Example usage for org.apache.mahout.cf.taste.hadoop RecommendedItemsWritable getRecommendedItems

Introduction

In this page you can find the example usage for org.apache.mahout.cf.taste.hadoop RecommendedItemsWritable getRecommendedItems.

Prototype

public List<RecommendedItem> getRecommendedItems() 

Source Link

Usage

From source file:nl.gridline.zieook.inx.movielens.hbase.UserRecommendationsStoreMap.java

License:Apache License

protected void map(VarLongWritable key, RecommendedItemsWritable value, Context context)
        throws IOException, InterruptedException {
    // <UserId, [item,value]>
    // the in the recommendations are already sorted! - this makes writing them easy

    List<RecommendedItem> recommendations = value.getRecommendedItems();
    int rank = 1;
    Put put = new Put(RowKeys.getRecommendationKey(collection, recommender, key.get()));
    for (RecommendedItem el : recommendations) {
        byte[] data = nl.gridline.zieook.model.Recommend.getRecommendation(el.getItemID(), rank, el.getValue());
        put.add(RECOMMENDATION_COLUMN, Bytes.toBytes(rank), data);
        rank++;/*  w  w  w .j  ava  2s  . c  om*/
    }
    context.write(new LongWritable(key.get()), put);

}

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