Example usage for java.nio ByteBuffer flip

List of usage examples for java.nio ByteBuffer flip

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Introduction

In this page you can find the example usage for java.nio ByteBuffer flip.

Prototype

public final Buffer flip()

Source Link

Document

Flips this buffer.

Usage

From source file:cn.ac.ncic.mastiff.io.coding.DeltaBinaryBitPackingZigZarIntReader.java

@Override
public byte[] ensureDecompressed() throws IOException {
    FlexibleEncoding.ORC.DynamicByteArray dynamicBuffer = new FlexibleEncoding.ORC.DynamicByteArray();
    dynamicBuffer.add(inBuf.getData(), 12, inBuf.getLength() - 12);
    FlexibleEncoding.Parquet.DeltaBinaryPackingValuesReader reader = new FlexibleEncoding.Parquet.DeltaBinaryPackingValuesReader();
    ByteBuffer byteBuf = ByteBuffer.allocate(dynamicBuffer.size());
    dynamicBuffer.setByteBuffer(byteBuf, 0, dynamicBuffer.size());
    byteBuf.flip();
    reader.initFromPage(numPairs, byteBuf.array(), 0);
    DataOutputBuffer decoding = new DataOutputBuffer();
    decoding.writeInt(decompressedSize);
    decoding.writeInt(numPairs);/*  w ww.j av a  2s. c  o m*/
    decoding.writeInt(startPos);
    for (int i = 0; i < numPairs; i++) {
        int tmp = reader.readInteger();
        decoding.writeInt(tmp);
    }
    byteBuf.clear();
    inBuf.close();
    return decoding.getData();
}

From source file:org.alfresco.patch.PatchServiceImpl.java

@Override
public PatchDocument getPatch(String nodeId, long nodeVersion) throws IOException {
    if (contentStore.exists(nodeId, nodeVersion - 1, true)) {
        // previous version
        NodeChecksums nodeChecksums = checksumService.getChecksums(nodeId, nodeVersion - 1);
        if (nodeChecksums != null) {
            // parameters version
            NodeInfo nodeInfo1 = contentDAO.getByNodeId(nodeId, nodeVersion, true);
            String contentPath1 = nodeInfo1.getContentPath();
            FileChannel inChannel = contentStore.getChannel(contentPath1);
            ByteBuffer buffer = ByteBuffer.allocate(1024 * 100);
            inChannel.read(buffer);/*from   ww  w .j  a v a 2 s .  c o  m*/
            buffer.flip();

            PatchDocument patchDocument = checksumService.createPatchDocument(nodeChecksums, buffer);
            return patchDocument;
        } else {
            throw new RuntimeException("No patches available, no checksums for node " + nodeId
                    + ", nodeVersion " + (nodeVersion - 1));
        }
    } else {
        throw new RuntimeException("No patches available, only a single version of the node");
    }
}

From source file:cn.ac.ncic.mastiff.io.coding.DeltaBinaryArrayZigZarByteReader.java

public byte[] CompressensureDecompressed() throws IOException {
    FlexibleEncoding.ORC.DynamicByteArray dynamicBuffer = new FlexibleEncoding.ORC.DynamicByteArray();
    dynamicBuffer.add(inBuf.getData(), 0, inBuf.getLength());
    FlexibleEncoding.Parquet.DeltaByteArrayReader reader = new FlexibleEncoding.Parquet.DeltaByteArrayReader();
    ByteBuffer byteBuf = ByteBuffer.allocate(dynamicBuffer.size());
    dynamicBuffer.setByteBuffer(byteBuf, 0, dynamicBuffer.size());
    byteBuf.flip();
    reader.initFromPage(numPairs, byteBuf.array(), 0);
    DataOutputBuffer decoding = new DataOutputBuffer();
    decoding.writeInt(decompressedSize);
    decoding.writeInt(numPairs);// w ww.j  a v a 2s  .co  m
    decoding.writeInt(startPos);
    for (int i = 0; i < numPairs; i++) {
        byte tmp = Byte.parseByte(reader.readBytes().toStringUsingUTF8());
        decoding.writeByte(tmp);
    }
    byteBuf.clear();
    inBuf.close();
    return decoding.getData();
}

From source file:com.robonobo.eon.DEONConnection.java

void receivePacket(EONPacket eonPacket) {
    DEONPacket packet = (DEONPacket) eonPacket;
    ByteBuffer buf = ByteBuffer.allocate(packet.getPayload().limit());
    buf.put(packet.getPayload());/*from  w w w  . j  a  v  a 2s.  c o m*/
    buf.flip();
    EonSocketAddress addr = packet.getSourceSocketAddress();
    receiveLock.lock();
    try {
        incomingDataBufs.add(buf);
        incomingDataAddrs.add(addr);
        if (dataReceiver == null)
            canReceive.signal();
        else {
            // Async read
            if (dataReceiverRunning) // This will be picked up by the already-running receiver
                return;
            else
                fireAsyncReceiver();
        }
    } finally {
        receiveLock.unlock();
    }
}

From source file:org.apache.hadoop.hdfs.hoss.db.HotStore.java

/**
 * /*  w ww .j a v a2  s .  c  o m*/
 * @param objId
 * @param createTime
 * @param lastTime
 * @param size  object size(unit:MB)
 * @return
 */
public boolean put(long objId, long createTime, long lastTime, long size) {
    final WriteBuffer wbuf = fbs.set((int) objId);
    final ByteBuffer buf = wbuf.buf();
    // create time
    buf.putLong(createTime);
    // last access time
    buf.putLong(lastTime);
    long sizeMB = size < 0 ? -1 : convertMB(size);
    // object size(unit:MB)
    buf.putLong(sizeMB);
    buf.flip();
    boolean ret = wbuf.save();
    return ret;
}

From source file:cn.ac.ncic.mastiff.io.coding.DeltaBinaryArrayZigZarByteReader.java

@Override
public byte[] ensureDecompressed() throws IOException {
    FlexibleEncoding.ORC.DynamicByteArray dynamicBuffer = new FlexibleEncoding.ORC.DynamicByteArray();
    dynamicBuffer.add(inBuf.getData(), 12, inBuf.getLength() - 12);
    FlexibleEncoding.Parquet.DeltaByteArrayReader reader = new FlexibleEncoding.Parquet.DeltaByteArrayReader();
    ByteBuffer byteBuf = ByteBuffer.allocate(dynamicBuffer.size());
    dynamicBuffer.setByteBuffer(byteBuf, 0, dynamicBuffer.size());
    byteBuf.flip();
    reader.initFromPage(numPairs, byteBuf.array(), 0);
    DataOutputBuffer decoding = new DataOutputBuffer();
    decoding.writeInt(decompressedSize);
    decoding.writeInt(numPairs);/*from  www . ja v  a 2s.c om*/
    decoding.writeInt(startPos);
    for (int i = 0; i < numPairs; i++) {
        byte tmp = Byte.parseByte(reader.readBytes().toStringUsingUTF8());
        decoding.writeByte(tmp);
    }
    byteBuf.clear();
    inBuf.close();
    return decoding.getData();
}

From source file:tachyon.master.RawTables.java

/**
 * Update the metadata of the specified raw table. It will check if the table exists.
 *
 * @param tableId The id of the raw table
 * @param metadata The new metadata of the raw table
 * @throws TachyonException//from   ww  w . j  ava2 s  .c  o  m
 */
// TODO add version number.
public synchronized void updateMetadata(int tableId, ByteBuffer metadata) throws TachyonException {
    Pair<Integer, ByteBuffer> data = mData.get(tableId);

    if (null == data) {
        throw new TachyonException("The raw table " + tableId + " does not exist.");
    }

    if (metadata == null) {
        data.setSecond(ByteBuffer.allocate(0));
    } else {
        long maxVal = mTachyonConf.getBytes(Constants.MAX_TABLE_METADATA_BYTE, 0L);
        if (metadata.limit() - metadata.position() >= maxVal) {
            throw new TachyonException("Too big table metadata: " + metadata.toString());
        }
        ByteBuffer tMetadata = ByteBuffer.allocate(metadata.limit() - metadata.position());
        tMetadata.put(metadata.array(), metadata.position(), metadata.limit() - metadata.position());
        tMetadata.flip();
        data.setSecond(tMetadata);
    }
}

From source file:org.alfresco.cacheserver.dropwizard.resources.CacheServerResource.java

private void fastChannelCopy(final ReadableByteChannel src, final WritableByteChannel dest) throws IOException {
    final ByteBuffer buffer = ByteBuffer.allocateDirect(16 * 1024);
    while (src.read(buffer) != -1) {
        // prepare the buffer to be drained
        buffer.flip();
        // write to the channel, may block
        dest.write(buffer);/*from  w  w  w .j a  v  a  2  s .c om*/
        // If partial transfer, shift remainder down
        // If buffer is empty, same as doing clear()
        buffer.compact();
    }
    // EOF will leave buffer in fill state
    buffer.flip();
    // make sure the buffer is fully drained.
    while (buffer.hasRemaining()) {
        dest.write(buffer);
    }
}

From source file:org.apache.asterix.experiment.builder.AbstractExperiment8Builder.java

protected String getPointLookUpAQL(int round) {
    ByteBuffer bb = ByteBuffer.allocate(8);
    bb.put((byte) 0);
    bb.put((byte) randGen.nextInt(N_PARTITIONS));
    bb.putShort((short) 0);
    bb.putInt(randGen.nextInt((int) (((1 + round) * dataInterval) / 1000)));
    bb.flip();
    long key = bb.getLong();
    return pointQueryTemplate.replaceAll("\\$KEY\\$", Long.toString(key));
}

From source file:cn.ac.ncic.mastiff.io.coding.RunLengthEncodingByteReader.java

public byte[] CompressensureDecompressed() throws IOException {
    FlexibleEncoding.ORC.DynamicByteArray dynamicBuffer = new FlexibleEncoding.ORC.DynamicByteArray();
    dynamicBuffer.add(inBuf.getData(), 0, inBuf.getLength());
    ByteBuffer byteBuf = ByteBuffer.allocate(dynamicBuffer.size());
    dynamicBuffer.setByteBuffer(byteBuf, 0, dynamicBuffer.size());
    byteBuf.flip();
    FlexibleEncoding.ORC.InStream instream = FlexibleEncoding.ORC.InStream.create("test", byteBuf, null,
            dynamicBuffer.size());//  w ww .  j  av a2  s .c  o m
    RunLengthByteReader rlein = new RunLengthByteReader(instream);
    DataOutputBuffer decoding = new DataOutputBuffer();
    decoding.writeInt(decompressedSize);
    decoding.writeInt(numPairs);
    decoding.writeInt(startPos);
    for (int i = 0; i < numPairs; i++) {
        byte tmp = rlein.next();
        decoding.writeByte(tmp);
    }
    byteBuf.clear();
    inBuf.close();
    return decoding.getData();
}