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This module bridges Table/SQL API and runtime. It contains all resources that are required during pre-flight and runtime phase. The content of this module is work-in-progress. It will replace flink-table-planner once it is stable. See FLINK-11439 and FLIP-32 for more details.

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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,
 * 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.flink.table.planner.plan.schema;

import org.apache.flink.annotation.Internal;
import org.apache.flink.table.types.logical.RawType;

import org.apache.calcite.rel.type.RelDataType;
import org.apache.calcite.sql.type.AbstractSqlType;
import org.apache.calcite.sql.type.SqlTypeName;

/** The {@link RelDataType} representation of a {@link RawType}. */
@Internal
public final class RawRelDataType extends AbstractSqlType {

    private final RawType rawType;

    public RawRelDataType(RawType rawType) {
        super(SqlTypeName.OTHER, rawType.isNullable(), null);
        this.rawType = rawType;
        computeDigest();
    }

    public RawType getRawType() {
        return rawType;
    }

    public RawRelDataType createWithNullability(boolean nullable) {
        if (nullable == isNullable()) {
            return this;
        }
        return new RawRelDataType((RawType) rawType.copy(nullable));
    }

    @Override
    protected void generateTypeString(StringBuilder sb, boolean withDetail) {
        if (withDetail) {
            sb.append(rawType.asSerializableString());
        } else {
            sb.append(rawType.asSummaryString());
        }
    }

    @Override
    protected void computeDigest() {
        final StringBuilder sb = new StringBuilder();
        generateTypeString(sb, true);
        digest = sb.toString();
    }
}