Question

我正在使用Lucene.net并且我正在尝试将Exception读取为EOF而我试图获取术语频率向量，这是我的代码：

public class DocumentData
{
    public int Id { get; set; }

    public string Title { get; set; }

    public string Body { get; set; }    
}

public static string CONTENT = "Body";

// Method that adds a new document to the index
public static void AddToLuceneIndex(DocumentData documentData, IndexWriter writer)
{
    //remove older index entry
    var searchQuery = new TermQuery(new Term("Id", documentData.Id.ToString()));
    writer.DeleteDocuments(searchQuery);

    //add a new index entry
    var doc = new Document();

    //add lucene fields mapped to db fields
    doc.Add(new Field("Id", documentData.Id.ToString() ?? "", Field.Store.YES, Field.Index.NOT_ANALYZED));
    doc.Add(new Field("Title", documentData.Title ?? "", Field.Store.YES, Field.Index.ANALYZED));
    doc.Add(new Field(CONTENT, documentData.Body ?? "", Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.YES));

    //add entry to index
    writer.AddDocument(doc);
}    

// Gets the term frequency vectors for the ids in docs
private static ITermFreqVector[] GetVectors(int[] docs, FSDirectory directory)
{
    var reader = IndexReader.Open(directory, true);
    var answer = docs.Select(x => reader.GetTermFreqVector(x, LuceneSearch.CONTENT)).ToArray(); // the exception is thrown at this point
    reader.Dispose();
    return answer;
}

我向索引添加了一些文档，然后我得到了这些文档的频率向量，一切正常，但是当我再次添加文档并调用GetVectors函数时，抛出了异常。我该如何解决这个问题？

Lucene.net - 阅读过去的eof Exception

0 个答案: