Example usage for java.nio ByteBuffer slice

Introduction

In this page you can find the example usage for java.nio ByteBuffer slice.

Prototype

public abstract ByteBuffer slice();

Source Link

Document

Returns a sliced buffer that shares its content with this buffer.

Usage

From source file:com.glaf.core.util.ByteBufferUtils.java

/**
 * buffer?/*from ww w  . j  a  v  a 2 s.co m*/
 * 
 * @param buffer
 * @return
 */
public static byte[] toArray(ByteBuffer buffer) {
    // ?heap buffer
    if (buffer.hasArray()) {
        byte[] array = buffer.array();
        int from = buffer.arrayOffset() + buffer.position();
        return Arrays.copyOfRange(array, from, from + buffer.remaining());
    }
    //  direct buffer
    else {
        byte[] to = new byte[buffer.remaining()];
        buffer.slice().get(to);
        return to;
    }
}

---

From source file:com.openteach.diamond.network.waverider.network.Packet.java

/**
 * ByteBuffer??/*w  w w.jav  a  2  s  .co m*/
 * @param buffer
 * @return
 */
public static Packet unmarshall(ByteBuffer buffer) {
    if (buffer.remaining() < getHeaderSize()) {
        throw new RuntimeException("Wrong packet.");
    }

    Packet packet = new Packet();
    byte[] str = new byte[NetWorkConstants.WAVERIDER_MAGIC.getBytes().length];
    buffer.get(str);
    packet.setMagic(new String(str));

    if (!NetWorkConstants.WAVERIDER_MAGIC.equals(packet.getMagic())) {
        throw new RuntimeException("Wrong packet.");
    }

    packet.setSequence(buffer.getLong());
    packet.setType(buffer.getLong());
    packet.setLength(buffer.getInt());
    packet.setPayLoad(buffer.slice());
    return packet;
}

---

From source file:com.spotify.heroic.metric.datastax.schema.legacy.MapSerializer.java

private <T> T next(ByteBuffer buffer, TypeSerializer<T> serializer) throws IOException {
    final short segment = buffer.getShort();
    final ByteBuffer slice = buffer.slice();
    slice.limit(segment);// ww w  .  j  a  v  a  2s .  c o  m
    final T value = serializer.deserialize(slice);

    buffer.position(buffer.position() + segment);
    return value;
}

---

From source file:org.apache.cassandra.db.marshal.UUIDType.java

public UUID compose(ByteBuffer bytes) {

    bytes = bytes.slice();
    if (bytes.remaining() < 16)
        return new UUID(0, 0);
    return new UUID(bytes.getLong(), bytes.getLong());
}

---

From source file:edu.tamu.tcat.crypto.spongycastle.SecureTokenImpl.java

@Override
public String getToken(ByteBuffer content) throws TokenException {
    try {//w ww.j a va  2 s  .c  o  m
        byte[] token = createToken(content.slice());
        byte[] iv = createIV();
        Cipher cipher = createCipher(Cipher.ENCRYPT_MODE, iv);
        int outputSize = cipher.getOutputSize(token.length);
        byte[] encrypted = new byte[outputSize + (ivSize / 8)];
        System.arraycopy(iv, 0, encrypted, 0, iv.length);
        cipher.doFinal(token, 0, token.length, encrypted, iv.length);
        String encoded = Base64.encodeBase64URLSafeString(encrypted);
        return encoded;
    } catch (NoSuchAlgorithmException e) {
        throw new TokenException("Missing algorithm", e);
    } catch (IllegalBlockSizeException e) {
        throw new TokenException(
                "Should never happen but is thrown because Sun/Oracle doesn't understand that encryption/decryption modes are different and should really have different APIs.  This is a decrypt only problem",
                e);
    } catch (BadPaddingException e) {
        throw new TokenException(
                "Should never happen but is thrown because Sun/Oracle doesn't understand that encryption/decryption modes are different and should really have different APIs.  This is a decrypt only problem",
                e);
    } catch (ShortBufferException e) {
        throw new TokenException("Should never happen", e);
    }
}

---

From source file:edu.tamu.tcat.crypto.bouncycastle.SecureTokenImpl.java

@Override
public String getToken(ByteBuffer content) throws TokenException {
    try {//from w ww.j  av a  2  s.  c o m
        byte[] token = createToken(content.slice());
        byte[] iv = createIV();
        Cipher cipher = createCipher(Cipher.ENCRYPT_MODE, iv);
        int outputSize = cipher.getOutputSize(token.length);
        // The token value returned contains the IV followed by the encrypted payload
        byte[] encrypted = new byte[outputSize + (ivSize / 8)];
        System.arraycopy(iv, 0, encrypted, 0, iv.length);
        cipher.doFinal(token, 0, token.length, encrypted, iv.length);
        String encoded = Base64.encodeBase64URLSafeString(encrypted);
        return encoded;
    } catch (NoSuchAlgorithmException e) {
        throw new TokenException("Missing algorithm", e);
    } catch (IllegalBlockSizeException e) {
        throw new TokenException(
                "Should never happen but is thrown because Sun/Oracle doesn't understand that encryption/decryption modes are different and should really have different APIs.  This is a decrypt only problem",
                e);
    } catch (BadPaddingException e) {
        throw new TokenException(
                "Should never happen but is thrown because Sun/Oracle doesn't understand that encryption/decryption modes are different and should really have different APIs.  This is a decrypt only problem",
                e);
    } catch (ShortBufferException e) {
        throw new TokenException("Should never happen", e);
    }
}

---

From source file:com.koda.integ.hbase.util.CacheableSerializer.java

@Override
public Cacheable read(ByteBuffer buf) throws IOException {
    if (deserializer == null || deserializer.get() == null) {
        return null;
    }/*from  w w  w  .j a  v  a 2s .  co m*/
    ByteBuffer bbuf = buf.slice();
    bbuf.order(buf.order());
    return deserializer.get().deserialize(bbuf);
}

---

From source file:com.mellanox.jxio.Msg.java

private ByteBuffer createSubBuffer(int position, int limit, ByteBuffer buf) {
    ByteBuffer sub;/*from   www. j ava2  s.  co  m*/
    buf.position(position);
    buf.limit(limit);
    sub = buf.slice();
    return sub;
}

---

From source file:org.apache.hadoop.hbase.io.hfile.slab.Slab.java

private void allocateAndSlice(int size, int sliceSize) {
    ByteBuffer newSlab = ByteBuffer.allocateDirect(size);
    slabs.add(newSlab);/*ww  w. ja  v a 2  s.c  o  m*/
    for (int j = 0; j < newSlab.capacity(); j += sliceSize) {
        newSlab.limit(j + sliceSize).position(j);
        ByteBuffer aSlice = newSlab.slice();
        buffers.add(aSlice);
        heapSize += ClassSize.estimateBase(aSlice.getClass(), false);
    }
}

---

From source file:org.apache.cassandra.db.marshal.TimeUUIDType.java

public void validate(ByteBuffer bytes) throws MarshalException {
    if (bytes.remaining() != 16 && bytes.remaining() != 0)
        throw new MarshalException(String.format("TimeUUID should be 16 or 0 bytes (%d)", bytes.remaining()));
    ByteBuffer slice = bytes.slice();
    // version is bits 4-7 of byte 6.
    if (bytes.remaining() > 0) {
        slice.position(6);/*from  w ww.j  ava2 s.  com*/
        if ((slice.get() & 0xf0) != 0x10)
            throw new MarshalException("Invalid version for TimeUUID type.");
    }
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• »