JsonNodeDeserializer (jackson-databind 2.3.4)

java.lang.Object
- com.fasterxml.jackson.databind.JsonDeserializer<T>
- - com.fasterxml.jackson.databind.deser.std.StdDeserializer<T>
  - - com.fasterxml.jackson.databind.deser.std.JsonNodeDeserializer

All Implemented Interfaces:

Serializable
```
public class JsonNodeDeserializer
extends StdDeserializer<T>
```
Deserializer that can build instances of JsonNode from any JSON content, using appropriate JsonNode type.

See Also:
Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.JsonDeserializer
  JsonDeserializer.None

Field Summary
- Fields inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer
  _valueClass

Constructor Summary

Constructors
Modifier Constructor and Description

protected JsonNodeDeserializer()

Constructors
Modifier	Constructor and Description
`protected`	`JsonNodeDeserializer()`

Method Summary

Methods
Modifier and Type	Method and Description
`protected void`	`_handleDuplicateField(JsonParser jp, DeserializationContext ctxt, JsonNodeFactory nodeFactory, String fieldName, ObjectNode objectNode, JsonNode oldValue, JsonNode newValue)` Method called when there is a duplicate value for a field.
`protected void`	`_handleDuplicateField(String fieldName, ObjectNode objectNode, JsonNode oldValue, JsonNode newValue)` Deprecated. Since 2.3, use the overloaded variant
`protected void`	`_reportProblem(JsonParser jp, String msg)`
`JsonNode`	`deserialize(JsonParser jp, DeserializationContext ctxt)` Implementation that will produce types of any JSON nodes; not just one deserializer is registered to handle (in case of more specialized handler).
`protected JsonNode`	`deserializeAny(JsonParser jp, DeserializationContext ctxt, JsonNodeFactory nodeFactory)`
`protected ArrayNode`	`deserializeArray(JsonParser jp, DeserializationContext ctxt, JsonNodeFactory nodeFactory)`
`protected ObjectNode`	`deserializeObject(JsonParser jp, DeserializationContext ctxt, JsonNodeFactory nodeFactory)`
`Object`	`deserializeWithType(JsonParser jp, DeserializationContext ctxt, TypeDeserializer typeDeserializer)` Base implementation that does not assume specific type inclusion mechanism.
`static JsonDeserializer<? extends JsonNode>`	`getDeserializer(Class<?> nodeClass)` Factory method for accessing deserializer for specific node type
`JsonNode`	`getNullValue()` Method that can be called to determine value to be used for representing null values (values deserialized when JSON token is `JsonToken.VALUE_NULL`).

Methods inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer
_hasTextualNull, _isNaN, _isNegInf, _isPosInf, _parseBoolean, _parseBooleanFromNumber, _parseBooleanPrimitive, _parseByte, _parseDate, _parseDouble, _parseDoublePrimitive, _parseFloat, _parseFloatPrimitive, _parseInteger, _parseIntPrimitive, _parseLong, _parseLongPrimitive, _parseShort, _parseShortPrimitive, _parseString, findConvertingContentDeserializer, findDeserializer, getValueClass, getValueType, handledType, handleUnknownProperty, isDefaultDeserializer, isDefaultKeyDeserializer, parseDouble

Methods inherited from class com.fasterxml.jackson.databind.JsonDeserializer
deserialize, findBackReference, getDelegatee, getEmptyValue, getKnownPropertyNames, getObjectIdReader, isCachable, replaceDelegatee, unwrappingDeserializer

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- JsonNodeDeserializer
```
protected JsonNodeDeserializer()
```

Method Detail

getDeserializer

public static JsonDeserializer<? extends JsonNode> getDeserializer(Class<?> nodeClass)

Factory method for accessing deserializer for specific node type

getNullValue
```
public JsonNode getNullValue()
```
Description copied from class: JsonDeserializer

Method that can be called to determine value to be used for representing null values (values deserialized when JSON token is JsonToken.VALUE_NULL). Usually this is simply Java null, but for some types (especially primitives) it may be necessary to use non-null values.
Note that deserializers are allowed to call this just once and then reuse returned value; that is, method is not guaranteed to be called once for each conversion.
Default implementation simply returns null.

Overrides:

getNullValue in class JsonDeserializer<JsonNode>

deserialize
```
public JsonNode deserialize(JsonParser jp,
                   DeserializationContext ctxt)
                     throws IOException,
                            JsonProcessingException
```
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>

Parameters:
jp - Parsed used for reading JSON content
ctxt - Context that can be used to access information about this deserialization activity.

Returns:
Deserialized value

Throws:

IOException

JsonProcessingException

deserializeWithType
```
public Object deserializeWithType(JsonParser jp,
                         DeserializationContext ctxt,
                         TypeDeserializer typeDeserializer)
                           throws IOException,
                                  JsonProcessingException
```
Description copied from class: StdDeserializer

Base implementation that does not assume specific type inclusion mechanism. Sub-classes are expected to override this method if they are to handle type information.

Overrides:

deserializeWithType in class StdDeserializer<T extends JsonNode>

typeDeserializer - Deserializer to use for handling type information

Throws:

IOException

JsonProcessingException

_reportProblem

protected void _reportProblem(JsonParser jp,
                  String msg)
                       throws JsonMappingException

Throws:: JsonMappingException

_handleDuplicateField

@Deprecated
protected void _handleDuplicateField(String fieldName,
                                    ObjectNode objectNode,
                                    JsonNode oldValue,
                                    JsonNode newValue)
                              throws JsonProcessingException

Deprecated. Since 2.3, use the overloaded variant

Throws:: JsonProcessingException

_handleDuplicateField
```
protected void _handleDuplicateField(JsonParser jp,
                         DeserializationContext ctxt,
                         JsonNodeFactory nodeFactory,
                         String fieldName,
                         ObjectNode objectNode,
                         JsonNode oldValue,
                         JsonNode newValue)
                              throws JsonProcessingException
```
Method called when there is a duplicate value for a field. By default we don't care, and the last value is used. Can be overridden to provide alternate handling, such as throwing an exception, or choosing different strategy for combining values or choosing which one to keep.

Parameters:
fieldName - Name of the field for which duplicate value was found
objectNode - Object node that contains values
oldValue - Value that existed for the object node before newValue was added
newValue - Newly added value just added to the object node

Throws:

JsonProcessingException

deserializeObject

protected final ObjectNode deserializeObject(JsonParser jp,
                           DeserializationContext ctxt,
                           JsonNodeFactory nodeFactory)
                                      throws IOException,
                                             JsonProcessingException

Throws:: IOException; JsonProcessingException

deserializeArray

protected final ArrayNode deserializeArray(JsonParser jp,
                         DeserializationContext ctxt,
                         JsonNodeFactory nodeFactory)
                                    throws IOException,
                                           JsonProcessingException

Throws:: IOException; JsonProcessingException

deserializeAny

protected final JsonNode deserializeAny(JsonParser jp,
                      DeserializationContext ctxt,
                      JsonNodeFactory nodeFactory)
                                 throws IOException,
                                        JsonProcessingException

Throws:: IOException; JsonProcessingException

Class JsonNodeDeserializer

Nested Class Summary

Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.JsonDeserializer

Field Summary

Fields inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer

Constructor Summary

Method Summary

Methods inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer

Methods inherited from class com.fasterxml.jackson.databind.JsonDeserializer

Methods inherited from class java.lang.Object

Constructor Detail

JsonNodeDeserializer

Method Detail

getDeserializer

getNullValue

deserialize

deserializeWithType

_reportProblem

_handleDuplicateField

_handleDuplicateField

deserializeObject

deserializeArray

deserializeAny