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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.
# distutils: language = c++
# cython: language_level = 3
from pyarrow.includes.common cimport *
from pyarrow.includes.libarrow cimport (CChunkedArray, CScalar, CSchema, CStatus,
CTable, CMemoryPool, CBuffer,
CKeyValueMetadata, CRandomAccessFile,
COutputStream, CCacheOptions,
TimeUnit, CRecordBatchReader)
from pyarrow.lib cimport _Weakrefable
cdef extern from "parquet/api/schema.h" namespace "parquet::schema" nogil:
cdef cppclass Node:
pass
cdef cppclass GroupNode(Node):
pass
cdef cppclass PrimitiveNode(Node):
pass
cdef cppclass ColumnPath:
c_string ToDotString()
vector[c_string] ToDotVector()
cdef extern from "parquet/api/schema.h" namespace "parquet" nogil:
enum ParquetType" parquet::Type::type":
ParquetType_BOOLEAN" parquet::Type::BOOLEAN"
ParquetType_INT32" parquet::Type::INT32"
ParquetType_INT64" parquet::Type::INT64"
ParquetType_INT96" parquet::Type::INT96"
ParquetType_FLOAT" parquet::Type::FLOAT"
ParquetType_DOUBLE" parquet::Type::DOUBLE"
ParquetType_BYTE_ARRAY" parquet::Type::BYTE_ARRAY"
ParquetType_FIXED_LEN_BYTE_ARRAY" parquet::Type::FIXED_LEN_BYTE_ARRAY"
enum ParquetLogicalTypeId" parquet::LogicalType::Type::type":
ParquetLogicalType_UNDEFINED" parquet::LogicalType::Type::UNDEFINED"
ParquetLogicalType_STRING" parquet::LogicalType::Type::STRING"
ParquetLogicalType_MAP" parquet::LogicalType::Type::MAP"
ParquetLogicalType_LIST" parquet::LogicalType::Type::LIST"
ParquetLogicalType_ENUM" parquet::LogicalType::Type::ENUM"
ParquetLogicalType_DECIMAL" parquet::LogicalType::Type::DECIMAL"
ParquetLogicalType_DATE" parquet::LogicalType::Type::DATE"
ParquetLogicalType_TIME" parquet::LogicalType::Type::TIME"
ParquetLogicalType_TIMESTAMP" parquet::LogicalType::Type::TIMESTAMP"
ParquetLogicalType_INT" parquet::LogicalType::Type::INT"
ParquetLogicalType_FLOAT16" parquet::LogicalType::Type::FLOAT16"
ParquetLogicalType_JSON" parquet::LogicalType::Type::JSON"
ParquetLogicalType_BSON" parquet::LogicalType::Type::BSON"
ParquetLogicalType_UUID" parquet::LogicalType::Type::UUID"
ParquetLogicalType_NONE" parquet::LogicalType::Type::NONE"
enum ParquetTimeUnit" parquet::LogicalType::TimeUnit::unit":
ParquetTimeUnit_UNKNOWN" parquet::LogicalType::TimeUnit::UNKNOWN"
ParquetTimeUnit_MILLIS" parquet::LogicalType::TimeUnit::MILLIS"
ParquetTimeUnit_MICROS" parquet::LogicalType::TimeUnit::MICROS"
ParquetTimeUnit_NANOS" parquet::LogicalType::TimeUnit::NANOS"
enum ParquetConvertedType" parquet::ConvertedType::type":
ParquetConvertedType_NONE" parquet::ConvertedType::NONE"
ParquetConvertedType_UTF8" parquet::ConvertedType::UTF8"
ParquetConvertedType_MAP" parquet::ConvertedType::MAP"
ParquetConvertedType_MAP_KEY_VALUE \
" parquet::ConvertedType::MAP_KEY_VALUE"
ParquetConvertedType_LIST" parquet::ConvertedType::LIST"
ParquetConvertedType_ENUM" parquet::ConvertedType::ENUM"
ParquetConvertedType_DECIMAL" parquet::ConvertedType::DECIMAL"
ParquetConvertedType_DATE" parquet::ConvertedType::DATE"
ParquetConvertedType_TIME_MILLIS" parquet::ConvertedType::TIME_MILLIS"
ParquetConvertedType_TIME_MICROS" parquet::ConvertedType::TIME_MICROS"
ParquetConvertedType_TIMESTAMP_MILLIS \
" parquet::ConvertedType::TIMESTAMP_MILLIS"
ParquetConvertedType_TIMESTAMP_MICROS \
" parquet::ConvertedType::TIMESTAMP_MICROS"
ParquetConvertedType_UINT_8" parquet::ConvertedType::UINT_8"
ParquetConvertedType_UINT_16" parquet::ConvertedType::UINT_16"
ParquetConvertedType_UINT_32" parquet::ConvertedType::UINT_32"
ParquetConvertedType_UINT_64" parquet::ConvertedType::UINT_64"
ParquetConvertedType_INT_8" parquet::ConvertedType::INT_8"
ParquetConvertedType_INT_16" parquet::ConvertedType::INT_16"
ParquetConvertedType_INT_32" parquet::ConvertedType::INT_32"
ParquetConvertedType_INT_64" parquet::ConvertedType::INT_64"
ParquetConvertedType_JSON" parquet::ConvertedType::JSON"
ParquetConvertedType_BSON" parquet::ConvertedType::BSON"
ParquetConvertedType_INTERVAL" parquet::ConvertedType::INTERVAL"
enum ParquetRepetition" parquet::Repetition::type":
ParquetRepetition_REQUIRED" parquet::REPETITION::REQUIRED"
ParquetRepetition_OPTIONAL" parquet::REPETITION::OPTIONAL"
ParquetRepetition_REPEATED" parquet::REPETITION::REPEATED"
enum ParquetEncoding" parquet::Encoding::type":
ParquetEncoding_PLAIN" parquet::Encoding::PLAIN"
ParquetEncoding_PLAIN_DICTIONARY" parquet::Encoding::PLAIN_DICTIONARY"
ParquetEncoding_RLE" parquet::Encoding::RLE"
ParquetEncoding_BIT_PACKED" parquet::Encoding::BIT_PACKED"
ParquetEncoding_DELTA_BINARY_PACKED \
" parquet::Encoding::DELTA_BINARY_PACKED"
ParquetEncoding_DELTA_LENGTH_BYTE_ARRAY \
" parquet::Encoding::DELTA_LENGTH_BYTE_ARRAY"
ParquetEncoding_DELTA_BYTE_ARRAY" parquet::Encoding::DELTA_BYTE_ARRAY"
ParquetEncoding_RLE_DICTIONARY" parquet::Encoding::RLE_DICTIONARY"
ParquetEncoding_BYTE_STREAM_SPLIT \
" parquet::Encoding::BYTE_STREAM_SPLIT"
enum ParquetCompression" parquet::Compression::type":
ParquetCompression_UNCOMPRESSED" parquet::Compression::UNCOMPRESSED"
ParquetCompression_SNAPPY" parquet::Compression::SNAPPY"
ParquetCompression_GZIP" parquet::Compression::GZIP"
ParquetCompression_LZO" parquet::Compression::LZO"
ParquetCompression_BROTLI" parquet::Compression::BROTLI"
ParquetCompression_LZ4" parquet::Compression::LZ4"
ParquetCompression_ZSTD" parquet::Compression::ZSTD"
enum ParquetVersion" parquet::ParquetVersion::type":
ParquetVersion_V1" parquet::ParquetVersion::PARQUET_1_0"
ParquetVersion_V2_4" parquet::ParquetVersion::PARQUET_2_4"
ParquetVersion_V2_6" parquet::ParquetVersion::PARQUET_2_6"
enum ParquetSortOrder" parquet::SortOrder::type":
ParquetSortOrder_SIGNED" parquet::SortOrder::SIGNED"
ParquetSortOrder_UNSIGNED" parquet::SortOrder::UNSIGNED"
ParquetSortOrder_UNKNOWN" parquet::SortOrder::UNKNOWN"
cdef cppclass CParquetLogicalType" parquet::LogicalType":
c_string ToString() const
c_string ToJSON() const
ParquetLogicalTypeId type() const
cdef cppclass CParquetDecimalType \
" parquet::DecimalLogicalType"(CParquetLogicalType):
int32_t precision() const
int32_t scale() const
cdef cppclass CParquetIntType \
" parquet::IntLogicalType"(CParquetLogicalType):
int bit_width() const
c_bool is_signed() const
cdef cppclass CParquetTimeType \
" parquet::TimeLogicalType"(CParquetLogicalType):
c_bool is_adjusted_to_utc() const
ParquetTimeUnit time_unit() const
cdef cppclass CParquetTimestampType \
" parquet::TimestampLogicalType"(CParquetLogicalType):
c_bool is_adjusted_to_utc() const
ParquetTimeUnit time_unit() const
cdef cppclass ColumnDescriptor" parquet::ColumnDescriptor":
c_bool Equals(const ColumnDescriptor& other)
shared_ptr[ColumnPath] path()
int16_t max_definition_level()
int16_t max_repetition_level()
ParquetType physical_type()
const shared_ptr[const CParquetLogicalType]& logical_type()
ParquetConvertedType converted_type()
const c_string& name()
int type_length()
int type_precision()
int type_scale()
cdef cppclass SchemaDescriptor:
const ColumnDescriptor* Column(int i)
shared_ptr[Node] schema()
GroupNode* group()
c_bool Equals(const SchemaDescriptor& other)
c_string ToString()
int num_columns()
cdef c_string FormatStatValue(ParquetType parquet_type, c_string val)
enum ParquetCipher" parquet::ParquetCipher::type":
ParquetCipher_AES_GCM_V1" parquet::ParquetCipher::AES_GCM_V1"
ParquetCipher_AES_GCM_CTR_V1" parquet::ParquetCipher::AES_GCM_CTR_V1"
struct AadMetadata:
c_string aad_prefix
c_string aad_file_unique
c_bool supply_aad_prefix
struct EncryptionAlgorithm:
ParquetCipher algorithm
AadMetadata aad
cdef extern from "parquet/api/reader.h" namespace "parquet" nogil:
cdef cppclass ColumnReader:
pass
cdef cppclass BoolReader(ColumnReader):
pass
cdef cppclass Int32Reader(ColumnReader):
pass
cdef cppclass Int64Reader(ColumnReader):
pass
cdef cppclass Int96Reader(ColumnReader):
pass
cdef cppclass FloatReader(ColumnReader):
pass
cdef cppclass DoubleReader(ColumnReader):
pass
cdef cppclass ByteArrayReader(ColumnReader):
pass
cdef cppclass RowGroupReader:
pass
cdef cppclass CEncodedStatistics" parquet::EncodedStatistics":
const c_string& max() const
const c_string& min() const
int64_t null_count
int64_t distinct_count
bint has_min
bint has_max
bint has_null_count
bint has_distinct_count
cdef cppclass ParquetByteArray" parquet::ByteArray":
uint32_t len
const uint8_t* ptr
cdef cppclass ParquetFLBA" parquet::FLBA":
const uint8_t* ptr
cdef cppclass CStatistics" parquet::Statistics":
int64_t null_count() const
int64_t distinct_count() const
int64_t num_values() const
bint HasMinMax()
bint HasNullCount()
bint HasDistinctCount()
c_bool Equals(const CStatistics&) const
void Reset()
c_string EncodeMin()
c_string EncodeMax()
CEncodedStatistics Encode()
void SetComparator()
ParquetType physical_type() const
const ColumnDescriptor* descr() const
cdef cppclass CBoolStatistics" parquet::BoolStatistics"(CStatistics):
c_bool min()
c_bool max()
cdef cppclass CInt32Statistics" parquet::Int32Statistics"(CStatistics):
int32_t min()
int32_t max()
cdef cppclass CInt64Statistics" parquet::Int64Statistics"(CStatistics):
int64_t min()
int64_t max()
cdef cppclass CFloatStatistics" parquet::FloatStatistics"(CStatistics):
float min()
float max()
cdef cppclass CDoubleStatistics" parquet::DoubleStatistics"(CStatistics):
double min()
double max()
cdef cppclass CByteArrayStatistics \
" parquet::ByteArrayStatistics"(CStatistics):
ParquetByteArray min()
ParquetByteArray max()
cdef cppclass CFLBAStatistics" parquet::FLBAStatistics"(CStatistics):
ParquetFLBA min()
ParquetFLBA max()
cdef cppclass CColumnCryptoMetaData" parquet::ColumnCryptoMetaData":
shared_ptr[ColumnPath] path_in_schema() const
c_bool encrypted_with_footer_key() const
const c_string& key_metadata() const
cdef cppclass ParquetIndexLocation" parquet::IndexLocation":
int64_t offset
int32_t length
cdef cppclass CColumnChunkMetaData" parquet::ColumnChunkMetaData":
int64_t file_offset() const
const c_string& file_path() const
c_bool is_metadata_set() const
ParquetType type() const
int64_t num_values() const
shared_ptr[ColumnPath] path_in_schema() const
bint is_stats_set() const
shared_ptr[CStatistics] statistics() const
ParquetCompression compression() const
const vector[ParquetEncoding]& encodings() const
c_bool Equals(const CColumnChunkMetaData&) const
int64_t has_dictionary_page() const
int64_t dictionary_page_offset() const
int64_t data_page_offset() const
int64_t index_page_offset() const
int64_t total_compressed_size() const
int64_t total_uncompressed_size() const
unique_ptr[CColumnCryptoMetaData] crypto_metadata() const
optional[ParquetIndexLocation] GetColumnIndexLocation() const
optional[ParquetIndexLocation] GetOffsetIndexLocation() const
shared_ptr[const CKeyValueMetadata] key_value_metadata() const
struct CSortingColumn" parquet::SortingColumn":
int column_idx
c_bool descending
c_bool nulls_first
cdef cppclass CRowGroupMetaData" parquet::RowGroupMetaData":
c_bool Equals(const CRowGroupMetaData&) const
int num_columns() const
int64_t num_rows() const
int64_t total_byte_size() const
vector[CSortingColumn] sorting_columns() const
unique_ptr[CColumnChunkMetaData] ColumnChunk(int i) const
cdef cppclass CFileMetaData" parquet::FileMetaData":
c_bool Equals(const CFileMetaData&) const
uint32_t size()
int num_columns()
int64_t num_rows()
int num_row_groups()
ParquetVersion version()
const c_string created_by()
int num_schema_elements()
void set_file_path(const c_string& path)
void AppendRowGroups(const CFileMetaData& other) except +
unique_ptr[CRowGroupMetaData] RowGroup(int i)
const SchemaDescriptor* schema()
shared_ptr[const CKeyValueMetadata] key_value_metadata() const
void WriteTo(COutputStream* dst) const
inline c_bool is_encryption_algorithm_set() const
inline EncryptionAlgorithm encryption_algorithm() const
inline const c_string& footer_signing_key_metadata() const
cdef shared_ptr[CFileMetaData] CFileMetaData_Make \
" parquet::FileMetaData::Make"(const void* serialized_metadata,
uint32_t* metadata_len)
cdef cppclass CReaderProperties" parquet::ReaderProperties":
c_bool is_buffered_stream_enabled() const
void enable_buffered_stream()
void disable_buffered_stream()
void set_buffer_size(int64_t buf_size)
int64_t buffer_size() const
void set_thrift_string_size_limit(int32_t size)
int32_t thrift_string_size_limit() const
void set_thrift_container_size_limit(int32_t size)
int32_t thrift_container_size_limit() const
void file_decryption_properties(shared_ptr[CFileDecryptionProperties]
decryption)
shared_ptr[CFileDecryptionProperties] file_decryption_properties() \
const
c_bool page_checksum_verification() const
void set_page_checksum_verification(c_bool check_crc)
CReaderProperties default_reader_properties()
cdef cppclass ArrowReaderProperties:
ArrowReaderProperties()
void set_read_dictionary(int column_index, c_bool read_dict)
c_bool read_dictionary()
void set_batch_size(int64_t batch_size)
int64_t batch_size()
void set_pre_buffer(c_bool pre_buffer)
c_bool pre_buffer() const
void set_cache_options(CCacheOptions options)
CCacheOptions cache_options() const
void set_coerce_int96_timestamp_unit(TimeUnit unit)
TimeUnit coerce_int96_timestamp_unit() const
ArrowReaderProperties default_arrow_reader_properties()
cdef cppclass ParquetFileReader:
shared_ptr[CFileMetaData] metadata()
cdef extern from "parquet/api/writer.h" namespace "parquet" nogil:
cdef cppclass WriterProperties:
cppclass Builder:
Builder* data_page_version(ParquetDataPageVersion version)
Builder* version(ParquetVersion version)
Builder* compression(ParquetCompression codec)
Builder* compression(const c_string& path,
ParquetCompression codec)
Builder* compression_level(int compression_level)
Builder* compression_level(const c_string& path,
int compression_level)
Builder* encryption(
shared_ptr[CFileEncryptionProperties]
file_encryption_properties)
Builder* disable_dictionary()
Builder* enable_dictionary()
Builder* enable_dictionary(const c_string& path)
Builder* set_sorting_columns(vector[CSortingColumn] sorting_columns)
Builder* disable_statistics()
Builder* enable_statistics()
Builder* enable_statistics(const c_string& path)
Builder* enable_store_decimal_as_integer()
Builder* disable_store_decimal_as_integer()
Builder* data_pagesize(int64_t size)
Builder* encoding(ParquetEncoding encoding)
Builder* encoding(const c_string& path,
ParquetEncoding encoding)
Builder* max_row_group_length(int64_t size)
Builder* write_batch_size(int64_t batch_size)
Builder* dictionary_pagesize_limit(int64_t dictionary_pagesize_limit)
Builder* enable_write_page_index()
Builder* disable_write_page_index()
Builder* enable_page_checksum()
Builder* disable_page_checksum()
shared_ptr[WriterProperties] build()
cdef cppclass ArrowWriterProperties:
cppclass Builder:
Builder()
Builder* disable_deprecated_int96_timestamps()
Builder* enable_deprecated_int96_timestamps()
Builder* coerce_timestamps(TimeUnit unit)
Builder* allow_truncated_timestamps()
Builder* disallow_truncated_timestamps()
Builder* store_schema()
Builder* enable_compliant_nested_types()
Builder* disable_compliant_nested_types()
Builder* set_engine_version(ArrowWriterEngineVersion version)
shared_ptr[ArrowWriterProperties] build()
c_bool support_deprecated_int96_timestamps()
cdef extern from "parquet/arrow/reader.h" namespace "parquet::arrow" nogil:
cdef cppclass FileReader:
FileReader(CMemoryPool* pool, unique_ptr[ParquetFileReader] reader)
CStatus GetSchema(shared_ptr[CSchema]* out)
CStatus ReadColumn(int i, shared_ptr[CChunkedArray]* out)
CStatus ReadSchemaField(int i, shared_ptr[CChunkedArray]* out)
int num_row_groups()
CStatus ReadRowGroup(int i, shared_ptr[CTable]* out)
CStatus ReadRowGroup(int i, const vector[int]& column_indices,
shared_ptr[CTable]* out)
CStatus ReadRowGroups(const vector[int]& row_groups,
shared_ptr[CTable]* out)
CStatus ReadRowGroups(const vector[int]& row_groups,
const vector[int]& column_indices,
shared_ptr[CTable]* out)
CResult[unique_ptr[CRecordBatchReader]] GetRecordBatchReader(const vector[int]& row_group_indices,
const vector[int]& column_indices)
CResult[unique_ptr[CRecordBatchReader]] GetRecordBatchReader(const vector[int]& row_group_indices)
CStatus ReadTable(shared_ptr[CTable]* out)
CStatus ReadTable(const vector[int]& column_indices,
shared_ptr[CTable]* out)
CStatus ScanContents(vector[int] columns, int32_t column_batch_size,
int64_t* num_rows)
const ParquetFileReader* parquet_reader()
void set_use_threads(c_bool use_threads)
void set_batch_size(int64_t batch_size)
cdef cppclass FileReaderBuilder:
FileReaderBuilder()
CStatus Open(const shared_ptr[CRandomAccessFile]& file,
const CReaderProperties& properties,
const shared_ptr[CFileMetaData]& metadata)
ParquetFileReader* raw_reader()
FileReaderBuilder* memory_pool(CMemoryPool*)
FileReaderBuilder* properties(const ArrowReaderProperties&)
CStatus Build(unique_ptr[FileReader]* out)
CStatus FromParquetSchema(
const SchemaDescriptor* parquet_schema,
const ArrowReaderProperties& properties,
const shared_ptr[const CKeyValueMetadata]& key_value_metadata,
shared_ptr[CSchema]* out)
CStatus StatisticsAsScalars(const CStatistics& Statistics,
shared_ptr[CScalar]* min,
shared_ptr[CScalar]* max)
cdef extern from "parquet/arrow/schema.h" namespace "parquet::arrow" nogil:
CStatus ToParquetSchema(
const CSchema* arrow_schema,
const WriterProperties& properties,
const ArrowWriterProperties& arrow_properties,
shared_ptr[SchemaDescriptor]* out)
cdef extern from "parquet/properties.h" namespace "parquet" nogil:
cdef enum ArrowWriterEngineVersion:
V1 "parquet::ArrowWriterProperties::V1",
V2 "parquet::ArrowWriterProperties::V2"
cdef cppclass ParquetDataPageVersion:
pass
cdef ParquetDataPageVersion ParquetDataPageVersion_V1 \
" parquet::ParquetDataPageVersion::V1"
cdef ParquetDataPageVersion ParquetDataPageVersion_V2 \
" parquet::ParquetDataPageVersion::V2"
cdef extern from "parquet/arrow/writer.h" namespace "parquet::arrow" nogil:
cdef cppclass FileWriter:
@staticmethod
CResult[unique_ptr[FileWriter]] Open(const CSchema& schema, CMemoryPool* pool,
const shared_ptr[COutputStream]& sink,
const shared_ptr[WriterProperties]& properties,
const shared_ptr[ArrowWriterProperties]& arrow_properties)
CStatus WriteTable(const CTable& table, int64_t chunk_size)
CStatus NewRowGroup()
CStatus Close()
CStatus AddKeyValueMetadata(const shared_ptr[const CKeyValueMetadata]& key_value_metadata)
const shared_ptr[CFileMetaData] metadata() const
CStatus WriteMetaDataFile(
const CFileMetaData& file_metadata,
const COutputStream* sink)
cdef class FileEncryptionProperties:
"""File-level encryption properties for the low-level API"""
cdef:
shared_ptr[CFileEncryptionProperties] properties
@staticmethod
cdef inline FileEncryptionProperties wrap(
shared_ptr[CFileEncryptionProperties] properties):
result = FileEncryptionProperties()
result.properties = properties
return result
cdef inline shared_ptr[CFileEncryptionProperties] unwrap(self):
return self.properties
cdef shared_ptr[WriterProperties] _create_writer_properties(
use_dictionary=*,
compression=*,
version=*,
write_statistics=*,
data_page_size=*,
compression_level=*,
use_byte_stream_split=*,
column_encoding=*,
data_page_version=*,
FileEncryptionProperties encryption_properties=*,
write_batch_size=*,
dictionary_pagesize_limit=*,
write_page_index=*,
write_page_checksum=*,
sorting_columns=*,
store_decimal_as_integer=*,
) except *
cdef shared_ptr[ArrowWriterProperties] _create_arrow_writer_properties(
use_deprecated_int96_timestamps=*,
coerce_timestamps=*,
allow_truncated_timestamps=*,
writer_engine_version=*,
use_compliant_nested_type=*,
store_schema=*,
) except *
cdef class ParquetSchema(_Weakrefable):
cdef:
FileMetaData parent # the FileMetaData owning the SchemaDescriptor
const SchemaDescriptor* schema
cdef class FileMetaData(_Weakrefable):
cdef:
shared_ptr[CFileMetaData] sp_metadata
CFileMetaData* _metadata
ParquetSchema _schema
cdef inline init(self, const shared_ptr[CFileMetaData]& metadata):
self.sp_metadata = metadata
self._metadata = metadata.get()
cdef class RowGroupMetaData(_Weakrefable):
cdef:
int index # for pickling support
unique_ptr[CRowGroupMetaData] up_metadata
CRowGroupMetaData* metadata
FileMetaData parent
cdef inline init(self, FileMetaData parent, int index):
if index < 0 or index >= parent.num_row_groups:
raise IndexError('{0} out of bounds'.format(index))
self.up_metadata = parent._metadata.RowGroup(index)
self.metadata = self.up_metadata.get()
self.parent = parent
self.index = index
cdef class ColumnChunkMetaData(_Weakrefable):
cdef:
unique_ptr[CColumnChunkMetaData] up_metadata
CColumnChunkMetaData* metadata
RowGroupMetaData parent
cdef inline init(self, RowGroupMetaData parent, int i):
self.up_metadata = parent.metadata.ColumnChunk(i)
self.metadata = self.up_metadata.get()
self.parent = parent
cdef class Statistics(_Weakrefable):
cdef:
shared_ptr[CStatistics] statistics
ColumnChunkMetaData parent
cdef inline init(self, const shared_ptr[CStatistics]& statistics,
ColumnChunkMetaData parent):
self.statistics = statistics
self.parent = parent
cdef extern from "parquet/encryption/encryption.h" namespace "parquet" nogil:
cdef cppclass CFileDecryptionProperties\
" parquet::FileDecryptionProperties":
pass
cdef cppclass CFileEncryptionProperties\
" parquet::FileEncryptionProperties":
pass
cdef class FileDecryptionProperties:
"""File-level decryption properties for the low-level API"""
cdef:
shared_ptr[CFileDecryptionProperties] properties
@staticmethod
cdef inline FileDecryptionProperties wrap(
shared_ptr[CFileDecryptionProperties] properties):
result = FileDecryptionProperties()
result.properties = properties
return result
cdef inline shared_ptr[CFileDecryptionProperties] unwrap(self):
return self.properties
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