How to use
addSearchField
method
in
org.dspace.discovery.DiscoverQuery

Best Java code snippets using org.dspace.discovery.DiscoverQuery.addSearchField (Showing top 3 results out of 315)

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private void calculateNewRangeBasedOnSearchIndex(Context context, List<String> filterQueries, DSpaceObject scope,
                         SearchService searchService) throws SearchServiceException {
  DiscoverQuery yearRangeQuery = new DiscoverQuery();
  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.toArray(new String[filterQueries.size()]));
  yearRangeQuery.addSearchField(dateFacet);
  DiscoverResult lastYearResult = searchService.search(context, scope, yearRangeQuery);
  if (0 < lastYearResult.getDspaceObjects().size()) {
    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 = searchService.search(context, scope, yearRangeQuery);
  if (0 < firstYearResult.getDspaceObjects().size()) {
    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));
    }
  }
}

  @Override
  public String calculateExtremeValue(Context context, String valueField,
                    String sortField,
                    DiscoverQuery.SORT_ORDER sortOrder)
    throws SearchServiceException {

    DiscoverQuery maxQuery = new DiscoverQuery();
    maxQuery.setMaxResults(1);
    //Set our query to anything that has this value
    maxQuery.addFieldPresentQueries(valueField);
    //Set sorting so our last value will appear on top
    maxQuery.setSortField(sortField, sortOrder);
    maxQuery.addSearchField(valueField);
    DiscoverResult maxResult = this.search(context,maxQuery);
    if (0 < maxResult.getDspaceObjects().size()) {
      List<DiscoverResult.SearchDocument> searchDocuments = maxResult
        .getSearchDocument(maxResult.getDspaceObjects().get(0));
      if (0 < searchDocuments.size() && 0 < searchDocuments.get(0).getSearchFieldValues
        (valueField).size()) {
        return searchDocuments.get(0).getSearchFieldValues(valueField).get(0);
      }
    }
    return null;
  }
}

yearRangeQuery.addSearchField(dateFacet);
DiscoverResult lastYearResult = getSearchService().search(context, scope, yearRangeQuery);

Javadoc

Sets the fields which you want Discovery to return in the search results. It is HIGHLY recommended to limit the fields returned, as by default some backends (like Solr) will return everything.

Popular methods of DiscoverQuery

addFilterQueries
Adds new filter queries
getFacetOffset
Gets the facet field offset
getMaxResults
The maximum number of results returned by this query
getQuery
<init>
addFacetField
Adds a new facet field
addFacetQuery
Adds a new facet query
addFieldPresentQueries
Adds a query that will ensure that a certain field is present in the index
getDSpaceObjectFilter
Gets the DSpace object filter can be used to only return objects from a certain DSpace Object type
getFacetFields
Gets the facets fields configured
getFacetMinCount
Gets the minimum number of values that need to be present before a valid facet value has been found
getFacetQueries
Returns the facet queries

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How to use addSearchFieldmethodin org.dspace.discovery.DiscoverQuery

Best Java code snippets using org.dspace.discovery.DiscoverQuery.addSearchField (Showing top 3 results out of 315)

How to use
addSearchField
method
in
org.dspace.discovery.DiscoverQuery