Example usage for java.io DataOutput write

Introduction

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

Prototype

void write(byte b[]) throws IOException;

Source Link

Document

Writes to the output stream all the bytes in array b.

Usage

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

@Override
public void write(DataOutput out) throws IOException {
    super.write(out);
    out.writeLong(timestamp);//from w w w  .  ja v  a  2 s. 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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From source file:com.ebay.erl.mobius.core.model.Tuple.java

/**
 * Serialize this tuple to the output <code>out</code>.
 * <p>// w  ww . j ava2s.c  o m
 * 
 * When serialize, the values are stored in the order
 * of schema name's ordering. See {@link #setSchema(String[])}
 * for more explanation.
 */
@Override
public void write(DataOutput out) throws IOException {
    // write the size of the column of this tuple
    out.writeInt(this.values.size());

    if (this.values.size() != this.namesToIdxMapping.size()) {
        StringBuffer sb = new StringBuffer();
        for (Object v : values)
            sb.append(v.toString()).append(",");
        throw new IllegalArgumentException(this.getClass().getCanonicalName()
                + ", the length of values and schmea is not the same, "
                + "very likely the schema of this tuple has not been set yet, please set it using Tuple#setSchema(String[])."
                + " Values:[" + sb.toString() + "] schema:" + this.namesToIdxMapping.keySet());
    }

    WriteImpl writeImpl = new WriteImpl(out);

    for (String aColumnName : getSorted(this.namesToIdxMapping.keySet())) {
        Object value = this.values.get(this.namesToIdxMapping.get(aColumnName));
        byte type = getType(value);
        out.write(type);

        writeImpl.setValue(value);
        writeImpl.handle(type);
    }
}

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From source file:org.apache.accumulo.core.client.BatchWriterConfig.java

@Override
public void write(DataOutput out) throws IOException {
    // write this out in a human-readable way
    ArrayList<String> fields = new ArrayList<String>();
    if (maxMemory != null)
        addField(fields, "maxMemory", maxMemory);
    if (maxLatency != null)
        addField(fields, "maxLatency", maxLatency);
    if (maxWriteThreads != null)
        addField(fields, "maxWriteThreads", maxWriteThreads);
    if (timeout != null)
        addField(fields, "timeout", timeout);
    if (durability != Durability.DEFAULT)
        addField(fields, "durability", durability);
    String output = StringUtils.join(",", fields);

    byte[] bytes = output.getBytes(UTF_8);
    byte[] len = String.format("%6s#", Integer.toString(bytes.length, 36)).getBytes(UTF_8);
    if (len.length != 7)
        throw new IllegalStateException("encoded length does not match expected value");
    out.write(len);
    out.write(bytes);//  ww w  .ja v  a2 s. co m
}

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From source file:org.apache.carbondata.core.metadata.blocklet.BlockletInfo.java

/**
 * Serialize datachunks as well for older versions like V1 and V2
 *//*from  ww  w . j a va 2 s  . c  o  m*/
private void writeChunkInfoForOlderVersions(DataOutput output) throws IOException {
    int dimChunksSize = dimensionColumnChunk != null ? dimensionColumnChunk.size() : 0;
    output.writeShort(dimChunksSize);
    for (int i = 0; i < dimChunksSize; i++) {
        byte[] bytes = serializeDataChunk(dimensionColumnChunk.get(i));
        output.writeInt(bytes.length);
        output.write(bytes);
    }
    int msrChunksSize = measureColumnChunk != null ? measureColumnChunk.size() : 0;
    output.writeShort(msrChunksSize);
    for (int i = 0; i < msrChunksSize; i++) {
        byte[] bytes = serializeDataChunk(measureColumnChunk.get(i));
        output.writeInt(bytes.length);
        output.write(bytes);
    }
}

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From source file:org.apache.drill.exec.cache.CachedVectorContainer.java

@Override
public void write(DataOutput output) throws IOException {
    output.writeInt(data.length);
    output.write(data);
}

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From source file:org.apache.eagle.alert.engine.serialization.impl.JavaObjectSerializer.java

@Override
public void serialize(Object value, DataOutput dataOutput) throws IOException {
    byte[] bytes = SerializationUtils.serialize((Serializable) value);
    dataOutput.writeInt(bytes.length);/*from   w w  w.  java 2s . c  om*/
    dataOutput.write(bytes);
}

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From source file:org.apache.geode.internal.cache.DiskInitFile.java

static void writeDiskRegionID(DataOutput dos, long drId) throws IOException {
    // If the drId is <= 255 (max unsigned byte) then
    // encode it as a single byte.
    // Otherwise write a byte whose value is the number of bytes
    // it will be encoded by and then follow it with that many bytes.
    // Note that drId are not allowed to have a value in the range 1..8 inclusive.
    if (drId >= 0 && drId <= 255) {
        dos.write((byte) drId);
    } else {// w  w  w.j a v  a2 s.  co m
        byte bytesNeeded = (byte) Oplog.bytesNeeded(drId);
        dos.write(bytesNeeded);
        byte[] bytes = new byte[bytesNeeded];
        for (int i = bytesNeeded - 1; i >= 0; i--) {
            bytes[i] = (byte) (drId & 0xFF);
            drId >>= 8;
        }
        dos.write(bytes);
    }
}

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From source file:org.apache.geode.internal.InternalDataSerializer.java

/**
 * write an object in java Serializable form with a SERIALIZABLE DSCODE so that it can be
 * deserialized with DataSerializer.readObject()
 * /*from   w  ww. j  av a  2 s . c o  m*/
 * @param o the object to serialize
 * @param out the data output to serialize to
 */
public static void writeSerializableObject(Object o, DataOutput out) throws IOException {
    out.writeByte(SERIALIZABLE);
    if (out instanceof ObjectOutputStream) {
        ((ObjectOutputStream) out).writeObject(o);
    } else {
        OutputStream stream;
        if (out instanceof OutputStream) {
            stream = (OutputStream) out;

        } else {
            final DataOutput out2 = out;
            stream = new OutputStream() {
                @Override
                public void write(int b) throws IOException {
                    out2.write(b);
                }
            };
        }
        boolean wasDoNotCopy = false;
        if (out instanceof HeapDataOutputStream) {
            // To fix bug 52197 disable doNotCopy mode
            // while serialize with an ObjectOutputStream.
            // The problem is that ObjectOutputStream keeps
            // an internal byte array that it reuses while serializing.
            wasDoNotCopy = ((HeapDataOutputStream) out).setDoNotCopy(false);
        }
        try {
            ObjectOutput oos = new ObjectOutputStream(stream);
            if (stream instanceof VersionedDataStream) {
                Version v = ((VersionedDataStream) stream).getVersion();
                if (v != null && v != Version.CURRENT) {
                    oos = new VersionedObjectOutput(oos, v);
                }
            }
            oos.writeObject(o);
            // To fix bug 35568 just call flush. We can't call close because
            // it calls close on the wrapped OutputStream.
            oos.flush();
        } finally {
            if (wasDoNotCopy) {
                ((HeapDataOutputStream) out).setDoNotCopy(true);
            }
        }
    }
}

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From source file:org.apache.geode.internal.InternalDataSerializer.java

/**
 * Write a variable length long the old way (pre 7.0). Use this only in contexts where you might
 * need to communicate with pre 7.0 members or files.
 *//*from   w  w w. j av  a  2  s  . c  om*/
public static void writeVLOld(long data, DataOutput out) throws IOException {
    if (data < 0) {
        Assert.fail("Data expected to be >=0 is " + data);
    }
    if (data <= MAX_BYTE_VL) {
        out.writeByte((byte) data);
    } else if (data <= 0x7FFF) {
        // set the sign bit to indicate a short
        out.write(((int) data >>> 8 | 0x80) & 0xFF);
        out.write((int) data >>> 0 & 0xFF);
    } else if (data <= Integer.MAX_VALUE) {
        out.writeByte(INT_VL);
        out.writeInt((int) data);
    } else {
        out.writeByte(LONG_VL);
        out.writeLong(data);
    }
}

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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 ww  .jav  a 2  s . c  om
    } else {
        out.write(DSCODE.PDX);
        out.writeInt(ur.basicSize());
        out.writeInt(ur.getPdxType().getTypeId());
        ur.basicSendTo(out);
    }
}

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