Example usage for org.apache.commons.lang ArrayUtils EMPTY_BYTE

Introduction

In this page you can find the example usage for org.apache.commons.lang ArrayUtils EMPTY_BYTE_ARRAY.

Prototype

null EMPTY_BYTE_ARRAY

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An empty immutable byte array.

Usage

From source file:com.google.step2.util.EncodingUtil.java

public static byte[] getUtf8Bytes(String s) {
    if (s == null) {
        return ArrayUtils.EMPTY_BYTE_ARRAY;
    }/*  w  ww  .j  a v a  2 s .  co m*/
    ByteBuffer bb = UTF8.encode(s);
    return ArrayUtils.subarray(bb.array(), 0, bb.limit());
}

From source file:com.bigdata.dastor.db.filter.IdentityQueryFilter.java

/**
 * Only for use in testing; will read entire CF into memory.
 */// www  .ja  v  a2  s. co  m
public IdentityQueryFilter(String key, QueryPath path) {
    super(key, path, ArrayUtils.EMPTY_BYTE_ARRAY, ArrayUtils.EMPTY_BYTE_ARRAY, false, Integer.MAX_VALUE);
}

From source file:net.sf.beanlib.utils.BlobUtils.java

public byte[] toByteArray(Blob fromBlob, int bufferSize) {
    if (fromBlob == null)
        return ArrayUtils.EMPTY_BYTE_ARRAY;
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    try {/*  w  ww . j a  v a 2s. com*/
        return toByteArrayImpl(fromBlob, baos, bufferSize);
    } catch (SQLException e) {
        log.error("", e);
        throw new BeanlibException(e);
    } catch (IOException e) {
        log.error("", e);
        throw new BeanlibException(e);
    } finally {
        if (baos != null) {
            try {
                baos.close();
            } catch (IOException ex) {
                log.warn("", ex);
            }
        }
    }
}

From source file:com.facebook.infrastructure.db.Column.java

Column(String name) {
    this(name, ArrayUtils.EMPTY_BYTE_ARRAY);
}

From source file:com.bigdata.dastor.db.Column.java

Column(byte[] name) {
    this(name, ArrayUtils.EMPTY_BYTE_ARRAY);
}

From source file:com.facebook.infrastructure.net.io.StartState.java

protected byte[] doRead(ByteBuffer buffer) throws IOException, ReadNotCompleteException {
    SocketChannel socketChannel = stream_.getStream();
    int bytesRead = socketChannel.read(buffer);
    if (bytesRead == -1 && buffer.remaining() > 0) {
        throw new IOException("Reached an EOL or something bizzare occured. Reading from: "
                + socketChannel.socket().getInetAddress() + " BufferSizeRemaining: " + buffer.remaining());
    }/*  ww w.j  a  v a2 s  . c  om*/
    if (buffer.remaining() == 0) {
        morphState();
    } else {
        throw new ReadNotCompleteException(
                "Specified number of bytes have not been read from the Socket Channel");
    }
    return ArrayUtils.EMPTY_BYTE_ARRAY;
}

From source file:com.facebook.infrastructure.utils.FBUtilities.java

public static byte[] serializeToStream(Object o) {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    byte[] bytes = ArrayUtils.EMPTY_BYTE_ARRAY;
    try {/*from   ww  w  .  java2s .  com*/
        ObjectOutputStream oos = new ObjectOutputStream(bos);
        oos.writeObject(o);
        oos.flush();
        bytes = bos.toByteArray();
        oos.close();
        bos.close();
    } catch (IOException e) {
        LogUtil.getLogger(FBUtilities.class.getName()).info(LogUtil.throwableToString(e));
    }
    return bytes;
}

From source file:com.facebook.infrastructure.net.io.TcpReader.java

public byte[] read() throws IOException {
    byte[] bytes = ArrayUtils.EMPTY_BYTE_ARRAY;
    while (socketState_ != null) {
        try {//from   ww w  .j a  va2s .c o  m
            bytes = socketState_.read();
        } catch (ReadNotCompleteException e) {
            break;
        }
    }
    return bytes;
}

From source file:com.facebook.infrastructure.service.ReadResponseResolver.java

public Row resolve(List<Message<byte[]>> responses) throws DigestMismatchException {
    long startTime = System.currentTimeMillis();
    Row retRow = null;//from  w w  w .j  a v a 2 s.c  om
    List<Row> rowList = new ArrayList<Row>();
    List<EndPoint> endPoints = new ArrayList<EndPoint>();
    String key = null;
    String table = null;
    byte[] digest = ArrayUtils.EMPTY_BYTE_ARRAY;
    boolean isDigestQuery = false;

    /*
    * Populate the list of rows from each of the messages
    * Check to see if there is a digest query. If a digest 
     * query exists then we need to compare the digest with 
     * the digest of the data that is received.
    */
    DataInputBuffer bufIn = new DataInputBuffer();
    for (Message<byte[]> response : responses) {
        byte[] body = response.getMessageBody();
        bufIn.reset(body, body.length);
        long start = System.currentTimeMillis();
        ReadResponse result = null;
        try {
            result = ReadResponse.serializer().deserialize(bufIn);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        logger_.trace("Response deserialization time : " + (System.currentTimeMillis() - start) + " ms.");
        if (!result.isDigestQuery()) {
            rowList.add(result.row());
            endPoints.add(response.getFrom());
            key = result.row().key();
            table = result.table();
        } else {
            digest = result.digest();
            isDigestQuery = true;
        }
    }
    // If there was a digest query compare it withh all teh data digests 
    // If there is a mismatch then thwrow an exception so that read repair can happen.
    if (isDigestQuery) {
        for (Row row : rowList) {
            if (!Arrays.equals(row.digest(), digest)) {
                throw new DigestMismatchException("The Digest does not match");
            }
        }
    }

    /* If the rowList is empty then we had some exception above. */
    if (rowList.size() == 0) {
        return retRow;
    }

    /* Now calculate the resolved row */
    retRow = new Row(key);
    for (int i = 0; i < rowList.size(); i++) {
        retRow.repair(rowList.get(i));
    }
    // At  this point  we have the return row .
    // Now we need to calculate the differnce 
    // so that we can schedule read repairs 

    for (int i = 0; i < rowList.size(); i++) {
        // calculate the difference , since retRow is the resolved
        // row it can be used as the super set , remember no deletes 
        // will happen with diff its only for additions so far 
        // TODO : handle deletes 
        Row diffRow = rowList.get(i).diff(retRow);
        if (diffRow == null) // no repair needs to happen
            continue;
        // create the row mutation message based on the diff and schedule a read repair 
        RowMutation rowMutation = new RowMutation(table, key);
        for (ColumnFamily cf : diffRow.getColumnFamilies()) {
            rowMutation.add(cf);
        }
        // schedule the read repair
        ReadRepairManager.instance().schedule(endPoints.get(i), rowMutation);
    }
    logger_.trace("resolve: " + (System.currentTimeMillis() - startTime) + " ms.");
    return retRow;
}

From source file:com.bigdata.dastor.db.filter.QueryPath.java

public void serialize(DataOutputStream dos) throws IOException {
    assert !"".equals(columnFamilyName);
    assert superColumnName == null || superColumnName.length > 0;
    assert columnName == null || columnName.length > 0;
    dos.writeUTF(columnFamilyName == null ? "" : columnFamilyName);
    ColumnSerializer.writeName(superColumnName == null ? ArrayUtils.EMPTY_BYTE_ARRAY : superColumnName, dos);
    ColumnSerializer.writeName(columnName == null ? ArrayUtils.EMPTY_BYTE_ARRAY : columnName, dos);
}

Example usage for org.apache.commons.lang ArrayUtils EMPTY_BYTE_ARRAY

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