Class StdDeserializer<T>

java.lang.Object

org.codehaus.jackson.map.JsonDeserializer<T>

org.codehaus.jackson.map.deser.std.StdDeserializer<T>

Direct Known Subclasses:

BeanDeserializer, ContainerDeserializerBase, DomElementJsonDeserializer, EnumMapDeserializer, EnumSetDeserializer, JsonNodeDeserializer, StdDeserializer, StdScalarDeserializer, StdScalarDeserializer, UntypedObjectDeserializer, XmlAdapterJsonDeserializer

public abstract class StdDeserializer<T>
extends JsonDeserializer<T>

Base class for common deserializers. Contains shared base functionality for dealing with primitive values, such as (re)parsing from String.

Since:

1.9 (moved from higher-level package)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	StdDeserializer.BigDecimalDeserializer
static class	StdDeserializer.BigIntegerDeserializer	This is bit trickier to implement efficiently, while avoiding overflow problems.
static final class	StdDeserializer.BooleanDeserializer
static final class	StdDeserializer.ByteDeserializer
static final class	StdDeserializer.CharacterDeserializer
static final class	StdDeserializer.DoubleDeserializer
static final class	StdDeserializer.FloatDeserializer
static final class	StdDeserializer.IntegerDeserializer
static final class	StdDeserializer.LongDeserializer
static final class	StdDeserializer.NumberDeserializer	For type Number.class, we can just rely on type mappings that plain JsonParser.getNumberValue() returns.
protected static class	StdDeserializer.PrimitiveOrWrapperDeserializer<T>
static final class	StdDeserializer.ShortDeserializer
static class	StdDeserializer.SqlDateDeserializer	Compared to plain old Date, SQL version is easier to deal with: mostly because it is more limited.
static class	StdDeserializer.StackTraceElementDeserializer

Nested classes/interfaces inherited from class JsonDeserializer

JsonDeserializer.None

Field Summary

Fields

Modifier and Type	Field	Description
protected final Class<?>	_valueClass	Type of values this deserializer handles: sometimes exact types, other time most specific supertype of types deserializer handles (which may be as generic as Object in some case)

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	StdDeserializer(Class<?> vc)
protected	StdDeserializer(JavaType valueType)

Method Summary

Modifier and Type	Method	Description
protected final Boolean	_parseBoolean(JsonParser jp, DeserializationContext ctxt)
protected final boolean	_parseBooleanFromNumber(JsonParser jp, DeserializationContext ctxt)
protected final boolean	_parseBooleanPrimitive(JsonParser jp, DeserializationContext ctxt)
protected Byte	_parseByte(JsonParser jp, DeserializationContext ctxt)
protected Date	_parseDate(JsonParser jp, DeserializationContext ctxt)
protected final Double	_parseDouble(JsonParser jp, DeserializationContext ctxt)
protected final double	_parseDoublePrimitive(JsonParser jp, DeserializationContext ctxt)
protected final Float	_parseFloat(JsonParser jp, DeserializationContext ctxt)
protected final float	_parseFloatPrimitive(JsonParser jp, DeserializationContext ctxt)
protected final Integer	_parseInteger(JsonParser jp, DeserializationContext ctxt)
protected final int	_parseIntPrimitive(JsonParser jp, DeserializationContext ctxt)
protected final Long	_parseLong(JsonParser jp, DeserializationContext ctxt)
protected final long	_parseLongPrimitive(JsonParser jp, DeserializationContext ctxt)
protected Short	_parseShort(JsonParser jp, DeserializationContext ctxt)
protected final short	_parseShortPrimitive(JsonParser jp, DeserializationContext ctxt)
Object	deserializeWithType(JsonParser jp, DeserializationContext ctxt, TypeDeserializer typeDeserializer)	Base implementation that does not assume specific type inclusion mechanism.
protected JsonDeserializer<Object>	findDeserializer(DeserializationConfig config, DeserializerProvider provider, JavaType type, BeanProperty property)	Helper method used to locate deserializers for properties the type this deserializer handles contains (usually for properties of bean types)
Class<?>	getValueClass()
JavaType	getValueType()	Exact structured type deserializer handles, if known.
protected void	handleUnknownProperty(JsonParser jp, DeserializationContext ctxt, Object instanceOrClass, String propName)	Method called to deal with a property that did not map to a known Bean property.
protected boolean	isDefaultSerializer(JsonDeserializer<?> deserializer)	Method that can be called to determine if given deserializer is the default deserializer Jackson uses; as opposed to a custom deserializer installed by a module or calling application.
protected static final double	parseDouble(String numStr)	Helper method for encapsulating calls to low-level double value parsing; single place just because we need a work-around that must be applied to all calls.
protected void	reportUnknownProperty(DeserializationContext ctxt, Object instanceOrClass, String fieldName)

Methods inherited from class JsonDeserializer

deserialize, deserialize, getEmptyValue, getNullValue, unwrappingDeserializer

Methods inherited from class Object

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

Field Details

_valueClass

protected final Class<?> _valueClass

Type of values this deserializer handles: sometimes exact types, other time most specific supertype of types deserializer handles (which may be as generic as Object in some case)

Constructor Details

StdDeserializer

protected StdDeserializer(Class<?> vc)

StdDeserializer

protected StdDeserializer(JavaType valueType)

Method Details

getValueClass

public Class<?> getValueClass()

getValueType

public JavaType getValueType()

Exact structured type deserializer handles, if known.

Default implementation just returns null.

isDefaultSerializer

protected boolean isDefaultSerializer(JsonDeserializer<?> deserializer)

Method that can be called to determine if given deserializer is the default deserializer Jackson uses; as opposed to a custom deserializer installed by a module or calling application. Determination is done using JacksonStdImpl annotation on deserializer class.

Since:

1.7

deserializeWithType

public Object deserializeWithType(JsonParser jp,
 DeserializationContext ctxt,
 TypeDeserializer typeDeserializer)
                           throws IOException,
JsonProcessingException

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 JsonDeserializer<T>

Parameters:

typeDeserializer - Deserializer to use for handling type information

Throws:

IOException

JsonProcessingException

_parseBooleanPrimitive

protected final boolean _parseBooleanPrimitive(JsonParser jp,
 DeserializationContext ctxt)
                                        throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseBoolean

protected final Boolean _parseBoolean(JsonParser jp,
 DeserializationContext ctxt)
                               throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseBooleanFromNumber

protected final boolean _parseBooleanFromNumber(JsonParser jp,
 DeserializationContext ctxt)
                                         throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseByte

protected Byte _parseByte(JsonParser jp,
 DeserializationContext ctxt)
                   throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseShort

protected Short _parseShort(JsonParser jp,
 DeserializationContext ctxt)
                     throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseShortPrimitive

protected final short _parseShortPrimitive(JsonParser jp,
 DeserializationContext ctxt)
                                    throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseIntPrimitive

protected final int _parseIntPrimitive(JsonParser jp,
 DeserializationContext ctxt)
                                throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseInteger

protected final Integer _parseInteger(JsonParser jp,
 DeserializationContext ctxt)
                               throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseLong

protected final Long _parseLong(JsonParser jp,
 DeserializationContext ctxt)
                         throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseLongPrimitive

protected final long _parseLongPrimitive(JsonParser jp,
 DeserializationContext ctxt)
                                  throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseFloat

protected final Float _parseFloat(JsonParser jp,
 DeserializationContext ctxt)
                           throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseFloatPrimitive

protected final float _parseFloatPrimitive(JsonParser jp,
 DeserializationContext ctxt)
                                    throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseDouble

protected final Double _parseDouble(JsonParser jp,
 DeserializationContext ctxt)
                             throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseDoublePrimitive

protected final double _parseDoublePrimitive(JsonParser jp,
 DeserializationContext ctxt)
                                      throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

_parseDate

protected Date _parseDate(JsonParser jp,
 DeserializationContext ctxt)
                   throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException

parseDouble

protected static final double parseDouble(String numStr)
                                   throws NumberFormatException

Helper method for encapsulating calls to low-level double value parsing; single place just because we need a work-around that must be applied to all calls.

Note: copied from org.codehaus.jackson.io.NumberUtil (to avoid dependency to version 1.8; except for String constants, but that gets compiled in bytecode here)

Throws:

NumberFormatException

findDeserializer

protected JsonDeserializer<Object> findDeserializer(DeserializationConfig config,
 DeserializerProvider provider,
 JavaType type,
 BeanProperty property)
                                             throws JsonMappingException

Helper method used to locate deserializers for properties the type this deserializer handles contains (usually for properties of bean types)

Parameters:

config - Active deserialization configuration

provider - Deserializer provider to use for actually finding deserializer(s)

type - Type of property to deserialize

property - Actual property object (field, method, constuctor parameter) used for passing deserialized values; provided so deserializer can be contextualized if necessary (since 1.7)

Throws:

JsonMappingException

handleUnknownProperty

protected void handleUnknownProperty(JsonParser jp,
 DeserializationContext ctxt,
 Object instanceOrClass,
 String propName)
                              throws IOException,
JsonProcessingException

Method called to deal with a property that did not map to a known Bean property. Method can deal with the problem as it sees fit (ignore, throw exception); but if it does return, it has to skip the matching Json content parser has.

NOTE: method signature was changed in version 1.5; explicit JsonParser must be passed since it may be something other than what context has. Prior versions did not include the first parameter.

Parameters:

jp - Parser that points to value of the unknown property

ctxt - Context for deserialization; allows access to the parser, error reporting functionality

instanceOrClass - Instance that is being populated by this deserializer, or if not known, Class that would be instantiated. If null, will assume type is what getValueClass() returns.

propName - Name of the property that can not be mapped

Throws:

IOException

JsonProcessingException

reportUnknownProperty

protected void reportUnknownProperty(DeserializationContext ctxt,
 Object instanceOrClass,
 String fieldName)
                              throws IOException,
JsonProcessingException

Throws:

IOException

JsonProcessingException