Examples of java.nio.ByteBuffer.slice()

java.nio.ByteBuffer.slice()
Returns a sliced buffer that shares content with this buffer.
The sliced buffer's capacity will be this buffer's remaining(), and its zero position will correspond to this buffer's current position. The new buffer's position will be 0, limit will be its capacity, and its mark is unset. The new buffer's readonly property and byte order are same as this buffer.

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


    public void objectToEntry(Object object, TupleOutput tupleOutput)
    {
        ByteBuffer src = (ByteBuffer) object;
        
        src = src.slice();


        byte[] chunkData = new byte[src.limit()];
        src.duplicate().get(chunkData);


        tupleOutput.writeInt(chunkData.length);

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  private BBTreeNode(ByteBuffer buffer, int pointer) {
      freeSpace = buffer;
      ByteBuffer r = buffer.duplicate();
      r.position(pointer);
      record = r.slice();
  }


    @Override
    public TreeNode parent() {
        int p = record.getInt(0);

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      try {
        bb.position(0);
        bb.limit(bb.capacity());
        bb.position(offset);
        bb.limit(offset + pageSize);
        bb = bb.slice();
      }
      catch(IllegalArgumentException e) {
        e.printStackTrace();
        throw e;
      }

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                case Leader.REQUEST:                    
                    bb = ByteBuffer.wrap(qp.getData());
                    sessionId = bb.getLong();
                    cxid = bb.getInt();
                    type = bb.getInt();
                    bb = bb.slice();
                    Request si;
                    if(type == OpCode.sync){
                        si = new LearnerSyncRequest(this, sessionId, cxid, type, bb, qp.getAuthinfo());
                    } else {
                        si = new Request(null, sessionId, cxid, type, bb, qp.getAuthinfo());

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    }


    public static final ByteBuffer slice(ByteBuffer buf, int offset) {
        ByteBuffer tmp = buf.duplicate();
        tmp.position((int) offset);
        return tmp.slice();
    }


    public static final void checkBounds(Ruby runtime, long size, long off, long len) {
        if ((off | len | (off + len) | (size - (off + len))) < 0) {
            throw runtime.newIndexError("Memory access offset="

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            {
                dp.setTimestamp(System.currentTimeMillis());
            }


            ssn.messageTransfer("amq.direct", MessageAcceptMode.NONE, MessageAcquireMode.PRE_ACQUIRED,
                                new Header(dp, mp), body.slice());
            count++;
        }


        ssn.messageCancel("echo-queue");

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        }
        else
        {
            ByteBuffer tmp = ByteBuffer.allocate(l + pos + 3);
            tmp.position(3);
            bb = tmp.slice(); // make bb have a non null arrayOffset
        }
        bb.position(pos);
        bb.mark();
        bb.put(s.getBytes());
        bb.reset();

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            if (encoding != DataBlockEncoding.NONE) {
              // We expect a two-byte big-endian encoding id.
              assertEquals(0, actualBuffer.get(0));
              assertEquals(encoding.getId(), actualBuffer.get(1));
              actualBuffer.position(2);
              actualBuffer = actualBuffer.slice();
            }


            ByteBuffer expectedBuffer = encodedBlocks.get(blockId);
            expectedBuffer.rewind();

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            if (encoding != DataBlockEncoding.NONE) {
              // We expect a two-byte big-endian encoding id.
              assertEquals(0, actualBuffer.get(0));
              assertEquals(encoding.getId(), actualBuffer.get(1));
              actualBuffer.position(2);
              actualBuffer = actualBuffer.slice();
            }


            ByteBuffer expectedBuffer = encodedBlocks.get(blockId);
            expectedBuffer.rewind();

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      }


      // TODO: Could this be done with one ByteBuffer rather than create two?
      ByteBuffer valueBuff = blockBuffer.slice();
      valueBuff.position(currKeyLen);
      valueBuff = valueBuff.slice();
      valueBuff.limit(currValueLen);
      valueBuff.rewind();
      return valueBuff;
    }

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