Example usage for java.nio ByteBuffer get

Introduction

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

Prototype

public abstract byte get(int index);

Source Link

Document

Returns the byte at the specified index and does not change the position.

Usage

From source file:io.mycat.util.ByteBufferUtil.java

/**
 * Compare two ByteBuffer at specified offsets for length.
 * Compares the non equal bytes as unsigned.
 * @param bytes1 First byte buffer to compare.
 * @param offset1 Position to start the comparison at in the first array.
 * @param bytes2 Second byte buffer to compare.
 * @param offset2 Position to start the comparison at in the second array.
 * @param length How many bytes to compare?
 * @return -1 if byte1 is less than byte2, 1 if byte2 is less than byte1 or 0 if equal.
 *///  w w w.  j  av  a2s .c  o  m
public static int compareSubArrays(ByteBuffer bytes1, int offset1, ByteBuffer bytes2, int offset2, int length) {
    if (bytes1 == null) {
        return bytes2 == null ? 0 : -1;
    }
    if (bytes2 == null) {
        return 1;
    }

    assert bytes1.limit() >= offset1
            + length : "The first byte array isn't long enough for the specified offset and length.";
    assert bytes2.limit() >= offset2
            + length : "The second byte array isn't long enough for the specified offset and length.";
    for (int i = 0; i < length; i++) {
        byte byte1 = bytes1.get(offset1 + i);
        byte byte2 = bytes2.get(offset2 + i);
        //            if (byte1 == byte2)
        //                continue;
        // compare non-equal bytes as unsigned
        if (byte1 != byte2) {
            return (byte1 & 0xFF) < (byte2 & 0xFF) ? -1 : 1;
        }
    }
    return 0;
}

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

/**
 * Transfer bytes from one ByteBuffer to another. This function acts as
 * System.arrayCopy() but for ByteBuffers.
 * /*from ww  w .  j a va  2  s  .  c om*/
 * @param src
 *            the source ByteBuffer
 * @param srcPos
 *            starting position in the source ByteBuffer
 * @param dst
 *            the destination ByteBuffer
 * @param dstPos
 *            starting position in the destination ByteBuffer
 * @param length
 *            the number of bytes to copy
 */
public static void arrayCopy(ByteBuffer src, int srcPos, ByteBuffer dst, int dstPos, int length) {
    if (src.hasArray() && dst.hasArray()) {
        System.arraycopy(src.array(), src.arrayOffset() + srcPos, dst.array(), dst.arrayOffset() + dstPos,
                length);
    } else {
        if (src.limit() - srcPos < length || dst.limit() - dstPos < length)
            throw new IndexOutOfBoundsException();

        for (int i = 0; i < length; i++)

            dst.put(dstPos++, src.get(srcPos++));
    }
}

From source file:com.ah.ui.actions.home.clientManagement.service.CertificateGenSV.java

@SuppressWarnings("resource")
public static byte[] readFromFile(File file) throws IOException {
    FileChannel fileChannel = new FileInputStream(file).getChannel();
    ByteBuffer bb = ByteBuffer.allocate((int) fileChannel.size());
    fileChannel.read(bb);/*from www.  j  a v a  2 s.c o  m*/
    fileChannel.close();
    bb.flip();
    byte[] bytes;

    if (bb.hasArray()) {
        bytes = bb.array();
    } else {
        bytes = new byte[bb.limit()];
        bb.get(bytes);
    }

    return bytes;
}

From source file:com.FalcoLabs.Fido.api.datastore.serializers.BinarySerializer.java

@SuppressWarnings("unchecked")
public T fromByteBuffer(ByteBuffer byteBuffer) {
    byte[] bytes = new byte[byteBuffer.remaining()];
    byteBuffer.get(bytes);
    Object obj = SerializationUtils.deserialize(bytes);
    return (T) obj;
}

From source file:com.eventsourcing.layout.binary.ByteArrayBinaryDeserializer.java

@Override
public Object deserialize(ByteArrayTypeHandler typeHandler, ByteBuffer buffer) {
    int len = buffer.getInt();
    byte[] bytes = new byte[len];
    buffer.get(bytes);
    if (typeHandler.isPrimitive()) {
        return bytes;
    } else {//ww w  .ja va2  s  .c o m
        return toObject(bytes);
    }
}

From source file:de.ailis.usb4java.descriptors.SimpleUsbStringDescriptor.java

/**
 * Constructs a new string descriptor by reading the descriptor data
 * from the specified byte buffer./*w  w  w .  ja v a  2s.c o m*/
 * 
 * @param data
 *            The descriptor data as a byte buffer.
 */
public SimpleUsbStringDescriptor(final ByteBuffer data) {
    super(data.get(0), data.get(1));

    data.position(2);
    this.bString = new byte[bLength() - 2];
    data.get(this.bString);
}

From source file:org.elasticsoftware.elasticactors.base.serialization.JacksonMessageDeserializer.java

@Override
public T deserialize(ByteBuffer serializedObject) throws IOException {
    byte[] buf = new byte[serializedObject.remaining()];
    serializedObject.get(buf);
    return objectMapper.readValue(buf, objectClass);
}

From source file:com.gumgum.kafka.consumer.KafkaTemplate.java

private String convertToUtf8String(ByteBuffer buffer) throws Exception {
    byte[] bytes = new byte[buffer.remaining()];
    buffer.get(bytes);
    return new String(bytes, "UTF-8");
}

From source file:ByteString.java

public void retrieve(ByteBuffer bb) {
    short n = bb.getShort();
    if (n > 0) {
        bytes = new byte[n];
        bb.get(bytes);
    } else {/*from   w  w  w.j  av a 2s. c  om*/
        bytes = null;
    }
}

From source file:de.rwhq.serializer.FixedStringSerializer.java

@Override
public String deserialize(final byte[] o) {
    final ByteBuffer buf = ByteBuffer.wrap(o);
    final short length = buf.getShort();

    final byte[] bytes = new byte[length];
    buf.get(bytes);
    return new String(bytes);
}