org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveRelNode Maven / Gradle / Ivy
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.ql.optimizer.calcite.reloperators;
import org.apache.calcite.plan.Convention;
import org.apache.calcite.rel.RelNode;
public interface HiveRelNode extends RelNode {
void implement(Implementor implementor);
/** Calling convention for relational operations that occur in Hive. */
final Convention CONVENTION = new Convention.Impl("HIVE", HiveRelNode.class);
class Implementor {
public void visitChild(int ordinal, RelNode input) {
assert ordinal == 0;
((HiveRelNode) input).implement(this);
}
}
}