| // 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. |
| |
| #ifndef PARQUET_HASHER_H |
| #define PARQUET_HASHER_H |
| |
| #include <cstdint> |
| #include "parquet/types.h" |
| |
| namespace parquet { |
| // Abstract class for hash |
| class Hasher { |
| public: |
| /// Compute hash for 32 bits value by using its plain encoding result. |
| /// |
| /// @param value the value to hash. |
| /// @return hash result. |
| virtual uint64_t Hash(int32_t value) const = 0; |
| |
| /// Compute hash for 64 bits value by using its plain encoding result. |
| /// |
| /// @param value the value to hash. |
| /// @return hash result. |
| virtual uint64_t Hash(int64_t value) const = 0; |
| |
| /// Compute hash for float value by using its plain encoding result. |
| /// |
| /// @param value the value to hash. |
| /// @return hash result. |
| virtual uint64_t Hash(float value) const = 0; |
| |
| /// Compute hash for double value by using its plain encoding result. |
| /// |
| /// @param value the value to hash. |
| /// @return hash result. |
| virtual uint64_t Hash(double value) const = 0; |
| |
| /// Compute hash for Int96 value by using its plain encoding result. |
| /// |
| /// @param value the value to hash. |
| /// @return hash result. |
| virtual uint64_t Hash(const Int96* value) const = 0; |
| |
| /// Compute hash for ByteArray value by using its plain encoding result. |
| /// |
| /// @param value the value to hash. |
| /// @return hash result. |
| virtual uint64_t Hash(const ByteArray* value) const = 0; |
| |
| /// Compute hash for fixed byte array value by using its plain encoding result. |
| /// |
| /// @param value the value to hash. |
| /// @return hash result. |
| virtual uint64_t Hash(const FLBA* value, uint32_t len) const = 0; |
| |
| virtual ~Hasher() = default; |
| }; |
| |
| } // namespace parquet |
| |
| #endif // PARQUET_HASHER_H |