org.codehaus.jackson.map.deser
Class JsonNodeDeserializer

java.lang.Object
  org.codehaus.jackson.map.JsonDeserializer<T>
      org.codehaus.jackson.map.deser.StdDeserializer<JsonNode>
          org.codehaus.jackson.map.deser.JsonNodeDeserializer

public class JsonNodeDeserializer
extends StdDeserializer<JsonNode>

Deserializer that can build instances of JsonNode from any Json content.

Nested Class Summary

Nested classes/interfaces inherited from class org.codehaus.jackson.map.deser.StdDeserializer

StdDeserializer.BigDecimalDeserializer, StdDeserializer.BigIntegerDeserializer, StdDeserializer.BooleanDeserializer, StdDeserializer.ByteDeserializer, StdDeserializer.CalendarDeserializer, StdDeserializer.CharacterDeserializer, StdDeserializer.ClassDeserializer, StdDeserializer.DoubleDeserializer, StdDeserializer.FloatDeserializer, StdDeserializer.IntegerDeserializer, StdDeserializer.LongDeserializer, StdDeserializer.NumberDeserializer, StdDeserializer.PrimitiveOrWrapperDeserializer<T>, StdDeserializer.ShortDeserializer, StdDeserializer.SqlDateDeserializer, StdDeserializer.StackTraceElementDeserializer, StdDeserializer.StringDeserializer

Field Summary

protected JsonNodeFactory	_nodeFactory
static JsonNodeDeserializer	instance

Constructor Summary

JsonNodeDeserializer()

Method Summary

protected void	_handleDuplicateField(java.lang.String fieldName, ObjectNode objectNode, JsonNode oldValue, JsonNode newValue) Method called when there is a duplicate value for a field.
protected void	_reportProblem(JsonParser jp, java.lang.String msg)
JsonNode	deserialize(JsonParser jp, DeserializationContext ctxt) Method that can be called to ask implementation to deserialize json content into the value type this serializer handles.
JsonNodeFactory	getNodeFactory()
void	setNodeFactory(JsonNodeFactory nf)

Methods inherited from class org.codehaus.jackson.map.deser.StdDeserializer

_parseDate, _parseDouble, _parseInt, getValueClass

Methods inherited from class org.codehaus.jackson.map.JsonDeserializer

deserialize, getNullValue, shouldBeCached

Methods inherited from class java.lang.Object

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

Field Detail

instance

public static final JsonNodeDeserializer instance

_nodeFactory

protected JsonNodeFactory _nodeFactory

Constructor Detail

JsonNodeDeserializer

public JsonNodeDeserializer()

Method Detail

getNodeFactory

public JsonNodeFactory getNodeFactory()

setNodeFactory

public void setNodeFactory(JsonNodeFactory nf)

deserialize

public JsonNode deserialize(JsonParser jp,
                            DeserializationContext ctxt)
                     throws java.io.IOException,
                            JsonProcessingException

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. 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<JsonNode>

Parameters:

jp - Parsed used for reading Json content

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

Returns:

Deserializer value

Throws:

java.io.IOException

JsonProcessingException

_reportProblem

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

Throws:

JsonMappingException

_handleDuplicateField

protected void _handleDuplicateField(java.lang.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