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From Simon Willnauer <simon.willna...@googlemail.com>
Subject Re: what is the fdx file exactly mean
Date Mon, 25 Jun 2012 19:44:54 GMT
see http://lucene.apache.org/core/3_6_0/fileformats.html#field_index
for file format documentation.

simon

On Mon, Jun 25, 2012 at 5:28 AM, wangjing <ppm10103@gmail.com> wrote:
> .fdx file  contains, for each document, a pointer to its field data.
>
> BUT fdx is contains pointer to WHAT? it's a pointer of  field data
> offset in the fdt file?
>
> my app is
>
>                        File file = new File(path);
>                        FSDirectory directory = FSDirectory.open(file);
>                        IndexWriterConfig conf = new
> IndexWriterConfig(Version.LUCENE_36,new
> StandardAnalyzer(Version.LUCENE_36));
>                        conf.setOpenMode(IndexWriterConfig.OpenMode.CREATE);
>                        IndexWriter iw = new IndexWriter(directory, conf);
>                        iw.setInfoStream(System.out);
>                        Document doc = new Document();
>                        Field storeYes = new Field("content1", "my storeyes
test",
>                                        Store.YES, Index.ANALYZED);
>                        Field storeNo = new Field("content2", "my storeno
test", Store.YES,
>                                        Index.ANALYZED);
>                        doc.add(storeYes);
>                        doc.add(storeNo);
>                        Document doc1 = new Document();
>                        Field storeYes1 = new Field("doc1content1",
>                                        "doc1 my storeyes test", Store.YES,
Index.ANALYZED);
>                        doc1.add(storeYes1);
>                        iw.addDocument(doc1);
>                        iw.addDocument(doc);
>                        iw.forceMerge(1);
>                        iw.close();
>
> the fdx content is blow:
> 00 00 00 03 00 00 00 00  00 00 00 04 00 00 00 00
> 00 00 00 1D
>
> the fdt content is
> 00 00 00 03 01 00 01 15  64 6F 63 31 20 6D 79 20
> 73 74 6F 72 65 79 65 73  20 74 65 73 74 02 01 01
> 10 6D 79 20 73 74 6F 72  65 79 65 73 20 74 65 73
> 74 02 01 0F 6D 79 20 73  74 6F 72 65 6E 6F 20 74
> 65 73 74
>
>
> the uint64 value in fdx  is  4 and 29  in decimal ,it's which file's offset?
>
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