Exemple #1
0
  /**
   * Generate the cache validity object.
   *
   * <p>The validity object will include the collection being viewed and all recently submitted
   * items. This does not include the community / collection hierarch, when this changes they will
   * not be reflected in the cache.
   */
  public SourceValidity getValidity() {
    if (this.validity == null) {

      try {
        DSpaceValidity validity = new DSpaceValidity();

        DSpaceObject dso = HandleUtil.obtainHandle(objectModel);

        if (dso != null) {
          // Add the actual collection;
          validity.add(dso);
        }

        // add recently submitted items, serialize solr query contents.
        DiscoverResult response = getQueryResponse(dso);

        validity.add("numFound:" + response.getDspaceObjects().size());

        for (DSpaceObject resultDso : response.getDspaceObjects()) {
          validity.add(resultDso);
        }

        for (String facetField : response.getFacetResults().keySet()) {
          validity.add(facetField);

          List<DiscoverResult.FacetResult> facetValues = response.getFacetResults().get(facetField);
          for (DiscoverResult.FacetResult facetValue : facetValues) {
            validity.add(facetValue.getAsFilterQuery() + facetValue.getCount());
          }
        }

        this.validity = validity.complete();
      } catch (Exception e) {
        // Just ignore all errors and return an invalid cache.
      }

      // TODO: dependent on tags as well :)
    }
    return this.validity;
  }
Exemple #2
0
  private static void setFacet(
      Context context,
      HttpServletRequest request,
      DSpaceObject scope,
      DiscoverQuery queryArgs,
      DiscoveryConfiguration discoveryConfiguration,
      List<String> userFilters) {
    List<DiscoverySearchFilterFacet> facets = discoveryConfiguration.getSidebarFacets();

    log.info("facets for scope, " + scope + ": " + (facets != null ? facets.size() : null));
    if (facets != null) {
      queryArgs.setFacetMinCount(1);
    }

    /** enable faceting of search results */
    if (facets != null) {
      queryArgs.setFacetMinCount(1);
      for (DiscoverySearchFilterFacet facet : facets) {
        if (facet.getType().equals(DiscoveryConfigurationParameters.TYPE_DATE)) {
          String dateFacet = facet.getIndexFieldName() + ".year";
          List<String> filterQueriesList = queryArgs.getFilterQueries();
          String[] filterQueries = new String[0];
          if (filterQueriesList != null) {
            filterQueries = new String[filterQueries.length];
            filterQueries = filterQueriesList.toArray(filterQueries);
          }
          try {
            // Get a range query so we can create facet
            // queries
            // ranging from out first to our last date
            // Attempt to determine our oldest & newest year
            // by
            // checking for previously selected filters
            int oldestYear = -1;
            int newestYear = -1;

            for (String filterQuery : filterQueries) {
              if (filterQuery.startsWith(dateFacet + ":")) {
                // Check for a range
                Pattern pattern = Pattern.compile("\\[(.*? TO .*?)\\]");
                Matcher matcher = pattern.matcher(filterQuery);
                boolean hasPattern = matcher.find();
                if (hasPattern) {
                  filterQuery = matcher.group(0);
                  // We have a range
                  // Resolve our range to a first &
                  // endyear
                  int tempOldYear =
                      Integer.parseInt(filterQuery.split(" TO ")[0].replace("[", "").trim());
                  int tempNewYear =
                      Integer.parseInt(filterQuery.split(" TO ")[1].replace("]", "").trim());

                  // Check if we have a further filter
                  // (or
                  // a first one found)
                  if (tempNewYear < newestYear || oldestYear < tempOldYear || newestYear == -1) {
                    oldestYear = tempOldYear;
                    newestYear = tempNewYear;
                  }

                } else {
                  if (filterQuery.indexOf(" OR ") != -1) {
                    // Should always be the case
                    filterQuery = filterQuery.split(" OR ")[0];
                  }
                  // We should have a single date
                  oldestYear = Integer.parseInt(filterQuery.split(":")[1].trim());
                  newestYear = oldestYear;
                  // No need to look further
                  break;
                }
              }
            }
            // Check if we have found a range, if not then
            // retrieve our first & last year by using solr
            if (oldestYear == -1 && newestYear == -1) {

              DiscoverQuery yearRangeQuery = new DiscoverQuery();
              yearRangeQuery.setFacetMinCount(1);
              yearRangeQuery.setMaxResults(1);
              // Set our query to anything that has this
              // value
              yearRangeQuery.addFieldPresentQueries(dateFacet);
              // Set sorting so our last value will appear
              // on
              // top
              yearRangeQuery.setSortField(dateFacet + "_sort", DiscoverQuery.SORT_ORDER.asc);
              yearRangeQuery.addFilterQueries(filterQueries);
              yearRangeQuery.addSearchField(dateFacet);
              DiscoverResult lastYearResult =
                  SearchUtils.getSearchService().search(context, scope, yearRangeQuery);

              if (0 < lastYearResult.getDspaceObjects().size()) {
                java.util.List<DiscoverResult.SearchDocument> searchDocuments =
                    lastYearResult.getSearchDocument(lastYearResult.getDspaceObjects().get(0));
                if (0 < searchDocuments.size()
                    && 0 < searchDocuments.get(0).getSearchFieldValues(dateFacet).size()) {
                  oldestYear =
                      Integer.parseInt(
                          searchDocuments.get(0).getSearchFieldValues(dateFacet).get(0));
                }
              }
              // Now get the first year
              yearRangeQuery.setSortField(dateFacet + "_sort", DiscoverQuery.SORT_ORDER.desc);
              DiscoverResult firstYearResult =
                  SearchUtils.getSearchService().search(context, scope, yearRangeQuery);
              if (0 < firstYearResult.getDspaceObjects().size()) {
                java.util.List<DiscoverResult.SearchDocument> searchDocuments =
                    firstYearResult.getSearchDocument(firstYearResult.getDspaceObjects().get(0));
                if (0 < searchDocuments.size()
                    && 0 < searchDocuments.get(0).getSearchFieldValues(dateFacet).size()) {
                  newestYear =
                      Integer.parseInt(
                          searchDocuments.get(0).getSearchFieldValues(dateFacet).get(0));
                }
              }
              // No values found!
              if (newestYear == -1 || oldestYear == -1) {
                continue;
              }
            }

            int gap = 1;
            // Attempt to retrieve our gap by the algorithm
            // below
            int yearDifference = newestYear - oldestYear;
            if (yearDifference != 0) {
              while (10 < ((double) yearDifference / gap)) {
                gap *= 10;
              }
            }
            // We need to determine our top year so we can
            // start
            // our count from a clean year
            // Example: 2001 and a gap from 10 we need the
            // following result: 2010 - 2000 ; 2000 - 1990
            // hence
            // the top year
            int topYear = (int) (Math.ceil((float) (newestYear) / gap) * gap);

            if (gap == 1) {
              // We need a list of our years
              // We have a date range add faceting for our
              // field
              // The faceting will automatically be
              // limited to
              // the 10 years in our span due to our
              // filterquery
              queryArgs.addFacetField(
                  new DiscoverFacetField(
                      facet.getIndexFieldName(), facet.getType(), 10, facet.getSortOrder()));
            } else {
              java.util.List<String> facetQueries = new ArrayList<String>();
              // Create facet queries but limit then to 11
              // (11
              // == when we need to show a show more url)
              for (int year = topYear - gap;
                  year > oldestYear && (facetQueries.size() < 11);
                  year -= gap) {
                // Add a filter to remove the last year
                // only
                // if we aren't the last year
                int bottomYear = year - gap;
                // Make sure we don't go below our last
                // year
                // found
                if (bottomYear < oldestYear) {
                  bottomYear = oldestYear;
                }

                // Also make sure we don't go above our
                // newest year
                int currentTop = year;
                if ((year == topYear)) {
                  currentTop = newestYear;
                } else {
                  // We need to do -1 on this one to
                  // get a
                  // better result
                  currentTop--;
                }
                facetQueries.add(dateFacet + ":[" + bottomYear + " TO " + currentTop + "]");
              }
              for (String facetQuery : facetQueries) {
                queryArgs.addFacetQuery(facetQuery);
              }
            }
          } catch (Exception e) {
            log.error(
                LogManager.getHeader(
                    context,
                    "Error in discovery while setting up date facet range",
                    "date facet: " + dateFacet),
                e);
          }
        } else {
          int facetLimit = facet.getFacetLimit();

          int facetPage = UIUtil.getIntParameter(request, facet.getIndexFieldName() + "_page");
          if (facetPage < 0) {
            facetPage = 0;
          }
          // at most all the user filters belong to this facet
          int alreadySelected = userFilters.size();

          // Add one to our facet limit to make sure that if
          // we
          // have more then the shown facets that we show our
          // show
          // more url
          // add the already selected facet so to have a full
          // top list
          // if possible
          queryArgs.addFacetField(
              new DiscoverFacetField(
                  facet.getIndexFieldName(),
                  DiscoveryConfigurationParameters.TYPE_TEXT,
                  facetLimit + 1 + alreadySelected,
                  facet.getSortOrder(),
                  facetPage * facetLimit));
        }
      }
    }
  }
Exemple #3
0
  @Override
  public void addBody(Body body)
      throws SAXException, WingException, UIException, SQLException, IOException,
          AuthorizeException {

    Request request = ObjectModelHelper.getRequest(objectModel);

    DSpaceObject dso = HandleUtil.obtainHandle(objectModel);

    // Set up the major variables
    // Collection collection = (Collection) dso;

    // Build the collection viewer division.

    // Make sure we get our results
    queryResults = getQueryResponse(dso);
    if (this.queryResults != null) {

      Map<String, List<DiscoverResult.FacetResult>> facetFields =
          this.queryResults.getFacetResults();
      if (facetFields == null) {
        facetFields = new LinkedHashMap<String, List<DiscoverResult.FacetResult>>();
      }

      //            facetFields.addAll(this.queryResults.getFacetDates());

      if (facetFields.size() > 0) {
        String facetField =
            String.valueOf(facetFields.keySet().toArray(new String[facetFields.size()])[0]);
        java.util.List<DiscoverResult.FacetResult> values = facetFields.get(facetField);

        if (values != null && 0 < values.size()) {

          Division results = body.addDivision("browse-by-" + facetField + "-results", "primary");

          results.setHead(
              message(
                  "xmlui.ArtifactBrowser.AbstractSearch.type_"
                      + request.getParameter(FACET_FIELD)
                      + "_browse"));

          // Find our faceting offset
          int offSet = queryArgs.getFacetOffset();
          if (offSet == -1) {
            offSet = 0;
          }

          // Only show the nextpageurl if we have at least one result following our current results
          String nextPageUrl = null;
          if (values.size() == (DEFAULT_PAGE_SIZE + 1)) {
            nextPageUrl = getNextPageURL(request);
          }

          results.setSimplePagination(
              (int) queryResults.getDspaceObjects().size(),
              offSet + 1,
              (offSet + (values.size() - 1)),
              getPreviousPageURL(request),
              nextPageUrl);

          Table singleTable =
              results.addTable(
                  "browse-by-" + facetField + "-results",
                  (int) (queryResults.getDspaceObjects().size() + 1),
                  1);

          List<String> filterQueries = new ArrayList<String>();
          if (request.getParameterValues("fq") != null) {
            filterQueries = Arrays.asList(request.getParameterValues("fq"));
          }
          for (int i = 0; i < values.size(); i++) {
            DiscoverResult.FacetResult value = values.get(i);

            String displayedValue = value.getDisplayedValue();
            String filterQuery = value.getAsFilterQuery();

            //                        if(field.getGap() != null){
            //                            //We have a date get the year so we can display it
            //                            DateFormat simpleDateformat = new
            // SimpleDateFormat("yyyy");
            //                            displayedValue =
            // simpleDateformat.format(SolrServiceImpl.toDate(displayedValue));
            //                            filterQuery =
            // ClientUtils.escapeQueryChars(value.getFacetField().getName()) + ":" + displayedValue
            // + "*";
            //                        }

            Cell cell = singleTable.addRow().addCell();

            // No use in selecting the same filter twice
            if (filterQueries.contains(filterQuery)) {
              cell.addContent(displayedValue + " (" + value.getCount() + ")");
            } else {
              cell.addXref(
                  contextPath
                      + (dso == null ? "" : "/handle/" + dso.getHandle())
                      + "/discover?"
                      + "&fq="
                      + URLEncoder.encode(filterQuery, "UTF-8")
                      + (request.getQueryString() != null ? "&" + request.getQueryString() : ""),
                  displayedValue + " (" + value.getCount() + ")");
            }
          }
        }
      }
    }

    // DSpaceObject dso = HandleUtil.obtainHandle(objectModel);

    /*
    if (dso != null)
    {
        if (dso instanceof Collection)
        {
            browseContext.addItem().addXref(contextPath + "/discovery/?q=search.resourcetype%3A2+AND+location%3Al" + dso.getID(), T_head_this_collection );
        }
        if (dso instanceof Community)
        {
            browseContext.addItem().addXref(contextPath + "/discovery/?q=search.resourcetype%3A2+AND+location%3Am" + dso.getID(), T_head_this_community );
        }
    }

    browseGlobal.addItem().addXref(contextPath + "/discovery/?q=search.resourcetype%3A2", T_head_all_of_dspace );
    */
  }