How to use

prune

method

in

org.apache.carbondata.core.datamap.dev.expr.DataMapExprWrapper

@Override
public List<ExtendedBlocklet> prune(DataMapDistributable distributable,
  List<PartitionSpec> partitionsToPrune)
    throws IOException {
 List<ExtendedBlocklet> leftPrune = left.prune(distributable, partitionsToPrune);
 List<ExtendedBlocklet> rightPrune = right.prune(distributable, partitionsToPrune);
 Set<ExtendedBlocklet> andBlocklets = new HashSet<>();
 andBlocklets.addAll(leftPrune);
 andBlocklets.addAll(rightPrune);
 return new ArrayList<>(andBlocklets);
}

@Override
public List<ExtendedBlocklet> prune(List<Segment> segments, List<PartitionSpec> partitionsToPrune)
  throws IOException {
 List<ExtendedBlocklet> leftPrune = left.prune(segments, partitionsToPrune);
 List<ExtendedBlocklet> rightPrune = right.prune(segments, partitionsToPrune);
 List<ExtendedBlocklet> andBlocklets = new ArrayList<>();
 for (ExtendedBlocklet blocklet : leftPrune) {
  if (rightPrune.contains(blocklet)) {
   andBlocklets.add(blocklet);
  }
 }
 return andBlocklets;
}

@Override
public List<ExtendedBlocklet> prune(DataMapDistributable distributable,
  List<PartitionSpec> partitionsToPrune)
    throws IOException {
 List<ExtendedBlocklet> leftPrune = left.prune(distributable, partitionsToPrune);
 List<ExtendedBlocklet> rightPrune = right.prune(distributable, partitionsToPrune);
 List<ExtendedBlocklet> andBlocklets = new ArrayList<>();
 for (ExtendedBlocklet blocklet : leftPrune) {
  if (rightPrune.contains(blocklet)) {
   andBlocklets.add(blocklet);
  }
 }
 return andBlocklets;
}

@Override
public List<ExtendedBlocklet> prune(List<Segment> segments, List<PartitionSpec> partitionsToPrune)
  throws IOException {
 List<ExtendedBlocklet> leftPrune = left.prune(segments, partitionsToPrune);
 List<ExtendedBlocklet> rightPrune = right.prune(segments, partitionsToPrune);
 Set<ExtendedBlocklet> andBlocklets = new HashSet<>();
 andBlocklets.addAll(leftPrune);
 andBlocklets.addAll(rightPrune);
 return new ArrayList<>(andBlocklets);
}

for (int i = 0; i < distributables.size(); i++) {
 DataMapDistributable dataMapDistributable = distributables.get(i).getDistributable();
 prunnedBlocklets.addAll(datamap.prune(dataMapDistributable, null));

   resolver, segmentIds, cgDataMapExprWrapper, dataMapJob, partitionsToPrune);
} else {
 cgPrunedBlocklets = cgDataMapExprWrapper.prune(segmentIds, partitionsToPrune);