Module org.apache.arrow.vector

Package org.apache.arrow.vector.extension

Class OpaqueType

java.lang.Object

org.apache.arrow.vector.types.pojo.ArrowType

org.apache.arrow.vector.types.pojo.ArrowType.ComplexType

org.apache.arrow.vector.types.pojo.ArrowType.ExtensionType

org.apache.arrow.vector.extension.OpaqueType

public class OpaqueType
extends ArrowType.ExtensionType

Opaque is a placeholder for a type from an external (usually non-Arrow) system that could not be interpreted.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.arrow.vector.types.pojo.ArrowType

ArrowType.ArrowTypeID, ArrowType.ArrowTypeVisitor<T>, ArrowType.Binary, ArrowType.BinaryView, ArrowType.Bool, ArrowType.ComplexType, ArrowType.ComplexTypeVisitor<T>, ArrowType.Date, ArrowType.Decimal, ArrowType.Duration, ArrowType.ExtensionType, ArrowType.FixedSizeBinary, ArrowType.FixedSizeList, ArrowType.FloatingPoint, ArrowType.Int, ArrowType.Interval, ArrowType.LargeBinary, ArrowType.LargeList, ArrowType.LargeListView, ArrowType.LargeUtf8, ArrowType.List, ArrowType.ListView, ArrowType.Map, ArrowType.Null, ArrowType.PrimitiveType, ArrowType.PrimitiveTypeVisitor<T>, ArrowType.RunEndEncoded, ArrowType.Struct, ArrowType.Time, ArrowType.Timestamp, ArrowType.Union, ArrowType.Utf8, ArrowType.Utf8View

Field Summary

Fields

Modifier and Type	Field	Description
static final String	EXTENSION_NAME

Fields inherited from class org.apache.arrow.vector.types.pojo.ArrowType.ExtensionType

EXTENSION_METADATA_KEY_METADATA, EXTENSION_METADATA_KEY_NAME

Constructor Summary

Constructors

Constructor	Description
OpaqueType(ArrowType storageType, String typeName, String vendorName)	Create a new type instance.

Method Summary

Modifier and Type	Method	Description
ArrowType	deserialize(ArrowType storageType, String serializedData)	Given saved metadata and the underlying storage type, construct a new instance of the user type.
static void	ensureRegistered()	Register the extension type so it can be used globally.
boolean	extensionEquals(ArrowType.ExtensionType other)	Check equality of this type to another user-defined type.
String	extensionName()	The name of this user-defined type.
FieldWriter	getNewFieldWriter(ValueVector vector)
FieldVector	getNewVector(String name, FieldType fieldType, BufferAllocator allocator)	Construct a vector for the user type.
int	hashCode()
String	serialize()	Save any metadata for this type.
ArrowType	storageType()	The on-wire type for this user-defined type.
String	toString()
String	typeName()
String	vendorName()

Methods inherited from class org.apache.arrow.vector.types.pojo.ArrowType.ExtensionType

accept, equals, getType, getTypeID

Methods inherited from class org.apache.arrow.vector.types.pojo.ArrowType.ComplexType

isComplex

Methods inherited from class org.apache.arrow.vector.types.pojo.ArrowType

getInt, getTypeForField

Methods inherited from class java.lang.Object

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

Field Details

EXTENSION_NAME

public static final String EXTENSION_NAME

See Also:

• Constant Field Values

Constructor Details

OpaqueType

public OpaqueType(ArrowType storageType,
 String typeName,
 String vendorName)

Create a new type instance.

Parameters:

storageType - The underlying Arrow type.

typeName - The name of the unknown type.

vendorName - The name of the originating system of the unknown type.

Method Details

ensureRegistered

public static void ensureRegistered()

Register the extension type so it can be used globally.

storageType

public ArrowType storageType()

Description copied from class: ArrowType.ExtensionType

The on-wire type for this user-defined type.

Specified by:

storageType in class ArrowType.ExtensionType

typeName

public String typeName()

vendorName

public String vendorName()

extensionName

public String extensionName()

Description copied from class: ArrowType.ExtensionType

The name of this user-defined type. Used to identify the type during serialization.

Specified by:

extensionName in class ArrowType.ExtensionType

extensionEquals

public boolean extensionEquals(ArrowType.ExtensionType other)

Description copied from class: ArrowType.ExtensionType

Check equality of this type to another user-defined type.

Specified by:

extensionEquals in class ArrowType.ExtensionType

serialize

public String serialize()

Description copied from class: ArrowType.ExtensionType

Save any metadata for this type.

Specified by:

serialize in class ArrowType.ExtensionType

deserialize

public ArrowType deserialize(ArrowType storageType,
 String serializedData)

Description copied from class: ArrowType.ExtensionType

Given saved metadata and the underlying storage type, construct a new instance of the user type.

Specified by:

deserialize in class ArrowType.ExtensionType

getNewVector

public FieldVector getNewVector(String name,
 FieldType fieldType,
 BufferAllocator allocator)

Description copied from class: ArrowType.ExtensionType

Construct a vector for the user type.

Specified by:

getNewVector in class ArrowType.ExtensionType

hashCode

public int hashCode()

Overrides:

hashCode in class ArrowType.ExtensionType

getNewFieldWriter

public FieldWriter getNewFieldWriter(ValueVector vector)

Overrides:

getNewFieldWriter in class ArrowType.ExtensionType

toString

public String toString()

Overrides:

toString in class ArrowType.ExtensionType