Package com.yahoo.tensor.serialization

Class JsonFormat

java.lang.Object

com.yahoo.tensor.serialization.JsonFormat

public class JsonFormat
extends Object

Writes tensors on the JSON format used in Vespa tensor document fields: A JSON map containing a 'cells' or 'values' array. See https://docs.vespa.ai/en/reference/document-json-format.html

Author:

bratseth

Constructor Summary

Constructors

Constructor	Description
JsonFormat()

Method Summary

Modifier and Type	Method	Description
static Tensor	decode(TensorType type, byte[] jsonTensorValue)	Deserializes the given tensor from JSON format
static double[]	decodeHexString(String input, TensorType.Value valueType)
static double	decodeNumberString(String input)
static byte[]	encode(Tensor tensor)	Serializes the given tensor value into JSON format, in long format, wrapped in an object containing "cells" only.
static byte[]	encode(Tensor tensor, boolean shortForm, boolean directValues)	Serializes the given tensor value into JSON format.
static byte[]	encodeShortForm(Tensor tensor)	Deprecated. use #encode(#Tensor, boolean, boolean)
static byte[]	encodeWithType(Tensor tensor)	Deprecated. use #encode(#Tensor, boolean, boolean)

Methods inherited from class java.lang.Object

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

Constructor Details

JsonFormat

public JsonFormat()

Method Details

encode

public static byte[] encode(Tensor tensor,
 boolean shortForm,
 boolean directValues)

Serializes the given tensor value into JSON format.

Parameters:

tensor - the tensor to serialize

shortForm - whether to encode in a short type-dependent format

directValues - whether to encode values directly, or wrapped in am object containing "type" and "cells"

encode

public static byte[] encode(Tensor tensor)

Serializes the given tensor value into JSON format, in long format, wrapped in an object containing "cells" only.

encodeWithType

@Deprecated
public static byte[] encodeWithType(Tensor tensor)

Deprecated.

use #encode(#Tensor, boolean, boolean)

Serializes the given tensor type and value into JSON format.

encodeShortForm

@Deprecated
public static byte[] encodeShortForm(Tensor tensor)

Deprecated.

use #encode(#Tensor, boolean, boolean)

Serializes the given tensor type and value into a short-form JSON format.

decode

public static Tensor decode(TensorType type,
 byte[] jsonTensorValue)

Deserializes the given tensor from JSON format

decodeHexString

public static double[] decodeHexString(String input,
 TensorType.Value valueType)

decodeNumberString

public static double decodeNumberString(String input)