你能帮助我吗?
我正在实施 Hibernate Search,以检索本地化网站上的全局搜索结果(葡萄牙语和英语内容)
为此,我遵循了 Hibernate Search 文档中指示的步骤:http: //docs.jboss.org/hibernate/search/4.5/reference/en-US/html_single/#d0e4141
除了实体本身的特定配置外,我还按照本文档中的说明实现了一个“LanguageDiscriminator”类。
因为我没有得到我期望的结果(例如我的实体存储了文本“Capuchinho”,但是当我搜索“capucho”时我没有得到任何命中),我决定尝试调试执行,并尝试了解我配置的分析器是否正在使用。
在为数据库中的实体创建新记录时,我可以看到“LanguageDiscriminator”中的“getAnalyzerDefinitionName()”方法被调用。伟大的。但是当我执行搜索时,同样的情况不会发生。谁能解释我为什么?
我在下面发布了我的代码的关键部分。非常感谢任何反馈!
这是我要索引的一个实体
@Entity
@Table(name="NEWS_HEADER")
@Indexed
@AnalyzerDefs({
@AnalyzerDef(name = "en",
tokenizer = @TokenizerDef(factory = StandardTokenizerFactory.class),
filters = {
@TokenFilterDef(factory = LowerCaseFilterFactory.class),
@TokenFilterDef(factory = SnowballPorterFilterFactory.class,
params = {@Parameter(name="language", value="English")}
)
}
),
@AnalyzerDef(name = "pt",
tokenizer = @TokenizerDef(factory = StandardTokenizerFactory.class),
filters = {
@TokenFilterDef(factory = LowerCaseFilterFactory.class),
@TokenFilterDef(factory = SnowballPorterFilterFactory.class,
params = {@Parameter(name="language", value="Portuguese")}
)
}
)
})
public class NewsHeader implements Serializable {
static final long serialVersionUID = 20140301L;
private int id;
private String articleHeader;
private String language;
private Set<NewsParagraph> paragraphs = new HashSet<NewsParagraph>();
/**
* @return the id
*/
@Id
@Column(name="ID")
@GeneratedValue(strategy=GenerationType.AUTO)
@DocumentId
public int getId() {
return id;
}
/**
* @param id the id to set
*/
public void setId(int id) {
this.id = id;
}
/**
* @return the articleHeader
*/
@Column(name="ARTICLE_HEADER")
@Field(index=Index.YES, store=Store.NO)
public String getArticleHeader() {
return articleHeader;
}
/**
* @param articleHeader the articleHeader to set
*/
public void setArticleHeader(String articleHeader) {
this.articleHeader = articleHeader;
}
/**
* @return the language
*/
@Column(name="LANGUAGE")
@Field
@AnalyzerDiscriminator(impl=LanguageDiscriminator.class)
public String getLanguage() {
return language;
}
...
}
这是我的 LanguageDiscriminator 类
public class LanguageDiscriminator implements Discriminator {
@Override
public String getAnalyzerDefinitionName(Object value, Object entity, String field) {
String result = null;
if (value != null) {
result = (String) value;
}
return result;
}
}
这是我的 SearchDAO 中的搜索方法
public List<NewsHeader> searchParagraph(String patternStr) {
Session session = null;
Transaction tx;
List<NewsHeader> result = null;
try {
session = sessionFactory.getCurrentSession();
FullTextSession fullTextSession = Search.getFullTextSession(session);
tx = fullTextSession.beginTransaction();
// Create native Lucene query using the query DSL
QueryBuilder queryBuilder = fullTextSession.getSearchFactory()
.buildQueryBuilder().forEntity(NewsHeader.class).get();
org.apache.lucene.search.Query luceneSearchQuery = queryBuilder
.keyword()
.onFields("articleHeader", "paragraphs.content")
.matching(patternStr)
.createQuery();
// Wrap Lucene query in a org.hibernate.Query
org.hibernate.Query hibernateQuery =
fullTextSession.createFullTextQuery(luceneSearchQuery, NewsHeader.class, NewsParagraph.class);
// Execute search
result = hibernateQuery.list();
} catch (Exception xcp) {
logger.error(xcp);
} finally {
if ((session != null) && (session.isOpen())) {
session.close();
}
}
return result;
}