@Override
public void map(
Object key, Text value, OutputCollector<IntWritable, Text> output, Reporter reporter)
throws IOException {
String[] tokens = Recommend.DELIMITER.split(value.toString());
String userID = tokens[0];
int itemID = Integer.parseInt(tokens[1]);
String pref = tokens[2];
k.set(itemID);
v.set(userID + ":" + pref);
output.collect(k, v);
}
@Override
public void map(
LongWritable key, Text values, OutputCollector<Text, IntWritable> output, Reporter reporter)
throws IOException {
String[] tokens = Recommend.DELIMITER.split(values.toString());
for (int i = 1; i < tokens.length; i++) {
String itemID = tokens[i].split(":")[0];
for (int j = 1; j < tokens.length; j++) {
String itemID2 = tokens[j].split(":")[0];
k.set(itemID + ":" + itemID2);
output.collect(k, v);
}
}
}
