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SQL Parser and Optimizer
There is a newer version: 5.4.0
/*
 * Copyright (c) 2008-2020, Hazelcast, Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in com.hazelcast.com.liance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.com.hazelcast.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.hazelcast.com.hazelcast.sql.impl.calcite;

import com.hazelcast.com.hazelcast.sql.impl.calcite.parse.QueryParseResult;
import com.hazelcast.com.hazelcast.sql.impl.calcite.validate.types.HazelcastTypeFactory;
import com.hazelcast.com.hazelcast.sql.impl.optimizer.OptimizationTask;
import com.hazelcast.com.hazelcast.sql.impl.optimizer.SqlPlan;
import com.hazelcast.org.apache.calcite.plan.RelOptCluster;
import com.hazelcast.org.apache.calcite.plan.RelOptTable;
import com.hazelcast.org.apache.calcite.prepare.Prepare;
import com.hazelcast.org.apache.calcite.prepare.Prepare.CatalogReader;
import com.hazelcast.org.apache.calcite.sql.parser.SqlParserImplFactory;
import com.hazelcast.org.apache.calcite.sql.util.SqlVisitor;
import com.hazelcast.org.apache.calcite.sql.validate.SqlConformance;
import com.hazelcast.org.apache.calcite.sql.validate.SqlValidator;
import com.hazelcast.org.apache.calcite.sql2rel.SqlRexConvertletTable;
import com.hazelcast.org.apache.calcite.sql2rel.SqlToRelConverter;
import com.hazelcast.org.apache.calcite.sql2rel.SqlToRelConverter.Config;

/**
 * Provides various customization points for the optimization engine.
 */
public interface SqlBackend {

    SqlParserImplFactory parserFactory();

    SqlValidator validator(
        CatalogReader catalogReader,
        HazelcastTypeFactory typeFactory,
        SqlConformance conformance
    );

    SqlVisitor unsupportedOperationVisitor(
        CatalogReader catalogReader
    );

    SqlToRelConverter converter(
        RelOptTable.ViewExpander viewExpander,
        SqlValidator validator,
        Prepare.CatalogReader catalogReader,
        RelOptCluster cluster,
        SqlRexConvertletTable convertletTable,
        Config config
    );

    SqlPlan createPlan(
        OptimizationTask task,
        QueryParseResult parseResult,
        OptimizerContext context
    );
}