发布于 2015-04-20 23:27:08 | 112 次阅读 | 评论: 0 | 来源: 网友投递
Hibernate Search 全文检索工具
Hibernate Search是在apache Lucene的基础上建立的主要用于Hibernate的持久化模型的全文检索工具。像Lucene这样的检索引擎能够给我们的项目在进行检索的时候带来 非常高的效率，但是它们在基本对象的检索时会有一些问题，比如不能实现检索内容跟实体的转换，Hibernate Search正是在这样的情况下发展起来的，基于对象的检索引擎，能够很方便的将检索出来的内容转换为具体的实体对象。此外Hibernate Search能够根据需要进行同步或异步的索引更新。
Hibernate Search 5.2.0.Beta1 发布了，该版本最值得关注的改进就是支持多租户。多租户这个概率来源于 Hibernate ORM，但 Hibernate Search 之前不允许你使用，因为它不会在全文本查询中应用相同的隔离。现在我们实现了这个特性，使用非常简单，请看 这里.
Hibernate Search是在apache Lucene的基础上建立的主要用于Hibernate的持久化模型的全文检索工具。像Lucene这样的检索引擎能够给我们的项目在进行检索的时候带来 非常高的效率，但是它们在基本对象的检索时会有一些问题，比如不能实现检索内容跟实体的转换，Hibernate Search正是在这样的情况下发展起来的，基于对象的检索引擎，能够很方便的将检索出来的内容转换为具体的实体对象。此外Hibernate Search能够根据需要进行同步或异步的索引更新。
其他方面的改进包括：
** Bug
* [HSEARCH-1684] - ResultTransformer ignores transformList on tuples
* [HSEARCH-1793] - CriteriaObjectInitializer causes too many object loads in cross hierarchy queries
* [HSEARCH-1804] - Boost on IndexedEmbedded properties
* [HSEARCH-1811] - Wildcard with multiple fields
* [HSEARCH-1824] - Hot-restarting a mutable SearchFactory has it "forget" the previously defined FilterDef and Analyzers
* [HSEARCH-1825] - NullEncodingTwoWayFieldBridge doesn't set the null marker when used as a FieldBridge
* [HSEARCH-1836] - Avoid NPE in NullEncodingTwoWayFieldBridge for non existing fields
** Improvement
* [HSEARCH-655] - Implements the FuturTask.cancel function in the MassIndexer
* [HSEARCH-1356] - Refactor WorkVisitor to match more the expectations on a Visitor pattern
* [HSEARCH-1762] - Improve javadocs of builtin bridges
* [HSEARCH-1831] - Correcting various typos in the documentation
* [HSEARCH-1850] - Avoid extending Startable and Stoppable interfaces as part of a Service contract
** New Feature
* [HSEARCH-1765] - Add support for deleting by Query
* [HSEARCH-1792] - Support multi-tenancy
* [HSEARCH-1837] - Allow Integrators to customize default directory providers for shortcuts
** Task
* [HSEARCH-1773] - org.hibernate.search.backend.impl.WorkVisitor not exported by engine osgi bundle
* [HSEARCH-1835] - Fix typo in javadoc of @Spatial
* [HSEARCH-1841] - Refactor DeleteByQuerySupport
* [HSEARCH-1843] - Bump hibernate search module slot name to "5.2"
* [HSEARCH-1845] - Upgrade to Pax Exam 4.4.0 to improve port allocation during tests