Java Code Examples for org.apache.cassandra.utils.ByteBufferUtil#toLong()

@Override
public Long deserialize(ByteBuffer paramByteBuffer, ProtocolVersion paramProtocolVersion) throws InvalidTypeException {
	if (paramByteBuffer == null) {
		return null;

	}
	// always duplicate the ByteBuffer instance before consuming it!
	return ByteBufferUtil.toLong(paramByteBuffer.duplicate());
}
 

@Override
public BigDecimal deserialize(ByteBuffer paramByteBuffer, ProtocolVersion paramProtocolVersion) throws InvalidTypeException {
	if (paramByteBuffer == null) {
		return null;

	}
	// always duplicate the ByteBuffer instance before consuming it!
	Long value = ByteBufferUtil.toLong(paramByteBuffer.duplicate());
	return new BigDecimal(value);
}
 

@Override
public Integer deserialize(ByteBuffer paramByteBuffer, ProtocolVersion paramProtocolVersion) throws InvalidTypeException {
	if (paramByteBuffer == null) {
		return null;

	}
	// always duplicate the ByteBuffer instance before consuming it!
	Long value = ByteBufferUtil.toLong(paramByteBuffer.duplicate());
	return value.intValue();
}
 

@Override
public Long deserialize(ByteBuffer paramByteBuffer, ProtocolVersion paramProtocolVersion) throws InvalidTypeException {
	if (paramByteBuffer == null) {
		return null;

	}
	// always duplicate the ByteBuffer instance before consuming it!
	return ByteBufferUtil.toLong(paramByteBuffer.duplicate());
}
 

public void map(ByteBuffer key, SortedMap<ByteBuffer, Cell> columns, Context context) throws IOException, InterruptedException
{
    long sum = 0;
    for (Cell cell : columns.values())
    {
        logger.debug("read " + key + ":" + cell.name() + " from " + context.getInputSplit());
        sum += ByteBufferUtil.toLong(cell.value());
    }
    context.write(new Text(ByteBufferUtil.string(key)), new LongWritable(sum));
}
 

private static void setupKeyspace(Cassandra.Iface client)  
        throws InvalidRequestException, 
        UnavailableException, 
        TimedOutException, 
        SchemaDisagreementException, 
        TException
{
    KsDef ks;
    try
    {
        ks = client.describe_keyspace(WordCount.KEYSPACE);
    }
    catch(NotFoundException e)
    {
        logger.info("set up keyspace " + WordCount.KEYSPACE);
        String query = "CREATE KEYSPACE " + WordCount.KEYSPACE +
                          " WITH replication = {'class': 'SimpleStrategy', 'replication_factor' : 1}"; 

        client.execute_cql3_query(ByteBufferUtil.bytes(query), Compression.NONE, ConsistencyLevel.ONE);

        String verifyQuery = "select count(*) from system.peers";
        CqlResult result = client.execute_cql3_query(ByteBufferUtil.bytes(verifyQuery), Compression.NONE, ConsistencyLevel.ONE);

        long magnitude = ByteBufferUtil.toLong(result.rows.get(0).columns.get(0).value);
        try
        {
            Thread.sleep(1000 * magnitude);
        }
        catch (InterruptedException ie)
        {
            throw new RuntimeException(ie);
        }
    }
}
 

public void execute(ByteBuffer rowKey, ColumnFamily cf, Composite prefix, UpdateParameters params) throws InvalidRequestException
{
    ByteBuffer bytes = t.bindAndGet(params.options);
    if (bytes == null)
        throw new InvalidRequestException("Invalid null value for counter increment");
    long increment = ByteBufferUtil.toLong(bytes);
    CellName cname = cf.getComparator().create(prefix, column);
    cf.addColumn(params.makeCounter(cname, increment));
}
 

public void execute(ByteBuffer rowKey, ColumnFamily cf, Composite prefix, UpdateParameters params) throws InvalidRequestException
{
    ByteBuffer bytes = t.bindAndGet(params.options);
    if (bytes == null)
        throw new InvalidRequestException("Invalid null value for counter increment");

    long increment = ByteBufferUtil.toLong(bytes);
    if (increment == Long.MIN_VALUE)
        throw new InvalidRequestException("The negation of " + increment + " overflows supported counter precision (signed 8 bytes integer)");

    CellName cname = cf.getComparator().create(prefix, column);
    cf.addColumn(params.makeCounter(cname, -increment));
}
 

public Token fromByteArray(ByteBuffer bytes)
{
    return new LongToken(ByteBufferUtil.toLong(bytes));
}
 

public Long deserialize(ByteBuffer bytes)
{
    return bytes.remaining() == 0 ? null : ByteBufferUtil.toLong(bytes);
}
 

public Date deserialize(ByteBuffer bytes)
{
    return bytes.remaining() == 0 ? null : new Date(ByteBufferUtil.toLong(bytes));
}