Database Reference
In-Depth Information
Figure 11-12.
Filtering the current user's content
Listing 11-40.
TagImpl
public GraphStory
tagsInMyNetwork
(GraphStory graphStory) {
try {
graphStory.setTagsInNetwork
(Lists.newLinkedList(
mappedContentTagRepository.tagsInNetwork
(graphStory.getUser().getNodeId())));
graphStory.setUserTags
(Lists.newLinkedList(
mappedContentTagRepository.userTags
(graphStory.getUser().getNodeId())));
}
catch (Exception e) {
log.error(e);
}
return graphStory;
}
The
tagsInMyNetwork
method uses two methods inside
MappedContentTagRepository
, which is shown in
Listing 11-41. The
tagsInNetwork
finds users being followed, accesses all of their content, finds connected tags
through the
HAS
relationship type. Finally, the method returns an
Iterable
of
MappedContentTag
.
The
userTags
method is similar but is concerned only with content and, subsequently, tags connected to the
current user. Both methods limit the results to 30 items.
Listing 11-41.
MappedContentTagRepository
public interface
MappedContentTagRepository
extends GraphRepository<MappedContentTag> {
@Query("START u=node({nodeId})" +
" MATCH u-[:FOLLOWS]->f " +
" WITH distinct f " +
" MATCH f-[:CURRENTPOST]-lp-[:NEXTPOST*0..]-c " +
