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com.fasterxml.jackson.datatype.pcollections.deser

public abstract Class PCollectionsCollectionDeserializer<T extends PCollection<Object>>

extends StdDeserializer<T extends PCollection<Object>>
implements ContextualDeserializer
Class Inheritance
All Implemented Interfaces
com.fasterxml.jackson.databind.deser.ContextualDeserializer
Known Direct Subclasses
com.fasterxml.jackson.datatype.pcollections.deser.TreePVectorDeserializer, com.fasterxml.jackson.datatype.pcollections.deser.ConsPStackDeserializer, com.fasterxml.jackson.datatype.pcollections.deser.HashTreePBagDeserializer, com.fasterxml.jackson.datatype.pcollections.deser.HashTreePSetDeserializer, com.fasterxml.jackson.datatype.pcollections.deser.OrderedPSetDeserializer
Imports
java.io.IOException, com.fasterxml.jackson.core.JsonParser, .JsonToken, com.fasterxml.jackson.databind.*, com.fasterxml.jackson.databind.deser.ContextualDeserializer, com.fasterxml.jackson.databind.deser.std.StdDeserializer, com.fasterxml.jackson.databind.jsontype.TypeDeserializer, com.fasterxml.jackson.databind.type.CollectionType, .LogicalType, org.pcollections.PCollection

Field Summary

Modifier and TypeField and Description
protected final CollectionType
_containerType

protected final TypeDeserializer
_typeDeserializerForValue

If value instances have polymorphic type information, this is the type deserializer that can deserialize required type information

protected final JsonDeserializer<?>
_valueDeserializer

Deserializer used for values contained in collection being deserialized; either assigned on constructor, or during resolve().

private static final long
serialVersionUID

Hides com.fasterxml.jackson.databind.deser.std.StdDeserializer.serialVersionUID.

Inherited from com.fasterxml.jackson.databind.deser.std.StdDeserializer:
_valueClass_valueTypeF_MASK_ACCEPT_ARRAYSF_MASK_INT_COERCIONS

Constructor Summary

AccessConstructor and Description
protected
PCollectionsCollectionDeserializer(CollectionType type, TypeDeserializer typeDeser, JsonDeserializer<?> deser)

Method Summary

Modifier and TypeMethod and Description
protected T
_deserializeContents(JsonParser p, DeserializationContext ctxt)

protected T
_deserializeFromSingleValue(JsonParser p, DeserializationContext ctxt)

public JsonDeserializer<?>
createContextual(DeserializationContext
Deserialization context to access configuration, additional deserializers that may be needed by this deserializer
ctxt, BeanProperty
Method, field or constructor parameter that represents the property (and is used to assign deserialized value). Should be available; but there may be cases where caller cannot provide it and null is passed instead (in which case impls usually pass 'this' deserializer as is)
property)

Implements com.fasterxml.jackson.databind.deser.ContextualDeserializer.createContextual.

Method called to finalize setup of this deserializer, after deserializer itself has been registered.

protected abstract T
createEmptyCollection()

public T
deserialize(JsonParser
Parser used for reading JSON content
p, DeserializationContext
Context that can be used to access information about this deserialization activity.
ctxt)

Implements abstract com.fasterxml.jackson.databind.JsonDeserializer.deserialize.

Method that can be called to ask implementation to deserialize JSON content into the value type this serializer handles.

public Object
deserializeWithType(JsonParser p, DeserializationContext ctxt, TypeDeserializer
Deserializer to use for handling type information
typeDeserializer)

Overrides com.fasterxml.jackson.databind.deser.std.StdDeserializer.deserializeWithType.

Base implementation that does not assume specific type inclusion mechanism.

public LogicalType
logicalType()

Overrides com.fasterxml.jackson.databind.JsonDeserializer.logicalType.

Method for accessing logical type of values this deserializer produces.

public abstract PCollectionsCollectionDeserializer<T>
withResolved(TypeDeserializer typeDeser, JsonDeserializer<?> valueDeser)

Overridable fluent factory method used for creating contextual instances.

Inherited from com.fasterxml.jackson.databind.deser.std.StdDeserializer:
_byteOverflow_checkBooleanToStringCoercion_checkCoercionFail_checkDoubleSpecialValue_checkFloatSpecialValue_checkFloatToIntCoercion_checkFloatToStringCoercion_checkFromStringCoercion_checkFromStringCoercion_checkIntToFloatCoercion_checkIntToStringCoercion_checkTextualNull_checkToStringCoercion_coerceBooleanFromInt_coercedTypeDesc_coercedTypeDesc_coerceEmptyString_coerceIntegral_coerceNullToken_coerceTextualNull_deserializeFromArray_deserializeFromEmpty_deserializeFromEmptyString_deserializeFromString_deserializeWrappedValue_failDoubleToIntCoercion_findCoercionFromBlankString_findCoercionFromEmptyArray_findCoercionFromEmptyString_findNullProvider_hasTextualNull_intOverflow_isBlank_isEmptyOrTextualNull_isFalse_isIntNumber_isNaN_isNegInf_isPosInf_isTrue_neitherNull_nonNullNumber_parseBoolean_parseBooleanFromInt_parseBooleanPrimitive_parseBooleanPrimitive_parseBytePrimitive_parseDate_parseDate_parseDateFromArray_parseDouble_parseDouble_parseDoublePrimitive_parseDoublePrimitive_parseDoublePrimitive_parseFloatPrimitive_parseFloatPrimitive_parseFloatPrimitive_parseInteger_parseInteger_parseIntPrimitive_parseIntPrimitive_parseLong_parseLong_parseLongPrimitive_parseLongPrimitive_parseShortPrimitive_parseString_parseString_reportFailedNullCoerce_shortOverflow_verifyEndArrayForSingle_verifyNullForPrimitive_verifyNullForPrimitiveCoercion_verifyNullForScalarCoercion_verifyNumberForScalarCoercion_verifyStringForScalarCoercionfindContentNullProviderfindContentNullStylefindConvertingContentDeserializerfindDeserializerfindFormatFeaturefindFormatOverridesfindValueNullProvidergetValueClassgetValueInstantiatorgetValueTypegetValueTypehandledTypehandleMissingEndArrayForSinglehandleNestedArrayForSinglehandleUnknownPropertyisDefaultDeserializerisDefaultKeyDeserializer

Field Detail

_containerTypeback to summary
protected final CollectionType _containerType
_typeDeserializerForValueback to summary
protected final TypeDeserializer _typeDeserializerForValue

If value instances have polymorphic type information, this is the type deserializer that can deserialize required type information

_valueDeserializerback to summary
protected final JsonDeserializer<?> _valueDeserializer

Deserializer used for values contained in collection being deserialized; either assigned on constructor, or during resolve().

serialVersionUIDback to summary
private static final long serialVersionUID

Hides com.fasterxml.jackson.databind.deser.std.StdDeserializer.serialVersionUID.

Constructor Detail

PCollectionsCollectionDeserializerback to summary
protected PCollectionsCollectionDeserializer(CollectionType type, TypeDeserializer typeDeser, JsonDeserializer<?> deser)

Method Detail

_deserializeContentsback to summary
protected T _deserializeContents(JsonParser p, DeserializationContext ctxt) throws IOException
_deserializeFromSingleValueback to summary
protected T _deserializeFromSingleValue(JsonParser p, DeserializationContext ctxt) throws IOException
createContextualback to summary
public JsonDeserializer<?> createContextual(DeserializationContext ctxt, BeanProperty property) throws JsonMappingException

Implements com.fasterxml.jackson.databind.deser.ContextualDeserializer.createContextual.

Method called to finalize setup of this deserializer, after deserializer itself has been registered. This is needed to handle recursive and transitive dependencies.

Parameters
ctxt:DeserializationContext

Doc from com.fasterxml.jackson.databind.deser.ContextualDeserializer.createContextual.

Deserialization context to access configuration, additional deserializers that may be needed by this deserializer

property:BeanProperty

Doc from com.fasterxml.jackson.databind.deser.ContextualDeserializer.createContextual.

Method, field or constructor parameter that represents the property (and is used to assign deserialized value). Should be available; but there may be cases where caller cannot provide it and null is passed instead (in which case impls usually pass 'this' deserializer as is)

Returns:JsonDeserializer<?>

Doc from com.fasterxml.jackson.databind.deser.ContextualDeserializer.createContextual.

Deserializer to use for deserializing values of specified property; may be this instance or a new instance.

Annotations
@Override
createEmptyCollectionback to summary
protected abstract T createEmptyCollection()
deserializeback to summary
public T deserialize(JsonParser p, DeserializationContext ctxt) throws IOException

Implements abstract com.fasterxml.jackson.databind.JsonDeserializer.deserialize.

Doc from com.fasterxml.jackson.databind.JsonDeserializer.deserialize.

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 (p.currentToken() == JsonToken.START_OBJECT) {
         p.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).

Handling null values (JsonToken.VALUE_NULL)
: Note that this method is never called for the JSON null literal to avoid every deserializer from having to handle null values. Instead, the JsonDeserializer#getNullValue(DeserializationContext) method is called to produce a null value. To influence null handling, custom deserializers should override JsonDeserializer#getNullValue(DeserializationContext) and usually also JsonDeserializer#getNullAccessPattern().

Parameters
p:JsonParser

Parser used for reading JSON content

ctxt:DeserializationContext

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

Returns:T

Deserialized value

Annotations
@SuppressWarnings:unchecked
@Override
deserializeWithTypeback to summary
public Object deserializeWithType(JsonParser p, DeserializationContext ctxt, TypeDeserializer typeDeserializer) throws IOException

Overrides com.fasterxml.jackson.databind.deser.std.StdDeserializer.deserializeWithType.

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.

Parameters
typeDeserializer:TypeDeserializer

Doc from com.fasterxml.jackson.databind.JsonDeserializer.deserializeWithType.

Deserializer to use for handling type information

Annotations
@Override
logicalTypeback to summary
public LogicalType logicalType()

Overrides com.fasterxml.jackson.databind.JsonDeserializer.logicalType.

Doc from com.fasterxml.jackson.databind.JsonDeserializer.logicalType.

Method for accessing logical type of values this deserializer produces. Typically used for further configuring handling of values, for example, to find which coercions are legal.

Returns:LogicalType

Logical type of values this deserializer produces, if known; null if not

Annotations
@Override
withResolvedback to summary
public abstract PCollectionsCollectionDeserializer<T> withResolved(TypeDeserializer typeDeser, JsonDeserializer<?> valueDeser)

Overridable fluent factory method used for creating contextual instances.