xgboost/src/data/arrow-cdi.h
Xiaochang Wu 613ec36c5a
Support building SimpleDMatrix from Arrow data format (#7512)
* Integrate with Arrow C data API.
* Support Arrow dataset.
* Support Arrow table.

Co-authored-by: Xiaochang Wu <xiaochang.wu@intel.com>
Co-authored-by: Jiaming Yuan <jm.yuan@outlook.com>
Co-authored-by: Zhang Zhang <zhang.zhang@intel.com>
2022-03-15 13:25:19 +08:00

67 lines
1.7 KiB
C++

/* 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>
#ifdef __cplusplus
extern "C" {
#endif
#define ARROW_FLAG_DICTIONARY_ORDERED 1
#define ARROW_FLAG_NULLABLE 2
#define ARROW_FLAG_MAP_KEYS_SORTED 4
struct ArrowSchema {
// Array type description
const char* format;
const char* name;
const char* metadata;
int64_t flags;
int64_t n_children;
struct ArrowSchema** children;
struct ArrowSchema* dictionary;
// Release callback
void (*release)(struct ArrowSchema*);
// Opaque producer-specific data
void* private_data;
};
struct ArrowArray {
// Array data description
int64_t length;
int64_t null_count;
int64_t offset;
int64_t n_buffers;
int64_t n_children;
const void** buffers;
struct ArrowArray** children;
struct ArrowArray* dictionary;
// Release callback
void (*release)(struct ArrowArray*);
// Opaque producer-specific data
void* private_data;
};
#ifdef __cplusplus
}
#endif