概要
客户要求改善 SharePoint 2007的搜索功能,我们要自定义开发搜索功能,一翻调查和研究,sharepoint 的搜索用到KeywordSearchQuery和FullTextSearchQuery 两种方式,因为我们要用到自定义的sharepoint list字段做为过虑条件,所以采用FullTextSearchQuery 来开发。
设计
FullTextSearchQuery 做sharepoint 2007二次开发要用到以下组件:
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using Microsoft.Office.Server;
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using Microsoft.Office.Server.Search;
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using Microsoft.Office.Server.Search.Query;
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在sharepoint 2007中,我们如下scope():
默认的有people和all sites两个scope。我们以All sites举例。
sharepoint Content sources 在爬虫时的流程图(方便理解scope()内容的来源)
以下是查询的流程图:
用户使用查询时,sharepoint对于用户的安全检查:
以上说明仅供读者了解sharepoint查询时要做的工作.
Microsoft.SharePoint.Search.Query 命名空间包括三个查询类:
为自定义搜索应用程序选择查询类
若要确定用于自定义搜索应用程序(FullTextSqlQuery 或 KeywordQuery)的适当的类,请考虑希望应用程序代码支持的搜索查询中的复杂级别。
下面的列表标识仅受使用 FullTextSqlQuery 类的 SQL 搜索语法支持的附加查询元素:FREETEXT、CONTAINS、LIKE和ORDER BY.
代码设计
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public class SharePointSearch
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string queryStr = @"select hitHighlightedProperties,size,Write, author, path,
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hitHighlightedSummary,title,contentclass
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from scope() where " +
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"\"scope\" = '{0}' AND FREETEXT(defaultproperties, '{1}') " ;
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string conditionSearchSource = " AND CONTAINS(path,'{0}')" ;
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/// Default constructor.
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public SharePointSearch()
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#region Public Methods
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/// <param name="scope"></param>
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/// <param name="searchSource"></param>
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/// <param name="keyword"></param>
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/// <param name="rowLimit"></param>
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/// <returns></returns>
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public DataTable GetSearchResultByKeyWord( string scope, string searchSource, string keyword, int rowLimit)
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string query = string .Format( this .queryStr, scope, keyword);
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if (! string .IsNullOrEmpty(searchSource))
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query += string .Format( this .conditionSearchSource, searchSource);
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return this .CustomSearch(query, rowLimit);
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/// <param name="query"></param>
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/// <param name="rowLimit"></param>
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/// <returns></returns>
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public DataTable GetSearchResultByQuery( string query, int rowLimit)
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return this .CustomSearch(query, rowLimit);
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#region Private Methods
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/// Excute search query
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/// <param name="query"></param>
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/// <param name="rowLimit"></param>
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/// <returns></returns>
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private DataTable CustomSearch( string query, int rowLimit)
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DataTable result = new DataTable();
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string url = SPContext.Current.Web.Url;
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using (SPSite site = new SPSite(url))
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ServerContext context = ServerContext.GetContext(site);
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FullTextSqlQuery fullQuery = new FullTextSqlQuery(site);
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fullQuery.Culture = System.Globalization.CultureInfo.InvariantCulture;
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fullQuery.QueryText = query;
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fullQuery.ResultTypes = ResultType.RelevantResults;
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fullQuery.EnableStemming = false ;
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fullQuery.IgnoreAllNoiseQuery = true ;
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fullQuery.TrimDuplicates = true ;
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fullQuery.KeywordInclusion = KeywordInclusion.AnyKeyword;
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fullQuery.RowLimit = rowLimit;
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if (SPSecurity.AuthenticationMode != System.Web.Configuration.AuthenticationMode.Windows)
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fullQuery.AuthenticationType = QueryAuthenticationType.PluggableAuthenticatedQuery;
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fullQuery.AuthenticationType = QueryAuthenticationType.NtAuthenticatedQuery;
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ResultTableCollection rt = fullQuery.Execute();
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ResultTable resultTable = rt[ResultType.RelevantResults];
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result.Load(resultTable, LoadOption.OverwriteChanges);
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而为什么FullTextSqlQuery 的属性是这样设置的,因为能过moss工具产生的xml结果图如下:
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<?xml version= "1.0" encoding= "utf-8" ?>
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<QueryPacket xmlns= "urn:Microsoft.Search.Query" Revision= "1000" >
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<Query domain= "QDomain" >
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<SupportedFormats><Format>urn:Microsoft.Search.Response.Document.Document</Format></SupportedFormats>
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<QueryText language= "en-US" type= "MSSQLFT" ><![CDATA[ SELECT Title, Rank, Size, Description, Write, Path FROM portal..scope() WHERE FREETEXT(DefaultProperties, 'test' ) AND ( ( "SCOPE" = 'All Sites' ) ) ORDER BY "Rank" DESC ]]></QueryText>
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<Range><StartAt>1</StartAt><Count>20</Count></Range>
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<EnableStemming> false </EnableStemming>
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<TrimDuplicates> true </TrimDuplicates>
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<IgnoreAllNoiseQuery> true </IgnoreAllNoiseQuery>
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<ImplicitAndBehavior> false </ImplicitAndBehavior>
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<IncludeRelevanceResults> true </IncludeRelevanceResults>
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<IncludeSpecialTermResults> false </IncludeSpecialTermResults>
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<IncludeHighConfidenceResults> false </IncludeHighConfidenceResults>
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</Query></QueryPacket> |
如果sharepoint里item内容语言是en-us的话,一定要在IE浏览器里设置:
把english[en]放到最上面。
作者:spring yang
出处:http://www.cnblogs.com/springyangwc/
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