Examples with NonEmptyList org.opencastproject.util.data.NonEmptyList used on opensource projects

Example 1 with NonEmptyList

use of org.opencastproject.util.data.NonEmptyList in project opencast by opencast.

the class StaticMetadataServiceDublinCoreImpl method newStaticMetadataFromEpisode.

private static StaticMetadata newStaticMetadataFromEpisode(DublinCoreCatalog episode) {
    // Ensure that the mandatory properties are present
    final Option<String> id = option(episode.getFirst(PROPERTY_IDENTIFIER));
    final Option<Date> created = option(episode.getFirst(PROPERTY_CREATED)).map(new Function<String, Date>() {

        @Override
        public Date apply(String a) {
            final Date date = EncodingSchemeUtils.decodeDate(a);
            return date != null ? date : Misc.<Date>chuck(new RuntimeException(a + " does not conform to W3C-DTF encoding scheme."));
        }
    });
    final Option temporalOpt = option(episode.getFirstVal(PROPERTY_TEMPORAL)).map(dc2temporalValueOption());
    final Option<Date> start;
    if (episode.getFirst(PROPERTY_TEMPORAL) != null) {
        DCMIPeriod period = EncodingSchemeUtils.decodeMandatoryPeriod(episode.getFirst(PROPERTY_TEMPORAL));
        start = option(period.getStart());
    } else {
        start = created;
    }
    final Option<String> language = option(episode.getFirst(PROPERTY_LANGUAGE));
    final Option<Long> extent = head(episode.get(PROPERTY_EXTENT)).map(new Function<DublinCoreValue, Long>() {

        @Override
        public Long apply(DublinCoreValue a) {
            final Long extent = EncodingSchemeUtils.decodeDuration(a);
            return extent != null ? extent : Misc.<Long>chuck(new RuntimeException(a + " does not conform to ISO8601 encoding scheme for durations."));
        }
    });
    final Option<String> type = option(episode.getFirst(PROPERTY_TYPE));
    final Option<String> isPartOf = option(episode.getFirst(PROPERTY_IS_PART_OF));
    final Option<String> replaces = option(episode.getFirst(PROPERTY_REPLACES));
    final Option<Interval> available = head(episode.get(PROPERTY_AVAILABLE)).flatMap(new Function<DublinCoreValue, Option<Interval>>() {

        @Override
        public Option<Interval> apply(DublinCoreValue v) {
            final DCMIPeriod p = EncodingSchemeUtils.decodePeriod(v);
            return p != null ? some(Interval.fromValues(p.getStart(), p.getEnd())) : Misc.<Option<Interval>>chuck(new RuntimeException(v + " does not conform to W3C-DTF encoding scheme for periods"));
        }
    });
    final NonEmptyList<MetadataValue<String>> titles = new NonEmptyList<MetadataValue<String>>(mlist(episode.get(PROPERTY_TITLE)).map(dc2mvString(PROPERTY_TITLE.getLocalName())).value());
    final List<MetadataValue<String>> subjects = mlist(episode.get(PROPERTY_SUBJECT)).map(dc2mvString(PROPERTY_SUBJECT.getLocalName())).value();
    final List<MetadataValue<String>> creators = mlist(episode.get(PROPERTY_CREATOR)).map(dc2mvString(PROPERTY_CREATOR.getLocalName())).value();
    final List<MetadataValue<String>> publishers = mlist(episode.get(PROPERTY_PUBLISHER)).map(dc2mvString(PROPERTY_PUBLISHER.getLocalName())).value();
    final List<MetadataValue<String>> contributors = mlist(episode.get(PROPERTY_CONTRIBUTOR)).map(dc2mvString(PROPERTY_CONTRIBUTOR.getLocalName())).value();
    final List<MetadataValue<String>> description = mlist(episode.get(PROPERTY_DESCRIPTION)).map(dc2mvString(PROPERTY_DESCRIPTION.getLocalName())).value();
    final List<MetadataValue<String>> rightsHolders = mlist(episode.get(PROPERTY_RIGHTS_HOLDER)).map(dc2mvString(PROPERTY_RIGHTS_HOLDER.getLocalName())).value();
    final List<MetadataValue<String>> spatials = mlist(episode.get(PROPERTY_SPATIAL)).map(dc2mvString(PROPERTY_SPATIAL.getLocalName())).value();
    final List<MetadataValue<String>> accessRights = mlist(episode.get(PROPERTY_ACCESS_RIGHTS)).map(dc2mvString(PROPERTY_ACCESS_RIGHTS.getLocalName())).value();
    final List<MetadataValue<String>> licenses = mlist(episode.get(PROPERTY_LICENSE)).map(dc2mvString(PROPERTY_LICENSE.getLocalName())).value();
    return new StaticMetadata() {

        @Override
        public Option<String> getId() {
            return id;
        }

        @Override
        public Option<Date> getCreated() {
            // so data will be kept correctly there, and only be "exported" to DC_CREATED for compatibility reasons here.
            return start;
        }

        @Override
        public Option<Date[]> getTemporalPeriod() {
            if (temporalOpt.isSome()) {
                if (temporalOpt.get() instanceof DCMIPeriod) {
                    DCMIPeriod p = (DCMIPeriod) temporalOpt.get();
                    return option(new Date[] { p.getStart(), p.getEnd() });
                }
            }
            return Option.none();
        }

        @Override
        public Option<Date> getTemporalInstant() {
            if (temporalOpt.isSome()) {
                if (temporalOpt.get() instanceof Date) {
                    return temporalOpt;
                }
            }
            return Option.none();
        }

        @Override
        public Option<Long> getTemporalDuration() {
            if (temporalOpt.isSome()) {
                if (temporalOpt.get() instanceof Long) {
                    return temporalOpt;
                }
            }
            return Option.none();
        }

        @Override
        public Option<Long> getExtent() {
            return extent;
        }

        @Override
        public Option<String> getLanguage() {
            return language;
        }

        @Override
        public Option<String> getIsPartOf() {
            return isPartOf;
        }

        @Override
        public Option<String> getReplaces() {
            return replaces;
        }

        @Override
        public Option<String> getType() {
            return type;
        }

        @Override
        public Option<Interval> getAvailable() {
            return available;
        }

        @Override
        public NonEmptyList<MetadataValue<String>> getTitles() {
            return titles;
        }

        @Override
        public List<MetadataValue<String>> getSubjects() {
            return subjects;
        }

        @Override
        public List<MetadataValue<String>> getCreators() {
            return creators;
        }

        @Override
        public List<MetadataValue<String>> getPublishers() {
            return publishers;
        }

        @Override
        public List<MetadataValue<String>> getContributors() {
            return contributors;
        }

        @Override
        public List<MetadataValue<String>> getDescription() {
            return description;
        }

        @Override
        public List<MetadataValue<String>> getRightsHolders() {
            return rightsHolders;
        }

        @Override
        public List<MetadataValue<String>> getSpatials() {
            return spatials;
        }

        @Override
        public List<MetadataValue<String>> getAccessRights() {
            return accessRights;
        }

        @Override
        public List<MetadataValue<String>> getLicenses() {
            return licenses;
        }
    };
}