/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.drill.exec.planner.logical;
import org.apache.drill.common.logical.data.LogicalOperator;
import org.apache.drill.exec.planner.common.DrillRelNode;
import org.apache.calcite.plan.Convention;
/**
* Relational expression that is implemented in Drill.
*/
public interface DrillRel extends DrillRelNode {
/** Calling convention for relational expressions that are "implemented" by
* generating Drill logical plans. */
public static final Convention DRILL_LOGICAL = new Convention.Impl("LOGICAL", DrillRel.class);
LogicalOperator implement(DrillImplementor implementor);
}