How to use

copy

method

in

org.hibernate.engine.jdbc.StreamUtils

/**
 * Copy the inputStream to the outputStream.  Uses a buffer of the default size ({@link #DEFAULT_CHUNK_SIZE}).
 *
 * @param inputStream The input stream to read
 * @param outputStream The output stream to write to
 *
 * @return The number of bytes read
 *
 * @throws IOException If a problem occurred accessing either stream
 */
public static long copy(InputStream inputStream, OutputStream outputStream) throws IOException {
  return copy( inputStream, outputStream, DEFAULT_CHUNK_SIZE );
}

/**
 * Copy the reader to the writer.  Uses a buffer of the default size ({@link #DEFAULT_CHUNK_SIZE}).
 *
 * @param reader The reader to read from
 * @param writer The writer to write to
 *
 * @return The number of bytes read
 *
 * @throws IOException If a problem occurred accessing reader or writer
 */
public static long copy(Reader reader, Writer writer) throws IOException {
  return copy( reader, writer, DEFAULT_CHUNK_SIZE );
}

/**
 * Copy the inputStream to the outputStream.  Uses a buffer of the default size ({@link #DEFAULT_CHUNK_SIZE}).
 *
 * @param inputStream The input stream to read
 * @param outputStream The output stream to write to
 *
 * @return The number of bytes read
 *
 * @throws IOException If a problem occurred accessing either stream
 */
public static long copy(InputStream inputStream, OutputStream outputStream) throws IOException {
  return copy( inputStream, outputStream, DEFAULT_CHUNK_SIZE );
}

public static long copy(Reader reader, Writer writer) throws IOException {
  return copy( reader, writer, DEFAULT_CHUNK_SIZE );
}

/**
 * Copy the reader to the writer.  Uses a buffer of the default size ({@link #DEFAULT_CHUNK_SIZE}).
 *
 * @param reader The reader to read from
 * @param writer The writer to write to
 *
 * @return The number of bytes read
 *
 * @throws IOException If a problem occurred accessing reader or writer
 */
public static long copy(Reader reader, Writer writer) throws IOException {
  return copy( reader, writer, DEFAULT_CHUNK_SIZE );
}

public static long copy(InputStream inputStream, OutputStream outputStream) throws IOException {
  return copy( inputStream, outputStream, DEFAULT_CHUNK_SIZE );
}

public static long copy(InputStream inputStream, OutputStream outputStream) throws IOException {
  return copy( inputStream, outputStream, DEFAULT_CHUNK_SIZE );
}

public static long copy(Reader reader, Writer writer) throws IOException {
  return copy( reader, writer, DEFAULT_CHUNK_SIZE );
}

public Blob createBlob(InputStream inputStream) {
 try {
  ByteArrayOutputStream buffer = new ByteArrayOutputStream(inputStream.available());
  StreamUtils.copy(inputStream, buffer);
  return Hibernate.getLobCreator(getSession()).createBlob(buffer.toByteArray());
 } catch (Exception e) {
  throw new RuntimeException(e);
 }
}

/**
 * {@inheritDoc}
 */
public Blob createBlob(InputStream inputStream, long length) {
  try {
    Blob blob = createBlob();
    OutputStream byteStream = blob.setBinaryStream( 1 );
    StreamUtils.copy( inputStream, byteStream );
    byteStream.flush();
    byteStream.close();
    // todo : validate length written versus length given?
    return blob;
  }
  catch ( SQLException e ) {
    throw new JDBCException( "Unable to prepare BLOB binary stream for writing",e );
  }
  catch ( IOException e ) {
    throw new HibernateException( "Unable to write stream contents to BLOB", e );
  }
}

/**
 * {@inheritDoc}
 */
public Clob createClob(Reader reader, long length) {
  try {
    Clob clob = createClob();
    Writer writer = clob.setCharacterStream( 1 );
    StreamUtils.copy( reader, writer );
    writer.flush();
    writer.close();
    return clob;
  }
  catch ( SQLException e ) {
    throw new JDBCException( "Unable to prepare CLOB stream for writing", e );
  }
  catch ( IOException e ) {
    throw new HibernateException( "Unable to write CLOB stream content", e );
  }
}

/**
 * {@inheritDoc}
 */
public Clob createClob(Reader reader, long length) {
  try {
    Clob clob = createClob();
    Writer writer = clob.setCharacterStream( 1 );
    StreamUtils.copy( reader, writer );
    writer.flush();
    writer.close();
    return clob;
  }
  catch ( SQLException e ) {
    throw new JDBCException( "Unable to prepare CLOB stream for writing", e );
  }
  catch ( IOException e ) {
    throw new HibernateException( "Unable to write CLOB stream content", e );
  }
}

/**
 * {@inheritDoc}
 */
public NClob createNClob(Reader reader, long length) {
  try {
    NClob nclob = createNClob();
    Writer writer = nclob.setCharacterStream( 1 );
    StreamUtils.copy( reader, writer );
    writer.flush();
    writer.close();
    return nclob;
  }
  catch ( SQLException e ) {
    throw new JDBCException( "Unable to prepare NCLOB stream for writing", e );
  }
  catch ( IOException e ) {
    throw new HibernateException( "Unable to write NCLOB stream content", e );
  }
}

/**
 * {@inheritDoc}
 */
public NClob createNClob(Reader reader, long length) {
  try {
    NClob nclob = createNClob();
    Writer writer = nclob.setCharacterStream( 1 );
    StreamUtils.copy( reader, writer );
    writer.flush();
    writer.close();
    return nclob;
  }
  catch ( SQLException e ) {
    throw new JDBCException( "Unable to prepare NCLOB stream for writing", e );
  }
  catch ( IOException e ) {
    throw new HibernateException( "Unable to write NCLOB stream content", e );
  }
}

/**
 * {@inheritDoc}
 */
public Blob createBlob(InputStream inputStream, long length) {
  try {
    Blob blob = createBlob();
    OutputStream byteStream = blob.setBinaryStream( 1 );
    StreamUtils.copy( inputStream, byteStream );
    byteStream.flush();
    byteStream.close();
    // todo : validate length written versus length given?
    return blob;
  }
  catch ( SQLException e ) {
    throw new JDBCException( "Unable to prepare BLOB binary stream for writing",e );
  }
  catch ( IOException e ) {
    throw new HibernateException( "Unable to write stream contents to BLOB", e );
  }
}