@Override
public void addInput(Page page) {
checkNotNull(page, "page is null");
checkState(!isFinished(), "Operator is already finished");
Block sourceBlock = page.getBlock(setChannel);
channelSetBuilder.addBlock(sourceBlock);
}
@Override
public void finish() {
if (finished) {
return;
}
ChannelSet channelSet = channelSetBuilder.build();
setSupplier.setChannelSet(channelSet);
operatorContext.recordGeneratedOutput(channelSet.getEstimatedSize(), channelSet.size());
finished = true;
}