Example usage for org.apache.mahout.math.hadoop.stochasticsvd SplitPartitionedWritable SplitPartitionedWritable

Introduction

In this page you can find the example usage for org.apache.mahout.math.hadoop.stochasticsvd SplitPartitionedWritable SplitPartitionedWritable.

Prototype

public SplitPartitionedWritable() 

Source Link

Usage

From source file:org.apache.hadoop.mapred.nativetask.testutil.BytesUtil.java

License:Apache License

private static Object newMahoutObject(byte[] seed, String className) {
    if (className.equals(VarIntWritable.class.getName())) {
        return new VarIntWritable(Bytes.toInt(seed));
    } else if (className.equals(VarLongWritable.class.getName())) {
        return new VarLongWritable(Bytes.toLong(seed));
    } else if (className.equals(TreeID.class.getName())) {
        TreeID treeID = new TreeID();
        treeID.set(Bytes.toLong(seed));//from   w w w.  j a  va 2s . c  om
        return treeID;
    } else if (className.equals(SplitPartitionedWritable.class.getName())) {
        SplitPartitionedWritable spWritable = new SplitPartitionedWritable();
        long taskItemOrdinal = Math.abs(Bytes.toLong(seed, 4));
        spWritable.setTaskItemOrdinal(taskItemOrdinal);
        return spWritable;
    } else if (className.equals(EntityEntityWritable.class.getName())) {
        EntityEntityWritable entityWritable = new EntityEntityWritable(Bytes.toLong(seed, 0),
                Bytes.toLong(seed, 8));
        return entityWritable;
    } else if (className.equals(Gram.class.getName())) {
        String ngram = Bytes.toStringBinary(seed);
        return new Gram(ngram, Gram.Type.NGRAM);
    } else if (className.equals(GramKey.class.getName())) {
        int primaryLength = r.nextInt(seed.length);
        Gram gram = new Gram(Bytes.toStringBinary(seed, 0, Math.max(primaryLength, 1)), Gram.Type.NGRAM);
        byte[] order = new byte[seed.length - primaryLength];
        System.arraycopy(seed, primaryLength, order, 0, order.length);
        return new GramKey(gram, order);
    } else if (className.equals(StringTuple.class.getName())) {
        int tupleSize = r.nextInt(4);
        StringTuple stringTuple = new StringTuple();
        for (int i = 0; i < tupleSize; i++) {
            int index = r.nextInt(seed.length);
            stringTuple.add(Bytes.toStringBinary(seed, index, seed.length - index));
        }
        return stringTuple;
    } else {
        return null;
    }
}

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