Examples of java.nio.ByteBuffer.asReadOnlyBuffer()

java.nio.ByteBuffer.asReadOnlyBuffer()
Returns a readonly buffer that shares content with this buffer.
The returned buffer is guaranteed to be a new instance, even this buffer is readonly itself. The new buffer's position, limit, capacity and mark are the same as this buffer.

The new buffer shares content with this buffer, which means this buffer's change of content will be visible to the new buffer. The two buffer's position, limit and mark are independent.
@return A readonly version of this buffer.

   * Constructs a new read-only {@code java.nio.ByteBuffer} with the
   * same backing byte array.
   */
  public ByteBuffer asReadOnlyByteBuffer() {
    final ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);
    return byteBuffer.asReadOnlyBuffer();
  }


  /**
   * Constructs a new {@code String} by decoding the bytes using the
   * specified charset.

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  @Override
  public ByteBuffer asReadOnlyByteBuffer() {
    ByteBuffer byteBuffer =
        ByteBuffer.wrap(bytes, getOffsetIntoBytes(), size());
    return byteBuffer.asReadOnlyBuffer();
  }


  @Override
  public List<ByteBuffer> asReadOnlyByteBufferList() {
    // Return the ByteBuffer generated by asReadOnlyByteBuffer() as a singleton

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  }


  @Override
  public ByteBuffer asReadOnlyByteBuffer() {
    ByteBuffer byteBuffer = ByteBuffer.wrap(toByteArray());
    return byteBuffer.asReadOnlyBuffer();
  }


  @Override
  public List<ByteBuffer> asReadOnlyByteBufferList() {
    // Walk through the list of LiteralByteString's that make up this

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    public void test_read_LByteBuffer_readOnlyBuf() throws Exception {
        // regression test for Harmony-754
        ByteBuffer c = ByteBuffer.allocate(1);
        DatagramChannel channel = DatagramChannel.open();
        try{
            channel.read(c.asReadOnlyBuffer());
            fail("Should throw NotYetConnectedException");
        } catch (NotYetConnectedException e){
            // expected
        }
        channel.connect(localAddr1);

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        } catch (NotYetConnectedException e){
            // expected
        }
        channel.connect(localAddr1);
        try{
            channel.read(c.asReadOnlyBuffer());
            fail("Should throw IllegalArgumentException");
        } catch (IllegalArgumentException e){
            // expected
        }
    }

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        for (int n = 0, ii = esi; n < numSymbols; n++, ii++) {
            symbols.put(getSourceSymbol(ii).transportData());
        }
        symbols.flip();


        return EncodingPacket.newSourcePacket(sbn, esi, symbols.asReadOnlyBuffer(), numSymbols);
    }


    @Override
    public EncodingPacket repairPacket(int esi) {

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        for (int i = 0; i < numSymbols; i++) {
            symbols.put(getRepairSymbol(esi + i).readOnlyData());
        }
        symbols.flip();


        return EncodingPacket.newRepairPacket(sbn, esi, symbols.asReadOnlyBuffer(), numSymbols);
    }


    @Override
    public IterableBuilder newIterableBuilder() {

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      buffer.put(intAsBytes, intAsBytes.length - numBytes, numBytes);
      ++i;
    }
    buffer.position(0);


    return new VSizeIndexedInts(buffer.asReadOnlyBuffer(), numBytes);
  }


  public static byte getNumBytesForMax(int maxValue)
  {
    if (maxValue < 0) {

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        ByteBuffer ret = b.slice();
        ret.limit(PAGE_SIZE);
        if(!transactionsDisabled||readonly){
            // changes written into buffer will be directly written into file
            // so we need to protect buffer from modifications
            ret = ret.asReadOnlyBuffer();
        }
        return ret;
    }


    public void forceClose() throws IOException {

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            //out of bounds, so just return empty data
            return ByteBuffer.wrap(PageFile.CLEAN_DATA).asReadOnlyBuffer();
        }else{
            ByteBuffer b = ByteBuffer.wrap(data);
            if(!transactionsDisabled)
                return b.asReadOnlyBuffer();
            else
                return b;
        }

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