Example usage for java.nio ByteBuffer getLong

List of usage examples for java.nio ByteBuffer getLong

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Introduction

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

Prototype

public abstract long getLong();

Source Link

Document

Returns the long at the current position and increases the position by 8.

Usage

From source file:edu.umn.cs.spatialHadoop.core.ZCurvePartitioner.java

@Override
public void readFields(DataInput in) throws IOException {
    mbr.readFields(in);/*from   w  ww . ja  va 2 s .  c om*/
    int partitionCount = in.readInt();
    zSplits = new long[partitionCount];
    int bufferLength = 8 * partitionCount;
    byte[] buffer = new byte[bufferLength];
    in.readFully(buffer);
    ByteBuffer bbuffer = ByteBuffer.wrap(buffer);
    for (int i = 0; i < partitionCount; i++) {
        zSplits[i] = bbuffer.getLong();
    }
    if (bbuffer.hasRemaining())
        throw new RuntimeException("Error reading STR partitioner");
}

From source file:com.datatorrent.contrib.hdht.HDHTDynamicPartitioningTest.java

public long getLong(byte[] value) throws IOException {
    ByteBuffer bb = ByteBuffer.wrap(value);
    return bb.getLong();
}

From source file:org.apache.bookkeeper.bookie.EntryLogTest.java

@Test(timeout = 60000)
public void testMissingLogId() throws Exception {
    File tmpDir = createTempDir("entryLogTest", ".dir");
    File curDir = Bookie.getCurrentDirectory(tmpDir);
    Bookie.checkDirectoryStructure(curDir);

    ServerConfiguration conf = TestBKConfiguration.newServerConfiguration();
    conf.setLedgerDirNames(new String[] { tmpDir.toString() });
    Bookie bookie = new Bookie(conf);
    // create some entries
    int numLogs = 3;
    int numEntries = 10;
    long[][] positions = new long[2 * numLogs][];
    for (int i = 0; i < numLogs; i++) {
        positions[i] = new long[numEntries];

        EntryLogger logger = new EntryLogger(conf, bookie.getLedgerDirsManager());
        for (int j = 0; j < numEntries; j++) {
            positions[i][j] = logger.addEntry(i, generateEntry(i, j));
        }// w w  w .j av  a  2s  . com
        logger.flush();
    }
    // delete last log id
    File lastLogId = new File(curDir, "lastId");
    lastLogId.delete();

    // write another entries
    for (int i = numLogs; i < 2 * numLogs; i++) {
        positions[i] = new long[numEntries];

        EntryLogger logger = new EntryLogger(conf, bookie.getLedgerDirsManager());
        for (int j = 0; j < numEntries; j++) {
            positions[i][j] = logger.addEntry(i, generateEntry(i, j));
        }
        logger.flush();
    }

    EntryLogger newLogger = new EntryLogger(conf, bookie.getLedgerDirsManager());
    for (int i = 0; i < (2 * numLogs + 1); i++) {
        File logFile = new File(curDir, Long.toHexString(i) + ".log");
        assertTrue(logFile.exists());
    }
    for (int i = 0; i < 2 * numLogs; i++) {
        for (int j = 0; j < numEntries; j++) {
            String expectedValue = "ledger-" + i + "-" + j;
            byte[] value = newLogger.readEntry(i, j, positions[i][j]);
            ByteBuffer buf = ByteBuffer.wrap(value);
            long ledgerId = buf.getLong();
            long entryId = buf.getLong();
            byte[] data = new byte[buf.remaining()];
            buf.get(data);
            assertEquals(i, ledgerId);
            assertEquals(j, entryId);
            assertEquals(expectedValue, new String(data));
        }
    }
}

From source file:com.yifanlu.PSXperiaTool.PSXperiaTool.java

private void patchGame() throws IOException {
    /*/* ww w. j  a va2s  . c o m*/
     * Custom patch format (config/game-patch.bin) is as follows:
     * 0x8 byte little endian: Address in game image to start patching
     * 0x8 byte little endian: Length of patch
     * If there are more patches, repeat after reading the length of patch
     * Note that all games will be patched the same way, so if a game is broken before patching, it will still be broken!
     */
    nextStep("Patching game.");
    File gamePatch = new File(mTempDir, "/config/game-patch.bin");
    if (!gamePatch.exists())
        return;
    Logger.info("Making a copy of game.");
    File tempGame = new File(mTempDir, "game.iso");
    FileUtils.copyFile(mInputFile, tempGame);
    RandomAccessFile game = new RandomAccessFile(tempGame, "rw");
    InputStream patch = new FileInputStream(gamePatch);
    while (true) {
        byte[] rawPatchAddr = new byte[8];
        byte[] rawPatchLen = new byte[8];
        if (patch.read(rawPatchAddr) + patch.read(rawPatchLen) < rawPatchAddr.length + rawPatchLen.length)
            break;
        ByteBuffer bb = ByteBuffer.wrap(rawPatchAddr);
        bb.order(ByteOrder.LITTLE_ENDIAN);
        long patchAddr = bb.getLong();
        bb = ByteBuffer.wrap(rawPatchLen);
        bb.order(ByteOrder.LITTLE_ENDIAN);
        long patchLen = bb.getLong();

        game.seek(patchAddr);
        while (patchLen-- > 0) {
            game.write(patch.read());
        }
    }
    mInputFile = tempGame;
    game.close();
    patch.close();
    Logger.debug("Done patching game.");
}

From source file:com.sm.store.utils.FileStore.java

private void reset() throws IOException {
    ByteBuffer buf = ByteBuffer.allocate(RECORD_SIZE);
    long pos = OFFSET + (long) (totalRecord - 1) * RECORD_SIZE;
    indexChannel.read(buf, pos);//from ww w  .  j  a va  2  s .com
    buf.rewind();
    byte status = buf.get();
    long keyLen = buf.getLong();
    byte[] keys = readChannel(keyLen, keyChannel);
    long data = buf.getLong();
    long block2version = buf.getLong();
    CacheBlock block = new CacheBlock(totalRecord, data, block2version, status);
    byte[] datas = readChannel(block.getDataOffset2Len(), dataChannel);

}

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();/*from  w ww  .j a  va2 s . co  m*/
    long key = bb.getLong();
    return pointQueryTemplate.replaceAll("\\$KEY\\$", Long.toString(key));
}

From source file:au.org.ala.layers.grid.GridCacheBuilder.java

static void nextRowOfFloats(float[] row, String datatype, boolean byteOrderLSB, int ncols, RandomAccessFile raf,
        byte[] b, float noDataValue) throws IOException {
    int size = 4;
    if (datatype.charAt(0) == 'U') {
        size = 1;//w  w w.j  av  a2  s  .  c  om
    } else if (datatype.charAt(0) == 'B') {
        size = 1;
    } else if (datatype.charAt(0) == 'S') {
        size = 2;
    } else if (datatype.charAt(0) == 'I') {
        size = 4;
    } else if (datatype.charAt(0) == 'L') {
        size = 8;
    } else if (datatype.charAt(0) == 'F') {
        size = 4;
    } else if (datatype.charAt(0) == 'D') {
        size = 8;
    }

    raf.read(b, 0, size * ncols);
    ByteBuffer bb = ByteBuffer.wrap(b);
    if (byteOrderLSB) {
        bb.order(ByteOrder.LITTLE_ENDIAN);
    } else {
        bb.order(ByteOrder.BIG_ENDIAN);
    }

    int i;
    int length = ncols;
    if (datatype.charAt(0) == 'U') {
        for (i = 0; i < length; i++) {
            float ret = bb.get();
            if (ret < 0) {
                ret += 256;
            }
            row[i] = ret;
        }
    } else if (datatype.charAt(0) == 'B') {

        for (i = 0; i < length; i++) {
            row[i] = (float) bb.get();
        }
    } else if (datatype.charAt(0) == 'S') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getShort();
        }
    } else if (datatype.charAt(0) == 'I') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getInt();
        }
    } else if (datatype.charAt(0) == 'L') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getLong();
        }
    } else if (datatype.charAt(0) == 'F') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getFloat();
        }
    } else if (datatype.charAt(0) == 'D') {
        for (i = 0; i < length; i++) {
            row[i] = (float) bb.getDouble();
        }
    } else {
        logger.info("UNKNOWN TYPE: " + datatype);
    }

    for (i = 0; i < length; i++) {
        if (row[i] == noDataValue) {
            row[i] = Float.NaN;
        }
    }
}

From source file:com.sm.store.client.RemoteClientImpl.java

@Override
public long getSeqNo(Key key) {
    StoreParas paras = getSequence(OpType.GetSeqNo, key);
    ByteBuffer buf = ByteBuffer.wrap((byte[]) paras.getValue().getData());
    return buf.getLong();
}

From source file:com.sm.store.client.RemoteClientImpl.java

@Override
public long getSeqNoBlock(Key key, int block) {
    StoreParas paras = getSequence(OpType.GetSeqNoBlock, key, block);
    ByteBuffer buf = ByteBuffer.wrap((byte[]) paras.getValue().getData());
    return buf.getLong();
}

From source file:com.alibaba.jstorm.utils.JStormUtils.java

public static long bytesToLong(byte[] bytes) {
    ByteBuffer buffer = ByteBuffer.allocate(Long.SIZE);
    buffer.put(bytes);//from w w w  .jav  a  2s.c o m
    buffer.flip();// need flip
    return buffer.getLong();
}