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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 "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 address.
/// @param len the value length.
virtual uint64_t Hash(const FLBA* value, uint32_t len) const = 0;
virtual ~Hasher() = default;
};
} // namespace parquet
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