我试图使用writer.update(Term t，Document doc)方法更新索引中的文档。如果我在Term中指定了一个TextField，则更新成功，但当我在Term中提供一个LongPoint时，则更新失败< br >我的代码示例:< br >

package com.luceneserver.core;

import java.io.IOException;

import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field.Store;
import org.apache.lucene.document.LongPoint;
import org.apache.lucene.document.StoredField;
import org.apache.lucene.document.TextField;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.store.RAMDirectory;

public class SampleDocUpdates {

    public static void main(String[] args) throws IOException {
        IndexWriter writer = new IndexWriter(new RAMDirectory(), new IndexWriterConfig());
        IndexReader reader;
        IndexSearcher searcher;


        // first document in the index
        Document initialDoc = new Document();
        // adding a text field
        initialDoc.add(new TextField("foo_text", "abc", Store.YES));
        // adding a numeric field
        initialDoc.add(new LongPoint("foo_number", 1000));
        // adding stored field to display hits
        initialDoc.add(new StoredField("foo_number", 1000));


        writer.addDocument(initialDoc);


        // second document in index which should update the first one..
        Document newDoc = new Document();
        newDoc.add(new TextField("foo_text", "def", Store.YES));
        newDoc.add(new LongPoint("foo_number", 2000));
        newDoc.add(new StoredField("foo_number", 2000));


        // update doc with foo_text:abc with the newDoc instance.
        writer.updateDocument(new Term("foo_text", "abc"), newDoc);

        reader = DirectoryReader.open(writer);
        searcher = new IndexSearcher(reader);

        ScoreDoc[] scoreDocs = searcher.search(new MatchAllDocsQuery(), 1000).scoreDocs;

        for (ScoreDoc scoreDoc : scoreDocs) {
            System.out.println(searcher.doc(scoreDoc.doc).get("foo_text")+"\t"+searcher.doc(scoreDoc.doc).get("foo_number"));
            //'def  2000'
        }


    }

}

这段代码成功地用第二个文档更新了初始文档...< br >但是如果我使用

writer.updateDocument（新术语（“foo_number”，1000），newDoc）；

它失败了...我的要求是通过基于LongPoint字段惟一地标识文档来更新文档..< br >文档(lucene 6.3.0)只有updateDocuments()以术语作为选择标准，没有LongPoint字段。< br >有没有其他方法可以实现这一点？