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Optimize QuerydslJpaPredicateExecutor.exists.

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Fixes #2333
Original pull request #2373
This commit is contained in:
Yanming Zhou
2021-12-03 12:22:03 +08:00
committed by Jens Schauder
parent 9b7a81ec87
commit 24e3a0736b
1 changed files with 2 additions and 1 deletions
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3
src/main/java/org/springframework/data/jpa/repository/support/QuerydslJpaPredicateExecutor.java
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@@ -37,6 +37,7 @@ import com.querydsl.core.NonUniqueResultException;
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;
@@ -176,7 +177,7 @@ public class QuerydslJpaPredicateExecutor<T> implements QuerydslPredicateExecuto
*/
@Override
public boolean exists(Predicate predicate) {
return createQuery(predicate).fetchCount() > 0;
return createQuery(predicate).select(Expressions.ONE).fetchFirst() != null;
}
/**