Package com.vaadin.flow.internal

Class JsonSerializer

  • public final class JsonSerializer
extends Object
    General-purpose serializer of Java objects to JsonValue and deserializer of JsonValue to Java objects.

    For internal use only. May be renamed or removed in a future release.

    Since:
    1.0

    • 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