Package org.techbd.util

Class JsonText

java.lang.Object

org.techbd.util.JsonText

public class JsonText
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	JsonText.ByteArrayToStringOrJsonSerializer	Custom serializer for byte arrays.
static interface	JsonText.JsonObjectResult
static class	JsonText.JsonTextSerializer	Custom serializer for JSON text.

Field Summary

Fields

Modifier and Type	Field	Description
static final com.fasterxml.jackson.databind.ObjectMapper	objectMapper

Constructor Summary

Constructors

Constructor	Description
JsonText()

Method Summary

Modifier and Type	Method	Description
JsonText.JsonObjectResult	getJsonObject(String jsonString)	Parses a JSON string and returns a JsonText.JsonObjectResult indicating the outcome.

Methods inherited from class java.lang.Object

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

Field Details

objectMapper

public static final com.fasterxml.jackson.databind.ObjectMapper objectMapper

Constructor Details

JsonText

public JsonText()

Method Details

getJsonObject

public JsonText.JsonObjectResult getJsonObject(String jsonString)

Parses a JSON string and returns a JsonText.JsonObjectResult indicating the outcome.

This method attempts to parse the provided JSON string into a Map. If the JSON string contains a key named $class, it tries to instantiate an object of that class using the parsed JSON map and the original JSON string. The result of the parsing and potential instantiation is encapsulated in a JsonText.JsonObjectResult object.

Possible results include:

• JsonText.JsonObjectResult.ValidResult - The JSON was parsed successfully and an instance of the specified class was created.
• JsonText.JsonObjectResult.ValidResultClassNotFound - The JSON was parsed successfully, but the specified class was not found.
• JsonText.JsonObjectResult.ValidResultClassNotInstantiated - The JSON was parsed successfully, but the specified class could not be instantiated.
• JsonText.JsonObjectResult.ValidUntypedResult - The JSON was parsed successfully but does not specify a class.
• JsonText.JsonObjectResult.InvalidResult - The JSON could not be parsed or other errors occurred.

Usage example:

 
 String jsonString = "{\"$class\":\"com.example.MyClass\", \"key\":\"value\"}";
 JsonObjectResult result = myObject.getJsonObject(jsonString);
 
 if (result instanceof JsonObjectResult.ValidResult) {
     // handle valid result
 } else if (result instanceof JsonObjectResult.InvalidResult) {
     // handle invalid result
 }
 
 

Parameters:

jsonString - the JSON string to parse

Returns:

a JsonText.JsonObjectResult object representing the outcome of the parsing and potential instantiation