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/*
 * Copyright 2021 Hazelcast Inc.
 *
 * Licensed under the Hazelcast Community License (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://hazelcast.com/hazelcast-community-license
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hazelcast.jet.sql.impl.opt.logical;

import com.hazelcast.jet.sql.impl.opt.OptUtils;
import com.hazelcast.org.apache.calcite.plan.Convention;
import com.hazelcast.org.apache.calcite.plan.RelOptRule;
import com.hazelcast.org.apache.calcite.rel.RelNode;
import com.hazelcast.org.apache.calcite.rel.convert.ConverterRule;
import com.hazelcast.org.apache.calcite.rel.core.TableModify;
import com.hazelcast.org.apache.calcite.rel.logical.LogicalTableModify;

import static com.hazelcast.jet.sql.impl.opt.Conventions.LOGICAL;

public final class DeleteLogicalRule extends ConverterRule {

    static final RelOptRule INSTANCE = new DeleteLogicalRule();

    private DeleteLogicalRule() {
        super(
                LogicalTableModify.class, TableModify::isDelete, Convention.NONE, LOGICAL,
                DeleteLogicalRule.class.getSimpleName()
        );
    }

    @Override
    public RelNode convert(RelNode rel) {
        LogicalTableModify delete = (LogicalTableModify) rel;

        return new DeleteLogicalRel(
                delete.getCluster(),
                OptUtils.toLogicalConvention(delete.getTraitSet()),
                delete.getTable(),
                delete.getCatalogReader(),
                OptUtils.toLogicalInput(delete.getInput()),
                delete.isFlattened()
        );
    }
}