Package com.flowingcode.vaadin.jsonmigration

Class JsonCodec

java.lang.Object

com.flowingcode.vaadin.jsonmigration.JsonCodec

public class JsonCodec
extends Object

Utility for encoding objects to and from JSON.

Supported types are

• String
• Boolean and boolean
• Integer and int
• Double and double (NaN and infinity not supported)
• JsonValue and all its sub types
• Element (encoded as a reference to the element)
• Component (encoded as a reference to the root element)

Author:

Vaadin Ltd

Constructor Summary

Constructors

Constructor	Description
JsonCodec()

Method Summary

Modifier and Type	Method	Description
static boolean	canEncodeWithoutTypeInfo(Class<?> type)	Helper for checking whether the type is supported by encodeWithoutTypeInfo(Object).
static <T> T	decodeAs(elemental.json.JsonValue json, Class<T> type)	Decodes the given JSON value as the given type.
static elemental.json.JsonValue	encodeWithoutTypeInfo(Object value)	Helper for encoding any "primitive" value that is directly supported in JSON.

Methods inherited from class java.lang.Object

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

Constructor Details

JsonCodec

public JsonCodec()

Method Details

decodeAs

public static <T> T decodeAs(elemental.json.JsonValue json,
 Class<T> type)

Decodes the given JSON value as the given type.

Supported types are String, Boolean, Integer, Double and primitives boolean, int, double

Type Parameters:

T - the decoded type

Parameters:

json - the JSON value

type - the type to decode as

Returns:

the value decoded as the given type

Throws:

IllegalArgumentException - if the type was unsupported

canEncodeWithoutTypeInfo

public static boolean canEncodeWithoutTypeInfo(Class<?> type)

Helper for checking whether the type is supported by encodeWithoutTypeInfo(Object). Supported value types are String, Integer, Double, Boolean, JsonValue.

Parameters:

type - the type to check

Returns:

whether the type can be encoded

encodeWithoutTypeInfo

public static elemental.json.JsonValue encodeWithoutTypeInfo(Object value)

Helper for encoding any "primitive" value that is directly supported in JSON. Supported values types are String, Number, Boolean, JsonValue. null is also supported.

Parameters:

value - the value to encode

Returns:

the value encoded as JSON