSet parents = fcontext.searcher.getDocSetBits(parentQuery);
    DocSet input = fcontext.base;
    DocSet result;

    if (freq.domain.toChildren) {
      // If there are filters on this facet, then use them as acceptDocs when executing toChildren.
      // We need to remember to not redundantly re-apply these filters after.
      DocSet acceptDocs = this.filter;
      if (acceptDocs == null) {
        acceptDocs = fcontext.searcher.getLiveDocs();
      } else {
        appliedFilters = true;
      }
      result = BlockJoin.toChildren(input, parents, acceptDocs, fcontext.qcontext);
    } else {
      result = BlockJoin.toParents(input, parents, fcontext.qcontext);
    }

    fcontext.base = result;
    return appliedFilters;
  }
コード例 #6
0
ファイル: FacetRequest.java プロジェクト: Gukie/lucene-solr
 // parses avg(x)
 private AggValueSource parseStringStat(String key, String stat) throws SyntaxError {
   FunctionQParser parser =
       (FunctionQParser) QParser.getParser(stat, FunctionQParserPlugin.NAME, getSolrRequest());
   AggValueSource agg = parser.parseAgg(FunctionQParser.FLAG_DEFAULT);
   return agg;
 }
コード例 #7
0
 /**
  * @param query the query
  * @return a lucene qparser
  * @throws SyntaxError iff something goes wrong
  */
 public QParser parser(String query) throws SyntaxError {
   return QParser.getParser(query, req);
 }
コード例 #8
0
  @Override
  public void prepare(ResponseBuilder rb) throws IOException {

    SolrQueryRequest req = rb.req;
    SolrParams params = req.getParams();
    if (!params.getBool(COMPONENT_NAME, true)) {
      return;
    }
    SolrQueryResponse rsp = rb.rsp;

    // Set field flags
    String fl = params.get(CommonParams.FL);
    int fieldFlags = 0;
    if (fl != null) {
      fieldFlags |= SolrPluginUtils.setReturnFields(fl, rsp);
    }
    rb.setFieldFlags(fieldFlags);

    String defType = params.get(QueryParsing.DEFTYPE, QParserPlugin.DEFAULT_QTYPE);

    // get it from the response builder to give a different component a chance
    // to set it.
    String queryString = rb.getQueryString();
    if (queryString == null) {
      // this is the normal way it's set.
      queryString = params.get(CommonParams.Q);
      rb.setQueryString(queryString);
    }

    try {
      QParser parser = QParser.getParser(rb.getQueryString(), defType, req);
      Query q = parser.getQuery();
      if (q == null) {
        // normalize a null query to a query that matches nothing
        q = new BooleanQuery();
      }
      rb.setQuery(q);
      rb.setSortSpec(parser.getSort(true));
      rb.setQparser(parser);

      String[] fqs = req.getParams().getParams(CommonParams.FQ);
      if (fqs != null && fqs.length != 0) {
        List<Query> filters = rb.getFilters();
        if (filters == null) {
          filters = new ArrayList<Query>();
          rb.setFilters(filters);
        }
        for (String fq : fqs) {
          if (fq != null && fq.trim().length() != 0) {
            QParser fqp = QParser.getParser(fq, null, req);
            filters.add(fqp.getQuery());
          }
        }
      }
    } catch (ParseException e) {
      throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, e);
    }

    // TODO: temporary... this should go in a different component.
    String shards = params.get(ShardParams.SHARDS);
    if (shards != null) {
      List<String> lst = StrUtils.splitSmart(shards, ",", true);
      rb.shards = lst.toArray(new String[lst.size()]);
    }
    String shards_rows = params.get(ShardParams.SHARDS_ROWS);
    if (shards_rows != null) {
      rb.shards_rows = Integer.parseInt(shards_rows);
    }
    String shards_start = params.get(ShardParams.SHARDS_START);
    if (shards_start != null) {
      rb.shards_start = Integer.parseInt(shards_start);
    }
  }
コード例 #9
0
  /** Actually run the query */
  @Override
  public void process(ResponseBuilder rb) throws IOException {
    SolrQueryRequest req = rb.req;
    SolrQueryResponse rsp = rb.rsp;
    SolrParams params = req.getParams();
    if (!params.getBool(COMPONENT_NAME, true)) {
      return;
    }
    SolrIndexSearcher searcher = req.getSearcher();

    if (rb.getQueryCommand().getOffset() < 0) {
      throw new SolrException(
          SolrException.ErrorCode.BAD_REQUEST, "'start' parameter cannot be negative");
    }

    // -1 as flag if not set.
    long timeAllowed = (long) params.getInt(CommonParams.TIME_ALLOWED, -1);

    // Optional: This could also be implemented by the top-level searcher sending
    // a filter that lists the ids... that would be transparent to
    // the request handler, but would be more expensive (and would preserve score
    // too if desired).
    String ids = params.get(ShardParams.IDS);
    if (ids != null) {
      SchemaField idField = req.getSchema().getUniqueKeyField();
      List<String> idArr = StrUtils.splitSmart(ids, ",", true);
      int[] luceneIds = new int[idArr.size()];
      int docs = 0;
      for (int i = 0; i < idArr.size(); i++) {
        int id =
            req.getSearcher()
                .getFirstMatch(
                    new Term(idField.getName(), idField.getType().toInternal(idArr.get(i))));
        if (id >= 0) luceneIds[docs++] = id;
      }

      DocListAndSet res = new DocListAndSet();
      res.docList = new DocSlice(0, docs, luceneIds, null, docs, 0);
      if (rb.isNeedDocSet()) {
        List<Query> queries = new ArrayList<Query>();
        queries.add(rb.getQuery());
        List<Query> filters = rb.getFilters();
        if (filters != null) queries.addAll(filters);
        res.docSet = searcher.getDocSet(queries);
      }
      rb.setResults(res);
      rsp.add("response", rb.getResults().docList);
      return;
    }

    SolrIndexSearcher.QueryCommand cmd = rb.getQueryCommand();
    cmd.setTimeAllowed(timeAllowed);
    SolrIndexSearcher.QueryResult result = new SolrIndexSearcher.QueryResult();

    //
    // grouping / field collapsing
    //
    boolean doGroup = params.getBool(GroupParams.GROUP, false);
    if (doGroup) {
      try {
        cmd.groupCommands = new ArrayList<Grouping.Command>();

        String[] fields = params.getParams(GroupParams.GROUP_FIELD);
        String[] funcs = params.getParams(GroupParams.GROUP_FUNC);
        String[] queries = params.getParams(GroupParams.GROUP_QUERY);
        String groupSortStr = params.get(GroupParams.GROUP_SORT);
        Sort groupSort =
            groupSortStr != null ? QueryParsing.parseSort(groupSortStr, req.getSchema()) : null;

        int limitDefault = cmd.getLen(); // this is normally from "rows"
        int docsPerGroupDefault = params.getInt(GroupParams.GROUP_LIMIT, 1);

        // temporary: implement all group-by-field as group-by-func
        if (funcs == null) {
          funcs = fields;
        } else if (fields != null) {
          // catenate functions and fields
          String[] both = new String[fields.length + funcs.length];
          System.arraycopy(fields, 0, both, 0, fields.length);
          System.arraycopy(funcs, 0, both, fields.length, funcs.length);
          funcs = both;
        }

        if (funcs != null) {
          for (String groupByStr : funcs) {
            QParser parser = QParser.getParser(groupByStr, "func", rb.req);
            Query q = parser.getQuery();
            Grouping.CommandFunc gc = new Grouping.CommandFunc();
            gc.groupSort = groupSort;

            if (q instanceof FunctionQuery) {
              gc.groupBy = ((FunctionQuery) q).getValueSource();
            } else {
              gc.groupBy = new QueryValueSource(q, 0.0f);
            }
            gc.key = groupByStr;
            gc.groupLimit = limitDefault;
            gc.docsPerGroup = docsPerGroupDefault;

            cmd.groupCommands.add(gc);
          }
        }

        if (cmd.groupCommands.size() == 0) cmd.groupCommands = null;

        if (cmd.groupCommands != null) {
          if (rb.doHighlights || rb.isDebug()) {
            // we need a single list of the returned docs
            cmd.setFlags(SolrIndexSearcher.GET_DOCLIST);
          }

          searcher.search(result, cmd);
          rb.setResult(result);
          rsp.add("grouped", result.groupedResults);
          // TODO: get "hits" a different way to log
          return;
        }
      } catch (ParseException e) {
        throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, e);
      }
    }

    // normal search result
    searcher.search(result, cmd);
    rb.setResult(result);

    rsp.add("response", rb.getResults().docList);
    rsp.getToLog().add("hits", rb.getResults().docList.matches());

    doFieldSortValues(rb, searcher);
    doPrefetch(rb);
  }