Question

我有这个要求使用JBoss Datagrid来停止某些文档并使其可搜索。所以，我正在考虑使用Hibernate-search，这是JBoss的一部分。但是现在我被卡住了。这是我在JUnit中生成的一个简单代码。

@Test
public void testName() throws Exception {
    Cache<Object, Object> c = new DefaultCacheManager().getCache();
    c.put("id", new ProductDG("ean", "desc", newArrayList("image1")));

    ProductDG product = (ProductDG) c.get("id");
    assertTrue(product.getEAN().equals("ean"));

    SessionFactory factory = new AnnotationConfiguration().buildSessionFactory();
    Session session = factory.openSession();

    FullTextSession fts = getFullTextSession(session);
    fts.index(product);

}


@Indexed(index="Product")
class ProductDG {
    private String EAN;
    private String description;

    private List<String> images;

    ProductDG(String EAN, String description, List<String> images) {
        this.EAN = EAN;
        this.description = description;
        this.images = images;
    }

    String getEAN() {
        return EAN;
    }

    String getDescription() {
        return description;
    }

    List<String> getImages() {
        return images;
    }
}

但是我得到了这样的错误。

org.hibernate.HibernateException: Connection cannot be null when 'hibernate.dialect' not set
    at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:97)
    at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:67)
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:174)
    at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:75)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)
    at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1797)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1755)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1840)
    at com.tesco.adapters.JBossDataGrid.testName(JBossDataGrid.java:27)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:77)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:195)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

我认为我没有要连接的数据库。这怎么会起作用？有人告诉我，我必须使用JBoss Datagrid。我知道https://docs.jboss.org/hibernate/ogm/3.0/reference/en-US/html_single/但它太新了，而且几个月前刚刚问世。这可以完成吗？

Answer 1

JBoss数据网格使用Hibernate Search是正确的，但它只适用于索引和查询定义：您不需要通过“传统”Hibernate会话来使用它。

您不需要启动Hibernate SessionFactory
您甚至不需要在类路径上使用Hibernate ORM jar
您使用来自Hibernate Search的注释

要创建一个受您的域启发的示例，要使用它，您只需要在configuration of the Cache中启用索引。

@Test
public void testName() throws Exception {
   Cache<Object, Object> c = new DefaultCacheManager("configuration-file.xml").getCache();
   c.put("id", new ProductDG("ean", "desc", newArrayList("image1")));
   //at this point your Product is already indexed (assuming you don't use transactions)

   //Using the MatchAllDocsQuery we'll get a list of all instances:
   CacheQuery query = searchManager.getQuery(new MatchAllDocsQuery(), ProductDG.class);

   // Execute Query
   List objectList = query.list();

   for (Object prod : objectList)
      System.out.println(prod);

}

你的最后一个问题是关于Hibernate OGM。是的，也可以这样做，但您可能想阅读第4版的文档：

https://docs.jboss.org/hibernate/ogm/4.0/reference/en-US/html_single/

如何在JBoss datagrid中使用hibernate-search？

1 个答案: