inheritable_metadata.h

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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.
 */
 
#pragma once
 
 
#include <cstdint>
#include <memory>
#include <string>
 
#include "iceberg/iceberg_export.h"
#include "iceberg/result.h"
#include "iceberg/type_fwd.h"
 
namespace iceberg {
 
class ICEBERG_EXPORT InheritableMetadata {
 public:
  virtual ~InheritableMetadata();
 
  virtual Status Apply(ManifestEntry& entry) = 0;
};
 
class ICEBERG_EXPORT BaseInheritableMetadata : public InheritableMetadata {
 public:
  BaseInheritableMetadata(int32_t spec_id, int64_t snapshot_id, int64_t sequence_number,
                          std::string manifest_location);
 
  Status Apply(ManifestEntry& entry) override;
 
  ~BaseInheritableMetadata() override;
 
 private:
  int32_t spec_id_;
  int64_t snapshot_id_;
  int64_t sequence_number_;
  std::string manifest_location_;
};
 
class ICEBERG_EXPORT EmptyInheritableMetadata : public InheritableMetadata {
 public:
  Status Apply(ManifestEntry& entry) override;
 
  ~EmptyInheritableMetadata() override;
};
 
class ICEBERG_EXPORT CopyInheritableMetadata : public InheritableMetadata {
 public:
  explicit CopyInheritableMetadata(int64_t snapshot_id);
 
  Status Apply(ManifestEntry& entry) override;
 
  ~CopyInheritableMetadata() override;
 
 private:
  int64_t snapshot_id_;
};
 
class ICEBERG_EXPORT InheritableMetadataFactory {
 public:
  static Result<std::unique_ptr<InheritableMetadata>> Empty();
 
  static Result<std::unique_ptr<InheritableMetadata>> FromManifest(
      const ManifestFile& manifest);
 
  static Result<std::unique_ptr<InheritableMetadata>> ForCopy(int64_t snapshot_id);
 
 private:
  InheritableMetadataFactory() = default;
};
 
}  // namespace iceberg