/* * 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.solr.handler.sql; import org.apache.calcite.adapter.enumerable.EnumerableConvention; import org.apache.calcite.plan.RelTraitSet; import org.apache.calcite.rel.RelNode; import org.apache.calcite.rel.convert.ConverterRule; /** * Rule to convert a relational expression from {@link SolrRel#CONVENTION} to {@link EnumerableConvention}. */ class SolrToEnumerableConverterRule extends ConverterRule { static final ConverterRule INSTANCE = new SolrToEnumerableConverterRule(); private SolrToEnumerableConverterRule() { super(RelNode.class, SolrRel.CONVENTION, EnumerableConvention.INSTANCE, "SolrToEnumerableConverterRule"); } @Override public RelNode convert(RelNode rel) { RelTraitSet newTraitSet = rel.getTraitSet().replace(getOutConvention()); return new SolrToEnumerableConverter(rel.getCluster(), newTraitSet, rel); } }