Example usage for org.apache.mahout.math Varint writeSignedVarLong

Introduction

In this page you can find the example usage for org.apache.mahout.math Varint writeSignedVarLong.

Prototype

public static void writeSignedVarLong(long value, DataOutput out) throws IOException 

Source Link

Document

Encodes a value using the variable-length encoding from <a href="http://code.google.com/apis/protocolbuffers/docs/encoding.html"> Google Protocol Buffers</a>.

Usage

From source file:org.gpfvic.mahout.cf.taste.hadoop.EntityEntityWritable.java

License:Apache License

@Override
public void write(DataOutput out) throws IOException {
    Varint.writeSignedVarLong(aID, out);
    Varint.writeSignedVarLong(bID, out);
}

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From source file:org.gpfvic.mahout.cf.taste.hadoop.item.VectorAndPrefsWritable.java

License:Apache License

@Override
public void write(DataOutput out) throws IOException {
    VectorWritable vw = new VectorWritable(vector);
    vw.setWritesLaxPrecision(true);//  w  w  w  .ja  v  a  2s . c o m
    vw.write(out);
    Varint.writeUnsignedVarInt(userIDs.size(), out);
    for (int i = 0; i < userIDs.size(); i++) {
        Varint.writeSignedVarLong(userIDs.get(i), out);
        out.writeFloat(values.get(i));
    }
}

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From source file:org.gpfvic.mahout.cf.taste.hadoop.item.VectorOrPrefWritable.java

License:Apache License

@Override
public void write(DataOutput out) throws IOException {
    if (vector == null) {
        out.writeBoolean(false);/*from  w  ww.j  av  a 2  s  . co  m*/
        Varint.writeSignedVarLong(userID, out);
        out.writeFloat(value);
    } else {
        out.writeBoolean(true);
        VectorWritable vw = new VectorWritable(vector);
        vw.setWritesLaxPrecision(true);
        vw.write(out);
    }
}

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From source file:org.gpfvic.mahout.cf.taste.hadoop.RecommendedItemsWritable.java

License:Apache License

@Override
public void write(DataOutput out) throws IOException {
    out.writeInt(recommended.size());//from   w  ww.j a  va 2s.  c o m
    for (RecommendedItem item : recommended) {
        Varint.writeSignedVarLong(item.getItemID(), out);
        out.writeFloat(item.getValue());
    }
}

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