org.apache.arrow.vector.types.pojo

クラス Field

java.lang.Object

org.apache.arrow.vector.types.pojo.Field

public class Field
extends Object

A POJO abstraction for the Flatbuffer description of Vector Type.

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
Field(String name, boolean nullable, ArrowType type, DictionaryEncoding dictionary, List<Field> children) 非推奨です。 Use FieldType or static constructor instead.
Field(String name, boolean nullable, ArrowType type, List<Field> children) 非推奨です。 Use FieldType or static constructor instead.
Field(String name, FieldType fieldType, List<Field> children)

メソッドのサマリー

修飾子とタイプ	メソッドと説明
static Field	convertField(Field field) Constructs a new instance from a flatbuffer representation of the field.
FieldVector	createVector(BufferAllocator allocator) Construct a new vector of this type using the given allocator.
boolean	equals(Object obj)
List<Field>	getChildren()
DictionaryEncoding	getDictionary()
int	getField(com.google.flatbuffers.FlatBufferBuilder builder) Puts this object into builder and returns the length of the serialized flatbuffer.
FieldType	getFieldType()
Map<String,String>	getMetadata()
String	getName()
ArrowType	getType()
int	hashCode()
boolean	isNullable()
static Field	nullable(String name, ArrowType type)
static Field	nullablePrimitive(String name, ArrowType.PrimitiveType type)
String	toString()

クラスから継承されたメソッド java.lang.Object

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

コンストラクタの詳細

Field

@Deprecated
public Field(String name,
                         boolean nullable,
                         ArrowType type,
                         List<Field> children)

非推奨です。 Use FieldType or static constructor instead.

Field

@Deprecated
public Field(String name,
                         boolean nullable,
                         ArrowType type,
                         DictionaryEncoding dictionary,
                         List<Field> children)

非推奨です。 Use FieldType or static constructor instead.

Field

public Field(String name,
             FieldType fieldType,
             List<Field> children)

メソッドの詳細

nullablePrimitive

public static Field nullablePrimitive(String name,
                                      ArrowType.PrimitiveType type)

nullable

public static Field nullable(String name,
                             ArrowType type)

createVector

public FieldVector createVector(BufferAllocator allocator)

Construct a new vector of this type using the given allocator.

convertField

public static Field convertField(Field field)

Constructs a new instance from a flatbuffer representation of the field.

getField

public int getField(com.google.flatbuffers.FlatBufferBuilder builder)

Puts this object into builder and returns the length of the serialized flatbuffer.

getName

public String getName()

isNullable

public boolean isNullable()

getType

public ArrowType getType()

getFieldType

public FieldType getFieldType()

getDictionary

public DictionaryEncoding getDictionary()

getChildren

public List<Field> getChildren()

getMetadata

public Map<String,String> getMetadata()

hashCode

public int hashCode()

オーバーライド:

hashCode クラス内 Object

equals

public boolean equals(Object obj)

オーバーライド:

equals クラス内 Object

toString

public String toString()

オーバーライド:

toString クラス内 Object