com.fasterxml.jackson.databind.deser.std

Class ArrayBlockingQueueDeserializer

java.lang.Object

com.fasterxml.jackson.databind.JsonDeserializer<T>

com.fasterxml.jackson.databind.deser.std.StdDeserializer<T>

com.fasterxml.jackson.databind.deser.std.ContainerDeserializerBase<Collection<Object>>

com.fasterxml.jackson.databind.deser.std.CollectionDeserializer

com.fasterxml.jackson.databind.deser.std.ArrayBlockingQueueDeserializer

All Implemented Interfaces:

ContextualDeserializer, Serializable

public class ArrayBlockingQueueDeserializer
extends CollectionDeserializer

We need a custom deserializer both because ArrayBlockingQueue has no default constructor AND because it has size limit used for constructing underlying storage automatically.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.deser.std.CollectionDeserializer

CollectionDeserializer.CollectionReferringAccumulator

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.CollectionDeserializer

_collectionType, _delegateDeserializer, _valueDeserializer, _valueInstantiator, _valueTypeDeserializer

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

_valueClass, F_MASK_INT_COERCIONS

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ArrayBlockingQueueDeserializer(ArrayBlockingQueueDeserializer src) Copy-constructor that can be used by sub-classes to allow copy-on-write styling copying of settings of an existing instance.
	ArrayBlockingQueueDeserializer(JavaType collectionType, JsonDeserializer<Object> valueDeser, TypeDeserializer valueTypeDeser, ValueInstantiator valueInstantiator, JsonDeserializer<Object> delegateDeser) Constructor used when creating contextualized instances.

Method Summary

Modifier and Type	Method and Description
Collection<Object>	deserialize(com.fasterxml.jackson.core.JsonParser jp, DeserializationContext ctxt) Method that can be called to ask implementation to deserialize JSON content into the value type this serializer handles.
Collection<Object>	deserialize(com.fasterxml.jackson.core.JsonParser jp, DeserializationContext ctxt, Collection<Object> result0) Alternate deserialization method (compared to the most commonly used, JsonDeserializer.deserialize(JsonParser, DeserializationContext)), which takes in initialized value instance, to be configured and/or populated by deserializer.
Object	deserializeWithType(com.fasterxml.jackson.core.JsonParser jp, DeserializationContext ctxt, TypeDeserializer typeDeserializer) Base implementation that does not assume specific type inclusion mechanism.
protected ArrayBlockingQueueDeserializer	withResolved(JsonDeserializer<?> dd, JsonDeserializer<?> vd, TypeDeserializer vtd) Fluent-factory method call to construct contextual instance.

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

createContextual, getContentDeserializer, getContentType, handleNonArray, isCachable

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

findBackReference, wrapAndThrow

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

_coerceIntegral, _deserializeFromEmpty, _failDoubleToIntCoercion, _hasTextualNull, _isIntNumber, _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

getDelegatee, getEmptyValue, getEmptyValue, getKnownPropertyNames, getNullValue, getNullValue, getObjectIdReader, replaceDelegatee, unwrappingDeserializer

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayBlockingQueueDeserializer

public ArrayBlockingQueueDeserializer(JavaType collectionType,
                                      JsonDeserializer<Object> valueDeser,
                                      TypeDeserializer valueTypeDeser,
                                      ValueInstantiator valueInstantiator,
                                      JsonDeserializer<Object> delegateDeser)

Constructor used when creating contextualized instances.

ArrayBlockingQueueDeserializer

protected ArrayBlockingQueueDeserializer(ArrayBlockingQueueDeserializer src)

Copy-constructor that can be used by sub-classes to allow copy-on-write styling copying of settings of an existing instance.

Method Detail

withResolved

protected ArrayBlockingQueueDeserializer withResolved(JsonDeserializer<?> dd,
                                                      JsonDeserializer<?> vd,
                                                      TypeDeserializer vtd)

Fluent-factory method call to construct contextual instance.

Overrides:

withResolved in class CollectionDeserializer

deserialize

public Collection<Object> deserialize(com.fasterxml.jackson.core.JsonParser jp,
                                      DeserializationContext ctxt)
                               throws IOException

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 or a FIELD_NAME.

The two possible input conditions for structured types result from polymorphism via fields. In the ordinary case, Jackson calls this method when it has encountered an OBJECT_START, and the method implementation must advance to the next token to see the first field name. If the application configures polymorphism via a field, then the object looks like the following.

      {
          "@class": "class name",
          ...
      }
  

Jackson consumes the two tokens (the @class field name and its value) in order to learn the class and select the deserializer. Thus, the stream is pointing to the FIELD_NAME for the first field after the @class. Thus, if you want your method to work correctly both with and without polymorphism, you must begin your method with:

       if (jp.getCurrentToken() == JsonToken.START_OBJECT) {
         jp.nextToken();
       }
  

This results in the stream pointing to the field name, so that the two conditions align.

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.

Overrides:

deserialize in class CollectionDeserializer

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

deserialize

public Collection<Object> deserialize(com.fasterxml.jackson.core.JsonParser jp,
                                      DeserializationContext ctxt,
                                      Collection<Object> result0)
                               throws IOException

Description copied from class: JsonDeserializer

Alternate deserialization method (compared to the most commonly used, JsonDeserializer.deserialize(JsonParser, DeserializationContext)), which takes in initialized value instance, to be configured and/or populated by deserializer. Method is not necessarily used (or supported) by all types (it will not work for immutable types, for obvious reasons): most commonly it is used for Collections and Maps. It may be used both with "updating readers" (for POJOs) and when Collections and Maps use "getter as setter".

Default implementation just throws UnsupportedOperationException, to indicate that types that do not explicitly add support do not necessarily support update-existing-value operation (esp. immutable types)

Overrides:

deserialize in class CollectionDeserializer

Throws:

IOException

deserializeWithType

public Object deserializeWithType(com.fasterxml.jackson.core.JsonParser jp,
                                  DeserializationContext ctxt,
                                  TypeDeserializer typeDeserializer)
                           throws IOException

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 CollectionDeserializer

typeDeserializer - Deserializer to use for handling type information

Throws:

IOException