Hibernate搜索不索引/重新索引实体

Question

@Entity
@Indexed
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "userId")
    private Long id;
    (...)
    @Column(nullable = false, unique = true)
    @Field(index = Index.YES, analyze=Analyze.YES, store=Store.NO)
    private String email;
    (...)
    @Column(nullable = false, unique = true)
    @Field(index = Index.YES, analyze=Analyze.YES, store=Store.NO)
    private String username;
    (...)
}

@Repository
public class UserDAOImpl implements UserDAO {

    @Autowired
    private SessionFactory sessionFactory;

    @Override
    public long save(User toSave) {

        return (Long) this.sessionFactory.getCurrentSession().save(toSave);
    }
(...)
}

@Override
    public List<User> searchByEmail(String email) throws InterruptedException {

        return generateHibernateSearchQueryFor("email", email).list();
    }

    private org.hibernate.Query generateHibernateSearchQueryFor(String field, String searchParam) {

        FullTextSession fullTextSession = Search.getFullTextSession(sessionFactory.getCurrentSession());
        QueryBuilder queryBuilder = fullTextSession.getSearchFactory().buildQueryBuilder().forEntity(User.class).get();

        org.apache.lucene.search.Query lQuery = queryBuilder.keyword().onFields(field).matching(searchParam).createQuery();
        org.hibernate.Query fullTextQuery = fullTextSession.createFullTextQuery(lQuery, User.class);

        return fullTextQuery;
    }

<bean id="hibernate4AnnotatedSessionFactory"
          class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="packagesToScan" value="me.ksiazka.model" />
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                <prop key="hibernate.show_sql">false</prop>
                <prop key="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory</prop>
                <prop key="hibernate.cache.use_second_level_cache">true</prop>
                <prop key="hibernate.cache.use_query_cache">true</prop>
                <prop key="hibernate.hbm2ddl.auto">create</prop>

                <prop key="hibernate.search.default.directory_provider">filesystem</prop>
                <prop key="hibernate.search.default.indexBase">src/searching_indexes</prop>
            </props>
        </property>
    </bean>

    @Test
    @DatabaseSetup("classpath:/testsDataset.xml")
    public void searchByEmailTest() {

        User u1 = new User("Maciej", "Adamowicz", "k2", "[e-mail]", "MacAda");
        userDAO.save(u1);

        List<User> u = null;
        try {
            //It worked at first - as new user was saved with hibernate he got his index in hibernate search indexes folder and searching found him.
            u = searchService.searchByEmail("[e-mail]");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        //I know there should be asserts, its just for simplification for need of moment.
        System.out.println(":: " + u.size());
        System.out.println(":: " + u.get(0).getName());
    }


    List<User> u2 = null;
    try {
        //[e-mail] is in db - setted up by @DatabaseSetup
        u2 = searchService.searchByEmail("[e-mail]");
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    //This didnt work, rows putted into db by dbunit doesn't have indexes in my indexing folder.
    System.out.println(":: " + u2.size());
    System.out.println(":: " + u2.get(0).getName());
}

@Before
    public void setupDatabase() {

        if(!doneBefore) {

            try {
                //It calls createIndexer().startAndWait() to make sure everything is indexed before test
                searchService.reindex();
            } catch (InterruptedException e) {    
                e.printStackTrace();
            }

            User u1 = new User("Maciej", "Adamowicz", "k2", "[e-mail]", "MacAda");
            userDAO.save(u1);

            doneBefore = true;
        }

    }

    @Test
    public void searchByEmailTest() {

        List<User> u = null;
        try {
            u = searchService.searchByEmail("[e-mail]");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        //Also asserts here, I know.
        System.out.println(":: " + u.size());
        System.out.println(":: " + u.get(0).getName());
    }

编辑：

在潜在的答案之后，我做了更多的测试。考虑到搜索有时会导致两倍或三倍的行，我尝试了.purgeall()并将索引提供程序更改为RAM，以确保在开始测试时索引是干净的。它没有根本改变。为了构建索引，我使用了.startandwait()。尝试用.index()“手工”构建它，但在尝试使用FullTextSession时遇到了一些嵌套事务问题。显式提交事务（或设置@rollback(false)-两者都尝试）也不起作用。我在Hibernate搜索文档链接中找到的所有东西。如果我在搜索之前用DAO保存一些东西，索引和搜索工作很好，但是在之前做同样的事情，然后搜索就不起作用了。

Answer 1

当我记得正确的时候，Hibernate Search将在您提交事务时更新索引。

这对于普通代码没有问题，但在测试中，这种行为可能会导致问题，因为测试的一个常见模式是，在开始测试时启动事务，在测试结束时将事务返回，但从不提交它们。

要验证这是问题的原因，请创建一个测试，启动一个新的事务，修改某些内容，然后提交事务。然后在提交之后，检查hiberante搜索索引。