org.bytedeco.arrow_dataset

Class DirectoryPartitioning

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.arrow_dataset.Partitioning

org.bytedeco.arrow_dataset.KeyValuePartitioning

org.bytedeco.arrow_dataset.DirectoryPartitioning

All Implemented Interfaces:

AutoCloseable

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

\brief DirectoryPartitioning parses one segment of a path for each field in its schema. All fields are required, so paths passed to DirectoryPartitioning::Parse must contain segments for each field. For example given schema the path "/2009/11" would be parsed to ("year"_ == 2009 and "month"_ == 11)

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.arrow_dataset.KeyValuePartitioning

KeyValuePartitioning.Key

Nested classes/interfaces inherited from class org.bytedeco.arrow_dataset.Partitioning

Partitioning.PartitionedBatches

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
DirectoryPartitioning(Pointer p) Pointer cast constructor.
DirectoryPartitioning(Schema schema)
DirectoryPartitioning(Schema schema, ArrayVector dictionaries, KeyValuePartitioningOptions options) If a field in schema is of dictionary type, the corresponding element of dictionaries must be contain the dictionary of values for that field.

Method Summary

Modifier and Type	Method and Description
static PartitioningFactory	MakeFactory(StringVector field_names)
static PartitioningFactory	MakeFactory(StringVector field_names, PartitioningFactoryOptions arg1) \brief Create a factory for a directory partitioning.
String	type_name() \brief The name identifying the kind of partitioning

Methods inherited from class org.bytedeco.arrow_dataset.KeyValuePartitioning

dictionaries, Format, Parse, Parse, Partition

Methods inherited from class org.bytedeco.arrow_dataset.Partitioning

Default, schema

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, getDirectBufferAddress, getPointer, getPointer, getPointer, getPointer, hashCode, interruptDeallocatorThread, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetAddress, offsetof, offsetof, parseBytes, physicalBytes, physicalBytesInaccurate, position, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, sizeof, toString, totalBytes, totalCount, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

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

Constructor Detail

DirectoryPartitioning

public DirectoryPartitioning(Pointer p)

Pointer cast constructor. Invokes Pointer(Pointer).

DirectoryPartitioning

public DirectoryPartitioning(@SharedPtr @ByVal
                             Schema schema,
                             @ByVal(nullValue="arrow::ArrayVector{}")
                             ArrayVector dictionaries,
                             @ByVal(nullValue="arrow::dataset::KeyValuePartitioningOptions{}")
                             KeyValuePartitioningOptions options)

If a field in schema is of dictionary type, the corresponding element of dictionaries must be contain the dictionary of values for that field.

DirectoryPartitioning

public DirectoryPartitioning(@SharedPtr @ByVal
                             Schema schema)

Method Detail

type_name

@StdString
public String type_name()

Description copied from class: Partitioning

\brief The name identifying the kind of partitioning

Overrides:

type_name in class Partitioning

MakeFactory

@SharedPtr
public static PartitioningFactory MakeFactory(@ByVal
                                                          StringVector field_names,
                                                          @ByVal(nullValue="arrow::dataset::PartitioningFactoryOptions{}")
                                                          PartitioningFactoryOptions arg1)

\brief Create a factory for a directory partitioning.

Parameters:

field_names - [in] The names for the partition fields. Types will be inferred.

MakeFactory

@SharedPtr
public static PartitioningFactory MakeFactory(@ByVal
                                                          StringVector field_names)