Class JsonNullObjException

  • All Implemented Interfaces:
    java.io.Serializable
    public class JsonNullObjException
extends JsonBindingObjException
    JsonNullObjException 🠞
    • Json - This exception is thrown by the Json Reader Classes

    • Null - A JsonObject or a JsonArray contained an entry that was set to json-null; however if the user has requested that the reader throw an exception when null is encountered, then this exception throws.

    • Obj - Since these exceptions contain 'convenience fields' which provide some simple data about the Json that caused the exception throw, and since the 'relevant information' about a JsonObject property and a JsonArray index are somewhat different - there are two different exceptions for them! (An Exception for Object's and an exception for Array's).

      This class reports null-contents errors that occur when retrieving data from JsonObject's

    • Exception - This class inherits class Exception
    Used to indicate that one of the properties within a JsonObject contained Json-Null, when it was expected to contain a valid Json-Type. There are several convenience field-constants provided by the parent-class of this exception, and an additional field provided here too.

    The following 'final' Convenience Fields are exported by this Exception Class:
    Inherited Field Field Type Inherited From
    propertyName java.lang.String JsonBindingObjException
    errorSourceJsonStruct JsonStructure JsonBindingException
    expectedJsonType JsonValue.ValueType JsonBindingException
    methodReturnJavaType java.lang.Class JsonBindingException
    valueRetrieved JsonValue JsonBindingException

    The main benefit of this complicated exception-class inheritance tree are the exception messages generated by this class. If any sub-class of JsonBindingException is thrown, it is guaranteed to produce as much detail as possible about which Json-Element has generated the error. Below is an example of what this class exception messages look like:

    Terminal Output:
    Exception in thread "main" Torello.Java.Additional.JsonNullObjException: An Object-Property Contained Json-Null Found In JsonObject: {"yearPurchased":null} Property-Name: yearPurchased Expected Json-Type: JsonValue.ValueType.NUMBER Contained JsonValue: JsonValue.NULL (Json-Null) Having Actual Json-Type: JsonValue.ValueType.NULL Converting To Java-Type: java.lang.Integer ... [followed by stack-trace]
    See Also:
    Serialized Form


    • Field Detail

      • serialVersionUID

        🡇  ⇈  ⮫ 🗕  🗗  🗖 
        public static final long serialVersionUID
        This fulfils the SerialVersion UID requirement for all classes that implement Java's interface java.io.Serializable. Using the Serializable Implementation offered by java is very easy, and can make saving program state when debugging a lot easier. It can also be used in place of more complicated systems like "hibernate" to store data as well.

        Note that Java's java.lang.Exception and java.lang.Error classes implement the Serializable interface, and a warning-free build expects this field be defined here.
        See Also:
        Constant Field Values
        Code:
        Exact Field Declaration Expression:
         public static final long serialVersionUID = 1;

    • Constructor Detail

      • JsonNullObjException

        🡅  🡇  ⇈  ⮫ 🗕  🗗  🗖 
        public JsonNullObjException​(JsonObject errorSourceJsonObject,
                            java.lang.String propertyName,
                            JsonValue.ValueType expectedJsonType,
                            java.lang.Class<?> methodReturnJavaType)
        Constructs a JsonNullObjException with no specified detail messsage, and the user-provided convenience-field values.
        Parameters:
        errorSourceJsonObject - The JsonObject from which the property is being retrieved / extracted.
        propertyName - This is the property-name into the JsonObject from which the property is being retrieved / extracted.
        expectedJsonType - This is the Json-Type that was expected to be retrieved from JsonObject.
        methodReturnJavaType - Class ReadJSON will always provide the ultimate Java-Type that is to be returned by the method where this exception is being thrown.

      • JsonNullObjException

        🡅  ⇈  ⮫ 🗕  🗗  🗖 
        public JsonNullObjException​(java.lang.String message,
                            JsonObject errorSourceJsonObject,
                            java.lang.String propertyName,
                            JsonValue.ValueType expectedJsonType,
                            java.lang.Class<?> methodReturnJavaType)
        Constructs a JsonNullObjException with the specified detail message, and user-provided convenience-field values.
        Parameters:
        message - the detail message.
        errorSourceJsonObject - The JsonObject from which the property is being retrieved / extracted.
        propertyName - This is the property-name into the JsonObject from which the property is being retrieved / extracted.
        expectedJsonType - This is the Json-Type that was expected to be retrieved from JsonObject.
        methodReturnJavaType - Class ReadJSON will always provide the ultimate Java-Type that is to be returned by the method where this exception is being thrown.