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.

    Since:

    1.0

    • Method Summary

      All Methods
      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.

    • 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