org.codehaus.jackson.map.deser
Class AbstractDeserializer

java.lang.Object
  extended by org.codehaus.jackson.map.JsonDeserializer<Object>
      extended by org.codehaus.jackson.map.deser.AbstractDeserializer

public class AbstractDeserializer
extends JsonDeserializer<Object>

Deserializer only used as placeholder for abstract types during polymorphic type handling deserialization. If so, there is no real deserializer associated with nominal type, just TypeDeserializer; and any calls that do not pass such resolver will result in an error.

Since:
1.6
Author:
tatu

Nested Class Summary
 
Nested classes/interfaces inherited from class org.codehaus.jackson.map.JsonDeserializer
JsonDeserializer.None
 
Field Summary
protected  boolean _acceptBoolean
           
protected  boolean _acceptDouble
           
protected  boolean _acceptInt
           
protected  boolean _acceptString
           
protected  JavaType _baseType
           
 
Constructor Summary
AbstractDeserializer(JavaType bt)
           
 
Method Summary
protected  Object _deserializeIfNatural(JsonParser jp, DeserializationContext ctxt)
           
 Object deserialize(JsonParser jp, DeserializationContext ctxt)
          Method that can be called to ask implementation to deserialize JSON content into the value type this serializer handles.
 Object deserializeWithType(JsonParser jp, DeserializationContext ctxt, TypeDeserializer typeDeserializer)
          Deserialization called when type being deserialized is defined to contain additional type identifier, to allow for correctly instantiating correct subtype.
 
Methods inherited from class org.codehaus.jackson.map.JsonDeserializer
deserialize, getEmptyValue, getNullValue, unwrappingDeserializer
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

_baseType

protected final JavaType _baseType

_acceptString

protected final boolean _acceptString

_acceptBoolean

protected final boolean _acceptBoolean

_acceptInt

protected final boolean _acceptInt

_acceptDouble

protected final boolean _acceptDouble
Constructor Detail

AbstractDeserializer

public AbstractDeserializer(JavaType bt)
Method Detail

deserializeWithType

public Object deserializeWithType(JsonParser jp,
                                  DeserializationContext ctxt,
                                  TypeDeserializer typeDeserializer)
                           throws IOException,
                                  JsonProcessingException
Description copied from class: JsonDeserializer
Deserialization called when type being deserialized is defined to contain additional type identifier, to allow for correctly instantiating correct subtype. This can be due to annotation on type (or its supertype), or due to global settings without annotations.

Default implementation may work for some types, but ideally subclasses should not rely on current default implementation. Implementation is mostly provided to avoid compilation errors with older code.

Overrides:
deserializeWithType in class JsonDeserializer<Object>
typeDeserializer - Deserializer to use for handling type information
Throws:
IOException
JsonProcessingException

deserialize

public Object deserialize(JsonParser jp,
                          DeserializationContext ctxt)
                   throws 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<Object>
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:
IOException
JsonProcessingException

_deserializeIfNatural

protected Object _deserializeIfNatural(JsonParser jp,
                                       DeserializationContext ctxt)
                                throws IOException,
                                       JsonProcessingException
Throws:
IOException
JsonProcessingException