How to use

closeReadStream

method

in

org.deegree.coverage.raster.io.grid.GridFileReader

public void dispose() {
  leaveStreamOpen( false );
  try {
    closeReadStream();
  } catch ( IOException e ) {
    if ( LOG.isDebugEnabled() ) {
      LOG.debug( "(Stack) Exception occurred: " + e.getLocalizedMessage(), e );
    } else {
      LOG.error( "Exception occurred: " + e.getLocalizedMessage() );
    }
  }
}

@Override
protected void read( int columnId, int rowId, ByteBuffer buffer )
            throws IOException {
  int tileId = getTileId( columnId, rowId );
  long begin = System.currentTimeMillis();
  int tileInBlob = tileId % getTilesPerBlob();
  // transfer the data from the blob
  try {
    synchronized ( LOCK ) {
      FileChannel channel = getFileChannel();
      // MappedByteBuffer map = channel.map( MapMode.READ_ONLY, tileInBlob * getBytesPerTile(),
      // buffer.remaining() );
      // buffer.put( map );
      // map.
      // LOG.debug( "Tile id: {} -> pos in blob: {}", tileId, +tileInBlob );
      channel.position( tileInBlob * getBytesPerTile() );
      channel.read( buffer );
      closeReadStream();
    }
    // rewinding is not an option, buffer.rewind();
  } catch ( IOException e ) {
    LOG.error( "Error reading tile data from blob: " + e.getMessage(), e );
  }
  long elapsed = System.currentTimeMillis() - begin;
  if ( LOG.isDebugEnabled() ) {
    LOG.debug( "Loading of tile ({}x{}) in {} ms.", new Object[] { infoFile.getTileRasterWidth(),
                                   infoFile.getTileRasterHeight(), elapsed } );
  }
}

@Override
public BufferResult read( RasterRect rect, ByteBuffer resultBuffer )
            throws IOException {
  BufferResult res = null;
  RasterRect fRect = snapToGrid( rect );
  if ( fRect != null ) {
    int[] minCRmaxCR = getIntersectingTiles( fRect );
    if ( minCRmaxCR == null ) {
      return null;
    }
    int size = fRect.width * fRect.height * sampleSize;
    if ( resultBuffer == null ) {
      resultBuffer = ByteBufferPool.allocate( size, false );
    }
    synchronized ( LOCK ) {
      FileChannel channel = getFileChannel();
      RasterRect tmpRect = new RasterRect( 0, 0, fRect.width, fRect.height );
      for ( int col = minCRmaxCR[0]; col <= minCRmaxCR[2]; ++col ) {
        for ( int row = minCRmaxCR[1]; row <= minCRmaxCR[3]; ++row ) {
          readValuesFromTile( col, row, fRect, channel, resultBuffer );
        }
      }
      res = new BufferResult( tmpRect, resultBuffer );
      closeReadStream();
    }
  }
  return res;
}