Example usage for java.io DataOutput writeInt

Introduction

In this page you can find the example usage for java.io DataOutput writeInt.

Prototype

void writeInt(int v) throws IOException;

Source Link

Document

Writes an int value, which is comprised of four bytes, to the output stream.

Usage

From source file:org.apache.cassandra.io.LazilyCompactedRow.java

public void write(DataOutput out) throws IOException {
    if (rows.size() == 1 && !shouldPurge && !controller.needDeserialize()) {
        SSTableIdentityIterator row = rows.get(0);
        assert row.dataSize > 0;
        out.writeLong(row.dataSize);//from w w  w  . j a v a  2  s  . c  o  m
        row.echoData(out);
        return;
    }

    DataOutputBuffer clockOut = new DataOutputBuffer();
    ColumnFamily.serializer().serializeCFInfo(emptyColumnFamily, clockOut);

    long dataSize = headerBuffer.getLength() + clockOut.getLength() + columnSerializedSize;
    assert dataSize > 0;
    out.writeLong(dataSize);
    out.write(headerBuffer.getData(), 0, headerBuffer.getLength());
    out.write(clockOut.getData(), 0, clockOut.getLength());
    out.writeInt(columnCount);

    Iterator<IColumn> iter = iterator();
    while (iter.hasNext()) {
        IColumn column = iter.next();
        emptyColumnFamily.getColumnSerializer().serialize(column, out);
    }
}

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From source file:org.apache.geode.pdx.internal.PdxInstanceImpl.java

public void sendTo(DataOutput out) throws IOException {
    PdxReaderImpl ur = getUnmodifiableReader();
    if (ur.getPdxType().getHasDeletedField()) {
        PdxWriterImpl writer = convertToTypeWithNoDeletedFields(ur);
        writer.sendTo(out);/*from w w w. j av  a2 s .  co m*/
    } else {
        out.write(DSCODE.PDX);
        out.writeInt(ur.basicSize());
        out.writeInt(ur.getPdxType().getTypeId());
        ur.basicSendTo(out);
    }
}

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From source file:com.mapr.hbase.support.objects.MHRegionInfo090x.java

@Override
public void write(DataOutput out) throws IOException {
    super.write(out);
    Bytes.writeByteArray(out, endKey);//from   w  w  w.jav a2  s  . c  o  m
    out.writeBoolean(offLine);
    out.writeLong(regionId);
    Bytes.writeByteArray(out, regionName);
    out.writeBoolean(split);
    Bytes.writeByteArray(out, startKey);
    tableDesc.write(out);
    out.writeInt(hashCode);
}

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From source file:com.fiorano.openesb.application.DmiObject.java

/**
 *  This method writes the string specified by the <code>str</code> argument
 *  to the output stream specified by the <code>os</code> argument.
 *
 * @param os output stream//  w  w  w  .j  av  a  2  s. co m
 * @param str string to be written
 * @exception IOException IOException
 */
protected void writeUTF(DataOutput os, String str) throws IOException {
    if (str == null) {
        os.writeInt(-1);
    } else {
        byte[] bytes = str.getBytes("UTF-8");

        os.writeInt(bytes.length);
        os.write(bytes);
    }
}

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From source file:edu.umn.cs.spatialHadoop.visualization.FrequencyMap.java

@Override
public void write(DataOutput out) throws IOException {
    super.write(out);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    GZIPOutputStream gzos = new GZIPOutputStream(baos);
    ByteBuffer bbuffer = ByteBuffer.allocate(getHeight() * 4 + 8);
    bbuffer.putInt(getWidth());//from w  ww  . java2s .  co  m
    bbuffer.putInt(getHeight());
    gzos.write(bbuffer.array(), 0, bbuffer.position());
    for (int x = 0; x < getWidth(); x++) {
        bbuffer.clear();
        for (int y = 0; y < getHeight(); y++) {
            bbuffer.putFloat(frequencies[x][y]);
        }
        gzos.write(bbuffer.array(), 0, bbuffer.position());
    }
    gzos.close();

    byte[] serializedData = baos.toByteArray();
    out.writeInt(serializedData.length);
    out.write(serializedData);
}

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From source file:org.apache.hadoop.hbase.io.HbaseObjectWritable.java

/**
 * Write a {@link Writable}, {@link String}, primitive type, or an array of
 * the preceding./*from   w  w w .jav a 2 s  . com*/
 * @param out
 * @param instance
 * @param declaredClass
 * @param conf
 * @throws IOException
 */
@SuppressWarnings("unchecked")
public static void writeObject(DataOutput out, Object instance, Class declaredClass, Configuration conf)
        throws IOException {

    Object instanceObj = instance;
    Class declClass = declaredClass;

    if (instanceObj == null) { // null
        instanceObj = new NullInstance(declClass, conf);
        declClass = Writable.class;
    }
    writeClassCode(out, declClass);
    if (declClass.isArray()) { // array
        // If bytearray, just dump it out -- avoid the recursion and
        // byte-at-a-time we were previously doing.
        if (declClass.equals(byte[].class)) {
            Bytes.writeByteArray(out, (byte[]) instanceObj);
        } else if (declClass.equals(Result[].class)) {
            Result.writeArray(out, (Result[]) instanceObj);
        } else {
            //if it is a Generic array, write the element's type
            if (getClassCode(declaredClass) == GENERIC_ARRAY_CODE) {
                Class<?> componentType = declaredClass.getComponentType();
                writeClass(out, componentType);
            }

            int length = Array.getLength(instanceObj);
            out.writeInt(length);
            for (int i = 0; i < length; i++) {
                Object item = Array.get(instanceObj, i);
                writeObject(out, item, item.getClass(), conf);
            }
        }
    } else if (List.class.isAssignableFrom(declClass)) {
        List list = (List) instanceObj;
        int length = list.size();
        out.writeInt(length);
        for (int i = 0; i < length; i++) {
            Object elem = list.get(i);
            writeObject(out, elem, elem == null ? Writable.class : elem.getClass(), conf);
        }
    } else if (declClass == String.class) { // String
        Text.writeString(out, (String) instanceObj);
    } else if (declClass.isPrimitive()) { // primitive type
        if (declClass == Boolean.TYPE) { // boolean
            out.writeBoolean(((Boolean) instanceObj).booleanValue());
        } else if (declClass == Character.TYPE) { // char
            out.writeChar(((Character) instanceObj).charValue());
        } else if (declClass == Byte.TYPE) { // byte
            out.writeByte(((Byte) instanceObj).byteValue());
        } else if (declClass == Short.TYPE) { // short
            out.writeShort(((Short) instanceObj).shortValue());
        } else if (declClass == Integer.TYPE) { // int
            out.writeInt(((Integer) instanceObj).intValue());
        } else if (declClass == Long.TYPE) { // long
            out.writeLong(((Long) instanceObj).longValue());
        } else if (declClass == Float.TYPE) { // float
            out.writeFloat(((Float) instanceObj).floatValue());
        } else if (declClass == Double.TYPE) { // double
            out.writeDouble(((Double) instanceObj).doubleValue());
        } else if (declClass == Void.TYPE) { // void
        } else {
            throw new IllegalArgumentException("Not a primitive: " + declClass);
        }
    } else if (declClass.isEnum()) { // enum
        Text.writeString(out, ((Enum) instanceObj).name());
    } else if (Message.class.isAssignableFrom(declaredClass)) {
        Text.writeString(out, instanceObj.getClass().getName());
        ((Message) instance).writeDelimitedTo(DataOutputOutputStream.constructOutputStream(out));
    } else if (Writable.class.isAssignableFrom(declClass)) { // Writable
        Class<?> c = instanceObj.getClass();
        Integer code = CLASS_TO_CODE.get(c);
        if (code == null) {
            out.writeByte(NOT_ENCODED);
            Text.writeString(out, c.getName());
        } else {
            writeClassCode(out, c);
        }
        ((Writable) instanceObj).write(out);
    } else if (Serializable.class.isAssignableFrom(declClass)) {
        Class<?> c = instanceObj.getClass();
        Integer code = CLASS_TO_CODE.get(c);
        if (code == null) {
            out.writeByte(NOT_ENCODED);
            Text.writeString(out, c.getName());
        } else {
            writeClassCode(out, c);
        }
        ByteArrayOutputStream bos = null;
        ObjectOutputStream oos = null;
        try {
            bos = new ByteArrayOutputStream();
            oos = new ObjectOutputStream(bos);
            oos.writeObject(instanceObj);
            byte[] value = bos.toByteArray();
            out.writeInt(value.length);
            out.write(value);
        } finally {
            if (bos != null)
                bos.close();
            if (oos != null)
                oos.close();
        }
    } else {
        throw new IOException("Can't write: " + instanceObj + " as " + declClass);
    }
}

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From source file:org.apache.horn.core.RecurrentLayeredNeuralNetwork.java

@Override
public void write(DataOutput output) throws IOException {
    super.write(output);
    output.writeInt(finalLayerIdx);
    output.writeFloat(dropRate);//from www.j  a v a2  s. c  o m

    // write neuron classes
    output.writeInt(this.neuronClassList.size());
    for (Class<? extends Neuron> clazz : this.neuronClassList) {
        output.writeUTF(clazz.getName());
    }

    // write squashing functions
    output.writeInt(this.squashingFunctionList.size());
    for (FloatFunction aSquashingFunctionList : this.squashingFunctionList) {
        WritableUtils.writeString(output, aSquashingFunctionList.getFunctionName());
    }

    // write recurrent step size
    output.writeInt(this.recurrentStepSize);

    // write recurrent step size
    output.writeInt(this.numOutCells);

    // write recurrent layer list
    output.writeInt(this.recurrentLayerList.size());
    for (Boolean isReccurentLayer : recurrentLayerList) {
        output.writeBoolean(isReccurentLayer);
    }

    // write weight matrices
    output.writeInt(this.getSizeOfWeightmatrix());
    for (List<FloatMatrix> aWeightMatrixLists : this.weightMatrixLists) {
        for (FloatMatrix aWeightMatrixList : aWeightMatrixLists) {
            FloatMatrixWritable.write(aWeightMatrixList, output);
        }
    }

    // DO NOT WRITE WEIGHT UPDATE
}

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From source file:com.fiorano.openesb.application.aps.OutPortInst.java

/**
 *  This method is called to write this object of <code>OutPortInst</code>
 *  to the specified output stream object.
 *
 * @param out DataOutput object/*ww  w .j  av  a 2 s  .c  om*/
 * @param versionNo Description of the Parameter
 * @exception IOException if an error occurs while converting data and
 *      writing it to a binary stream.
 * @since Tifosi2.0
 */
public void toStream(DataOutput out, int versionNo) throws IOException {
    super.toStream(out, versionNo);

    writeUTF(out, m_strPortName);
    writeUTF(out, m_strDscription);
    writeUTF(out, m_strXSD);
    writeUTF(out, m_strContextXSL);
    writeUTF(out, m_strContextInfo);

    writeUTF(out, m_transformerType);
    writeUTF(out, m_strJavaClass);
    out.writeBoolean(m_bIsSyncRequestType);
    out.writeBoolean(m_bisDisabled);

    if (m_params != null && m_params.size() > 0) {
        int num = m_params.size();

        out.writeInt(num);
        for (int i = 0; i < num; ++i) {
            Param param = (Param) m_params.elementAt(i);

            param.toStream(out, versionNo);
        }
    } else {
        out.writeInt(0);
    }
}

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From source file:org.mhisoft.wallet.service.AttachmentService.java

/**
 * Write the file content to the dataout, which is the attachment store.
 * @param content//from   w  w w .j  ava  2 s .co  m
 * @param encryptor
 * @param dataOut
 * @param pos
 * @return
 * @throws IOException
 */
//return pos
private long writeEncryptedContent(byte[] content, final PBEEncryptor encryptor, DataOutput dataOut, long pos)
        throws IOException {

    logger.fine("writeEncryptedContent");
    PBEEncryptor.EncryptionResult ret = encryptor.encrypt(content);
    byte[] _byteEncrypted = ret.getEncryptedData();

    /*  cipherParameters size 4 bytes*/
    byte[] cipherParameters = ret.getCipherParameters();
    dataOut.writeInt(cipherParameters.length); //length is 100 bytes
    //logger.fine("\t cipherParameters length: " + cipherParameters.length);
    pos += 4;

    /* cipherParameters body*/
    dataOut.write(cipherParameters);
    pos += cipherParameters.length;

    /*  size of the  content*/
    logger.fine("\t size of the content: " + _byteEncrypted.length);
    dataOut.writeInt(_byteEncrypted.length);
    pos += 4;

    /*   content */
    dataOut.write(_byteEncrypted);
    pos += _byteEncrypted.length;

    return pos;

}

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From source file:edu.umn.cs.spatialHadoop.nasa.HDFRasterLayer.java

@Override
public void write(DataOutput out) throws IOException {
    super.write(out);
    out.writeLong(timestamp);//w ww.j  a  va  2s  .co m
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    GZIPOutputStream gzos = new GZIPOutputStream(baos);
    ByteBuffer bbuffer = ByteBuffer.allocate(getHeight() * 2 * 8 + 8);
    bbuffer.putInt(getWidth());
    bbuffer.putInt(getHeight());
    gzos.write(bbuffer.array(), 0, bbuffer.position());
    for (int x = 0; x < getWidth(); x++) {
        bbuffer.clear();
        for (int y = 0; y < getHeight(); y++) {
            bbuffer.putLong(sum[x][y]);
            bbuffer.putLong(count[x][y]);
        }
        gzos.write(bbuffer.array(), 0, bbuffer.position());
    }
    gzos.close();

    byte[] serializedData = baos.toByteArray();
    out.writeInt(serializedData.length);
    out.write(serializedData);
}

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