Examples of org.apache.lucene.index.IndexWriter.deleteDocuments()

Class org.apache.lucene.index.IndexWriter

Examples of org.apache.lucene.index.IndexWriter.deleteDocuments()

org.apache.lucene.index.IndexWriter.deleteDocuments()
Deletes the document(s) containing term.
NOTE: if this method hits an OutOfMemoryError you should immediately close the writer. See above for details.
@param term the term to identify the documents to be deleted @throws CorruptIndexException if the index is corrupt @throws IOException if there is a low-level IO error

      doc.add(newField("body","body", Field.Store.NO, Field.Index.NOT_ANALYZED));
      writer.addDocument(doc);
    }
    
    writer.forceMerge(1);
    writer.deleteDocuments(new Term("id","0"));
    writer.close();


    IndexReader reader = IndexReader.open(dir, true);
    IndexSearcher search = newSearcher(reader);
    assertTrue(reader.hasDeletions());

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    * @param string
    */
   public static void removeByTerm(Directory dir, String term) throws IOException {
      IndexWriterConfig indexWriterConfig = new IndexWriterConfig(LuceneSettings.LUCENE_VERSION, LuceneSettings.analyzer);
      IndexWriter iw = new IndexWriter(dir, indexWriterConfig);
      iw.deleteDocuments(new Term("body", term));
      iw.commit();
      iw.close();
   }


   /**

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                for (Job job : transaction.jobs()) {
                    log.info("Indexing: " + job.command() + " " + job.objects().count());
                    if (job.command() == Command.DELETE) {
                        for (Enumeration iter = job.objects().objectEnumerator(); iter.hasMoreElements();) {
                            Term term = (Term) iter.nextElement();
                            writer.deleteDocuments(term);
                        }
                    } else if (job.command() == Command.ADD) {
                        for (Enumeration iter = job.objects().objectEnumerator(); iter.hasMoreElements();) {
                            Document document = (Document) iter.nextElement();
                            writer.addDocument(document, analyzer());

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            // tree deletion is handled on the parent node
            String path = concat(getPath(), name);
            try {
                IndexWriter writer = context.getWriter();
                // Remove all index entries in the removed subtree
                writer.deleteDocuments(newPathTerm(path));
                writer.deleteDocuments(new PrefixQuery(newPathTerm(path + "/")));
                this.context.indexUpdate();
            } catch (IOException e) {
                throw new CommitFailedException("Lucene", 5,
                        "Failed to remove the index entries of"

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            String path = concat(getPath(), name);
            try {
                IndexWriter writer = context.getWriter();
                // Remove all index entries in the removed subtree
                writer.deleteDocuments(newPathTerm(path));
                writer.deleteDocuments(new PrefixQuery(newPathTerm(path + "/")));
                this.context.indexUpdate();
            } catch (IOException e) {
                throw new CommitFailedException("Lucene", 5,
                        "Failed to remove the index entries of"
                                + " the removed subtree " + path, e);

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    * @param term
    */
   public static void removeByTerm(Directory dir, String term) throws IOException {
      IndexWriterConfig indexWriterConfig = new IndexWriterConfig(LuceneSettings.LUCENE_VERSION, LuceneSettings.analyzer);
      IndexWriter iw = new IndexWriter(dir, indexWriterConfig);
      iw.deleteDocuments(new Term("body", term));
      iw.commit();
      iw.close();
   }


   /**

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        synchronized (directory) {
            if (ids != null && ids.length > 0) {
                IndexWriter writer = new IndexWriter(directory, new SimpleAnalyzer(), IndexWriter.MaxFieldLength.LIMITED);
                try {
                    for (int i = 0; i < ids.length; i++) {
                        writer.deleteDocuments(new Term(LuceneAuditor.FIELD_ID, ids[i]));
                    }
                    writer.commit();
                } finally {
                    writer.close();
                }

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    * @param term
    */
   public static void removeByTerm(Directory dir, String term) throws IOException {
      IndexWriterConfig indexWriterConfig = new IndexWriterConfig(LuceneSettings.LUCENE_VERSION, LuceneSettings.analyzer);
      IndexWriter iw = new IndexWriter(dir, indexWriterConfig);
      iw.deleteDocuments(new Term("body", term));
      iw.commit();
      iw.close();
   }


   /**

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      for (int i = 0; i < numDeletedDocs; i++) {
        w.addDocument(new Document());
      }
      w.commit();
      w.deleteDocuments( new MatchAllDocsQuery() );
      _TestUtil.keepFullyDeletedSegments(w);
      w.commit();


      if (0 < numDeletedDocs)
        Assert.assertTrue("writer has no deletions", w.hasDeletions());

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      //how awesome to force programmer to hardcode library version with no reasonable default
      IndexWriterConfig cfg = new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35));
      IndexWriter indexWriter = new IndexWriter(index, cfg);
      for (Document doc : docs) {
        LOGGER.fine("Updating index for document: " + doc.getFieldable(AWF__ID));
        indexWriter.deleteDocuments(new Term(AWF__ID, doc.getFieldable(AWF__ID).stringValue()));
        StringBuilder all = new StringBuilder();
        for (Fieldable f : doc.getFields()) {
          all.append(f.stringValue());
          all.append(' ');
        }

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