Class JsonNodeDeserializer

    • Method Detail

      • getDeserializer

        public static JsonDeserializer<? extends JsonNode> getDeserializer​(Class<?> nodeClass)
        Factory method for accessing deserializer for specific node type
      • deserialize

        public JsonNode deserialize​(JsonParser p,
                                    DeserializationContext ctxt)
                             throws IOException
        Implementation that will produce types of any JSON nodes; not just one deserializer is registered to handle (in case of more specialized handler). Overridden by typed sub-classes for more thorough checking
        Specified by:
        deserialize in class JsonDeserializer<JsonNode>
        p - Parsed used for reading JSON content
        ctxt - Context that can be used to access information about this deserialization activity.
        Deserialized value
      • logicalType

        public LogicalType logicalType()
        Description copied from class: JsonDeserializer
        Method for accessing logical type of values this deserializer produces. Typically used for further configuring handling of values, for example, to find which coercions are legal.
        logicalType in class JsonDeserializer<T extends JsonNode>
        Logical type of values this deserializer produces, if known; null if not
      • isCachable

        public boolean isCachable()
        Description copied from class: JsonDeserializer
        Method called to see if deserializer instance is cachable and usable for other properties of same type (type for which instance was created).

        Note that cached instances are still resolved on per-property basis, if instance implements ResolvableDeserializer: cached instance is just as the base. This means that in most cases it is safe to cache instances; however, it only makes sense to cache instances if instantiation is expensive, or if instances are heavy-weight.

        Default implementation returns false, to indicate that no caching is done.

        isCachable in class JsonDeserializer<T extends JsonNode>
      • supportsUpdate

        public Boolean supportsUpdate​(DeserializationConfig config)
        Description copied from class: JsonDeserializer
        Introspection method that may be called to see whether deserializer supports update of an existing value (aka "merging") or not. Return value should either be Boolean.FALSE if update is not supported at all (immutable values); Boolean.TRUE if update should usually work (regular POJOs, for example), or null if this is either not known, or may sometimes work.

        Information gathered is typically used to either prevent merging update for property (either by skipping, if based on global defaults; or by exception during deserialization construction if explicit attempt made) if Boolean.FALSE returned, or inclusion if Boolean.TRUE is specified. If "unknown" case (null returned) behavior is to exclude property if global defaults used; or to allow if explicit per-type or property merging is defined.

        Default implementation returns null to allow explicit per-type or per-property attempts.

        supportsUpdate in class JsonDeserializer<T extends JsonNode>