Optimize QuerydslJpaPredicateExecutor.exists.

Fixes #2333 Original pull request #2373
spring-projects · Dec 3, 2021 · 45b860f · 45b860f
1 parent fda5c5a
commit 45b860f
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/...in/java/org/springframework/data/jpa/repository/support/QuerydslJpaPredicateExecutor.java b/...in/java/org/springframework/data/jpa/repository/support/QuerydslJpaPredicateExecutor.java
@@ -40,6 +40,7 @@
 import com.querydsl.core.types.EntityPath;
 import com.querydsl.core.types.OrderSpecifier;
 import com.querydsl.core.types.Predicate;
+import com.querydsl.core.types.dsl.Expressions;
 import com.querydsl.core.types.dsl.PathBuilder;
 import com.querydsl.jpa.JPQLQuery;
 import com.querydsl.jpa.impl.AbstractJPAQuery;
@@ -225,7 +226,7 @@ public long count(Predicate predicate) {
 	 */
 	@Override
 	public boolean exists(Predicate predicate) {
-		return createQuery(predicate).fetchCount() > 0;
+		return createQuery(predicate).select(Expressions.ONE).fetchFirst() != null;
 	}
 
 	/**