update existing code for FTS in PostgreSQL

Author: rieckpil

spring-data-postgres-fulltext-search/src/main/java/de/rieckpil/blog/CommentController.java

@@ -23,7 +23,7 @@ public class CommentController {
 	@GetMapping
 	public List<Comment> getCommentsContainingText(@RequestParam("q") String queryText) {
 
-		List<Comment> list = em.createQuery("SELECT c FROM Comment c where fts(c.commentText, :commentText) = true", Comment.class)
+		List<Comment> list = em.createQuery("SELECT c FROM Comment c where fts(english, c.commentText, :commentText) = true", Comment.class)
 				.setParameter("commentText", queryText).getResultList();
 
 		return list;

spring-data-postgres-fulltext-search/src/main/java/de/rieckpil/blog/PostgreSQLFTSFunction.java

@@ -26,16 +26,16 @@ public boolean hasParenthesesIfNoArguments() {
 		return false;
 	}
 
-	@SuppressWarnings("rawtypes")
 	@Override
 	public String render(Type type, List args, SessionFactoryImplementor factory) throws QueryException {
 
-		if (args == null || args.size() != 2) {
+		if (args == null || args.size() != 3) {
 			throw new IllegalArgumentException("The function must be passed 2 arguments");
 		}
 
-		String field = (String) args.get(0);
-		String searchString = (String) args.get(1);
-		return field + " @@ to_tsquery(" + searchString + ")";
+		String language = (String) args.get(0);
+		String field = (String) args.get(1);
+		String searchString = (String) args.get(2);
+		return field + " @@ to_tsquery('" + language + "', " + searchString + ")";
 	}
 }

spring-data-postgres-fulltext-search/src/main/resources/application.yml

@@ -4,4 +4,4 @@ spring:
     password: postgres
     url: jdbc:postgresql://localhost:5432/postgres  jpa:    hibernate:      ddl-auto: validate
     properties:      hibernate: 
-        dialect: de.rieckpil.blog.ExtendedPostgreSQLDialect
+        dialect: de.rieckpil.blog.ExtendedPostgreSQLDialect    show-sql: true

spring-data-postgres-fulltext-search/src/main/resources/data.sql

@@ -0,0 +1 @@
+INSERT INTO comment (id, comment_text, created_at) VALUES (1, to_tsvector('english', 'Out believe has request not how comfort evident. Up delight cousins we feeling minutes. Genius has looked end piqued spring. Down has rose feel find man. Learning day desirous informed expenses material returned six the. She enabled invited exposed him another. Reasonably conviction solicitude me mr at discretion reasonable. Age out full gate bed day lose.') ,NOW());