/**
 * 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.storm.sql.compiler;

import com.google.common.base.Function;
import com.google.common.collect.Lists;
import org.apache.calcite.jdbc.JavaTypeFactoryImpl;
import org.apache.calcite.rel.type.RelDataType;
import org.apache.calcite.rel.type.RelDataTypeField;
import org.apache.calcite.rel.type.RelDataTypeSystem;
import org.apache.calcite.rel.type.RelRecordType;
import org.apache.calcite.sql.type.JavaToSqlTypeConversionRules;
import org.apache.calcite.sql.type.SqlTypeName;

public class StormSqlTypeFactoryImpl extends JavaTypeFactoryImpl {

    public StormSqlTypeFactoryImpl() {
    }

    public StormSqlTypeFactoryImpl(RelDataTypeSystem typeSystem) {
        super(typeSystem);
    }

    @Override
    public RelDataType toSql(RelDataType type) {
        if (type instanceof JavaType) {
            JavaType javaType = (JavaType) type;
            SqlTypeName sqlTypeName = JavaToSqlTypeConversionRules.instance().lookup(javaType.getJavaClass());
            if (sqlTypeName == null) {
                sqlTypeName = SqlTypeName.ANY;
            }
            return createTypeWithNullability(createSqlType(sqlTypeName), type.isNullable());
        }
        return super.toSql(type);
    }
}
