Examples with SearchResultItemImpl org.opencastproject.search.api.SearchResultItemImpl used on opensource projects

Example 1 with SearchResultItemImpl

use of org.opencastproject.search.api.SearchResultItemImpl in project opencast by opencast.

the class SolrRequester method createSearchResult.

/**
 * Creates a search result from a given solr response.
 *
 * @param query
 *          The solr query.
 * @return The search result.
 * @throws SolrServerException
 *           if the solr server is not working as expected
 */
private SearchResult createSearchResult(final SolrQuery query) throws SolrServerException {
    // Execute the query and try to get hold of a query response
    QueryResponse solrResponse = null;
    try {
        solrResponse = solrServer.query(query);
    } catch (Exception e) {
        throw new SolrServerException(e);
    }
    // Create and configure the query result
    final SearchResultImpl result = new SearchResultImpl(query.getQuery());
    result.setSearchTime(solrResponse.getQTime());
    result.setOffset(solrResponse.getResults().getStart());
    result.setLimit(solrResponse.getResults().size());
    result.setTotal(solrResponse.getResults().getNumFound());
    // Walk through response and create new items with title, creator, etc:
    for (final SolrDocument doc : solrResponse.getResults()) {
        final SearchResultItemImpl item = SearchResultItemImpl.fill(new SearchResultItem() {

            private final String dfltString = null;

            @Override
            public String getId() {
                return Schema.getId(doc);
            }

            /**
             * {@inheritDoc}
             *
             * @see org.opencastproject.search.api.SearchResultItem#getOrganization()
             */
            @Override
            public String getOrganization() {
                return Schema.getOrganization(doc);
            }

            @Override
            public MediaPackage getMediaPackage() {
                MediaPackageBuilder builder = MediaPackageBuilderFactory.newInstance().newMediaPackageBuilder();
                if (serializer != null)
                    builder.setSerializer(serializer);
                String mediaPackageFieldValue = Schema.getOcMediapackage(doc);
                if (mediaPackageFieldValue != null) {
                    try {
                        return builder.loadFromXml(mediaPackageFieldValue);
                    } catch (Exception e) {
                        logger.warn("Unable to read media package from search result", e);
                    }
                }
                return null;
            }

            @Override
            public long getDcExtent() {
                if (getType().equals(SearchResultItemType.AudioVisual)) {
                    Long extent = Schema.getDcExtent(doc);
                    if (extent != null)
                        return extent;
                }
                return -1;
            }

            @Override
            public String getDcTitle() {
                final List<DField<String>> titles = Schema.getDcTitle(doc);
                // try to return the first title without any language information first...
                return head(filter(titles, new Predicate<DField<String>>() {

                    @Override
                    public Boolean apply(DField<String> f) {
                        return f.getSuffix().equals(Schema.LANGUAGE_UNDEFINED);
                    }
                })).map(new Function<DField<String>, String>() {

                    @Override
                    public String apply(DField<String> f) {
                        return f.getValue();
                    }
                }).getOrElse(new Function0<String>() {

                    @Override
                    public String apply() {
                        // ... since none is present return the first arbitrary title
                        return Schema.getFirst(titles, dfltString);
                    }
                });
            }

            @Override
            public String getDcSubject() {
                return Schema.getFirst(Schema.getDcSubject(doc), dfltString);
            }

            @Override
            public String getDcDescription() {
                return Schema.getFirst(Schema.getDcDescription(doc), dfltString);
            }

            @Override
            public String getDcCreator() {
                return Schema.getFirst(Schema.getDcCreator(doc), dfltString);
            }

            @Override
            public String getDcPublisher() {
                return Schema.getFirst(Schema.getDcPublisher(doc), dfltString);
            }

            @Override
            public String getDcContributor() {
                return Schema.getFirst(Schema.getDcContributor(doc), dfltString);
            }

            @Override
            public String getDcAbstract() {
                return null;
            }

            @Override
            public Date getDcCreated() {
                return Schema.getDcCreated(doc);
            }

            @Override
            public Date getDcAvailableFrom() {
                return Schema.getDcAvailableFrom(doc);
            }

            @Override
            public Date getDcAvailableTo() {
                return Schema.getDcAvailableTo(doc);
            }

            @Override
            public String getDcLanguage() {
                return Schema.getDcLanguage(doc);
            }

            @Override
            public String getDcRightsHolder() {
                return Schema.getFirst(Schema.getDcRightsHolder(doc), dfltString);
            }

            @Override
            public String getDcSpatial() {
                return Schema.getFirst(Schema.getDcSpatial(doc), dfltString);
            }

            @Override
            public String getDcTemporal() {
                return null;
            }

            @Override
            public String getDcIsPartOf() {
                return Schema.getDcIsPartOf(doc);
            }

            @Override
            public String getDcReplaces() {
                return Schema.getDcReplaces(doc);
            }

            @Override
            public String getDcType() {
                return Schema.getDcType(doc);
            }

            @Override
            public String getDcAccessRights() {
                return Schema.getFirst(Schema.getDcAccessRights(doc), dfltString);
            }

            @Override
            public String getDcLicense() {
                return Schema.getFirst(Schema.getDcLicense(doc), dfltString);
            }

            @Override
            public String getOcMediapackage() {
                return Schema.getOcMediapackage(doc);
            }

            @Override
            public SearchResultItemType getType() {
                String t = Schema.getOcMediatype(doc);
                return t != null ? SearchResultItemType.valueOf(t) : null;
            }

            @Override
            public String[] getKeywords() {
                if (getType().equals(SearchResultItemType.AudioVisual)) {
                    String k = Schema.getOcKeywords(doc);
                    return k != null ? k.split(" ") : new String[0];
                } else
                    return new String[0];
            }

            @Override
            public String getCover() {
                return Schema.getOcCover(doc);
            }

            @Override
            public Date getModified() {
                return Schema.getOcModified(doc);
            }

            @Override
            public double getScore() {
                return Schema.getScore(doc);
            }

            @Override
            public MediaSegment[] getSegments() {
                if (SearchResultItemType.AudioVisual.equals(getType()))
                    return createSearchResultSegments(doc, query).toArray(new MediaSegmentImpl[0]);
                else
                    return new MediaSegmentImpl[0];
            }
        });
        // Add the item to the result set
        result.addItem(item);
    }
    return result;
}