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

    writer.close();
  }
  
  private void deleteDocument() throws IOException {
    IndexWriter writer = new IndexWriter( dir, a, false, MaxFieldLength.LIMITED );
    writer.deleteDocuments( new Term( "t_text1", "del" ) );
    // To see negative idf, keep comment the following line
    //writer.optimize();
    writer.close();
  }

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


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

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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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                        if ( deleted != null )
                        {
                            // Deleting the document loses history that it was delete,
                            // so incrementals wont work. Therefore, put the delete
                            // document in as well
                            w.deleteDocuments( new Term( ArtifactInfo.UINFO, deleted ) );
                            w.addDocument( d );
                        }
                    }
                }

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            doc.add( new Field( ArtifactInfo.LAST_MODIFIED, //
                Long.toString( System.currentTimeMillis() ), Field.Store.YES, Field.Index.NO ) );


            IndexWriter w = context.getIndexWriter();
            w.addDocument( doc );
            w.deleteDocuments( new Term( ArtifactInfo.UINFO, uinfo ) );
            context.updateTimestamp();
        }
    }


    // ==

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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 + "/")));
        } catch (IOException e) {
            throw new CommitFailedException(
                    "Lucene", 5, "Failed to remove the index entries of"
                    + " the removed subtree " + path, e);

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

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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"

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        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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                  }
                }


                if (allIDs.size() > 0 && threadRandom.nextDouble() <= deleteChance) {
                  String randomID = allIDs.get(threadRandom.nextInt(allIDs.size()));
                  w.deleteDocuments(new Term("id", randomID));
                  rt.delete(randomID);
                  values.put(randomID, missing);
                }


                if (threadRandom.nextDouble() <= reopenChance || rt.size() > 10000) {

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