org.apache.hadoop.hive.ql.optimizer.calcite.TraitsUtil Maven / Gradle / Ivy
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package org.apache.hadoop.hive.ql.optimizer.calcite;
import org.apache.calcite.plan.RelOptCluster;
import org.apache.calcite.plan.RelTraitSet;
import org.apache.calcite.rel.RelCollation;
import org.apache.calcite.rel.RelCollations;
import org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveRelNode;
public class TraitsUtil {
public static RelTraitSet getSortTraitSet(RelOptCluster cluster, RelTraitSet traitSet,
RelCollation collation) {
return traitSet.plus(collation);
}
public static RelTraitSet getDefaultTraitSet(RelOptCluster cluster) {
return cluster.traitSetOf(HiveRelNode.CONVENTION, RelCollations.EMPTY);
}
public static RelTraitSet getDefaultTraitSet(RelOptCluster cluster, RelTraitSet traitsFromInput) {
return RelTraitSet.createEmpty().merge(traitsFromInput).merge(getDefaultTraitSet(cluster));
}
}