Examples of java.nio.ByteBuffer.arrayOffset()

java.nio.ByteBuffer.arrayOffset()
Returns the offset of the byte array which this buffer is based on, if there's one.
The offset is the index of the array corresponds to the zero position of the buffer.
@return The offset of 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

          return b;
        }
        // Check key.
        ByteBuffer k = this.delegate.getKey();
        return this.delegate.getReader().getComparator().
          compare(k.array(), k.arrayOffset(), k.limit(),
            splitkey, 0, splitkey.length) < 0;
      }


      public int seekTo(byte[] key) throws IOException {
        return seekTo(key, 0, key.length);

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      while ((!topScanner.isSeeked() && topScanner.seekTo()) ||
          (topScanner.isSeeked() && topScanner.next())) {
        key = topScanner.getKey();


        if (topScanner.getReader().getComparator().compare(key.array(),
          key.arrayOffset(), key.limit(), midkey, 0, midkey.length) < 0) {
          fail("key=" + Bytes.toStringBinary(key) + " < midkey=" +
              Bytes.toStringBinary(midkey));
        }
        if (first) {
          first = false;

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      topScanner = top.getScanner(false, false);
      while ((!topScanner.isSeeked() && topScanner.seekTo()) ||
          topScanner.next()) {
        key = topScanner.getKey();
        assertTrue(topScanner.getReader().getComparator().compare(key.array(),
          key.arrayOffset(), key.limit(), badmidkey, 0, badmidkey.length) >= 0);
        if (first) {
          first = false;
          KeyValue keyKV = KeyValue.createKeyValueFromKey(key);
          LOG.info("First top when key < bottom: " + keyKV);
          String tmp = Bytes.toString(keyKV.getRow());

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      int i = 0;
      do {
        KeyValue expectedKeyValue = sampleKv.get(i);
        ByteBuffer keyValue = seeker.getKeyValueBuffer();
        if (0 != Bytes.compareTo(
            keyValue.array(), keyValue.arrayOffset(), keyValue.limit(),
            expectedKeyValue.getBuffer(), expectedKeyValue.getOffset(),
            expectedKeyValue.getLength())) {


          int commonPrefix = 0;
          byte[] left = keyValue.array();

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            expectedKeyValue.getLength())) {


          int commonPrefix = 0;
          byte[] left = keyValue.array();
          byte[] right = expectedKeyValue.getBuffer();
          int leftOff = keyValue.arrayOffset();
          int rightOff = expectedKeyValue.getOffset();
          int length = Math.min(keyValue.limit(), expectedKeyValue.getLength());
          while (commonPrefix < length &&
              left[commonPrefix + leftOff] == right[commonPrefix + rightOff]) {
            commonPrefix++;

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      ByteBuffer encodedBuffer = ByteBuffer.wrap(baos.toByteArray());
      ByteBuffer keyBuffer = encoder.getFirstKeyInBlock(encodedBuffer);
      KeyValue firstKv = sampleKv.get(0);
      if (0 != Bytes.compareTo(
          keyBuffer.array(), keyBuffer.arrayOffset(), keyBuffer.limit(),
          firstKv.getBuffer(), firstKv.getKeyOffset(),
          firstKv.getKeyLength())) {


        int commonPrefix = 0;
        int length = Math.min(keyBuffer.limit(), firstKv.getKeyLength());

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          firstKv.getKeyLength())) {


        int commonPrefix = 0;
        int length = Math.min(keyBuffer.limit(), firstKv.getKeyLength());
        while (commonPrefix < length &&
            keyBuffer.array()[keyBuffer.arrayOffset() + commonPrefix] ==
            firstKv.getBuffer()[firstKv.getKeyOffset() + commonPrefix]) {
          commonPrefix++;
        }
        fail(String.format("Bug in '%s' commonPrefix %d",
            encoder.toString(), commonPrefix));

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              ByteBuffer bufRead = b.getBufferWithHeader();
              ByteBuffer bufExpected = expectedContents.get(i);
              boolean bytesAreCorrect = Bytes.compareTo(bufRead.array(),
                  bufRead.arrayOffset(), 
                  bufRead.limit() - b.totalChecksumBytes(),
                  bufExpected.array(), bufExpected.arrayOffset(),
                  bufExpected.limit()) == 0;
              String wrongBytesMsg = "";


              if (!bytesAreCorrect) {
                // Optimization: only construct an error message in case we

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                // will need it.
                wrongBytesMsg = "Expected bytes in block #" + i + " (algo="
                    + algo + ", pread=" + pread
                    + ", cacheOnWrite=" + cacheOnWrite + "):\n";
                wrongBytesMsg += Bytes.toStringBinary(bufExpected.array(),
                    bufExpected.arrayOffset(), Math.min(32,
                        bufExpected.limit()))
                    + ", actual:\n"
                    + Bytes.toStringBinary(bufRead.array(),
                        bufRead.arrayOffset(), Math.min(32, bufRead.limit()));
                if (detailedLogging) {

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                           HFileBlock.toStringHeader(bufExpected) +
                           "\nfound    header" + 
                           HFileBlock.toStringHeader(bufRead));
                  LOG.warn("bufread offset " + bufRead.arrayOffset() +
                           " limit " + bufRead.limit() +
                           " expected offset " + bufExpected.arrayOffset() +
                           " limit " + bufExpected.limit());
                  LOG.warn(wrongBytesMsg);
                }
              }
              assertTrue(wrongBytesMsg, bytesAreCorrect);

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