org.apache.arrow.vector

クラス VectorSchemaRoot

java.lang.Object

org.apache.arrow.vector.VectorSchemaRoot

すべての実装されたインタフェース:

AutoCloseable

public class VectorSchemaRoot
extends Object
implements AutoCloseable

Holder for a set of vectors to be loaded/unloaded

コンストラクタのサマリー

コンストラクタ

コンストラクタと説明
VectorSchemaRoot(FieldVector parent)
VectorSchemaRoot(Iterable<FieldVector> vectors)
VectorSchemaRoot(List<Field> fields, List<FieldVector> fieldVectors, int rowCount)
VectorSchemaRoot(Schema schema, List<FieldVector> fieldVectors, int rowCount)

メソッドのサマリー

修飾子とタイプ	メソッドと説明
void	allocateNew() Do an adaptive allocation of each vector for memory purposes.
void	clear() Release all the memory for each vector held in this root.
void	close()
String	contentToTSVString()
static VectorSchemaRoot	create(Schema schema, BufferAllocator allocator)
List<FieldVector>	getFieldVectors()
int	getRowCount()
Schema	getSchema()
FieldVector	getVector(String name)
static VectorSchemaRoot	of(FieldVector... vectors)
void	setRowCount(int rowCount) Set the row count of all the vectors in this container.

クラスから継承されたメソッド java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

コンストラクタの詳細

VectorSchemaRoot

public VectorSchemaRoot(Iterable<FieldVector> vectors)

VectorSchemaRoot

public VectorSchemaRoot(FieldVector parent)

VectorSchemaRoot

public VectorSchemaRoot(List<Field> fields,
                        List<FieldVector> fieldVectors,
                        int rowCount)

VectorSchemaRoot

public VectorSchemaRoot(Schema schema,
                        List<FieldVector> fieldVectors,
                        int rowCount)

メソッドの詳細

create

public static VectorSchemaRoot create(Schema schema,
                                      BufferAllocator allocator)

of

public static VectorSchemaRoot of(FieldVector... vectors)

allocateNew

public void allocateNew()

Do an adaptive allocation of each vector for memory purposes. Sizes will be based on previously defined initial allocation for each vector (and subsequent size learnings).

clear

public void clear()

Release all the memory for each vector held in this root. This DOES NOT remove vectors from the container.

getFieldVectors

public List<FieldVector> getFieldVectors()

getVector

public FieldVector getVector(String name)

getSchema

public Schema getSchema()

getRowCount

public int getRowCount()

setRowCount

public void setRowCount(int rowCount)

Set the row count of all the vectors in this container. Also sets the value count for each root level contained FieldVector.

パラメータ:

rowCount - Number of records.

close

public void close()

定義:

close インタフェース内 AutoCloseable

contentToTSVString

public String contentToTSVString()