@Override
public void map(
final NullWritable key,
final FaunusVertex value,
final Mapper<NullWritable, FaunusVertex, WritableComparable, LongWritable>.Context context)
throws IOException, InterruptedException {
if (this.isVertex) {
if (value.hasPaths()) {
this.map.incr(ElementPicker.getProperty(value, this.property), value.pathCount());
context.getCounter(Counters.PROPERTIES_COUNTED).increment(1l);
}
} else {
for (final Edge e : value.getEdges(Direction.OUT)) {
final FaunusEdge edge = (FaunusEdge) e;
if (edge.hasPaths()) {
this.map.incr(ElementPicker.getProperty(edge, this.property), edge.pathCount());
context.getCounter(Counters.PROPERTIES_COUNTED).increment(1l);
}
}
}
// protected against memory explosion
if (this.map.size() > Tokens.MAP_SPILL_OVER) {
this.dischargeMap(context);
}
this.outputs.write(Tokens.GRAPH, NullWritable.get(), value);
}
@Override
public void map(
final NullWritable key,
final FaunusVertex value,
final Mapper<NullWritable, FaunusVertex, NullWritable, FaunusVertex>.Context context)
throws IOException, InterruptedException {
long pathsFiltered = 0l;
if (this.isVertex) {
if (value.hasPaths()) {
final Iterator<List<MicroElement>> itty = value.getPaths().iterator();
while (itty.hasNext()) {
final List<MicroElement> path = itty.next();
this.set.clear();
this.set.addAll(path);
if (path.size() != this.set.size()) {
itty.remove();
pathsFiltered++;
}
}
}
} else {
for (final Edge e : value.getEdges(Direction.BOTH)) {
final FaunusEdge edge = (FaunusEdge) e;
if (edge.hasPaths()) {
final Iterator<List<MicroElement>> itty = edge.getPaths().iterator();
while (itty.hasNext()) {
final List<MicroElement> path = itty.next();
this.set.clear();
this.set.addAll(path);
if (path.size() != this.set.size()) {
itty.remove();
pathsFiltered++;
}
}
}
}
}
context.getCounter(Counters.PATHS_FILTERED).increment(pathsFiltered);
context.write(NullWritable.get(), value);
}