Package io.delta.kernel.defaults.internal.json

Class JsonUtils

Object

io.delta.kernel.defaults.internal.json.JsonUtils

public class JsonUtils
extends Object

Utilities method to serialize and deserialize Row objects with a limited set of data type values.

Following are the supported data types: boolean, byte, short, int, long, float, double, string, StructType (containing any of the supported subtypes), ArrayType, MapType (only a map with string keys is supported).

At a high-level, the JSON serialization is similar to that of Jackson's ObjectMapper.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	JsonUtils.RowSerializer

Method Summary

Modifier and Type	Method	Description
static io.delta.kernel.data.Row	rowFromJson(String json, io.delta.kernel.types.StructType schema)	Converts a JSON string to a Row.
static String	rowToJson(io.delta.kernel.data.Row row)	Converts a Row to a single line JSON string.

Methods inherited from class java.lang.Object

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

Method Details

rowToJson

public static String rowToJson(io.delta.kernel.data.Row row)

Converts a Row to a single line JSON string. This is currently used just in tests. Wll be used as part of the refactoring planned in #2929

Parameters:

row - the row to convert

Returns:

JSON string

rowFromJson

public static io.delta.kernel.data.Row rowFromJson(String json,
 io.delta.kernel.types.StructType schema)

Converts a JSON string to a Row.

Parameters:

json - JSON string

schema - to read the JSON according the schema

Returns:

Row instance with given schema.