筛选器的编写及其在全文搜索中的应用  

Filter Writing and Its Application to Full-Text Search

作　　者：田家斌[1] 许雯[1] 陈骁[1] 

机构地区：[1]北方计算中心,北京100091

出　　处：《信息工程大学学报》2007年第4期434-438,共5页Journal of Information Engineering University

摘　　要：SQL Server的全文搜索功能既可以对纯文本字段进行全文查询,也可以对非结构化的二进制字段进行全文查询,后者在建立索引时使用了筛选器。该数据库提供了一些针对微软自身产品文档的筛选器,对于非微软产品的文档则没有提供,这就涉及到自行编写筛选器的问题。文章就筛选器的编写及其在M icrosoft SQL Server 2005中的应用作了一些探讨。SQL Server full text search support can query both pure text fields and unstructured binary fields. When dealing with the latter one, SQL Server uses filters to extract text and property information from the files stored in binary fields to index them. SQL Server provides filters only for Microsoft products. Programmers need to write their own filters for their files of specific formats. This article describes how to write specific filters and how to use them in Microsoft SQL Server 2005.

关 键 词：全文搜索 筛选器 IFilter 动态链接库 

分 类 号：TN393.09[电子电信—物理电子学]