Examples of java.nio.ByteBuffer.array()

java.nio.ByteBuffer.array()
Returns the byte array which this buffer is based on, if there's one. @return The byte array which this buffer is based on @exception ReadOnlyBufferException If this buffer is based on a readonly array @exception UnsupportedOperationException If this buffer is not based on an array


  // convert char array to byte array, assuming UTF-8 encoding
  static protected byte[] convertCharToByteUTF(char[] from) {
    Charset c = Charset.forName("UTF-8");
    ByteBuffer output = c.encode(CharBuffer.wrap(from));
    return output.array();
  }


  //////////////////////////////////////////////////////////////////////////////////////
  // create new file

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  private Attribute readOpaqueAttValues(int grpid, int varid, String attname, int len, UserType userType) throws IOException {
    int total = len * userType.size;
    ByteBuffer bb = ByteBuffer.allocate(total);
    int ret = nc4.nc_get_att(grpid, varid, attname, bb);
    if (ret != 0) throw new IOException(nc4.nc_strerror(ret));
    return new Attribute(attname, Array.factory(DataType.BYTE, new int[] {total}, bb.array()));
  }


  /////////////////////////////////////////////////////////////////////////////


  private void makeVariables(int grpid, Group g) throws IOException {

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    int ret;


    ByteBuffer bb = ByteBuffer.allocate(len*size);
    ret = nc4.nc_get_var(grpid, varid, bb);
    if (ret != 0) throw new IOException(nc4.nc_strerror(ret));
    byte[] entire = bb.array();


    ArrayObject values = new ArrayObject(ByteBuffer.class, new int[]{len});
    int count = 0;
    IndexIterator ii = values.getIndexIterator();
    while (ii.hasNext()) {

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    if (ret != 0) throw new IOException(nc4.nc_strerror(ret));


    switch (baseType) {
      case NCLibrary.NC_BYTE:
      case NCLibrary.NC_UBYTE:
        return Array.factory( DataType.BYTE.getPrimitiveClassType(), shape, bb.array());


      case NCLibrary.NC_SHORT:
      case NCLibrary.NC_USHORT:
        ShortBuffer sb = bb.asShortBuffer();
        return Array.factory( DataType.BYTE.getPrimitiveClassType(), shape, sb.array());

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  private void writeString(String s, DataOutputStream dataOut)
    throws IOException
  {
    ByteBuffer byteBuf = charsetEncoder.encode(CharBuffer.wrap(s));
    dataOut.writeInt(byteBuf.remaining());
    dataOut.write(byteBuf.array(), 0, byteBuf.remaining());
  }


  private String readString(DataInputStream dataIn)
    throws IOException
  {

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          // heres a way to get a byte array for CRC from other values we need for duplicate checking
          ByteBuffer bb = ByteBuffer.allocate(12);
          bb.putInt( product.getDiscipline());
          bb.putLong( product.getRefTime());
          crc32.update(bb.array());


          long crcv = crc32.getValue();
          Integer recnum = pdsMap.get(crcv);
          // duplicate found
          if ( recnum != null) {

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          crc32.reset();
          crc32.update( rr.pdsData );
          ByteBuffer bb = ByteBuffer.allocate(12);
          bb.putInt( rr.discipline );
          bb.putLong( rr.refTime );
          crc32.update(bb.array());
          pdsMap.put( crc32.getValue(), i );
        }
        Calendar cal = Calendar.getInstance();
        // now check new records for duplicates, assumes original index has no duplicates
        for (int i = 0; i < products.size(); i++) {

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          crc32.reset();
          crc32.update(product.getPDS().getPdsVars().getPDSBytes());
          ByteBuffer bb = ByteBuffer.allocate(12);
          bb.putInt( product.getDiscipline());
          bb.putLong( product.getRefTime());
          crc32.update(bb.array());


          long crcv = crc32.getValue();
          Integer recnum = pdsMap.get(crcv);
          // duplicate found
          if ( recnum != null) {

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          Grib1Product product = products.get( i );
          crc32.reset();
          crc32.update(product.getPDS().getPdsVars().getPDSBytes());
          ByteBuffer bb = ByteBuffer.allocate(8);
          bb.putLong( product.getPDS().getPdsVars().getReferenceTime());
          crc32.update(bb.array());


          long crcv = crc32.getValue();
          Integer recnum = pdsMap.get(crcv);
          // duplicate found
          if ( recnum != null ) {

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          Grib2WriteIndex.RawRecord rr = recordList.get( i );
          crc32.reset();
          crc32.update( rr.pdsData );
          ByteBuffer bb = ByteBuffer.allocate(8);
          bb.putLong( rr.refTime );
          crc32.update(bb.array());
          pdsMap.put( crc32.getValue(), i );
        }
        // now check new records for duplicates, assumes original index has no duplicates
        for (int i = 0; i < products.size(); i++) {
          Grib1Product product = products.get( i );

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