Hibernate Search是一个基于Hibernate ORM的全文搜索引擎,它提供了一种方便的方式来在数据库中存储、索引和搜索实体对象。当使用Hibernate ORM进行数据库操作时,可以通过Hibernate Search来增强搜索功能。
使用Hibernate Search按本地化字符串排序的具体步骤如下:
@Entity
@Indexed
public class MyEntity {
...
@ElementCollection
@MapKeyColumn(name = "locale")
@Column(name = "value")
@Field(index = Index.YES, analyze = Analyze.NO, store = Store.NO)
@SortableField(forField = "value_sort")
@FieldBridge(impl = LocaleMapFieldBridge.class)
private Map<String, String> localizedValues = new HashMap<>();
...
}
public class LocaleMapFieldBridge implements FieldBridge {
@Override
public void set(String name, Object value, Document document, LuceneOptions luceneOptions) {
if (value instanceof Map) {
Map<String, String> localizedValues = (Map<String, String>) value;
for (Map.Entry<String, String> entry : localizedValues.entrySet()) {
String locale = entry.getKey();
String localizedValue = entry.getValue();
Field field = new Field(name, localizedValue, luceneOptions.getStore(), luceneOptions.getIndex(),
luceneOptions.getTermVector());
field.setBoost(luceneOptions.getBoost());
field.setIndexOptions(luceneOptions.getIndexOptions());
field.setOmitNorms(luceneOptions.getOmitNorms());
field.setNumericPrecisionStep(luceneOptions.getNumericPrecisionStep());
field.setTokenStream(luceneOptions.getTokenStream());
field.setBoost(luceneOptions.getBoost());
field.setStringValue(localizedValue);
field.setLocale(locale);
document.add(field);
}
}
}
}
FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager);
QueryBuilder queryBuilder = fullTextEntityManager.getSearchFactory().buildQueryBuilder()
.forEntity(MyEntity.class).get();
Query query = queryBuilder.keyword().onField("localizedValues").ignoreAnalyzer()
.matching("searchTerm").createQuery();
Sort sort = new Sort(new SortField("localizedValues_sort", SortField.Type.STRING, true));
FullTextQuery fullTextQuery = fullTextEntityManager.createFullTextQuery(query, MyEntity.class);
fullTextQuery.setSort(sort);
List<MyEntity> results = fullTextQuery.getResultList();
需要注意的是,上述代码中的"searchTerm"需要替换为实际的搜索关键词。
以上就是使用Hibernate Search按本地化字符串排序的基本步骤。对于更详细的使用说明和示例代码,可以参考腾讯云的相关文档和示例代码:
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