org.bytedeco.arrow_dataset

Class ParquetFileFormat

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.arrow_dataset.FileFormat

org.bytedeco.arrow_dataset.ParquetFileFormat

All Implemented Interfaces:

AutoCloseable

@Namespace(value="arrow::dataset")
 @Properties(inherit=arrow_dataset.class)
public class ParquetFileFormat
extends FileFormat

\brief A FileFormat implementation that reads from Parquet files

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
ParquetFileFormat() Default native constructor.
ParquetFileFormat(long size) Native array allocator.
ParquetFileFormat(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
SchemaResult	Inspect(FileSource source) \brief Return the schema of the file if possible.
BoolResult	IsSupported(FileSource source) \brief Indicate if the FileSource is supported/readable by this format.
FragmentResult	MakeFragment(FileSource source, ScanOptions options) \brief Open a fragment
ParquetFileFormat	position(long position)
ScanTaskIteratorResult	ScanFile(FileSource source, ScanOptions options, ScanContext context) \brief Open a file for scanning
String	type_name() \brief The name identifying the kind of file format

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ParquetFileFormat

public ParquetFileFormat()

Default native constructor.

ParquetFileFormat

public ParquetFileFormat(long size)

Native array allocator. Access with Pointer.position(long).

ParquetFileFormat

public ParquetFileFormat(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

Method Detail

position

public ParquetFileFormat position(long position)

Overrides:

position in class Pointer

type_name

@StdString
public String type_name()

Description copied from class: FileFormat

\brief The name identifying the kind of file format

Overrides:

type_name in class FileFormat

IsSupported

@ByVal
public BoolResult IsSupported(@Const @ByRef
                                     FileSource source)

Description copied from class: FileFormat

\brief Indicate if the FileSource is supported/readable by this format.

Overrides:

IsSupported in class FileFormat

Inspect

@ByVal
public SchemaResult Inspect(@Const @ByRef
                                   FileSource source)

\brief Return the schema of the file if possible.

Overrides:

Inspect in class FileFormat

ScanFile

@ByVal
public ScanTaskIteratorResult ScanFile(@Const @ByRef
                                              FileSource source,
                                              @SharedPtr
                                              ScanOptions options,
                                              @SharedPtr
                                              ScanContext context)

\brief Open a file for scanning

Overrides:

ScanFile in class FileFormat

MakeFragment

@ByVal
public FragmentResult MakeFragment(@Const @ByRef
                                          FileSource source,
                                          @SharedPtr
                                          ScanOptions options)

Description copied from class: FileFormat

\brief Open a fragment

Overrides:

MakeFragment in class FileFormat