Field Detail

• instance

  public static final NumberDeserializers.BigDecimalDeserializer instance

Constructor Detail

• NumberDeserializers.BigDecimalDeserializer

  public NumberDeserializers.BigDecimalDeserializer()

Method Detail

• getEmptyValue

  public Object getEmptyValue(DeserializationContext ctxt)

  Description copied from class: JsonDeserializer
  Method called to determine value to be used for "empty" values (most commonly when deserializing from empty JSON Strings). Usually this is same as JsonDeserializer.getNullValue(com.fasterxml.jackson.databind.DeserializationContext) (which in turn is usually simply Java null), but it can be overridden for types. Or, if type should never be converted from empty String, method can also throw an exception.

  Since version 2.6 (in which the context argument was added), call is expected to be made each and every time an empty value is needed.

  Since version 2.9 does not require return of `T` any more.

  Default implementation simply calls JsonDeserializer.getNullValue(com.fasterxml.jackson.databind.DeserializationContext) and returns value.

  Overrides:

  getEmptyValue in class JsonDeserializer<BigDecimal>

• deserialize

  public BigDecimal deserialize(JsonParser p,
                       DeserializationContext ctxt)
                         throws IOException

  Description copied from class: JsonDeserializer
  Method that can be called to ask implementation to deserialize JSON content into the value type this serializer handles. Returned instance is to be constructed by method itself.

  Pre-condition for this method is that the parser points to the first event that is part of value to deserializer (and which is never JSON 'null' literal, more on this below): for simple types it may be the only value; and for structured types the Object start marker or a FIELD_NAME.

  The two possible input conditions for structured types result from polymorphism via fields. In the ordinary case, Jackson calls this method when it has encountered an OBJECT_START, and the method implementation must advance to the next token to see the first field name. If the application configures polymorphism via a field, then the object looks like the following.

        {
            "@class": "class name",
            ...
        }
    

  Jackson consumes the two tokens (the @class field name and its value) in order to learn the class and select the deserializer. Thus, the stream is pointing to the FIELD_NAME for the first field after the @class. Thus, if you want your method to work correctly both with and without polymorphism, you must begin your method with:

         if (p.getCurrentToken() == JsonToken.START_OBJECT) {
           p.nextToken();
         }
    

  This results in the stream pointing to the field name, so that the two conditions align.

  Post-condition is that the parser will point to the last event that is part of deserialized value (or in case deserialization fails, event that was not recognized or usable, which may be the same event as the one it pointed to upon call).

  Note that this method is never called for JSON null literal, and thus deserializers need (and should) not check for it.

  Specified by:

  deserialize in class JsonDeserializer<BigDecimal>

  Parameters:

  p - Parsed used for reading JSON content

  ctxt - Context that can be used to access information about this deserialization activity.

  Returns:

  Deserialized value

  Throws:

  IOException