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

Class org.apache.lucene.index.IndexReader

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

org.apache.lucene.index.IndexReader.deleteDocuments()
Deletes all documents that have a given term indexed. This is useful if one uses a document field to hold a unique ID string for the document. Then to delete such a document, one merely constructs a term with the appropriate field and the unique ID string as its text and passes it to this method. See {@link #deleteDocument(int)} for information about when this deletion will become effective. @return the number of documents deleted @throws StaleReaderException if the index has changedsince this reader was opened @throws CorruptIndexException if the index is corrupt @throws LockObtainFailedException if another writerhas this index open (write.lock could not be obtained) @throws IOException if there is a low-level IO error


    // remove deleted documents
    IndexReader indexDeleter = index.indexReaderFactory();
    if (unflushedDeletions.size() > 0) {
      for (Term term : unflushedDeletions) {
        indexDeleter.deleteDocuments(term);
      }
      unflushedDeletions.clear();
    }

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        //--------------------------------------------------------------------


        // deleting the document just added, this will cause a different exception to take place
        Term term = new Term("id", "doc1");
        IndexReader readerB = IndexReader.open(indexStoreB, false);
        readerB.deleteDocuments(term);
        readerB.close();


        // optimizing the index with the writer
        writerB = new IndexWriter(indexStoreB, new StandardAnalyzer(TEST_VERSION_CURRENT), false, IndexWriter.MaxFieldLength.LIMITED);
        writerB.optimize();

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        //--------------------------------------------------------------------


        // deleting the document just added, this will cause a different exception to take place
        Term term = new Term("id", "doc1");
        IndexReader readerB = IndexReader.open(indexStoreB, false);
        readerB.deleteDocuments(term);
        readerB.close();


        // optimizing the index with the writer
        writerB = new IndexWriter(indexStoreB, new IndexWriterConfig(
            TEST_VERSION_CURRENT,

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    IndexReader ir = searcher.getReader();
    TermDocs tdocs = null;
    int num=0;
    try {
      Term term = new Term(idField.getName(), indexedId);
      num = ir.deleteDocuments(term);
      if (SolrCore.log.isLoggable(Level.FINEST)) {
        SolrCore.log.finest("deleted " + num + " docs matching id " + idFieldType.indexedToReadable(indexedId));
      }
    } finally {
      try { if (tdocs != null) tdocs.close(); } catch (Exception e) {}

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                if (parsedObject.getKey() != null)
                {
                    term = new Term(ParsedObject.FIELDNAME_KEY, parsedObject.getKey());
                    // Remove the document from search index
                    deleteCount += indexReader.deleteDocuments(term);
                    //logger.info("Attempted to delete '" + term.toString() + "' from index, documents deleted = " + rc);
                    //System.out.println("Attempted to delete '" + term.toString() + "' from index, documents deleted = " + rc);
                }
            }

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    // remove deleted documents
    IndexReader indexDeleter = index.indexReaderFactory();
    if (unflushedDeletions.size() > 0) {
      for (Term term : unflushedDeletions) {
        indexDeleter.deleteDocuments(term);
      }
      unflushedDeletions.clear();
    }

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