/* * Copyright (C) 2017-2019 Dremio Corporation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.dremio.exec.planner.common; import org.apache.calcite.plan.RelOptCluster; import org.apache.calcite.plan.RelTraitSet; import org.apache.calcite.rel.RelCollation; import org.apache.calcite.rel.RelNode; import org.apache.calcite.rel.core.Sort; import org.apache.calcite.rex.RexNode; /** * * Base class for logical and physical Sort implemented in Dremio */ public abstract class SortRelBase extends Sort { /** Creates a SortRel with offset and fetch. */ protected SortRelBase(RelOptCluster cluster, RelTraitSet traits, RelNode input, RelCollation collation, RexNode offset, RexNode fetch) { super(cluster, traits, input, collation, null, null); // Dremio does not support offset and fetch assert offset == null : "offset is not supported"; assert fetch == null: "fetch is not supported"; } protected static RelTraitSet adjustTraits(RelTraitSet traits, RelCollation collation) { return traits.plus(collation); } }