How to use

readToByteChannel

method

in

ucar.nc2.iosp.IOServiceProvider

/**
 * Read data from a top level Variable and send data to a WritableByteChannel. Experimental.
 *
 * @param v       a top-level Variable
 * @param section the section of data to read.
 *                There must be a Range for each Dimension in the variable, in order.
 *                Note: no nulls allowed. IOSP may not modify.
 * @param wbc     write data to this WritableByteChannel
 * @return the number of bytes written to the channel
 * @throws java.io.IOException            if read error
 * @throws ucar.ma2.InvalidRangeException if invalid section
 */
protected long readToByteChannel(ucar.nc2.Variable v, Section section, WritableByteChannel wbc)
    throws java.io.IOException, ucar.ma2.InvalidRangeException {
 //if (unlocked)
 //  throw new IllegalStateException("File is unlocked - cannot use");
 if ((spi == null) || v.hasCachedData())
  return IospHelper.copyToByteChannel(v.read(section), wbc);
 return spi.readToByteChannel(v, section, wbc);
}

/**
 * Read data from a top level Variable and send data to a WritableByteChannel. Experimental.
 *
 * @param v       a top-level Variable
 * @param section the section of data to read.
 *                There must be a Range for each Dimension in the variable, in order.
 *                Note: no nulls allowed. IOSP may not modify.
 * @param wbc     write data to this WritableByteChannel
 * @return the number of bytes written to the channel
 * @throws java.io.IOException            if read error
 * @throws ucar.ma2.InvalidRangeException if invalid section
 */
protected long readToByteChannel(ucar.nc2.Variable v, Section section, WritableByteChannel wbc)
    throws java.io.IOException, ucar.ma2.InvalidRangeException {
 //if (unlocked)
 //  throw new IllegalStateException("File is unlocked - cannot use");
 if ((spi == null) || v.hasCachedData())
  return IospHelper.copyToByteChannel(v.read(section), wbc);
 return spi.readToByteChannel(v, section, wbc);
}

/**
 * Read data from a top level Variable and send data to a WritableByteChannel. Experimental.
 *
 * @param v       a top-level Variable
 * @param section the section of data to read.
 *                There must be a Range for each Dimension in the variable, in order.
 *                Note: no nulls allowed. IOSP may not modify.
 * @param wbc     write data to this WritableByteChannel
 * @return the number of bytes written to the channel
 * @throws java.io.IOException            if read error
 * @throws ucar.ma2.InvalidRangeException if invalid section
 */
protected long readToByteChannel(ucar.nc2.Variable v, Section section, WritableByteChannel wbc)
    throws java.io.IOException, ucar.ma2.InvalidRangeException {
 //if (unlocked)
 //  throw new IllegalStateException("File is unlocked - cannot use");
 if ((spi == null) || v.hasCachedData())
  return IospHelper.copyToByteChannel(v.read(section), wbc);
 return spi.readToByteChannel(v, section, wbc);
}