IN DOCUMENT: Stored fields are represented by two files:
The field index, or .fdx file. This contains, for each document, a pointer to its field data, as follows: FieldIndex (.fdx) --> <FieldValuesPosition> SegSize FieldValuesPosition --> Uint64 This is used to find the location within the field data file of the fields of a particular document. Because it contains fixed-length data, this file may be easily randomly accessed. The position of document n 's field data is the Uint64 at n*8 in this file. 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 HEX 04 and 1D is FieldValuesPosition which Position？ in fdt 04 offset is HEX 03 ?！obviously it's not right. On Tue, Jun 26, 2012 at 3:44 AM, Simon Willnauer <simon.willna...@googlemail.com> wrote: > 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 <ppm10...@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? >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
