Utility method to get SQL from Hibernate Criteria

CriteriaUtils.java

import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.hibernate.Criteria;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.internal.CriteriaImpl;
import org.hibernate.internal.SessionImpl;
import org.hibernate.loader.OuterJoinLoader;
import org.hibernate.loader.criteria.CriteriaLoader;
import org.hibernate.persister.entity.OuterJoinLoadable;

import java.lang.reflect.Field;

@Slf4j
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class CriteriaUtils {

    public static void logSQLFromCriteria(final Criteria criteria) {
        final CriteriaImpl c = (CriteriaImpl) criteria;
        final SessionImpl s = (SessionImpl) c.getSession();
        final SessionFactoryImplementor factory = s.getSessionFactory();
        final String[] implementors = factory.getImplementors(c.getEntityOrClassName());
        final CriteriaLoader loader = new CriteriaLoader((OuterJoinLoadable)
                factory.getEntityPersister(implementors[0]), factory, c, implementors[0],
                s.getLoadQueryInfluencers());
        try {
            final Field f = OuterJoinLoader.class.getDeclaredField("sql");
            f.setAccessible(true);
            log.debug((String) f.get(loader));
        } catch (final NoSuchFieldException | IllegalAccessException e) {
            log.error(e.getMessage(), e);
        }
    }

}