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

  // Methods dealing with document updates
  //-------------------------------------------------------------------------


  private void checkHitsForUpdate(Hits hits) {
    if( hits.length()==0 ) {
      throw new LuceneIndexAccessException("The identifier returns no document.");
    }
    if( hits.length()>1 ) {
      throw new LuceneIndexAccessException("The identifier returns more than one document.");
    }
  }

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    try {
      Hits hits=searcher.search(new TermQuery(identifierTerm));
      checkHitsForUpdate(hits);
      updatedDocument=documentModifier.updateDocument(hits.doc(0));
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during updating a document.",ex);
    } finally {
      SearcherFactoryUtils.releaseSearcher(searcher);
      IndexReaderFactoryUtils.releaseIndexReader(indexFactory,reader);
    }

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    List updatedDocuments=null;
    try {
      Hits hits=searcher.search(new TermQuery(identifierTerm));
      updatedDocuments=documentsModifier.updateDocuments(hits);
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during updating a document.",ex);
    } finally {
      SearcherFactoryUtils.releaseSearcher(searcher);
      IndexReaderFactoryUtils.releaseIndexReader(indexFactory,reader);
    }

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  public void addIndexes(Directory[] directories) {
    IndexWriter writer=IndexWriterFactoryUtils.getIndexWriter(indexFactory);
    try {
      writer.addIndexes(directories);
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during adding indexes.",ex);
    } finally {
      IndexWriterFactoryUtils.releaseIndexWriter(indexFactory,writer);
    }
  }

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  public void optimize() {
    IndexWriter writer=IndexWriterFactoryUtils.getIndexWriter(indexFactory);
    try {
      writer.optimize();
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during optimize the index.",ex);
    } finally {
      IndexWriterFactoryUtils.releaseIndexWriter(indexFactory,writer);
    }
  }

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  public Object read(ReaderCallback callback) {
    IndexReader reader=IndexReaderFactoryUtils.getIndexReader(indexFactory);
    try {
      return callback.doWithReader(reader);
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during using the IndexReader.",ex);
    } finally {
      IndexReaderFactoryUtils.releaseIndexReader(indexFactory,reader);
    }
  }

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  public Object write(WriterCallback callback) {
    IndexWriter writer=IndexWriterFactoryUtils.getIndexWriter(indexFactory);
    try {
      return callback.doWithWriter(writer);
    } catch(IOException ex) {
      throw new LuceneIndexAccessException("Error during using the IndexWriter.",ex);
    } finally {
      IndexWriterFactoryUtils.releaseIndexWriter(indexFactory,writer);
    }
  }

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      if( optimizeIndex ) {
        writer.optimize();
      }
    } catch(IOException ex) {
      logger.error("Error during indexing the directory : "+dirToParse, ex);
      throw new LuceneIndexAccessException("Error during indexing the directory : "+dirToParse, ex);
    } catch(Exception ex) {
      ex.printStackTrace();
    } finally {
      IndexWriterFactoryUtils.releaseIndexWriter(getIndexFactory(), writer);
    }

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        writer.optimize();
      }
    } catch(Exception ex) {
      ex.printStackTrace();
      logger.error("Error during indexing the datasource", ex);
      throw new LuceneIndexAccessException("Error during indexing the datasource", ex);
    } catch(Throwable t) {
      t.printStackTrace();
    } finally {
      IndexWriterFactoryUtils.releaseIndexWriter(getIndexFactory(), writer);
    }

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   */
  public static LuceneIndexReader getIndexReader(IndexFactory indexFactory, boolean transaction) {
    try {
      return doGetIndexReader(indexFactory, transaction);
    } catch (IOException ex) {
      throw new LuceneIndexAccessException("Could not get Lucene reader", ex);
    }
  }

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