be/src/exprs/kudu-partition-expr-ir.cc

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//   http://www.apache.org/licenses/LICENSE-2.0
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#include "exprs/kudu-partition-expr.h"

#include <kudu/common/partial_row.h>

#include "exprs/scalar-expr-evaluator.h"

namespace impala {

void KuduPartitionExpr::SetKuduPartialRowAndPartitioner(
    ScalarExprEvaluator* eval, int fn_ctx_idx,
    kudu::KuduPartialRow** row, kudu::client::KuduPartitioner** partitioner) {
  DCHECK(row != nullptr);
  DCHECK(partitioner != nullptr);

  FunctionContext* fn_ctx = eval->fn_context(fn_ctx_idx);
  KuduPartitionExprCtx* ctx = reinterpret_cast<KuduPartitionExprCtx*>(
      fn_ctx->GetFunctionState(FunctionContext::THREAD_LOCAL));
  DCHECK(ctx != nullptr);

  kudu::KuduPartialRow* kudu_row = ctx->row.get();
  DCHECK(kudu_row != nullptr);

  kudu::client::KuduPartitioner* kudu_partitioner = ctx->partitioner.get();
  DCHECK(kudu_partitioner != nullptr);

  *row = kudu_row;
  *partitioner = kudu_partitioner;
}

IntVal GetKuduPartitionRow(kudu::client::KuduPartitioner* partitioner,
    kudu::KuduPartialRow* row){
  int32_t partition_id = -1;
  kudu::Status s = partitioner->PartitionRow(*row, &partition_id);
  // This can only fail if we fail to supply some of the partition cols, which would be a
  // bug in planning, so we can DCHECK.
  DCHECK(s.ok()) << "KuduPartitioner::PartitionRow failed on row = '"
      << row->ToString() << "': " << s.ToString();
  return IntVal(partition_id);
}

}