Add endpoint to search by title

Tested in postman.

Author: Ferenc Hammerl

src/main/java/com/fhammerl/polls/controllers/PollsController.java

@@ -7,6 +7,7 @@
 
 import com.fhammerl.polls.repositories.PollRepository;
 import com.fhammerl.polls.models.Poll;
+import com.fhammerl.polls.models.SearchQuery;
 
 @RestController
 @RequestMapping("api/v1/polls")
@@ -28,4 +29,12 @@ public List<Poll> list() {
     public List<Poll> createdBy(int userId) {
         return pollRepository.findByCreatorId(userId);
     }
+
+    // Test: http://localhost:8080/api/v1/polls/search
+    // TODO: review post vs get for search. Sticking to post for now because of url encoding
+    @PostMapping 
+    @RequestMapping("search") // TODO: review ambiguous naming
+    public List<Poll> search(@RequestBody SearchQuery query) {
+        return pollRepository.findByTitle(query.getTitle());
+    }
 }

src/main/java/com/fhammerl/polls/models/SearchQuery.java

@@ -0,0 +1,13 @@
+package com.fhammerl.polls.models;
+
+public class SearchQuery {
+    private String title;
+
+    public String getTitle() {
+        return this.title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+}

src/main/java/com/fhammerl/polls/repositories/PollRepository.java

@@ -11,4 +11,7 @@
 public interface PollRepository extends JpaRepository<Poll, Integer> {
     @Query("SELECT p FROM poll p where p.createdByUserId = :id") 
     List<Poll> findByCreatorId(@Param("id") Integer userId);
+
+    @Query("SELECT p FROM poll p where p.title = :title") 
+    List<Poll> findByTitle(@Param("title") String title);
 }

src/test/java/com/fhammerl/polls/PollsControllerTests.java

@@ -5,6 +5,7 @@
 import java.util.List;
 
 import com.fhammerl.polls.models.Poll;
+import com.fhammerl.polls.models.SearchQuery;
 
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -35,4 +36,12 @@ void listCreatedByUserWorks() throws Exception {
 		List<Poll> polls = pollsController.createdBy(4);
 		assertEquals(polls.toArray().length, 2, "Unexpected number of polls found for user 4!");
 	}
+
+	@Test
+	void getByTitle() throws Exception {
+		SearchQuery query = new SearchQuery();
+		query.setTitle("谁是最坏蛋奇迹超级英雄?");
+		List<Poll> polls = pollsController.search(query);
+		assertEquals(polls.toArray().length, 1, "Unexpected number of polls found for title '谁是最坏蛋奇迹超级英雄?'!");
+	}
 }