Class MonthDeserializer

All Implemented Interfaces:
NullValueProvider, ValueInstantiator.Gettable

public class MonthDeserializer extends JSR310DateTimeDeserializerBase<Month>
Deserializer for Java 8 temporal Months.
  • Field Details

  • Constructor Details

    • MonthDeserializer

      public MonthDeserializer()
      NOTE: only public so that use via annotations (see [modules-java8#202]) is possible
    • MonthDeserializer

      public MonthDeserializer(DateTimeFormatter formatter)
    • MonthDeserializer

      protected MonthDeserializer(MonthDeserializer base, Boolean leniency)
    • MonthDeserializer

      protected MonthDeserializer(MonthDeserializer base, Boolean leniency, DateTimeFormatter formatter, com.fasterxml.jackson.annotation.JsonFormat.Shape shape)
  • Method Details

    • withLeniency

      protected MonthDeserializer withLeniency(Boolean leniency)
      Specified by:
      withLeniency in class JSR310DateTimeDeserializerBase<Month>
    • withDateFormat

      protected MonthDeserializer withDateFormat(DateTimeFormatter dtf)
      Specified by:
      withDateFormat in class JSR310DateTimeDeserializerBase<Month>
    • deserialize

      public Month deserialize(tools.jackson.core.JsonParser p, DeserializationContext ctxt) throws tools.jackson.core.JacksonException
      Description copied from class: ValueDeserializer
      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.currentToken() == 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).

      Handling null values (JsonToken.VALUE_NULL)
      : Note that this method is never called for the JSON null literal to avoid every deserializer from having to handle null values. Instead, the ValueDeserializer.getNullValue(DeserializationContext) method is called to produce a null value. To influence null handling, custom deserializers should override ValueDeserializer.getNullValue(DeserializationContext) and usually also ValueDeserializer.getNullAccessPattern().

      Specified by:
      deserialize in class ValueDeserializer<Month>
      Parameters:
      p - Parser used for reading JSON content
      ctxt - Context that can be used to access information about this deserialization activity.
      Returns:
      Deserialized value
      Throws:
      tools.jackson.core.JacksonException
    • _fromString

      protected Month _fromString(tools.jackson.core.JsonParser p, DeserializationContext ctxt, String string0) throws tools.jackson.core.JacksonException
      Throws:
      tools.jackson.core.JacksonException
    • _decode1BasedMonth

      private Month _decode1BasedMonth(int monthIndex, DeserializationContext ctxt) throws tools.jackson.core.JacksonException
      Validate and convert a 1‑based month number to Month.
      Throws:
      tools.jackson.core.JacksonException
    • _decode0BasedMonth

      private Month _decode0BasedMonth(int monthIndex, DeserializationContext ctxt) throws tools.jackson.core.JacksonException
      Validate and convert a 0‑based month number to Month.
      Throws:
      tools.jackson.core.JacksonException