可扩展数据库搜索引擎的研究和实现

Research and Realization of the Extensible Database Search Engine

将元数据与搜索引擎结合起来,通过元数据对集成数据源的描述,屏蔽了数据源的分布性和异构性,为索引和查询提供了统一的数据接口,在需要加入新的数据源时,只需要实现相应的元数据提取和转换,对搜索引擎其他各部件并无影响,提高了系统的扩展性。在搜索引擎的实现过程中,利用Lucene没有具体的数据源、支持增量索引和中文检索等特点,在Lucene的基础上进行了二次开发和应用,实现了一个可扩展的、高效的数据库搜索引文擎。

The metadata was combined with search engines,the meta-data description of the integrated data sources which shields the distribution and heterogeneity of the data sources,provides a unified data interface for the indexing and querying,in the need to add new data source,we only need to develop the corresponding metadata extraction and conversion tool,and can not affect the other components of the search engine,which improves the scalability of the system. During the developing process of the search engine,we use the virtue of lucene which has no specific data sources,supports incremental indexing and Chinese retrieval,it achieves a scalable and efficient database search engine based on a secondary development and application of the Lucene.