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Deduplicate post search results

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This commit is contained in:
Tim
2025-07-01 23:14:03 +08:00
parent 26e624c43b
commit 0b424805e5
2 changed files with 70 additions and 5 deletions
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28
src/main/java/com/openisle/service/SearchService.java
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@@ -11,7 +11,9 @@ import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import java.util.List;
import java.util.LinkedHashMap;
import java.util.stream.Stream;
import java.util.stream.Collectors;
@Service
@RequiredArgsConstructor
@@ -46,13 +48,29 @@ public class SearchService {
public List<SearchResult> globalSearch(String keyword) {
Stream<SearchResult> users = searchUsers(keyword).stream()
.map(u -> new SearchResult("user", u.getId(), u.getUsername()));
Stream<SearchResult> posts = searchPosts(keyword).stream()
.map(p -> new SearchResult("post", p.getId(), p.getTitle()));
Stream<SearchResult> titles = searchPostsByTitle(keyword).stream()
.map(p -> new SearchResult("post_title", p.getId(), p.getTitle()));
// Merge post results while removing duplicates between search by content
// and search by title
List<SearchResult> mergedPosts = Stream.concat(
searchPosts(keyword).stream()
.map(p -> new SearchResult("post", p.getId(), p.getTitle())),
searchPostsByTitle(keyword).stream()
.map(p -> new SearchResult("post_title", p.getId(), p.getTitle()))
)
.collect(java.util.stream.Collectors.toMap(
SearchResult::id,
sr -> sr,
(a, b) -> a,
java.util.LinkedHashMap::new
))
.values()
.stream()
.toList();
Stream<SearchResult> comments = searchComments(keyword).stream()
.map(c -> new SearchResult("comment", c.getId(), c.getContent()));
return Stream.concat(Stream.concat(Stream.concat(users, posts), titles), comments)
return Stream.concat(Stream.concat(users, mergedPosts.stream()), comments)
.toList();
}