// 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.

#pragma once

#include "format_v2/expr/cast.h"

namespace doris::format {

// File-to-table conversions own external schema evolution validation; SQL casts do not.

class EvolutionCast final : public Cast {

    ENABLE_FACTORY_CREATOR(EvolutionCast);

public:

    explicit EvolutionCast(const DataTypePtr& type, bool truncate_datetimev2_precision = false,

                           bool strict = false)

            : Cast(type),

              _truncate_datetimev2_precision(truncate_datetimev2_precision),

              _strict(strict) {}

    Status execute_column_impl(VExprContext* context, const Block* block, const Selector* selector,

                               size_t count, ColumnPtr& result_column) const override;

    std::string debug_string() const override;

    Status clone_node(VExprSPtr* cloned_expr) const override {

        DORIS_CHECK(cloned_expr != nullptr);

        *cloned_expr =

                EvolutionCast::create_shared(_data_type, _truncate_datetimev2_precision, _strict);

        return Status::OK();

    }

protected:

    void configure_cast_options(CastOptions& options) const override;

private:

    bool _truncate_datetimev2_precision = false;

    // Fail on every value the target type cannot hold, whatever the session's strict cast mode.

    // Iceberg equality deletes compare keys after a widening cast, where a non-strict overflow

    // would turn a key into NULL and match NULL tombstones: a data key TIMESTAMP 1600-01-01 cast

    // to TIMESTAMP_NS would become NULL and be deleted by a NULL tombstone.

    bool _strict = false;

};

} // namespace doris::format