Class ObjectValueDeserializer<T>

java.lang.Object
tools.jackson.databind.ValueDeserializer<T>
org.springframework.boot.jackson.ObjectValueDeserializer<T>
Type Parameters:
T - the supported object type
All Implemented Interfaces:
tools.jackson.databind.deser.NullValueProvider
public abstract class ObjectValueDeserializer<T> extends tools.jackson.databind.ValueDeserializer<T>
Helper base class for ValueDeserializer implementations that deserialize objects.
Since:
4.0.0
Author:
Phillip Webb
See Also:

  • Nested Class Summary

    Nested classes/interfaces inherited from class tools.jackson.databind.ValueDeserializer

    tools.jackson.databind.ValueDeserializer.None

  • Constructor Summary

    Constructors
    Constructor
    Description
    ObjectValueDeserializer()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    final T
    deserialize(tools.jackson.core.JsonParser jp, tools.jackson.databind.DeserializationContext ctxt)
     
    protected abstract T
    deserializeObject(tools.jackson.core.JsonParser jsonParser, tools.jackson.databind.DeserializationContext context, tools.jackson.databind.JsonNode tree)
    Deserialize JSON content into the value type this serializer handles.
    protected final tools.jackson.databind.JsonNode
    getRequiredNode(tools.jackson.databind.JsonNode tree, String fieldName)
    Helper method to return a JsonNode from the tree.
    protected final <D> @Nullable D
    nullSafeValue(@Nullable tools.jackson.databind.JsonNode jsonNode, Class<D> type)
    Helper method to extract a value from the given jsonNode or return null when the node itself is null.
    protected final <D,R> @Nullable R
    nullSafeValue(@Nullable tools.jackson.databind.JsonNode jsonNode, Class<D> type, Function<D,R> mapper)
    Helper method to extract a value from the given jsonNode or return null when the node itself is null.

    Methods inherited from class tools.jackson.databind.ValueDeserializer

    createContextual, deserialize, deserializeWithType, deserializeWithType, findBackReference, getAbsentValue, getDelegatee, getEmptyAccessPattern, getEmptyValue, getKnownPropertyNames, getNullAccessPattern, getNullValue, getObjectIdReader, handledType, isCachable, logicalType, replaceDelegatee, resolve, supportsUpdate, unwrappingDeserializer

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • ObjectValueDeserializer

      public ObjectValueDeserializer()

  • Method Details

    • deserialize

      public final T deserialize(tools.jackson.core.JsonParser jp, tools.jackson.databind.DeserializationContext ctxt)
      Specified by:
      deserialize in class tools.jackson.databind.ValueDeserializer<T>

    • deserializeObject

      protected abstract T deserializeObject(tools.jackson.core.JsonParser jsonParser, tools.jackson.databind.DeserializationContext context, tools.jackson.databind.JsonNode tree)
      Deserialize JSON content into the value type this serializer handles.
      Parameters:
      jsonParser - the source parser used for reading JSON content
      context - context that can be used to access information about this deserialization activity
      tree - deserialized JSON content as tree expressed using set of TreeNode instances
      Returns:
      the deserialized object
      See Also:

    • nullSafeValue

      protected final <D,R> @Nullable R nullSafeValue(@Nullable tools.jackson.databind.JsonNode jsonNode, Class<D> type, Function<D,R> mapper)
      Helper method to extract a value from the given jsonNode or return null when the node itself is null.
      Type Parameters:
      D - the data type requested
      R - the result type
      Parameters:
      jsonNode - the source node (may be null)
      type - the data type. May be String, Boolean, Long, Integer, Short, Double, Float, BigDecimal or BigInteger.
      mapper - a mapper to convert the value when it is not null
      Returns:
      the node value or null
      Since:
      3.4.0

    • nullSafeValue

      protected final <D> @Nullable D nullSafeValue(@Nullable tools.jackson.databind.JsonNode jsonNode, Class<D> type)
      Helper method to extract a value from the given jsonNode or return null when the node itself is null.
      Type Parameters:
      D - the data type requested
      Parameters:
      jsonNode - the source node (may be null)
      type - the data type. May be String, Boolean, Long, Integer, Short, Double, Float, BigDecimal or BigInteger.
      Returns:
      the node value or null

    • getRequiredNode

      protected final tools.jackson.databind.JsonNode getRequiredNode(tools.jackson.databind.JsonNode tree, String fieldName)
      Helper method to return a JsonNode from the tree.
      Parameters:
      tree - the source tree
      fieldName - the field name to extract
      Returns:
      the JsonNode