milvus/internal/storage/cwrapper/ParquetWrapper.h

// Copyright (C) 2019-2020 Zilliz. All rights reserved.
//
// Licensed 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

#ifdef __cplusplus
extern "C" {
#endif

#include <stdint.h>
#include <stdbool.h>

typedef void *CPayloadWriter;

typedef struct CBuffer {
  char *data;
  int length;
} CBuffer;

typedef struct CStatus {
  int error_code;
  const char *error_msg;
} CStatus;

CPayloadWriter NewPayloadWriter(int columnType);
CStatus AddBooleanToPayload(CPayloadWriter payloadWriter, bool *values, int length);
CStatus AddInt8ToPayload(CPayloadWriter payloadWriter, int8_t *values, int length);
CStatus AddInt16ToPayload(CPayloadWriter payloadWriter, int16_t *values, int length);
CStatus AddInt32ToPayload(CPayloadWriter payloadWriter, int32_t *values, int length);
CStatus AddInt64ToPayload(CPayloadWriter payloadWriter, int64_t *values, int length);
CStatus AddFloatToPayload(CPayloadWriter payloadWriter, float *values, int length);
CStatus AddDoubleToPayload(CPayloadWriter payloadWriter, double *values, int length);
CStatus AddOneStringToPayload(CPayloadWriter payloadWriter, char *cstr, int str_size);
CStatus AddBinaryVectorToPayload(CPayloadWriter payloadWriter, uint8_t *values, int dimension, int length);
CStatus AddFloatVectorToPayload(CPayloadWriter payloadWriter, float *values, int dimension, int length);

CStatus FinishPayloadWriter(CPayloadWriter payloadWriter);
CBuffer GetPayloadBufferFromWriter(CPayloadWriter payloadWriter);
int GetPayloadLengthFromWriter(CPayloadWriter payloadWriter);
CStatus ReleasePayloadWriter(CPayloadWriter handler);

//============= payload reader ======================

typedef void *CPayloadReader;
CPayloadReader NewPayloadReader(int columnType, uint8_t *buffer, int64_t buf_size);
CStatus GetBoolFromPayload(CPayloadReader payloadReader, bool **values, int *length);
CStatus GetInt8FromPayload(CPayloadReader payloadReader, int8_t **values, int *length);
CStatus GetInt16FromPayload(CPayloadReader payloadReader, int16_t **values, int *length);
CStatus GetInt32FromPayload(CPayloadReader payloadReader, int32_t **values, int *length);
CStatus GetInt64FromPayload(CPayloadReader payloadReader, int64_t **values, int *length);
CStatus GetFloatFromPayload(CPayloadReader payloadReader, float **values, int *length);
CStatus GetDoubleFromPayload(CPayloadReader payloadReader, double **values, int *length);
CStatus GetOneStringFromPayload(CPayloadReader payloadReader, int idx, char **cstr, int *str_size);
CStatus GetBinaryVectorFromPayload(CPayloadReader payloadReader, uint8_t **values, int *dimension, int *length);
CStatus GetFloatVectorFromPayload(CPayloadReader payloadReader, float **values, int *dimension, int *length);

int GetPayloadLengthFromReader(CPayloadReader payloadReader);
CStatus ReleasePayloadReader(CPayloadReader payloadReader);

#ifdef __cplusplus
}
#endif