本文整理汇总了Java中javax.persistence.criteria.CriteriaBuilder.createTupleQuery方法的典型用法代码示例。如果您正苦于以下问题：Java CriteriaBuilder.createTupleQuery方法的具体用法？Java CriteriaBuilder.createTupleQuery怎么用？Java CriteriaBuilder.createTupleQuery使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类javax.persistence.criteria.CriteriaBuilder的用法示例。
在下文中一共展示了CriteriaBuilder.createTupleQuery方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: search
import javax.persistence.criteria.CriteriaBuilder; //导入方法依赖的package包/类
@Override
public Optional<SearchResponse> search(final ServiceUser user,
final SearchRequest request){
final String dataSourceUuid = request.getQuery().getDataSource().getUuid();
try (final Session session = database.openSession()) {
final CriteriaBuilder cb = session.getCriteriaBuilder();
final CriteriaQuery<Tuple> cq = cb.createTupleQuery();
final Root<T> root = cq.from(this.dtoClass);
cq.multiselect(this.fields.stream()
.map(f -> root.get(f.getName()))
.collect(Collectors.toList()));
final Predicate requestPredicate = getPredicate(cb, root, request.getQuery().getExpression());
final Predicate dataSourcePredicate = cb.equal(root.get(QueryableEntity.DATA_SOURCE_UUID), dataSourceUuid);
cq.where(cb.and(requestPredicate, dataSourcePredicate));
final List<Tuple> tuples = session.createQuery(cq).getResultList();
final SearchResponse searchResponse = projectResults(request, tuples);
return Optional.of(searchResponse);
}
}