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Subject Deleting Documents
Date Tue, 17 Jun 2008 10:33:13 GMT
  I'm having difficulty deleting documents from an index. I am using lucene 2.3.1
  The program that I have created recursively searches a directory and indexes the documents
that it finds. The first thing I do is open the index for writing:
  writer = new IndexWriter(indexDir,analyzer);
  I then search the directory for certain types of files: text, pdf, doc, etc. I have a basic
algorithm that creates a unique id for each document and checks the index to see if this file
exists. If the file exists I then compare the date the file was last update against the date
it was last indexed. If the file has been updated since it was last indexed I try to remove
the file and re-index. I can successfully retrieve existing documents from the index using
the file id but I cannot remove a file. This is the code I use to remove the file.
  private void removeDocument(IndexWriter writer, File file) throws CorruptIndexException,
      IndexReader indexReader =;
      indexReader.deleteDocuments(new Term(IDHConstants.FILE_ID,FileNameUtil.getFieId(file)));
  This code doesn't work. I have tried IndexWriter.updateDocument and it also does not work.
Is is because I have an IndexWriter open when I try to delete the document?
  All help welcome.

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