org.bytedeco.arrow_dataset

Class UnionDatasetFactory

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.arrow_dataset.DatasetFactory

org.bytedeco.arrow_dataset.UnionDatasetFactory

All Implemented Interfaces:

AutoCloseable

@Namespace(value="arrow::dataset")
 @NoOffset
 @Properties(inherit=arrow_dataset.class)
public class UnionDatasetFactory
extends DatasetFactory

\}

\brief DatasetFactory provides a way to inspect/discover a Dataset's expected schema before materialization. \ingroup dataset-implementations

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
UnionDatasetFactory(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
DatasetFactory	factories() \brief Return the list of child DatasetFactory
DatasetResult	Finish(FinishOptions options) \brief Create a Dataset.
SchemaVectorResult	InspectSchemas(InspectOptions options) \brief Get the schemas of the Datasets.
static DatasetFactoryResult	Make(DatasetFactory factories)

Methods inherited from class org.bytedeco.arrow_dataset.DatasetFactory

Finish, Finish, Inspect, Inspect, root_partition, SetRootPartition

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

UnionDatasetFactory

public UnionDatasetFactory(Pointer p)

Pointer cast constructor. Invokes Pointer(Pointer).

Method Detail

Make

@ByVal
public static DatasetFactoryResult Make(@SharedPtr @StdVector
                                                DatasetFactory factories)

factories

@SharedPtr
 @StdVector
public DatasetFactory factories()

\brief Return the list of child DatasetFactory

InspectSchemas

@ByVal
public SchemaVectorResult InspectSchemas(@ByVal
                                                 InspectOptions options)

\brief Get the schemas of the Datasets. Instead of applying options globally, it applies at each child factory. This will not respect options.fragments exactly, but will respect the spirit of peeking the first fragments or all of them.

Overrides:

InspectSchemas in class DatasetFactory

Finish

@ByVal
public DatasetResult Finish(@ByVal
                                    FinishOptions options)

\brief Create a Dataset.

Overrides:

Finish in class DatasetFactory