带有 ORM id 子查询的休眠 FullTextEntityManager 查询未能触发

Question

我有一个全文查询，根据上一个问题的建议，我使用 Id 查询进行了过滤。由于某种原因，查询未能触发（我确定它之前触发过但是......）任何人都可以看到为什么吗？

    Class<?> entityClass = entityType.getJavaType();

    List<String> fields = buildFields(entityType.getProperties());

    FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(getEntityManager());

    SearchFactory searchFactory = fullTextEntityManager.getSearchFactory();
    QueryContextBuilder queryContextBuilder = searchFactory.buildQueryBuilder();
    QueryBuilder queryBuilder = queryContextBuilder.forEntity(entityClass).get();

    CriteriaBuilder idBuilder = m_storage.getCriteriaBuilder();
    CriteriaQuery idQuery = idBuilder.createQuery(entityClass);

    Root from = idQuery.from(entityClass);        
    idQuery.select(from.get("OID"));

    Subquery<Long> subquery = idQuery.subquery(Long.class);
    Root dateSQ = subquery.from(entityClass);

    subquery.select(idBuilder.max(dateSQ.get("modDateTime")));
    subquery.groupBy(dateSQ.get("surname"));



idQuery.where(idBuilder.in(from.get("modDateTime")).value(subquery));
    TypedQuery typedQuery = m_storage.createQuery(idQuery);
    List<Long> ids = typedQuery.getResultList();

    BooleanJunction<?> idJunction = queryBuilder.bool();
    for (Long id : ids) {
           idJunction.must(queryBuilder.keyword().onField("recId").matching(id).createQuery());
    }

    SearchOption searchOption = uriInfo.getSearchOption();

    Query query = queryBuilder.bool()
                .must(processSearchExpression(searchOption.getSearchExpression(), queryBuilder,
            fields.toArray(new String[fields.size()]))).filteredBy(idJunction.createQuery())
             .createQuery();

    FullTextQuery fullTextQuery = fullTextEntityManager.createFullTextQuery(query, entityClass);

    return fullTextQuery;

//fullTextQuery fails to run

如果我删除过滤器等

query = queryBuilder.bool()
                .must(processSearchExpression(searchOption.getSearchExpression(), queryBuilder,
            fields.toArray(new String[fields.size()])))
             .createQuery();

查询运行但显然没有按 ID 过滤。过滤器中有id。当我将 showSQL 设置为 true 时，如果我没有过滤器，我会看到一个查询，但是当我有过滤器时，我没有得到显示的查询（但没有抛出错误）

我似乎找不到任何问题？！

Answer 1

我不确定你说的 "the query doesn't fire" 是什么意思：

如果你调用typedQuery.getResultList();，肯定执行了一个查询。
Hibernate 搜索查询不使用 SQL，因此 "setting a showSQL to true" 无济于事。您需要使用与 trace Hibernate Search queries.

无论如何，我假设您的问题是查询没有 return 命中？这是您编写查询的方式的问题。你写了这个：

    BooleanJunction<?> idJunction = queryBuilder.bool();
    for (Long id : ids) {
           idJunction.must(queryBuilder.keyword().onField("recId").matching(id).createQuery());
    }

... 表示 "the field 'recId' must have every single one of these id values".

而不是 "must"，您应该使用 "should":

    BooleanJunction<?> idJunction = queryBuilder.bool();
    for (Long id : ids) {
           idJunction.should(queryBuilder.keyword().onField("recId").matching(id).createQuery());
    }

... 表示 "the field 'recId' must have at least one of these id values".

带有 ORM id 子查询的休眠 FullTextEntityManager 查询未能触发

hibernate FullTextEntityManager query with ORM id subquery failing to fire

hibernate

hibernate-search