com.vaadin.flow.internal

Class JsonSerializer

java.lang.Object

com.vaadin.flow.internal.JsonSerializer

public final class JsonSerializer
extends Object

General-purpose serializer of Java objects to JsonValue and deserializer of JsonValue to Java objects.

Method Summary

Modifier and Type	Method and Description
static elemental.json.JsonArray	toJson(Collection<?> beans) Converts a collection of object into a JsonArray, converting each item of the collection individually.
static elemental.json.JsonValue	toJson(Object bean) Converts a Java bean, JsonSerializable instance, String, wrapper of primitive type or enum to a JsonValue.
static <T> T	toObject(Class<T> type, elemental.json.JsonValue json) Converts a JsonValue to the corresponding Java object.
static <T> List<T>	toObjects(Class<T> type, elemental.json.JsonArray json) Converts a JsonArray into a collection of Java objects.

Methods inherited from class java.lang.Object

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

Method Detail

toJson

public static elemental.json.JsonValue toJson(Object bean)

Converts a Java bean, JsonSerializable instance, String, wrapper of primitive type or enum to a JsonValue.

When a bean is used, a JsonObject is returned.

Parameters:

bean - Java object to be converted

Returns:

the json representation of the Java object

toJson

public static elemental.json.JsonArray toJson(Collection<?> beans)

Converts a collection of object into a JsonArray, converting each item of the collection individually.

Parameters:

beans - the collection of objects to be converted

Returns:

the json representation of the objects in the collectios. An empty array is returned if the input collections is null

toObject

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

Converts a JsonValue to the corresponding Java object. The Java object can be a Java bean, JsonSerializable instance, String, wrapper of primitive types or an enum.

Type Parameters:

T - the resulting object type

Parameters:

type - the type of the Java object convert the json to

json - the json representation of the object

Returns:

the deserialized object, or null if the input json is null

toObjects

public static <T> List<T> toObjects(Class<T> type,
                                    elemental.json.JsonArray json)

Converts a JsonArray into a collection of Java objects. The Java objects can be Java beans, JsonSerializable instances, Strings, wrappers of primitive types or enums.

Type Parameters:

T - the resulting objects types

Parameters:

type - the type of the elements in the array

json - the json representation of the objects

Returns:

a modifiable list of converted objects. Returns an empty list if the input array is null