Lucene .NET IndexWriter DeleteDocuments不工作

Question

这是代码:

Try
        Dim util As New IndexerUtil()
        Dim dir As Lucene.Net.Store.Directory = FSDirectory.Open(New DirectoryInfo(util.getIndexDir()))
        Dim indexWriter As New IndexWriter(dir, New SimpleAnalyzer(), indexWriter.MaxFieldLength.UNLIMITED)

        Dim numDocs As Integer = indexWriter.NumDocs()

        indexWriter.DeleteDocuments(New Term("id", insightId))
        indexWriter.Optimize()
        indexWriter.Commit()
        indexWriter.Close()
        numDocs = indexWriter.NumDocs()

    Catch ex As Exception
        LOG.Error("Could not remove insight " + insightId + " from index", ex)
    End Try

两次都是numDocs = 85

我还有一个我写的小gui应用程序,它读取索引并以漂亮的格式打印文档.具有等于​​insightId的id字段的doc肯定存在,并且在"删除"之后存在STILL.

以下是如何创建id字段

doc.Add(New Field("id", insightID, Field.Store.YES, Field.Index.ANALYZED)) //insightID is an integer

Answer 1

正如您可能在最近的帖子中发现的那样,您的ID列未被正确编入索引,因为SimpleAnalyzer使用LetterTokenizer,它只返回字母.

考虑使用KeywordAnalyzer代替id字段.