Java Code Examples for java.io.DataOutputStream#writeInt()

/**
 * .
 * 
 * @return byte[]
 */
public byte[] toByteArry() {
	ByteArrayOutputStream bous = new ByteArrayOutputStream();
	DataOutputStream dous = new DataOutputStream(bous);
	try {
		dous.writeInt(this.getTotalLength());
		dous.writeInt(this.getCommandId());
		dous.writeInt(this.getSequenceId());
		MsgUtils.writeString(dous, this.sourceAddr, 6);
		dous.write(authenticatorSource);
		dous.writeByte(0x30);
		dous.writeInt(Integer.parseInt(MsgUtils.getTimestamp()));
		dous.close();
	} catch (IOException e) {
		logger.error("封装链接二进制数组失败。");
	}
	return bous.toByteArray();
}
 

public static void addToDataOutputStream(DataOutputStream dataOutputStream, Number value,
    MetricType type) throws IOException {
  switch (type) {
  case SHORT:
    dataOutputStream.writeShort(value.shortValue());
    break;
  case INT:
    dataOutputStream.writeInt(value.intValue());
    break;
  case LONG:
    dataOutputStream.writeLong(value.longValue());
    break;
  case FLOAT:
    dataOutputStream.writeFloat(value.floatValue());
    break;
  case DOUBLE:
    dataOutputStream.writeDouble(value.doubleValue());
    break;
  }
}
 

/**
 * Generates a device- and invocation-specific seed to be mixed into the
 * Linux PRNG.
 */
private static byte[] generateSeed() {
    try {
        ByteArrayOutputStream seedBuffer = new ByteArrayOutputStream();
        DataOutputStream seedBufferOut =
                new DataOutputStream(seedBuffer);
        seedBufferOut.writeLong(System.currentTimeMillis());
        seedBufferOut.writeLong(System.nanoTime());
        seedBufferOut.writeInt(Process.myPid());
        seedBufferOut.writeInt(Process.myUid());
        seedBufferOut.write(BUILD_FINGERPRINT_AND_DEVICE_SERIAL);
        seedBufferOut.close();
        return seedBuffer.toByteArray();
    } catch (IOException e) {
        throw new SecurityException("Failed to generate seed", e);
    }
}
 

/**
 * This method allows us to store a package image into a persistent stream easily
 * thus allowing us to store the image in RMS.
 * 
 * @return a byte array that can be loaded using the load method
 */
public byte[] toByteArray() {
    try {
        ByteArrayOutputStream array = new ByteArrayOutputStream();
        DataOutputStream out = new DataOutputStream(array);
        out.writeShort(width);
        out.writeShort(height);
        out.writeByte(palette.length);
        int plen = palette.length;
        for (int iter = 0; iter < plen; iter++) {
            out.writeInt(palette[iter]);
        }
        out.write(imageDataByte);
        out.close();
        return array.toByteArray();
    } catch (IOException ex) {
        // will never happen since IO is purely in memory
        ex.printStackTrace();
        return null;
    }
}
 

private static byte[] serializeInternal(List<Bytes> splits) throws IOException {
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  GZIPOutputStream gzOut = new GZIPOutputStream(baos);
  BufferedOutputStream bos = new BufferedOutputStream(gzOut, 1 << 16);
  DataOutputStream dos = new DataOutputStream(bos);

  dos.writeInt(splits.size());
  for (Bytes split : splits) {
    dos.writeInt(split.length());
    split.writeTo(dos);
  }

  dos.close();

  return baos.toByteArray();
}
 

public void write(DataOutputStream out) throws IOException {
    if (value instanceof String) {
        out.writeByte(CONSTANT_UTF8);
        out.writeUTF((String) value);
    } else if (value instanceof Integer) {
        out.writeByte(CONSTANT_INTEGER);
        out.writeInt(((Integer) value).intValue());
    } else if (value instanceof Float) {
        out.writeByte(CONSTANT_FLOAT);
        out.writeFloat(((Float) value).floatValue());
    } else if (value instanceof Long) {
        out.writeByte(CONSTANT_LONG);
        out.writeLong(((Long) value).longValue());
    } else if (value instanceof Double) {
        out.writeDouble(CONSTANT_DOUBLE);
        out.writeDouble(((Double) value).doubleValue());
    } else {
        throw new InternalError("bogus value entry: " + value);
    }
}
 

private static void write() throws IOException {
	// DataOutputStream(OutputStream out)
	DataOutputStream dos = new DataOutputStream(new FileOutputStream(
			"dos.txt"));

	// ���
	dos.writeByte(1);
	dos.writeShort(10);
	dos.writeInt(100);
	dos.writeLong(1000);
	dos.writeFloat(1.1f);
	dos.writeDouble(2.2);
	dos.writeChar('a');
	dos.writeBoolean(true);

	// �ͷ���Դ
	dos.close();
}
 

@Override
public void saveScreenState(DataOutputStream dos) throws IOException {
	Toc toc = Toc.read(game.getFileIO().readPrivateFile("library/toc.xml"), game.getFileIO());
	TocEntry[] entries = toc.getEntries();
	int index = findTocEntryIndex(entries, tocEntry.getName(), 0);
	if (index < 0) {
		index = 0;
	}
	dos.writeInt(index);		 
	dos.writeInt(currentFilter == null ? 0 : currentFilter.length());
	if (currentFilter != null) {
		dos.writeChars(currentFilter);
	}
	dos.writeInt(yPosition);

}
 

/**
 * Dump instruction as byte code to stream out.
 * @param out Output stream
 */
@Override
public void dump( final DataOutputStream out ) throws IOException {
    super.setIndex(getTargetOffset());
    out.writeByte(super.getOpcode());
    out.writeInt(super.getIndex());
}
 

/**
 * {@inheritDoc}
 */
public void writeWire(final DataOutputStream out) throws IOException {

   super.writeWire(out);
   SerializerUtils.writeAddress(representative, out);
   SerializerUtils.writeString(clusterName, out);

   out.writeBoolean(operationalCluster);
   out.writeInt(markerListSize);
}
 

/** Writes the entire state of the MersenneTwister RNG to the stream */
public synchronized void writeState(DataOutputStream stream) throws IOException
    {
    int len = mt.length;
    for(int x=0;x<len;x++) stream.writeInt(mt[x]);
    
    len = mag01.length;
    for(int x=0;x<len;x++) stream.writeInt(mag01[x]);
    
    stream.writeInt(mti);
    stream.writeDouble(__nextNextGaussian);
    stream.writeBoolean(__haveNextNextGaussian);
    }
 

private static void serializeSubtaskState(OperatorSubtaskState subtaskState, DataOutputStream dos) throws IOException {

		dos.writeLong(-1);

		int len = 0;
		dos.writeInt(len);

		OperatorStateHandle operatorStateBackend = extractSingleton(subtaskState.getManagedOperatorState());

		len = operatorStateBackend != null ? 1 : 0;
		dos.writeInt(len);
		if (len == 1) {
			serializeOperatorStateHandle(operatorStateBackend, dos);
		}

		OperatorStateHandle operatorStateFromStream = extractSingleton(subtaskState.getRawOperatorState());

		len = operatorStateFromStream != null ? 1 : 0;
		dos.writeInt(len);
		if (len == 1) {
			serializeOperatorStateHandle(operatorStateFromStream, dos);
		}

		KeyedStateHandle keyedStateBackend = extractSingleton(subtaskState.getManagedKeyedState());
		serializeKeyedStateHandle(keyedStateBackend, dos);

		KeyedStateHandle keyedStateStream = extractSingleton(subtaskState.getRawKeyedState());
		serializeKeyedStateHandle(keyedStateStream, dos);
	}
 

@SuppressWarnings("unchecked")
public static <T extends ClientProtocol> T receiveClientProtocolNegotiation(final DataInputStream dis, final DataOutputStream dos) throws IOException, HandshakeException {
    final String protocolName = dis.readUTF();
    final int version = dis.readInt();

    final T protocol = (T) RemoteResourceManager.createClientProtocol(protocolName);
    final VersionNegotiator negotiator = protocol.getVersionNegotiator();
    if (negotiator.isVersionSupported(version)) {
        dos.write(RESOURCE_OK);
        dos.flush();

        negotiator.setVersion(version);
        return protocol;
    } else {
        final Integer preferred = negotiator.getPreferredVersion(version);
        if (preferred == null) {
            dos.write(ABORT);
            dos.flush();
            throw new HandshakeException("Unable to negotiate an acceptable version of the ClientProtocol " + protocolName);
        }
        dos.write(DIFFERENT_RESOURCE_VERSION);
        dos.writeInt(preferred);
        dos.flush();

        return receiveClientProtocolNegotiation(dis, dos);
    }
}
 

private static void initiateVersionNegotiation(final VersionNegotiator negotiator, final DataInputStream dis, final DataOutputStream dos) throws IOException, HandshakeException {
    // Write the classname of the RemoteStreamCodec, followed by its version
    dos.writeInt(negotiator.getVersion());
    dos.flush();

    // wait for response from server.
    final int statusCode = dis.read();
    switch (statusCode) {
        case RESOURCE_OK:   // server accepted our proposal of codec name/version
            return;
        case DIFFERENT_RESOURCE_VERSION:    // server accepted our proposal of codec name but not the version
            // Get server's preferred version
            final int newVersion = dis.readInt();

            // Determine our new preferred version that is no greater than the server's preferred version.
            final Integer newPreference = negotiator.getPreferredVersion(newVersion);
            // If we could not agree with server on a version, fail now.
            if (newPreference == null) {
                throw new HandshakeException("Could not agree on protocol version");
            }

            negotiator.setVersion(newPreference);

            // Attempt negotiation of resource based on our new preferred version.
            initiateVersionNegotiation(negotiator, dis, dos);
            return;
        case ABORT:
            throw new HandshakeException("Remote destination aborted connection with message: " + dis.readUTF());
        default:
            throw new HandshakeException("Received unexpected response code " + statusCode + " when negotiating version with remote server");
    }
}
 

public void write(DataOutputStream out) throws IOException {

		out.writeInt(fieldAssignmentsByName.size());
		for(String unqualifiedName : fieldAssignmentsByName.keySet()) {
			out.writeUTF(unqualifiedName);
			fieldAssignmentsByName.get(unqualifiedName).write(out);
		}		

	}
 

private static void writeBytesToDataStream(final byte[] bytes, final DataOutputStream dataStream)
  throws IOException {
  dataStream.writeInt(bytes.length);
  dataStream.write(bytes);
}
 

private void writeRecord(DataOutputStream os, CloverBuffer buffer) throws IOException {
	os.writeInt(buffer.remaining());
	os.write(buffer.array(), 0, buffer.limit());
}
 

private void write() throws IOException, BTreeException {
    if (!dirty) {
        return;
    }
    if (LOG.isTraceEnabled()) {
        LOG.trace((ph.getStatus() == LEAF ? "Leaf " : "Branch ") + "Node#"
                + page.getPageNum() + " - " + Arrays.toString(keys));
    }
    final FastMultiByteArrayOutputStream bos =
            new FastMultiByteArrayOutputStream(_fileHeader.getWorkSize());
    final DataOutputStream os = new DataOutputStream(bos);

    // write out the prefix
    final short prefixlen = ph.getPrefixLength();
    if (prefixlen > 0) {
        prefix.writeTo(os);
    }
    // Write out the Values
    Value prevKey = null;
    for (int i = 0; i < keys.length; i++) {
        final Value v = keys[i];
        if (v == prevKey) {
            os.writeInt(-1);
        } else {
            final int len = v.getLength();
            final int size = len - prefixlen;
            os.writeInt(size);
            if (size > 0) {
                v.writeTo(os, prefixlen, size);
            }
        }
        prevKey = v;
    }
    // Write out the pointers
    for (int i = 0; i < ptrs.length; i++) {
        VariableByteCodec.encodeUnsignedLong(ptrs[i], os);
    }
    // Write out link if current node is a leaf
    if (ph.getStatus() == LEAF) {
        os.writeLong(_prev);
        os.writeLong(_next);
    }

    writeValue(page, new Value(bos.toByteArray()));
    this.parentCache = null;
    setDirty(false);
}
 

public void
serialise(
	DataOutputStream	os )

	throws IOException
{
	super.serialise(os);
	
	if ( getProtocolVersion() >= DHTTransportUDP.PROTOCOL_VERSION_ANTI_SPOOF ){
		
		os.writeInt( random_id );
	}
	
	DHTUDPUtils.serialiseByteArrayArray( os, keys, MAX_KEYS_PER_PACKET );
	
	try{
		DHTUDPUtils.serialiseTransportValuesArray( this, os, value_sets, 0, MAX_KEYS_PER_PACKET );
		
	}catch( DHTTransportException e ){
		
		throw( new IOException( e.getMessage()));
	}
	
	super.postSerialise( os );
}
 

@Override
public void
serialise(
	DataOutputStream	os )

	throws IOException
{
	super.serialise(os);

	os.writeByte( packet_type );
	DHTUDPUtils.serialiseByteArray( os, transfer_key, 64 );

	int	max_key_size;

	if ( getProtocolVersion() >= DHTTransportUDP.PROTOCOL_VERSION_REPLICATION_CONTROL ){

		max_key_size = 255;

	}else{

		max_key_size = 64;
	}

	DHTUDPUtils.serialiseByteArray( os, key, max_key_size );
	os.writeInt( start_position );
	os.writeInt( length );
	os.writeInt( total_length );

	if ( data.length > 0 ){

		DHTUDPUtils.serialiseByteArray( os, data, start_position, length, 65535 );

	}else{

		DHTUDPUtils.serialiseByteArray( os, data,  65535 );
	}
}