Examples of org.springmodules.lucene.index.LuceneIndexAccessException

org.springmodules.lucene.index.LuceneIndexAccessException
Root of the hierarchy of Lucene index access exceptions. It extends the Lucene exception.
This exception hierarchy aims to let user code find and handle the kind of error encountered without knowing the details of the particular index access API in use.
As this class is a runtime exception, there is no need for user code to catch it or subclasses if any error is to be considered fatal (the usual case). @author Thierry Templier

   * Check if the directory is specified for the factory. If not, the
   * method will throw a LuceneIndexAccessException exception
   */
  private void checkDirectory() {
    if( getDirectory()==null ) {
      throw new LuceneIndexAccessException("The directory is not specified");
    }
  }

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    boolean locked = IndexReader.isLocked(getDirectory());
    if( locked ) {
      if( resolveLock ) {
        IndexReader.unlock(getDirectory());
      } else {
        throw new LuceneIndexAccessException("The index is locked");
      }
    }
  }

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  private void createIndex() {
    IndexWriter indexWriter = null;
    try {
      indexWriter = new IndexWriter(getDirectory(), getAnalyzer(), true);
    } catch(Exception ex) {
      throw new LuceneIndexAccessException("Error during creating a non existent index", ex);
    } finally {
      try {
        if( indexWriter!=null ) {
          indexWriter.close();
        }
      } catch (IOException ex) {
        throw new LuceneIndexAccessException("Error during closing the writer", ex);
      }
    }
  }

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        return new SimpleLuceneIndexReader(IndexReader.open(getDirectory()));
      } else if( !exist && create ) {
        createIndex();
        return new SimpleLuceneIndexReader(IndexReader.open(getDirectory()));
      } else {
        throw new LuceneIndexAccessException("The index doesn't exist for the specified directory");
      }
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during opening the reader", ex);
    }
  }

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      checkDirectory();
      checkIndexLocking();


      boolean exists = IndexReader.indexExists(getDirectory());
      if( !exists && !create ) {
          throw new LuceneIndexAccessException("The index doesn't exist for the specified directory. "+
                  "To allow the creation of the index, set the create property to true.");
      }


      IndexWriter writer = new IndexWriter(getDirectory(), getAnalyzer(), !exists);
      setIndexWriterParameters(writer);
      return new SimpleLuceneIndexWriter(writer);
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during creating the writer",ex);
    }
  }

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  public void deleteDocument(int internalDocumentId) {
    LuceneIndexReader reader = IndexReaderFactoryUtils.getIndexReader(indexFactory);
    try {
      reader.deleteDocument(internalDocumentId);
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during deleting a document.",ex);
    } finally {
      IndexReaderFactoryUtils.releaseIndexReader(indexFactory,reader);
    }
  }

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    LuceneIndexReader reader = IndexReaderFactoryUtils.getIndexReader(indexFactory);
    System.out.println("> reader = "+reader);
    try {
      reader.deleteDocuments(term);
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during deleting a document.",ex);
    } finally {
      IndexReaderFactoryUtils.releaseIndexReader(indexFactory,reader);
    }
  }

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  public void undeleteDocuments() {
    LuceneIndexReader reader = IndexReaderFactoryUtils.getIndexReader(indexFactory);
    try {
      reader.undeleteAll();
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during undeleting all documents.",ex);
    } finally {
      IndexReaderFactoryUtils.releaseIndexReader(indexFactory,reader);
    }
  }

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  protected Document createDocument(DocumentCreator documentCreator) {
    try {
      return documentCreator.createDocument();
    } catch (Exception ex) {
      throw new LuceneIndexAccessException("Construction of the desired Document failed", ex);
    }
  }

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  protected List createDocuments(DocumentsCreator documentsCreator) {
    try {
      return documentsCreator.createDocuments();
    } catch (Exception ex) {
      throw new LuceneIndexAccessException("Construction of the desired Document failed", ex);
    }
  }

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