private static void findSources(
PlanNode node, Builder<PlanNode> builder, PlanNodeId partitionedSource) {
for (PlanNode source : node.getSources()) {
findSources(source, builder, partitionedSource);
}
if (node.getSources().isEmpty() || node.getId().equals(partitionedSource)) {
builder.add(node);
}
}
@JsonCreator
public PlanFragment(
@JsonProperty("id") PlanFragmentId id,
@JsonProperty("root") PlanNode root,
@JsonProperty("symbols") Map<Symbol, Type> symbols,
@JsonProperty("distribution") PlanDistribution distribution,
@JsonProperty("partitionedSource") PlanNodeId partitionedSource,
@JsonProperty("outputPartitioning") OutputPartitioning outputPartitioning) {
this.id = checkNotNull(id, "id is null");
this.root = checkNotNull(root, "root is null");
this.symbols = checkNotNull(symbols, "symbols is null");
this.distribution = checkNotNull(distribution, "distribution is null");
this.partitionedSource = partitionedSource;
tupleInfos =
IterableTransformer.on(root.getOutputSymbols())
.transform(Functions.forMap(symbols))
.transform(Type.toRaw())
.transform(
new Function<TupleInfo.Type, TupleInfo>() {
@Override
public TupleInfo apply(TupleInfo.Type input) {
return new TupleInfo(input);
}
})
.list();
ImmutableList.Builder<PlanNode> sources = ImmutableList.builder();
findSources(root, sources, partitionedSource);
this.sources = sources.build();
ImmutableSet.Builder<PlanNodeId> sourceIds = ImmutableSet.builder();
for (PlanNode source : this.sources) {
sourceIds.add(source.getId());
}
if (partitionedSource != null) {
sourceIds.add(partitionedSource);
}
this.sourceIds = sourceIds.build();
this.outputPartitioning = checkNotNull(outputPartitioning, "outputPartitioning is null");
}