Package de.agilecoders.wicket.jquery.util

Class Json

  • public final class Json
extends Object
    Helper functions to handle JsonNode values.
    Author:
    miha

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      static class  Json.ParseException
      Json parser runtime exception.
      static class  Json.RawValue
      An object that can be used to render raw String value, i.e.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static <T> T fromJson​(com.fasterxml.jackson.databind.JsonNode json, Class<T> clazz)
      Convert a JsonNode to a Java value
      static <T> T fromJson​(String json, com.fasterxml.jackson.databind.JavaType type)
      Convert a string to a Java value
      static <T> T fromJson​(String json, Class<T> clazz)
      Convert a JsonNode to a Java value
      static boolean isValid​(String json)
      verifies a valid json string
      static com.fasterxml.jackson.databind.node.ObjectNode newObject()
      Creates a new empty ObjectNode.
      static com.fasterxml.jackson.databind.JsonNode parse​(String jsonString)
      Parse a String representing a json, and return it as a JsonNode.
      static String stringify​(com.fasterxml.jackson.databind.JsonNode json)
      Convert a JsonNode to its string representation.
      static String stringify​(Object data)
      Convert an object to a json string representation.
      static com.fasterxml.jackson.databind.JsonNode toJson​(Object data)
      Convert an object to JsonNode.

    • Method Detail

      • fromJson

        public static <T> T fromJson​(String json,
                             com.fasterxml.jackson.databind.JavaType type)
        Convert a string to a Java value
        Type Parameters:
        T - type of return object
        Parameters:
        json - Json value to convert.
        type - Expected Java value type.
        Returns:
        casted value of given json object
        Throws:
        Json.ParseException - to runtime if json node can't be casted to clazz.

      • toJson

        public static com.fasterxml.jackson.databind.JsonNode toJson​(Object data)
        Convert an object to JsonNode.
        Parameters:
        data - Value to convert in Json.
        Returns:
        creates a new json object from given data object
        Throws:
        Json.ParseException - to runtime if object can't be parsed

      • fromJson

        public static <T> T fromJson​(com.fasterxml.jackson.databind.JsonNode json,
                             Class<T> clazz)
        Convert a JsonNode to a Java value
        Type Parameters:
        T - type of return object
        Parameters:
        json - Json value to convert.
        clazz - Expected Java value type.
        Returns:
        casted value of given json object
        Throws:
        Json.ParseException - to runtime if json node can't be casted to clazz.

      • fromJson

        public static <T> T fromJson​(String json,
                             Class<T> clazz)
        Convert a JsonNode to a Java value
        Type Parameters:
        T - type of return object
        Parameters:
        json - Json value to convert.
        clazz - Expected Java value type.
        Returns:
        casted value of given json object

      • newObject

        public static com.fasterxml.jackson.databind.node.ObjectNode newObject()
        Creates a new empty ObjectNode.
        Returns:
        a new empty json object.

      • stringify

        public static String stringify​(com.fasterxml.jackson.databind.JsonNode json)
        Convert a JsonNode to its string representation. If given value is null an empty json object will returned.
        Parameters:
        json - The json object to toJsonString
        Returns:
        stringified version of given json object

      • stringify

        public static String stringify​(Object data)
        Convert an object to a json string representation. If given value is null an empty json object will returned.
        Parameters:
        data - The data object to toJsonString
        Returns:
        stringified version of given json object

      • isValid

        public static boolean isValid​(String json)
        verifies a valid json string
        Parameters:
        json - The json string
        Returns:
        true, if string is a valid json string

      • parse

        public static com.fasterxml.jackson.databind.JsonNode parse​(String jsonString)
        Parse a String representing a json, and return it as a JsonNode.
        Parameters:
        jsonString - string to parse
        Returns:
        parsed json string as json node
        Throws:
        Json.ParseException - to runtime if json string can't be parsed