Examples with ChangeAction org.openstreetmap.osmosis.core.task.common.ChangeAction used on opensource projects

Example 1 with ChangeAction

use of org.openstreetmap.osmosis.core.task.common.ChangeAction in project GeoGig by boundlessgeo.

the class CreateOSMChangesetOp method _call.

/**
     * Executes the diff operation.
     * 
     * @return an iterator to a set of differences between the two trees
     * @see DiffEntry
     */
@Override
protected Iterator<ChangeContainer> _call() {
    Iterator<DiffEntry> nodeIterator = command(DiffOp.class).setFilter(OSMUtils.NODE_TYPE_NAME).setNewVersion(newRefSpec).setOldVersion(oldRefSpec).setReportTrees(false).call();
    Iterator<DiffEntry> wayIterator = command(DiffOp.class).setFilter(OSMUtils.WAY_TYPE_NAME).setNewVersion(newRefSpec).setOldVersion(oldRefSpec).setReportTrees(false).call();
    Iterator<DiffEntry> iterator = Iterators.concat(nodeIterator, wayIterator);
    final EntityConverter converter = new EntityConverter();
    Function<DiffEntry, ChangeContainer> function = new Function<DiffEntry, ChangeContainer>() {

        @Override
        @Nullable
        public ChangeContainer apply(@Nullable DiffEntry diff) {
            NodeRef ref = diff.changeType().equals(ChangeType.REMOVED) ? diff.getOldObject() : diff.getNewObject();
            RevFeature revFeature = command(RevObjectParse.class).setObjectId(ref.objectId()).call(RevFeature.class).get();
            RevFeatureType revFeatureType = command(RevObjectParse.class).setObjectId(ref.getMetadataId()).call(RevFeatureType.class).get();
            SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder((SimpleFeatureType) revFeatureType.type());
            ImmutableList<PropertyDescriptor> descriptors = revFeatureType.sortedDescriptors();
            ImmutableList<Optional<Object>> values = revFeature.getValues();
            for (int i = 0; i < descriptors.size(); i++) {
                PropertyDescriptor descriptor = descriptors.get(i);
                Optional<Object> value = values.get(i);
                featureBuilder.set(descriptor.getName(), value.orNull());
            }
            SimpleFeature feature = featureBuilder.buildFeature(ref.name());
            Entity entity = converter.toEntity(feature, id);
            EntityContainer container;
            if (entity instanceof Node) {
                container = new NodeContainer((Node) entity);
            } else {
                container = new WayContainer((Way) entity);
            }
            ChangeAction action = diff.changeType().equals(ChangeType.ADDED) ? ChangeAction.Create : diff.changeType().equals(ChangeType.MODIFIED) ? ChangeAction.Modify : ChangeAction.Delete;
            return new ChangeContainer(container, action);
        }
    };
    return Iterators.transform(iterator, function);
}