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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.
*/
#include <arrow-glib/array.hpp>
#include <arrow-glib/chunked-array.hpp>
#include <arrow-glib/data-type.hpp>
#include <arrow-glib/type.hpp>
#include <arrow-glib/error.hpp>
#include <sstream>
G_BEGIN_DECLS
/**
* SECTION: chunked-array
* @short_description: Chunked array class
*
* #GArrowChunkedArray is a class for chunked array. Chunked array
* makes a list of #GArrowArrays one logical large array.
*/
typedef struct GArrowChunkedArrayPrivate_ {
std::shared_ptr<arrow::ChunkedArray> chunked_array;
} GArrowChunkedArrayPrivate;
enum {
PROP_0,
PROP_CHUNKED_ARRAY
};
G_DEFINE_TYPE_WITH_PRIVATE(GArrowChunkedArray,
garrow_chunked_array,
G_TYPE_OBJECT)
#define GARROW_CHUNKED_ARRAY_GET_PRIVATE(obj) \
static_cast<GArrowChunkedArrayPrivate *>( \
garrow_chunked_array_get_instance_private( \
GARROW_CHUNKED_ARRAY(obj)))
static void
garrow_chunked_array_finalize(GObject *object)
{
auto priv = GARROW_CHUNKED_ARRAY_GET_PRIVATE(object);
priv->chunked_array.~shared_ptr();
G_OBJECT_CLASS(garrow_chunked_array_parent_class)->finalize(object);
}
static void
garrow_chunked_array_set_property(GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
auto priv = GARROW_CHUNKED_ARRAY_GET_PRIVATE(object);
switch (prop_id) {
case PROP_CHUNKED_ARRAY:
priv->chunked_array =
*static_cast<std::shared_ptr<arrow::ChunkedArray> *>(g_value_get_pointer(value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
garrow_chunked_array_get_property(GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
garrow_chunked_array_init(GArrowChunkedArray *object)
{
auto priv = GARROW_CHUNKED_ARRAY_GET_PRIVATE(object);
new(&priv->chunked_array) std::shared_ptr<arrow::ChunkedArray>;
}
static void
garrow_chunked_array_class_init(GArrowChunkedArrayClass *klass)
{
GObjectClass *gobject_class;
GParamSpec *spec;
gobject_class = G_OBJECT_CLASS(klass);
gobject_class->finalize = garrow_chunked_array_finalize;
gobject_class->set_property = garrow_chunked_array_set_property;
gobject_class->get_property = garrow_chunked_array_get_property;
spec = g_param_spec_pointer("chunked-array",
"Chunked array",
"The raw std::shared<arrow::ChunkedArray> *",
static_cast<GParamFlags>(G_PARAM_WRITABLE |
G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property(gobject_class, PROP_CHUNKED_ARRAY, spec);
}
/**
* garrow_chunked_array_new:
* @chunks: (element-type GArrowArray): The array chunks.
*
* Returns: A newly created #GArrowChunkedArray.
*/
GArrowChunkedArray *
garrow_chunked_array_new(GList *chunks)
{
std::vector<std::shared_ptr<arrow::Array>> arrow_chunks;
for (GList *node = chunks; node; node = node->next) {
GArrowArray *chunk = GARROW_ARRAY(node->data);
arrow_chunks.push_back(garrow_array_get_raw(chunk));
}
auto arrow_chunked_array =
std::make_shared<arrow::ChunkedArray>(arrow_chunks);
return garrow_chunked_array_new_raw(&arrow_chunked_array);
}
/**
* garrow_chunked_array_equal:
* @chunked_array: A #GArrowChunkedArray.
* @other_chunked_array: A #GArrowChunkedArray to be compared.
*
* Returns: %TRUE if both of them have the same data, %FALSE
* otherwise.
*
* Since: 0.4.0
*/
gboolean
garrow_chunked_array_equal(GArrowChunkedArray *chunked_array,
GArrowChunkedArray *other_chunked_array)
{
const auto arrow_chunked_array = garrow_chunked_array_get_raw(chunked_array);
const auto arrow_other_chunked_array =
garrow_chunked_array_get_raw(other_chunked_array);
return arrow_chunked_array->Equals(arrow_other_chunked_array);
}
/**
* garrow_chunked_array_get_value_data_type:
* @chunked_array: A #GArrowChunkedArray.
*
* Returns: (transfer full): The #GArrowDataType of the value of
* the chunked array.
*
* Since: 0.9.0
*/
GArrowDataType *
garrow_chunked_array_get_value_data_type(GArrowChunkedArray *chunked_array)
{
auto arrow_chunked_array = garrow_chunked_array_get_raw(chunked_array);
auto arrow_type = arrow_chunked_array->type();
return garrow_data_type_new_raw(&arrow_type);
}
/**
* garrow_chunked_array_get_value_type:
* @chunked_array: A #GArrowChunkedArray.
*
* Returns: The #GArrowType of the value of the chunked array.
*
* Since: 0.9.0
*/
GArrowType
garrow_chunked_array_get_value_type(GArrowChunkedArray *chunked_array)
{
auto arrow_chunked_array = garrow_chunked_array_get_raw(chunked_array);
auto arrow_type = arrow_chunked_array->type();
return garrow_type_from_raw(arrow_type->id());
}
/**
* garrow_chunked_array_get_length:
* @chunked_array: A #GArrowChunkedArray.
*
* Returns: The total number of rows in the chunked array.
*
* Deprecated: 0.15.0: Use garrow_chunked_array_get_n_rows() instead.
*/
guint64
garrow_chunked_array_get_length(GArrowChunkedArray *chunked_array)
{
return garrow_chunked_array_get_n_rows(chunked_array);
}
/**
* garrow_chunked_array_get_n_rows:
* @chunked_array: A #GArrowChunkedArray.
*
* Returns: The total number of rows in the chunked array.
*
* Since: 0.15.0
*/
guint64
garrow_chunked_array_get_n_rows(GArrowChunkedArray *chunked_array)
{
const auto arrow_chunked_array = garrow_chunked_array_get_raw(chunked_array);
return arrow_chunked_array->length();
}
/**
* garrow_chunked_array_get_n_nulls:
* @chunked_array: A #GArrowChunkedArray.
*
* Returns: The total number of NULL in the chunked array.
*/
guint64
garrow_chunked_array_get_n_nulls(GArrowChunkedArray *chunked_array)
{
const auto arrow_chunked_array = garrow_chunked_array_get_raw(chunked_array);
return arrow_chunked_array->null_count();
}
/**
* garrow_chunked_array_get_n_chunks:
* @chunked_array: A #GArrowChunkedArray.
*
* Returns: The total number of chunks in the chunked array.
*/
guint
garrow_chunked_array_get_n_chunks(GArrowChunkedArray *chunked_array)
{
const auto arrow_chunked_array = garrow_chunked_array_get_raw(chunked_array);
return arrow_chunked_array->num_chunks();
}
/**
* garrow_chunked_array_get_chunk:
* @chunked_array: A #GArrowChunkedArray.
* @i: The index of the target chunk.
*
* Returns: (transfer full): The i-th chunk of the chunked array.
*/
GArrowArray *
garrow_chunked_array_get_chunk(GArrowChunkedArray *chunked_array,
guint i)
{
const auto arrow_chunked_array = garrow_chunked_array_get_raw(chunked_array);
auto arrow_chunk = arrow_chunked_array->chunk(i);
return garrow_array_new_raw(&arrow_chunk);
}
/**
* garrow_chunked_array_get_chunks:
* @chunked_array: A #GArrowChunkedArray.
*
* Returns: (element-type GArrowArray) (transfer full):
* The chunks in the chunked array.
*/
GList *
garrow_chunked_array_get_chunks(GArrowChunkedArray *chunked_array)
{
const auto arrow_chunked_array = garrow_chunked_array_get_raw(chunked_array);
GList *chunks = NULL;
for (auto arrow_chunk : arrow_chunked_array->chunks()) {
GArrowArray *chunk = garrow_array_new_raw(&arrow_chunk);
chunks = g_list_prepend(chunks, chunk);
}
return g_list_reverse(chunks);
}
/**
* garrow_chunked_array_slice:
* @chunked_array: A #GArrowChunkedArray.
* @offset: The offset of sub #GArrowChunkedArray.
* @length: The length of sub #GArrowChunkedArray.
*
* Returns: (transfer full): The sub #GArrowChunkedArray. It covers only from
* `offset` to `offset + length` range. The sub #GArrowChunkedArray shares
* values with the base #GArrowChunkedArray.
*/
GArrowChunkedArray *
garrow_chunked_array_slice(GArrowChunkedArray *chunked_array,
guint64 offset,
guint64 length)
{
const auto arrow_chunked_array = garrow_chunked_array_get_raw(chunked_array);
auto arrow_sub_chunked_array = arrow_chunked_array->Slice(offset, length);
return garrow_chunked_array_new_raw(&arrow_sub_chunked_array);
}
/**
* garrow_chunked_array_to_string:
* @chunked_array: A #GArrowChunkedArray.
* @error: (nullable): Return location for a #GError or %NULL.
*
* Returns: (nullable):
* The formatted chunked array content or %NULL on error.
*
* It should be freed with g_free() when no longer needed.
*
* Since: 0.11.0
*/
gchar *
garrow_chunked_array_to_string(GArrowChunkedArray *chunked_array, GError **error)
{
const auto arrow_chunked_array = garrow_chunked_array_get_raw(chunked_array);
return g_strdup(arrow_chunked_array->ToString().c_str());
}
/**
* garrow_chunked_array_combine:
* @chunked_array: A #GArrowChunkedArray.
* @error: (nullable): Return location for a #GError or %NULL.
*
* Returns: (nullable) (transfer full): The combined array that has
* all data in all chunks.
*
* Since: 4.0.0
*/
GArrowArray *
garrow_chunked_array_combine(GArrowChunkedArray *chunked_array, GError **error)
{
const auto arrow_chunked_array = garrow_chunked_array_get_raw(chunked_array);
auto arrow_combined_array = arrow::Concatenate(arrow_chunked_array->chunks());
if (garrow::check(error,
arrow_combined_array,
"[chunked-array][combine]")) {
return garrow_array_new_raw(&(*arrow_combined_array));
} else {
return NULL;
}
}
G_END_DECLS
GArrowChunkedArray *
garrow_chunked_array_new_raw(std::shared_ptr<arrow::ChunkedArray> *arrow_chunked_array)
{
auto chunked_array =
GARROW_CHUNKED_ARRAY(g_object_new(GARROW_TYPE_CHUNKED_ARRAY,
"chunked-array", arrow_chunked_array,
NULL));
return chunked_array;
}
std::shared_ptr<arrow::ChunkedArray>
garrow_chunked_array_get_raw(GArrowChunkedArray *chunked_array)
{
auto priv = GARROW_CHUNKED_ARRAY_GET_PRIVATE(chunked_array);
return priv->chunked_array;
}
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