com.fasterxml.jackson.databind.ObjectMapper Maven / Gradle / Ivy
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package com.fasterxml.jackson.databind;
import java.io.*;
import java.lang.reflect.Type;
import java.net.URL;
import java.text.DateFormat;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicReference;
import com.fasterxml.jackson.annotation.*;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.core.io.CharacterEscapes;
import com.fasterxml.jackson.core.io.SegmentedStringWriter;
import com.fasterxml.jackson.core.io.SerializedString;
import com.fasterxml.jackson.core.type.ResolvedType;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.core.util.*;
import com.fasterxml.jackson.databind.cfg.BaseSettings;
import com.fasterxml.jackson.databind.cfg.ContextAttributes;
import com.fasterxml.jackson.databind.cfg.HandlerInstantiator;
import com.fasterxml.jackson.databind.cfg.MapperConfig;
import com.fasterxml.jackson.databind.deser.*;
import com.fasterxml.jackson.databind.introspect.*;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper;
import com.fasterxml.jackson.databind.jsontype.*;
import com.fasterxml.jackson.databind.jsontype.impl.StdSubtypeResolver;
import com.fasterxml.jackson.databind.jsontype.impl.StdTypeResolverBuilder;
import com.fasterxml.jackson.databind.node.*;
import com.fasterxml.jackson.databind.ser.*;
import com.fasterxml.jackson.databind.type.*;
import com.fasterxml.jackson.databind.util.RootNameLookup;
import com.fasterxml.jackson.databind.util.StdDateFormat;
import com.fasterxml.jackson.databind.util.TokenBuffer;
/**
* This mapper (or, data binder, or codec) provides functionality for
* converting between Java objects (instances of JDK provided core classes,
* beans), and matching JSON constructs.
* It will use instances of {@link JsonParser} and {@link JsonGenerator}
* for implementing actual reading/writing of JSON.
*
* The main conversion API is defined in {@link ObjectCodec}, so that
* implementation details of this class need not be exposed to
* streaming parser and generator classes.
*
* Note on caching: root-level deserializers are always cached, and accessed
* using full (generics-aware) type information. This is different from
* caching of referenced types, which is more limited and is done only
* for a subset of all deserializer types. The main reason for difference
* is that at root-level there is no incoming reference (and hence no
* referencing property, no referral information or annotations to
* produce differing deserializers), and that the performance impact
* greatest at root level (since it'll essentially cache the full
* graph of deserializers involved).
*/
public class ObjectMapper
extends ObjectCodec
implements Versioned,
java.io.Serializable // as of 2.1
{
private static final long serialVersionUID = 1L;
/*
/**********************************************************
/* Helper classes, enums
/**********************************************************
*/
/**
* Enumeration used with {@link ObjectMapper#enableDefaultTyping()}
* to specify what kind of types (classes) default typing should
* be used for. It will only be used if no explicit type information
* is found, but this enumeration further limits subset of those types.
*/
public enum DefaultTyping {
/**
* This value means that only properties that have
* {@link java.lang.Object} as declared type (including
* generic types without explicit type) will use default
* typing.
*/
JAVA_LANG_OBJECT,
/**
* Value that means that default typing will be used for
* properties with declared type of {@link java.lang.Object}
* or an abstract type (abstract class or interface).
* Note that this does not include array types.
*/
OBJECT_AND_NON_CONCRETE,
/**
* Value that means that default typing will be used for
* all types covered by {@link #OBJECT_AND_NON_CONCRETE}
* plus all array types for them.
*/
NON_CONCRETE_AND_ARRAYS,
/**
* Value that means that default typing will be used for
* all non-final types, with exception of small number of
* "natural" types (String, Boolean, Integer, Double), which
* can be correctly inferred from JSON; as well as for
* all arrays of non-final types.
*/
NON_FINAL
}
/**
* Customized {@link TypeResolverBuilder} that provides type resolver builders
* used with so-called "default typing"
* (see {@link ObjectMapper#enableDefaultTyping()} for details).
*
* Type resolver construction is based on configuration: implementation takes care
* of only providing builders in cases where type information should be applied.
* This is important since build calls may be sent for any and all types, and
* type information should NOT be applied to all of them.
*/
public static class DefaultTypeResolverBuilder
extends StdTypeResolverBuilder
implements java.io.Serializable
{
private static final long serialVersionUID = 1L;
/**
* Definition of what types is this default typer valid for.
*/
protected final DefaultTyping _appliesFor;
public DefaultTypeResolverBuilder(DefaultTyping t) {
_appliesFor = t;
}
@Override
public TypeDeserializer buildTypeDeserializer(DeserializationConfig config,
JavaType baseType, Collection subtypes)
{
return useForType(baseType) ? super.buildTypeDeserializer(config, baseType, subtypes) : null;
}
@Override
public TypeSerializer buildTypeSerializer(SerializationConfig config,
JavaType baseType, Collection subtypes)
{
return useForType(baseType) ? super.buildTypeSerializer(config, baseType, subtypes) : null;
}
/**
* Method called to check if the default type handler should be
* used for given type.
* Note: "natural types" (String, Boolean, Integer, Double) will never
* use typing; that is both due to them being concrete and final,
* and since actual serializers and deserializers will also ignore any
* attempts to enforce typing.
*/
public boolean useForType(JavaType t)
{
switch (_appliesFor) {
case NON_CONCRETE_AND_ARRAYS:
while (t.isArrayType()) {
t = t.getContentType();
}
// fall through
case OBJECT_AND_NON_CONCRETE:
return (t.getRawClass() == Object.class) || !t.isConcrete();
case NON_FINAL:
while (t.isArrayType()) {
t = t.getContentType();
}
return !t.isFinal(); // includes Object.class
default:
//case JAVA_LANG_OBJECT:
return (t.getRawClass() == Object.class);
}
}
}
/*
/**********************************************************
/* Internal constants, singletons
/**********************************************************
*/
// Quick little shortcut, to avoid having to use global TypeFactory instance...
private final static JavaType JSON_NODE_TYPE = SimpleType.constructUnsafe(JsonNode.class);
/* !!! 03-Apr-2009, tatu: Should try to avoid direct reference... but not
* sure what'd be simple and elegant way. So until then:
*/
protected final static ClassIntrospector DEFAULT_INTROSPECTOR = BasicClassIntrospector.instance;
// 16-May-2009, tatu: Ditto ^^^
protected final static AnnotationIntrospector DEFAULT_ANNOTATION_INTROSPECTOR = new JacksonAnnotationIntrospector();
protected final static VisibilityChecker STD_VISIBILITY_CHECKER = VisibilityChecker.Std.defaultInstance();
protected final static PrettyPrinter _defaultPrettyPrinter = new DefaultPrettyPrinter();
/**
* Base settings contain defaults used for all {@link ObjectMapper}
* instances.
*/
protected final static BaseSettings DEFAULT_BASE = new BaseSettings(DEFAULT_INTROSPECTOR,
DEFAULT_ANNOTATION_INTROSPECTOR, STD_VISIBILITY_CHECKER, null, TypeFactory.defaultInstance(),
null, StdDateFormat.instance, null,
Locale.getDefault(),
// TimeZone.getDefault()
TimeZone.getTimeZone("GMT"),
Base64Variants.getDefaultVariant() // 2.1
);
/*
/**********************************************************
/* Configuration settings, shared
/**********************************************************
*/
/**
* Factory used to create {@link JsonParser} and {@link JsonGenerator}
* instances as necessary.
*/
protected final JsonFactory _jsonFactory;
/**
* Specific factory used for creating {@link JavaType} instances;
* needed to allow modules to add more custom type handling
* (mostly to support types of non-Java JVM languages)
*/
protected TypeFactory _typeFactory;
/**
* Provider for values to inject in deserialized POJOs.
*/
protected InjectableValues _injectableValues;
/**
* Thing used for registering sub-types, resolving them to
* super/sub-types as needed.
*/
protected SubtypeResolver _subtypeResolver;
/**
* Cache for root names used when root-wrapping is enabled.
*/
protected final RootNameLookup _rootNames;
/*
/**********************************************************
/* Configuration settings: mix-in annotations
/**********************************************************
*/
/**
* Mapping that defines how to apply mix-in annotations: key is
* the type to received additional annotations, and value is the
* type that has annotations to "mix in".
*
* Annotations associated with the value classes will be used to
* override annotations of the key class, associated with the
* same field or method. They can be further masked by sub-classes:
* you can think of it as injecting annotations between the target
* class and its sub-classes (or interfaces)
*/
protected final HashMap> _mixInAnnotations;
/*
/**********************************************************
/* Configuration settings, serialization
/**********************************************************
*/
/**
* Configuration object that defines basic global
* settings for the serialization process
*/
protected SerializationConfig _serializationConfig;
/**
* Object that manages access to serializers used for serialization,
* including caching.
* It is configured with {@link #_serializerFactory} to allow
* for constructing custom serializers.
*
* Note: while serializers are only exposed {@link SerializerProvider},
* mappers and readers need to access additional API defined by
* {@link DefaultSerializerProvider}
*/
protected DefaultSerializerProvider _serializerProvider;
/**
* Serializer factory used for constructing serializers.
*/
protected SerializerFactory _serializerFactory;
/*
/**********************************************************
/* Configuration settings, deserialization
/**********************************************************
*/
/**
* Configuration object that defines basic global
* settings for the serialization process
*/
protected DeserializationConfig _deserializationConfig;
/**
* Blueprint context object; stored here to allow custom
* sub-classes. Contains references to objects needed for
* deserialization construction (cache, factory).
*/
protected DefaultDeserializationContext _deserializationContext;
/*
/**********************************************************
/* Caching
/**********************************************************
*/
/* Note: handling of serializers and deserializers is not symmetric;
* and as a result, only root-level deserializers can be cached here.
* This is mostly because typing and resolution for deserializers is
* fully static; whereas it is quite dynamic for serialization.
*/
/**
* We will use a separate main-level Map for keeping track
* of root-level deserializers. This is where most succesful
* cache lookups get resolved.
* Map will contain resolvers for all kinds of types, including
* container types: this is different from the component cache
* which will only cache bean deserializers.
*
* Given that we don't expect much concurrency for additions
* (should very quickly converge to zero after startup), let's
* explicitly define a low concurrency setting.
*
* Since version 1.5, these may are either "raw" deserializers (when
* no type information is needed for base type), or type-wrapped
* deserializers (if it is needed)
*/
final protected ConcurrentHashMap> _rootDeserializers
= new ConcurrentHashMap>(64, 0.6f, 2);
/*
/**********************************************************
/* Life-cycle: constructing instance
/**********************************************************
*/
/**
* Default constructor, which will construct the default
* {@link JsonFactory} as necessary, use
* {@link SerializerProvider} as its
* {@link SerializerProvider}, and
* {@link BeanSerializerFactory} as its
* {@link SerializerFactory}.
* This means that it
* can serialize all standard JDK types, as well as regular
* Java Beans (based on method names and Jackson-specific annotations),
* but does not support JAXB annotations.
*/
public ObjectMapper()
{
this(null, null, null);
}
/**
* Constructs instance that uses specified {@link JsonFactory}
* for constructing necessary {@link JsonParser}s and/or
* {@link JsonGenerator}s.
*/
public ObjectMapper(JsonFactory jf)
{
this(jf, null, null);
}
/**
* Copy-constructor, mostly used to support {@link #copy}.
*
* @since 2.1
*/
protected ObjectMapper(ObjectMapper src)
{
_jsonFactory = src._jsonFactory.copy();
_jsonFactory.setCodec(this);
_subtypeResolver = src._subtypeResolver;
_rootNames = new RootNameLookup();
_typeFactory = src._typeFactory;
_serializationConfig = src._serializationConfig;
HashMap> mixins = new HashMap>(src._mixInAnnotations);
_mixInAnnotations = mixins;
_serializationConfig = new SerializationConfig(src._serializationConfig, mixins);
_deserializationConfig = new DeserializationConfig(src._deserializationConfig, mixins);
_serializerProvider = src._serializerProvider;
_deserializationContext = src._deserializationContext;
// Default serializer factory is stateless, can just assign
_serializerFactory = src._serializerFactory;
}
/**
* Constructs instance that uses specified {@link JsonFactory}
* for constructing necessary {@link JsonParser}s and/or
* {@link JsonGenerator}s, and uses given providers for accessing
* serializers and deserializers.
*
* @param jf JsonFactory to use: if null, a new {@link MappingJsonFactory} will be constructed
* @param sp SerializerProvider to use: if null, a {@link SerializerProvider} will be constructed
* @param dc Blueprint deserialization context instance to use for creating
* actual context objects; if null, will construct standard
* {@link DeserializationContext}
*/
public ObjectMapper(JsonFactory jf,
DefaultSerializerProvider sp, DefaultDeserializationContext dc)
{
/* 02-Mar-2009, tatu: Important: we MUST default to using
* the mapping factory, otherwise tree serialization will
* have problems with POJONodes.
* 03-Jan-2010, tatu: and obviously we also must pass 'this',
* to create actual linking.
*/
if (jf == null) {
_jsonFactory = new MappingJsonFactory(this);
} else {
_jsonFactory = jf;
if (jf.getCodec() == null) { // as per [JACKSON-741]
_jsonFactory.setCodec(this);
}
}
_subtypeResolver = new StdSubtypeResolver();
_rootNames = new RootNameLookup();
// and default type factory is shared one
_typeFactory = TypeFactory.defaultInstance();
HashMap> mixins = new HashMap>();
_mixInAnnotations = mixins;
_serializationConfig = new SerializationConfig(DEFAULT_BASE,
_subtypeResolver, mixins);
_deserializationConfig = new DeserializationConfig(DEFAULT_BASE,
_subtypeResolver, mixins);
// Some overrides we may need
final boolean needOrder = _jsonFactory.requiresPropertyOrdering();
if (needOrder ^ _serializationConfig.isEnabled(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY)) {
configure(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY, needOrder);
}
_serializerProvider = (sp == null) ? new DefaultSerializerProvider.Impl() : sp;
_deserializationContext = (dc == null) ?
new DefaultDeserializationContext.Impl(BeanDeserializerFactory.instance) : dc;
// Default serializer factory is stateless, can just assign
_serializerFactory = BeanSerializerFactory.instance;
}
/**
* Method for creating a new {@link ObjectMapper} instance that
* has same initial configuration as this instance. Note that this
* also requires making a copy of the underlying {@link JsonFactory}
* instance.
*
* Method is typically
* used when multiple, differently configured mappers are needed.
* Although configuration is shared, cached serializers and deserializers
* are NOT shared, which means that the new instance may be re-configured
* before use; meaning that it behaves the same way as if an instance
* was constructed from scratch.
*
* @since 2.1
*/
public ObjectMapper copy()
{
_checkInvalidCopy(ObjectMapper.class);
return new ObjectMapper(this);
}
/**
* @since 2.1
* @param exp
*/
protected void _checkInvalidCopy(Class exp)
{
if (getClass() != exp) {
throw new IllegalStateException("Failed copy(): "+getClass().getName()
+" (version: "+version()+") does not override copy(); it has to");
}
}
/*
/**********************************************************
/* Versioned impl
/**********************************************************
*/
/**
* Method that will return version information stored in and read from jar
* that contains this class.
*/
@Override
public Version version() {
return com.fasterxml.jackson.databind.cfg.PackageVersion.VERSION;
}
/*
/**********************************************************
/* Module registration, discovery
/**********************************************************
*/
/**
* Method for registering a module that can extend functionality
* provided by this mapper; for example, by adding providers for
* custom serializers and deserializers.
*
* @param module Module to register
*/
public ObjectMapper registerModule(Module module)
{
/* Let's ensure we have access to name and version information,
* even if we do not have immediate use for either. This way we know
* that they will be available from beginning
*/
String name = module.getModuleName();
if (name == null) {
throw new IllegalArgumentException("Module without defined name");
}
Version version = module.version();
if (version == null) {
throw new IllegalArgumentException("Module without defined version");
}
final ObjectMapper mapper = this;
// And then call registration
module.setupModule(new Module.SetupContext()
{
// // // Accessors
@Override
public Version getMapperVersion() {
return version();
}
@SuppressWarnings("unchecked")
@Override
public C getOwner() {
// why do we need the cast here?!?
return (C) mapper;
}
@Override
public TypeFactory getTypeFactory() {
return _typeFactory;
}
@Override
public boolean isEnabled(MapperFeature f) {
return mapper.isEnabled(f);
}
@Override
public boolean isEnabled(DeserializationFeature f) {
return mapper.isEnabled(f);
}
@Override
public boolean isEnabled(SerializationFeature f) {
return mapper.isEnabled(f);
}
@Override
public boolean isEnabled(JsonFactory.Feature f) {
return mapper.isEnabled(f);
}
@Override
public boolean isEnabled(JsonParser.Feature f) {
return mapper.isEnabled(f);
}
@Override
public boolean isEnabled(JsonGenerator.Feature f) {
return mapper.isEnabled(f);
}
// // // Methods for registering handlers: deserializers
@Override
public void addDeserializers(Deserializers d) {
DeserializerFactory df = mapper._deserializationContext._factory.withAdditionalDeserializers(d);
mapper._deserializationContext = mapper._deserializationContext.with(df);
}
@Override
public void addKeyDeserializers(KeyDeserializers d) {
DeserializerFactory df = mapper._deserializationContext._factory.withAdditionalKeyDeserializers(d);
mapper._deserializationContext = mapper._deserializationContext.with(df);
}
@Override
public void addBeanDeserializerModifier(BeanDeserializerModifier modifier) {
DeserializerFactory df = mapper._deserializationContext._factory.withDeserializerModifier(modifier);
mapper._deserializationContext = mapper._deserializationContext.with(df);
}
// // // Methods for registering handlers: serializers
@Override
public void addSerializers(Serializers s) {
mapper._serializerFactory = mapper._serializerFactory.withAdditionalSerializers(s);
}
@Override
public void addKeySerializers(Serializers s) {
mapper._serializerFactory = mapper._serializerFactory.withAdditionalKeySerializers(s);
}
@Override
public void addBeanSerializerModifier(BeanSerializerModifier modifier) {
mapper._serializerFactory = mapper._serializerFactory.withSerializerModifier(modifier);
}
// // // Methods for registering handlers: other
@Override
public void addAbstractTypeResolver(AbstractTypeResolver resolver) {
DeserializerFactory df = mapper._deserializationContext._factory.withAbstractTypeResolver(resolver);
mapper._deserializationContext = mapper._deserializationContext.with(df);
}
@Override
public void addTypeModifier(TypeModifier modifier) {
TypeFactory f = mapper._typeFactory;
f = f.withModifier(modifier);
mapper.setTypeFactory(f);
}
@Override
public void addValueInstantiators(ValueInstantiators instantiators) {
DeserializerFactory df = mapper._deserializationContext._factory.withValueInstantiators(instantiators);
mapper._deserializationContext = mapper._deserializationContext.with(df);
}
@Override
public void setClassIntrospector(ClassIntrospector ci) {
mapper._deserializationConfig = mapper._deserializationConfig.with(ci);
mapper._serializationConfig = mapper._serializationConfig.with(ci);
}
@Override
public void insertAnnotationIntrospector(AnnotationIntrospector ai) {
mapper._deserializationConfig = mapper._deserializationConfig.withInsertedAnnotationIntrospector(ai);
mapper._serializationConfig = mapper._serializationConfig.withInsertedAnnotationIntrospector(ai);
}
@Override
public void appendAnnotationIntrospector(AnnotationIntrospector ai) {
mapper._deserializationConfig = mapper._deserializationConfig.withAppendedAnnotationIntrospector(ai);
mapper._serializationConfig = mapper._serializationConfig.withAppendedAnnotationIntrospector(ai);
}
@Override
public void registerSubtypes(Class... subtypes) {
mapper.registerSubtypes(subtypes);
}
@Override
public void registerSubtypes(NamedType... subtypes) {
mapper.registerSubtypes(subtypes);
}
@Override
public void setMixInAnnotations(Class target, Class mixinSource) {
mapper.addMixInAnnotations(target, mixinSource);
}
@Override
public void addDeserializationProblemHandler(DeserializationProblemHandler handler) {
mapper.addHandler(handler);
}
@Override
public void setNamingStrategy(PropertyNamingStrategy naming) {
mapper.setPropertyNamingStrategy(naming);
}
});
return this;
}
/**
* Convenience method for registering specified modules in order;
* functionally equivalent to:
*
* for (Module module : modules) {
* registerModule(module);
* }
*
*
* @since 2.2
*/
public ObjectMapper registerModules(Module... modules)
{
for (Module module : modules) {
registerModule(module);
}
return this;
}
/**
* Convenience method for registering specified modules in order;
* functionally equivalent to:
*
* for (Module module : modules) {
* registerModule(module);
* }
*
*
* @since 2.2
*/
public ObjectMapper registerModules(Iterable modules)
{
for (Module module : modules) {
registerModule(module);
}
return this;
}
/**
* Method for locating available methods, using JDK {@link ServiceLoader}
* facility, along with module-provided SPI.
*
* Note that method does not do any caching, so calls should be considered
* potentially expensive.
*
* @since 2.2
*/
public static List findModules() {
return findModules(null);
}
/**
* Method for locating available methods, using JDK {@link ServiceLoader}
* facility, along with module-provided SPI.
*
* Note that method does not do any caching, so calls should be considered
* potentially expensive.
*
* @since 2.2
*/
public static List findModules(ClassLoader classLoader)
{
ArrayList modules = new ArrayList();
ServiceLoader loader = (classLoader == null) ?
ServiceLoader.load(Module.class) : ServiceLoader.load(Module.class, classLoader);
for (Module module : loader) {
modules.add(module);
}
return modules;
}
/**
* Convenience method that is functionally equivalent to:
*
* mapper.registerModules(mapper.findModules());
*
*
* As with {@link #findModules()}, no caching is done for modules, so care
* needs to be taken to either create and share a single mapper instance;
* or to cache introspected set of modules.
*
* @since 2.2
*/
public ObjectMapper findAndRegisterModules() {
return registerModules(findModules());
}
/*
/**********************************************************
/* Configuration: main config object access
/**********************************************************
*/
/**
* Method that returns the shared default {@link SerializationConfig}
* object that defines configuration settings for serialization.
*
* Note that since instances are immutable, you can NOT change settings
* by accessing an instance and calling methods: this will simply create
* new instance of config object.
*/
public SerializationConfig getSerializationConfig() {
return _serializationConfig;
}
/**
* Method that returns
* the shared default {@link DeserializationConfig} object
* that defines configuration settings for deserialization.
*
* Note that since instances are immutable, you can NOT change settings
* by accessing an instance and calling methods: this will simply create
* new instance of config object.
*/
public DeserializationConfig getDeserializationConfig() {
return _deserializationConfig;
}
/**
* Method for getting current {@link DeserializationContext}.
*
* Note that since instances are immutable, you can NOT change settings
* by accessing an instance and calling methods: this will simply create
* new instance of context object.
*/
public DeserializationContext getDeserializationContext() {
return _deserializationContext;
}
/*
/**********************************************************
/* Configuration: ser/deser factory, provider access
/**********************************************************
*/
/**
* Method for setting specific {@link SerializerFactory} to use
* for constructing (bean) serializers.
*/
public ObjectMapper setSerializerFactory(SerializerFactory f) {
_serializerFactory = f;
return this;
}
/**
* Method for getting current {@link SerializerFactory}.
*
* Note that since instances are immutable, you can NOT change settings
* by accessing an instance and calling methods: this will simply create
* new instance of factory object.
*/
public SerializerFactory getSerializerFactory() {
return _serializerFactory;
}
/**
* Method for setting specific {@link SerializerProvider} to use
* for handling caching of {@link JsonSerializer} instances.
*/
public ObjectMapper setSerializerProvider(DefaultSerializerProvider p) {
_serializerProvider = p;
return this;
}
public SerializerProvider getSerializerProvider() {
return _serializerProvider;
}
/*
/**********************************************************
/* Configuration: mix-in annotations
/**********************************************************
*/
/**
* Method to use for defining mix-in annotations to use for augmenting
* annotations that processable (serializable / deserializable)
* classes have.
* Mixing in is done when introspecting class annotations and properties.
* Map passed contains keys that are target classes (ones to augment
* with new annotation overrides), and values that are source classes
* (have annotations to use for augmentation).
* Annotations from source classes (and their supertypes)
* will override
* annotations that target classes (and their super-types) have.
*/
public final void setMixInAnnotations(Map, Class> sourceMixins)
{
_mixInAnnotations.clear();
if (sourceMixins != null && sourceMixins.size() > 0) {
for (Map.Entry,Class> en : sourceMixins.entrySet()) {
_mixInAnnotations.put(new ClassKey(en.getKey()), en.getValue());
}
}
}
/**
* Method to use for adding mix-in annotations to use for augmenting
* specified class or interface. All annotations from
* mixinSource are taken to override annotations
* that target (or its supertypes) has.
*
* @param target Class (or interface) whose annotations to effectively override
* @param mixinSource Class (or interface) whose annotations are to
* be "added" to target's annotations, overriding as necessary
*/
public final void addMixInAnnotations(Class target, Class mixinSource)
{
_mixInAnnotations.put(new ClassKey(target), mixinSource);
}
public final Class findMixInClassFor(Class cls) {
return (_mixInAnnotations == null) ? null : _mixInAnnotations.get(new ClassKey(cls));
}
public final int mixInCount() {
return (_mixInAnnotations == null) ? 0 : _mixInAnnotations.size();
}
/*
/**********************************************************
/* Configuration, introspection
/**********************************************************
*/
/**
* Method for accessing currently configured visibility checker;
* object used for determining whether given property element
* (method, field, constructor) can be auto-detected or not.
*/
public VisibilityChecker getVisibilityChecker() {
return _serializationConfig.getDefaultVisibilityChecker();
}
/**
* Method for setting currently configured visibility checker;
* object used for determining whether given property element
* (method, field, constructor) can be auto-detected or not.
* This default checker is used if no per-class overrides
* are defined.
*/
public void setVisibilityChecker(VisibilityChecker vc) {
_deserializationConfig = _deserializationConfig.with(vc);
_serializationConfig = _serializationConfig.with(vc);
}
/**
* Convenience method that allows changing configuration for
* underlying {@link VisibilityChecker}s, to change details of what kinds of
* properties are auto-detected.
* Basically short cut for doing:
*
* mapper.setVisibilityChecker(
* mapper.getVisibilityChecker().withVisibility(forMethod, visibility)
* );
*
* one common use case would be to do:
*
* mapper.setVisibility(JsonMethod.FIELD, Visibility.ANY);
*
* which would make all member fields serializable without further annotations,
* instead of just public fields (default setting).
*
* @param forMethod Type of property descriptor affected (field, getter/isGetter,
* setter, creator)
* @param visibility Minimum visibility to require for the property descriptors of type
*
* @return Modified mapper instance (that is, "this"), to allow chaining
* of configuration calls
*/
public ObjectMapper setVisibility(PropertyAccessor forMethod, JsonAutoDetect.Visibility visibility)
{
_deserializationConfig = _deserializationConfig.withVisibility(forMethod, visibility);
_serializationConfig = _serializationConfig.withVisibility(forMethod, visibility);
return this;
}
/**
* Method for accessing subtype resolver in use.
*/
public SubtypeResolver getSubtypeResolver() {
return _subtypeResolver;
}
/**
* Method for setting custom subtype resolver to use.
*/
public ObjectMapper setSubtypeResolver(SubtypeResolver str) {
_subtypeResolver = str;
_deserializationConfig = _deserializationConfig.with(str);
_serializationConfig = _serializationConfig.with(str);
return this;
}
/**
* Method for changing {@link AnnotationIntrospector} used by this
* mapper instance for both serialization and deserialization
*/
public ObjectMapper setAnnotationIntrospector(AnnotationIntrospector ai) {
_serializationConfig = _serializationConfig.with(ai);
_deserializationConfig = _deserializationConfig.with(ai);
return this;
}
/**
* Method for changing {@link AnnotationIntrospector} instances used
* by this mapper instance for serialization and deserialization,
* specifying them separately so that different introspection can be
* used for different aspects
*
* @since 2.1
*
* @param serializerAI {@link AnnotationIntrospector} to use for configuring
* serialization
* @param deserializerAI {@link AnnotationIntrospector} to use for configuring
* deserialization
*/
public ObjectMapper setAnnotationIntrospectors(AnnotationIntrospector serializerAI,
AnnotationIntrospector deserializerAI) {
_serializationConfig = _serializationConfig.with(serializerAI);
_deserializationConfig = _deserializationConfig.with(deserializerAI);
return this;
}
/**
* Method for setting custom property naming strategy to use.
*/
public ObjectMapper setPropertyNamingStrategy(PropertyNamingStrategy s) {
_serializationConfig = _serializationConfig.with(s);
_deserializationConfig = _deserializationConfig.with(s);
return this;
}
/**
* Method for setting defalt POJO property inclusion strategy for serialization.
*/
public ObjectMapper setSerializationInclusion(JsonInclude.Include incl) {
_serializationConfig = _serializationConfig.withSerializationInclusion(incl);
return this;
}
/*
/**********************************************************
/* Type information configuration (1.5+)
/**********************************************************
*/
/**
* Convenience method that is equivalent to calling
*
* enableObjectTyping(DefaultTyping.OBJECT_AND_NON_CONCRETE);
*
*/
public ObjectMapper enableDefaultTyping() {
return enableDefaultTyping(DefaultTyping.OBJECT_AND_NON_CONCRETE);
}
/**
* Convenience method that is equivalent to calling
*
* enableObjectTyping(dti, JsonTypeInfo.As.WRAPPER_ARRAY);
*
*/
public ObjectMapper enableDefaultTyping(DefaultTyping dti) {
return enableDefaultTyping(dti, JsonTypeInfo.As.WRAPPER_ARRAY);
}
/**
* Method for enabling automatic inclusion of type information, needed
* for proper deserialization of polymorphic types (unless types
* have been annotated with {@link com.fasterxml.jackson.annotation.JsonTypeInfo}).
*
* @param applicability Defines kinds of types for which additional type information
* is added; see {@link DefaultTyping} for more information.
*/
public ObjectMapper enableDefaultTyping(DefaultTyping applicability, JsonTypeInfo.As includeAs)
{
TypeResolverBuilder typer = new DefaultTypeResolverBuilder(applicability);
// we'll always use full class name, when using defaulting
typer = typer.init(JsonTypeInfo.Id.CLASS, null);
typer = typer.inclusion(includeAs);
return setDefaultTyping(typer);
}
/**
* Method for enabling automatic inclusion of type information -- needed
* for proper deserialization of polymorphic types (unless types
* have been annotated with {@link com.fasterxml.jackson.annotation.JsonTypeInfo}) --
* using "As.PROPERTY" inclusion mechanism and specified property name
* to use for inclusion (default being "@class" since default type information
* always uses class name as type identifier)
*/
public ObjectMapper enableDefaultTypingAsProperty(DefaultTyping applicability, String propertyName)
{
TypeResolverBuilder typer = new DefaultTypeResolverBuilder(applicability);
// we'll always use full class name, when using defaulting
typer = typer.init(JsonTypeInfo.Id.CLASS, null);
typer = typer.inclusion(JsonTypeInfo.As.PROPERTY);
typer = typer.typeProperty(propertyName);
return setDefaultTyping(typer);
}
/**
* Method for disabling automatic inclusion of type information; if so, only
* explicitly annotated types (ones with
* {@link com.fasterxml.jackson.annotation.JsonTypeInfo}) will have
* additional embedded type information.
*/
public ObjectMapper disableDefaultTyping() {
return setDefaultTyping(null);
}
/**
* Method for enabling automatic inclusion of type information, using
* specified handler object for determining which types this affects,
* as well as details of how information is embedded.
*
* @param typer Type information inclusion handler
*/
public ObjectMapper setDefaultTyping(TypeResolverBuilder typer) {
_deserializationConfig = _deserializationConfig.with(typer);
_serializationConfig = _serializationConfig.with(typer);
return this;
}
/**
* Method for registering specified class as a subtype, so that
* typename-based resolution can link supertypes to subtypes
* (as an alternative to using annotations).
* Type for given class is determined from appropriate annotation;
* or if missing, default name (unqualified class name)
*/
public void registerSubtypes(Class... classes) {
getSubtypeResolver().registerSubtypes(classes);
}
/**
* Method for registering specified class as a subtype, so that
* typename-based resolution can link supertypes to subtypes
* (as an alternative to using annotations).
* Name may be provided as part of argument, but if not will
* be based on annotations or use default name (unqualified
* class name).
*/
public void registerSubtypes(NamedType... types) {
getSubtypeResolver().registerSubtypes(types);
}
/*
/**********************************************************
/* Configuration, basic type handling
/**********************************************************
*/
/**
* Accessor for getting currently configured {@link TypeFactory} instance.
*/
public TypeFactory getTypeFactory() {
return _typeFactory;
}
/**
* Method that can be used to override {@link TypeFactory} instance
* used by this mapper.
*
* Note: will also set {@link TypeFactory} that deserialization and
* serialization config objects use.
*/
public ObjectMapper setTypeFactory(TypeFactory f)
{
_typeFactory = f;
_deserializationConfig = _deserializationConfig.with(f);
_serializationConfig = _serializationConfig.with(f);
return this;
}
/**
* Convenience method for constructing {@link JavaType} out of given
* type (typically java.lang.Class), but without explicit
* context.
*/
public JavaType constructType(Type t) {
return _typeFactory.constructType(t);
}
/*
/**********************************************************
/* Configuration, deserialization
/**********************************************************
*/
/**
* Method for specifying {@link JsonNodeFactory} to use for
* constructing root level tree nodes (via method
* {@link #createObjectNode}
*/
public ObjectMapper setNodeFactory(JsonNodeFactory f) {
_deserializationConfig = _deserializationConfig.with(f);
return this;
}
/**
* Method for adding specified {@link DeserializationProblemHandler}
* to be used for handling specific problems during deserialization.
*/
public ObjectMapper addHandler(DeserializationProblemHandler h) {
_deserializationConfig = _deserializationConfig.withHandler(h);
return this;
}
/**
* Method for removing all registered {@link DeserializationProblemHandler}s
* instances from this mapper.
*/
public ObjectMapper clearProblemHandlers() {
_deserializationConfig = _deserializationConfig.withNoProblemHandlers();
return this;
}
/*
/**********************************************************
/* Configuration, serialization
/**********************************************************
*/
/**
* Convenience method that is equivalent to:
*
* mapper.setFilters(mapper.getSerializationConfig().withFilters(filterProvider));
*
*
* Note that usually it is better to use method {@link #writer(FilterProvider)};
* however, sometimes
* this method is more convenient. For example, some frameworks only allow configuring
* of ObjectMapper instances and not ObjectWriters.
*/
public void setFilters(FilterProvider filterProvider) {
_serializationConfig = _serializationConfig.withFilters(filterProvider);
}
/**
* Method that will configure default {@link Base64Variant} that
* byte[] serializers and deserializers will use.
*
* @param v Base64 variant to use
*
* @return This mapper, for convenience to allow chaining
*
* @since 2.1
*/
public ObjectMapper setBase64Variant(Base64Variant v) {
_serializationConfig = _serializationConfig.with(v);
_deserializationConfig = _deserializationConfig.with(v);
return this;
}
/*
/**********************************************************
/* Configuration, other
/**********************************************************
*/
/**
* Method that can be used to get hold of {@link JsonFactory} that this
* mapper uses if it needs to construct {@link JsonParser}s
* and/or {@link JsonGenerator}s.
*
* @return {@link JsonFactory} that this mapper uses when it needs to
* construct Json parser and generators
*/
@Override
public JsonFactory getFactory() { return _jsonFactory; }
/**
* @deprecated Since 2.1: Use {@link #getFactory} instead
*/
@Deprecated
@Override
public JsonFactory getJsonFactory() { return _jsonFactory; }
/**
* Method for configuring the default {@link DateFormat} to use when serializing time
* values as Strings, and deserializing from JSON Strings.
* This is preferably to directly modifying {@link SerializationConfig} and
* {@link DeserializationConfig} instances.
* If you need per-request configuration, use {@link #writer(DateFormat)} to
* create properly configured {@link ObjectWriter} and use that; this because
* {@link ObjectWriter}s are thread-safe whereas ObjectMapper itself is only
* thread-safe when configuring methods (such as this one) are NOT called.
*/
public ObjectMapper setDateFormat(DateFormat dateFormat)
{
_deserializationConfig = _deserializationConfig.with(dateFormat);
_serializationConfig = _serializationConfig.with(dateFormat);
return this;
}
/**
* Method for configuring {@link HandlerInstantiator} to use for creating
* instances of handlers (such as serializers, deserializers, type and type
* id resolvers), given a class.
*
* @param hi Instantiator to use; if null, use the default implementation
*/
public Object setHandlerInstantiator(HandlerInstantiator hi)
{
_deserializationConfig = _deserializationConfig.with(hi);
_serializationConfig = _serializationConfig.with(hi);
return this;
}
/**
* Method for configuring {@link InjectableValues} which used to find
* values to inject.
*/
public ObjectMapper setInjectableValues(InjectableValues injectableValues) {
_injectableValues = injectableValues;
return this;
}
/**
* Method for overriding default locale to use for formatting.
* Default value used is {@link Locale#getDefault()}.
*/
public ObjectMapper setLocale(Locale l) {
_deserializationConfig = _deserializationConfig.with(l);
_serializationConfig = _serializationConfig.with(l);
return this;
}
/**
* Method for overriding default TimeZone to use for formatting.
* Default value used is {@link TimeZone#getDefault()}.
*/
public ObjectMapper setTimeZone(TimeZone tz) {
_deserializationConfig = _deserializationConfig.with(tz);
_serializationConfig = _serializationConfig.with(tz);
return this;
}
/*
/**********************************************************
/* Configuration, simple features
/**********************************************************
*/
/**
* Method for changing state of an on/off mapper feature for
* this mapper instance.
*/
public ObjectMapper configure(MapperFeature f, boolean state) {
_serializationConfig = state ?
_serializationConfig.with(f) : _serializationConfig.without(f);
_deserializationConfig = state ?
_deserializationConfig.with(f) : _deserializationConfig.without(f);
return this;
}
/**
* Method for changing state of an on/off serialization feature for
* this object mapper.
*/
public ObjectMapper configure(SerializationFeature f, boolean state) {
_serializationConfig = state ?
_serializationConfig.with(f) : _serializationConfig.without(f);
return this;
}
/**
* Method for changing state of an on/off deserialization feature for
* this object mapper.
*/
public ObjectMapper configure(DeserializationFeature f, boolean state) {
_deserializationConfig = state ?
_deserializationConfig.with(f) : _deserializationConfig.without(f);
return this;
}
/**
* Method for changing state of an on/off {@link JsonParser} feature for
* {@link JsonFactory} instance this object mapper uses.
*
* This is method is basically a shortcut method for calling
* {@link JsonFactory#enable} on the shared
* {@link JsonFactory} this mapper uses (which is accessible
* using {@link #getJsonFactory}).
*/
public ObjectMapper configure(JsonParser.Feature f, boolean state) {
_jsonFactory.configure(f, state);
return this;
}
/**
* Method for changing state of an on/off {@link JsonGenerator} feature for
* {@link JsonFactory} instance this object mapper uses.
*
* This is method is basically a shortcut method for calling
* {@link JsonFactory#enable} on the shared
* {@link JsonFactory} this mapper uses (which is accessible
* using {@link #getJsonFactory}).
*/
public ObjectMapper configure(JsonGenerator.Feature f, boolean state) {
_jsonFactory.configure(f, state);
return this;
}
/**
* Method for enabling specified {@link MapperConfig} features.
* Modifies and returns this instance; no new object is created.
*/
public ObjectMapper enable(MapperFeature... f) {
_deserializationConfig = _deserializationConfig.with(f);
_serializationConfig = _serializationConfig.with(f);
return this;
}
/**
* Method for enabling specified {@link DeserializationConfig} features.
* Modifies and returns this instance; no new object is created.
*/
public ObjectMapper disable(MapperFeature... f) {
_deserializationConfig = _deserializationConfig.without(f);
_serializationConfig = _serializationConfig.without(f);
return this;
}
/**
* Method for enabling specified {@link DeserializationConfig} features.
* Modifies and returns this instance; no new object is created.
*/
public ObjectMapper enable(DeserializationFeature feature) {
_deserializationConfig = _deserializationConfig.with(feature);
return this;
}
/**
* Method for enabling specified {@link DeserializationConfig} features.
* Modifies and returns this instance; no new object is created.
*/
public ObjectMapper enable(DeserializationFeature first,
DeserializationFeature... f) {
_deserializationConfig = _deserializationConfig.with(first, f);
return this;
}
/**
* Method for enabling specified {@link DeserializationConfig} features.
* Modifies and returns this instance; no new object is created.
*/
public ObjectMapper disable(DeserializationFeature feature) {
_deserializationConfig = _deserializationConfig.without(feature);
return this;
}
/**
* Method for enabling specified {@link DeserializationConfig} features.
* Modifies and returns this instance; no new object is created.
*/
public ObjectMapper disable(DeserializationFeature first,
DeserializationFeature... f) {
_deserializationConfig = _deserializationConfig.without(first, f);
return this;
}
/**
* Method for enabling specified {@link DeserializationConfig} feature.
* Modifies and returns this instance; no new object is created.
*/
public ObjectMapper enable(SerializationFeature f) {
_serializationConfig = _serializationConfig.with(f);
return this;
}
/**
* Method for enabling specified {@link DeserializationConfig} features.
* Modifies and returns this instance; no new object is created.
*/
public ObjectMapper enable(SerializationFeature first,
SerializationFeature... f) {
_serializationConfig = _serializationConfig.with(first, f);
return this;
}
/**
* Method for enabling specified {@link DeserializationConfig} features.
* Modifies and returns this instance; no new object is created.
*/
public ObjectMapper disable(SerializationFeature f) {
_serializationConfig = _serializationConfig.without(f);
return this;
}
/**
* Method for enabling specified {@link DeserializationConfig} features.
* Modifies and returns this instance; no new object is created.
*/
public ObjectMapper disable(SerializationFeature first,
SerializationFeature... f) {
_serializationConfig = _serializationConfig.without(first, f);
return this;
}
/**
* Method for checking whether given Mapper
* feature is enabled.
*/
public boolean isEnabled(MapperFeature f) {
// ok to use either one, should be kept in sync
return _serializationConfig.isEnabled(f);
}
/**
* Method for checking whether given serialization-specific
* feature is enabled.
*/
public boolean isEnabled(SerializationFeature f) {
return _serializationConfig.isEnabled(f);
}
/**
* Method for checking whether given deserialization-specific
* feature is enabled.
*/
public boolean isEnabled(DeserializationFeature f) {
return _deserializationConfig.isEnabled(f);
}
/**
* Convenience method, equivalent to:
*
* getJsonFactory().isEnabled(f);
*
*/
public boolean isEnabled(JsonFactory.Feature f) {
return _jsonFactory.isEnabled(f);
}
/**
* Convenience method, equivalent to:
*
* getJsonFactory().isEnabled(f);
*
*/
public boolean isEnabled(JsonParser.Feature f) {
return _jsonFactory.isEnabled(f);
}
/**
* Convenience method, equivalent to:
*
* getJsonFactory().isEnabled(f);
*
*/
public boolean isEnabled(JsonGenerator.Feature f) {
return _jsonFactory.isEnabled(f);
}
/**
* Method that can be used to get hold of {@link JsonNodeFactory}
* that this mapper will use when directly constructing
* root {@link JsonNode} instances for Trees.
*
* Note: this is just a shortcut for calling
*
* getDeserializationConfig().getNodeFactory()
*
*/
public JsonNodeFactory getNodeFactory() {
return _deserializationConfig.getNodeFactory();
}
/*
/**********************************************************
/* Public API (from ObjectCodec): deserialization
/* (mapping from JSON to Java types);
/* main methods
/**********************************************************
*/
/**
* Method to deserialize JSON content into a non-container
* type (it can be an array type, however): typically a bean, array
* or a wrapper type (like {@link java.lang.Boolean}).
*
* Note: this method should NOT be used if the result type is a
* container ({@link java.util.Collection} or {@link java.util.Map}.
* The reason is that due to type erasure, key and value types
* can not be introspected when using this method.
*/
@Override
@SuppressWarnings("unchecked")
public T readValue(JsonParser jp, Class valueType)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readValue(getDeserializationConfig(), jp, _typeFactory.constructType(valueType));
}
/**
* Method to deserialize JSON content into a Java type, reference
* to which is passed as argument. Type is passed using so-called
* "super type token" (see )
* and specifically needs to be used if the root type is a
* parameterized (generic) container type.
*/
@Override
@SuppressWarnings("unchecked")
public T readValue(JsonParser jp, TypeReference valueTypeRef)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readValue(getDeserializationConfig(), jp, _typeFactory.constructType(valueTypeRef));
}
/**
* Method to deserialize JSON content into a Java type, reference
* to which is passed as argument. Type is passed using
* Jackson specific type; instance of which can be constructed using
* {@link TypeFactory}.
*/
@Override
@SuppressWarnings("unchecked")
public final T readValue(JsonParser jp, ResolvedType valueType)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readValue(getDeserializationConfig(), jp, (JavaType) valueType);
}
/**
* Type-safe overloaded method, basically alias for {@link #readValue(JsonParser, ResolvedType)}.
*/
@SuppressWarnings("unchecked")
public T readValue(JsonParser jp, JavaType valueType)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readValue(getDeserializationConfig(), jp, valueType);
}
/**
* Method to deserialize JSON content as tree expressed
* using set of {@link JsonNode} instances. Returns
* root of the resulting tree (where root can consist
* of just a single node if the current event is a
* value event, not container).
*/
@Override
public T readTree(JsonParser jp)
throws IOException, JsonProcessingException
{
/* 02-Mar-2009, tatu: One twist; deserialization provider
* will map JSON null straight into Java null. But what
* we want to return is the "null node" instead.
*/
/* 05-Aug-2011, tatu: Also, must check for EOF here before
* calling readValue(), since that'll choke on it otherwise
*/
DeserializationConfig cfg = getDeserializationConfig();
JsonToken t = jp.getCurrentToken();
if (t == null) {
t = jp.nextToken();
if (t == null) {
return null;
}
}
JsonNode n = (JsonNode) _readValue(cfg, jp, JSON_NODE_TYPE);
if (n == null) {
n = getNodeFactory().nullNode();
}
@SuppressWarnings("unchecked")
T result = (T) n;
return result;
}
/**
* Method for reading sequence of Objects from parser stream.
* Sequence can be either root-level "unwrapped" sequence (without surrounding
* JSON array), or a sequence contained in a JSON Array.
* In either case {@link JsonParser} must point to the first token of
* the first element, OR not point to any token (in which case it is advanced
* to the next token). This means, specifically, that for wrapped sequences,
* parser MUST NOT point to the surrounding START_ARRAY but rather
* to the token following it.
*
* Note that {@link ObjectReader} has more complete set of variants.
*/
@Override
public MappingIterator readValues(JsonParser jp, ResolvedType valueType)
throws IOException, JsonProcessingException
{
return readValues(jp, (JavaType) valueType);
}
/**
* Type-safe overloaded method, basically alias for {@link #readValues(JsonParser, ResolvedType)}.
*/
public MappingIterator readValues(JsonParser jp, JavaType valueType)
throws IOException, JsonProcessingException
{
DeserializationConfig config = getDeserializationConfig();
DeserializationContext ctxt = createDeserializationContext(jp, config);
JsonDeserializer deser = _findRootDeserializer(ctxt, valueType);
// false -> do NOT close JsonParser (since caller passed it)
return new MappingIterator(valueType, jp, ctxt, deser,
false, null);
}
/**
* Type-safe overloaded method, basically alias for {@link #readValues(JsonParser, ResolvedType)}.
*/
@Override
public MappingIterator readValues(JsonParser jp, Class valueType)
throws IOException, JsonProcessingException
{
return readValues(jp, _typeFactory.constructType(valueType));
}
/**
* Method for reading sequence of Objects from parser stream.
*/
@Override
public MappingIterator readValues(JsonParser jp, TypeReference valueTypeRef)
throws IOException, JsonProcessingException
{
return readValues(jp, _typeFactory.constructType(valueTypeRef));
}
/*
/**********************************************************
/* Public API not included in ObjectCodec: deserialization
/* (mapping from JSON to Java types)
/**********************************************************
*/
/**
* Method to deserialize JSON content as tree expressed
* using set of {@link JsonNode} instances.
* Returns root of the resulting tree (where root can consist
* of just a single node if the current event is a
* value event, not container).
*
* @param in Input stream used to read JSON content
* for building the JSON tree.
*/
public JsonNode readTree(InputStream in)
throws IOException, JsonProcessingException
{
JsonNode n = (JsonNode) _readMapAndClose(_jsonFactory.createParser(in), JSON_NODE_TYPE);
return (n == null) ? NullNode.instance : n;
}
/**
* Method to deserialize JSON content as tree expressed
* using set of {@link JsonNode} instances.
* Returns root of the resulting tree (where root can consist
* of just a single node if the current event is a
* value event, not container).
*
* @param r Reader used to read JSON content
* for building the JSON tree.
*/
public JsonNode readTree(Reader r)
throws IOException, JsonProcessingException
{
JsonNode n = (JsonNode) _readMapAndClose(_jsonFactory.createParser(r), JSON_NODE_TYPE);
return (n == null) ? NullNode.instance : n;
}
/**
* Method to deserialize JSON content as tree expressed using set of {@link JsonNode} instances.
* Returns root of the resulting tree (where root can consist of just a single node if the current
* event is a value event, not container).
*
* @param content JSON content to parse to build the JSON tree.
*/
public JsonNode readTree(String content)
throws IOException, JsonProcessingException
{
JsonNode n = (JsonNode) _readMapAndClose(_jsonFactory.createParser(content), JSON_NODE_TYPE);
return (n == null) ? NullNode.instance : n;
}
/**
* Method to deserialize JSON content as tree expressed using set of {@link JsonNode} instances.
* Returns root of the resulting tree (where root can consist of just a single node if the current
* event is a value event, not container).
*
* @param content JSON content to parse to build the JSON tree.
*/
public JsonNode readTree(byte[] content)
throws IOException, JsonProcessingException
{
JsonNode n = (JsonNode) _readMapAndClose(_jsonFactory.createParser(content), JSON_NODE_TYPE);
return (n == null) ? NullNode.instance : n;
}
/**
* Method to deserialize JSON content as tree expressed using set of {@link JsonNode} instances.
* Returns root of the resulting tree (where root can consist of just a single node if the current
* event is a value event, not container).
*
* @param file File of which contents to parse as JSON for building a tree instance
*/
public JsonNode readTree(File file)
throws IOException, JsonProcessingException
{
JsonNode n = (JsonNode) _readMapAndClose(_jsonFactory.createParser(file), JSON_NODE_TYPE);
return (n == null) ? NullNode.instance : n;
}
/**
* Method to deserialize JSON content as tree expressed using set of {@link JsonNode} instances.
* Returns root of the resulting tree (where root can consist of just a single node if the current
* event is a value event, not container).
*
* @param source URL to use for fetching contents to parse as JSON for building a tree instance
*/
public JsonNode readTree(URL source)
throws IOException, JsonProcessingException
{
JsonNode n = (JsonNode) _readMapAndClose(_jsonFactory.createParser(source), JSON_NODE_TYPE);
return (n == null) ? NullNode.instance : n;
}
/*
/**********************************************************
/* Public API (from ObjectCodec): serialization
/* (mapping from Java types to Json)
/**********************************************************
*/
/**
* Method that can be used to serialize any Java value as
* JSON output, using provided {@link JsonGenerator}.
*/
@Override
public void writeValue(JsonGenerator jgen, Object value)
throws IOException, JsonGenerationException, JsonMappingException
{
SerializationConfig config = getSerializationConfig();
// 10-Aug-2012, tatu: as per [Issue#12], must handle indentation:
if (config.isEnabled(SerializationFeature.INDENT_OUTPUT)) {
jgen.useDefaultPrettyPrinter();
}
if (config.isEnabled(SerializationFeature.CLOSE_CLOSEABLE) && (value instanceof Closeable)) {
_writeCloseableValue(jgen, value, config);
} else {
_serializerProvider(config).serializeValue(jgen, value);
if (config.isEnabled(SerializationFeature.FLUSH_AFTER_WRITE_VALUE)) {
jgen.flush();
}
}
}
/*
/**********************************************************
/* Public API (from TreeCodec via ObjectCodec): Tree Model support
/**********************************************************
*/
@Override
public void writeTree(JsonGenerator jgen, TreeNode rootNode)
throws IOException, JsonProcessingException
{
SerializationConfig config = getSerializationConfig();
_serializerProvider(config).serializeValue(jgen, rootNode);
if (config.isEnabled(SerializationFeature.FLUSH_AFTER_WRITE_VALUE)) {
jgen.flush();
}
}
/**
* Method to serialize given JSON Tree, using generator
* provided.
*/
public void writeTree(JsonGenerator jgen, JsonNode rootNode)
throws IOException, JsonProcessingException
{
SerializationConfig config = getSerializationConfig();
_serializerProvider(config).serializeValue(jgen, rootNode);
if (config.isEnabled(SerializationFeature.FLUSH_AFTER_WRITE_VALUE)) {
jgen.flush();
}
}
/**
*
* Note: return type is co-variant, as basic ObjectCodec
* abstraction can not refer to concrete node types (as it's
* part of core package, whereas impls are part of mapper
* package)
*/
@Override
public ObjectNode createObjectNode() {
return _deserializationConfig.getNodeFactory().objectNode();
}
/**
*
* Note: return type is co-variant, as basic ObjectCodec
* abstraction can not refer to concrete node types (as it's
* part of core package, whereas impls are part of mapper
* package)
*/
@Override
public ArrayNode createArrayNode() {
return _deserializationConfig.getNodeFactory().arrayNode();
}
/**
* Method for constructing a {@link JsonParser} out of JSON tree
* representation.
*
* @param n Root node of the tree that resulting parser will read from
*/
@Override
public JsonParser treeAsTokens(TreeNode n)
{
return new TreeTraversingParser((JsonNode) n, this);
}
/**
* Convenience conversion method that will bind data given JSON tree
* contains into specific value (usually bean) type.
*
* Functionally equivalent to:
*
* objectMapper.convertValue(n, valueClass);
*
*/
@SuppressWarnings("unchecked")
@Override
public T treeToValue(TreeNode n, Class valueType)
throws JsonProcessingException
{
try {
// [Issue-11]: Simple cast when we just want to cast to, say, ObjectNode
// ... one caveat; while everything is Object.class, let's not take shortcut
if (valueType != Object.class && valueType.isAssignableFrom(n.getClass())) {
return (T) n;
}
return readValue(treeAsTokens(n), valueType);
} catch (JsonProcessingException e) {
throw e;
} catch (IOException e) { // should not occur, no real i/o...
throw new IllegalArgumentException(e.getMessage(), e);
}
}
/**
* Reverse of {@link #treeToValue}; given a value (usually bean), will
* construct equivalent JSON Tree representation. Functionally similar
* to serializing value into JSON and parsing JSON as tree, but
* more efficient.
*
* NOTE: one known difference from actual serialization is that so-called
* "raw values" are not supported -- since they are opaque sequence of
* bytes to include (which may or may not be supported by the backend)
* they can not be converted using this method. It may be possible to
* support conversions using full serialization, if raw values must be
* preserved.
*
* @param Actual node type; usually either basic {@link JsonNode} or
* {@link com.fasterxml.jackson.databind.node.ObjectNode}
* @param fromValue Bean value to convert
* @return Root node of the resulting JSON tree
*/
@SuppressWarnings({ "unchecked", "resource" })
public T valueToTree(Object fromValue)
throws IllegalArgumentException
{
if (fromValue == null) return null;
TokenBuffer buf = new TokenBuffer(this, false);
JsonNode result;
try {
writeValue(buf, fromValue);
JsonParser jp = buf.asParser();
result = readTree(jp);
jp.close();
} catch (IOException e) { // should not occur, no real i/o...
throw new IllegalArgumentException(e.getMessage(), e);
}
return (T) result;
}
/*
/**********************************************************
/* Extended Public API, accessors
/**********************************************************
*/
/**
* Method that can be called to check whether mapper thinks
* it could serialize an instance of given Class.
* Check is done
* by checking whether a serializer can be found for the type.
*
* NOTE: since this method does NOT throw exceptions, but internal
* processing may, caller usually has little information as to why
* serialization would fail.
*
* @return True if mapper can find a serializer for instances of
* given class (potentially serializable), false otherwise (not
* serializable)
*/
public boolean canSerialize(Class type) {
return _serializerProvider(getSerializationConfig()).hasSerializerFor(type, null);
}
/**
* Method similar to {@link #canSerialize(Class)} but that can return
* actual {@link Throwable} that was thrown when trying to construct
* serializer: this may be useful in figuring out what the actual problem is.
*
* @since 2.3
*/
public boolean canSerialize(Class type, AtomicReference cause) {
return _serializerProvider(getSerializationConfig()).hasSerializerFor(type, cause);
}
/**
* Method that can be called to check whether mapper thinks
* it could deserialize an Object of given type.
* Check is done
* by checking whether a deserializer can be found for the type.
*
* @return True if mapper can find a serializer for instances of
* given class (potentially serializable), false otherwise (not
* serializable)
*/
public boolean canDeserialize(JavaType type)
{
return createDeserializationContext(null,
getDeserializationConfig()).hasValueDeserializerFor(type, null);
}
/**
* Method similar to {@link #canDeserialize(JavaType)} but that can return
* actual {@link Throwable} that was thrown when trying to construct
* serializer: this may be useful in figuring out what the actual problem is.
*
* @since 2.3
*/
public boolean canDeserialize(JavaType type, AtomicReference cause)
{
return createDeserializationContext(null,
getDeserializationConfig()).hasValueDeserializerFor(type, cause);
}
/*
/**********************************************************
/* Extended Public API, deserialization,
/* convenience methods
/**********************************************************
*/
@SuppressWarnings("unchecked")
public T readValue(File src, Class valueType)
throws IOException, JsonParseException, JsonMappingException
{
// !!! TODO
// _setupClassLoaderForDeserialization(valueType);
return (T) _readMapAndClose(_jsonFactory.createParser(src), _typeFactory.constructType(valueType));
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public T readValue(File src, TypeReference valueTypeRef)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src), _typeFactory.constructType(valueTypeRef));
}
@SuppressWarnings("unchecked")
public T readValue(File src, JavaType valueType)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src), valueType);
}
@SuppressWarnings("unchecked")
public T readValue(URL src, Class valueType)
throws IOException, JsonParseException, JsonMappingException
{
// !!! TODO
// _setupClassLoaderForDeserialization(valueType);
return (T) _readMapAndClose(_jsonFactory.createParser(src), _typeFactory.constructType(valueType));
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public T readValue(URL src, TypeReference valueTypeRef)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src), _typeFactory.constructType(valueTypeRef));
}
@SuppressWarnings("unchecked")
public T readValue(URL src, JavaType valueType)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src), valueType);
}
@SuppressWarnings("unchecked")
public T readValue(String content, Class valueType)
throws IOException, JsonParseException, JsonMappingException
{
// !!! TODO
// _setupClassLoaderForDeserialization(valueType);
return (T) _readMapAndClose(_jsonFactory.createParser(content), _typeFactory.constructType(valueType));
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public T readValue(String content, TypeReference valueTypeRef)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(content), _typeFactory.constructType(valueTypeRef));
}
@SuppressWarnings("unchecked")
public T readValue(String content, JavaType valueType)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(content), valueType);
}
@SuppressWarnings("unchecked")
public T readValue(Reader src, Class valueType)
throws IOException, JsonParseException, JsonMappingException
{
// !!! TODO
// _setupClassLoaderForDeserialization(valueType);
return (T) _readMapAndClose(_jsonFactory.createParser(src), _typeFactory.constructType(valueType));
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public T readValue(Reader src, TypeReference valueTypeRef)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src), _typeFactory.constructType(valueTypeRef));
}
@SuppressWarnings("unchecked")
public T readValue(Reader src, JavaType valueType)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src), valueType);
}
@SuppressWarnings("unchecked")
public T readValue(InputStream src, Class valueType)
throws IOException, JsonParseException, JsonMappingException
{
// !!! TODO
// _setupClassLoaderForDeserialization(valueType);
return (T) _readMapAndClose(_jsonFactory.createParser(src), _typeFactory.constructType(valueType));
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public T readValue(InputStream src, TypeReference valueTypeRef)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src), _typeFactory.constructType(valueTypeRef));
}
@SuppressWarnings("unchecked")
public T readValue(InputStream src, JavaType valueType)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src), valueType);
}
@SuppressWarnings("unchecked")
public T readValue(byte[] src, Class valueType)
throws IOException, JsonParseException, JsonMappingException
{
// !!! TODO
// _setupClassLoaderForDeserialization(valueType);
return (T) _readMapAndClose(_jsonFactory.createParser(src), _typeFactory.constructType(valueType));
}
@SuppressWarnings("unchecked")
public T readValue(byte[] src, int offset, int len,
Class valueType)
throws IOException, JsonParseException, JsonMappingException
{
// !!! TODO
// _setupClassLoaderForDeserialization(valueType);
return (T) _readMapAndClose(_jsonFactory.createParser(src, offset, len), _typeFactory.constructType(valueType));
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public T readValue(byte[] src, TypeReference valueTypeRef)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src), _typeFactory.constructType(valueTypeRef));
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public T readValue(byte[] src, int offset, int len,
TypeReference valueTypeRef)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src, offset, len), _typeFactory.constructType(valueTypeRef));
}
@SuppressWarnings("unchecked")
public T readValue(byte[] src, JavaType valueType)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src), valueType);
}
@SuppressWarnings("unchecked")
public T readValue(byte[] src, int offset, int len,
JavaType valueType)
throws IOException, JsonParseException, JsonMappingException
{
return (T) _readMapAndClose(_jsonFactory.createParser(src, offset, len), valueType);
}
/*
/**********************************************************
/* Extended Public API: serialization
/* (mapping from Java types to JSON)
/**********************************************************
*/
/**
* Method that can be used to serialize any Java value as
* JSON output, written to File provided.
*/
public void writeValue(File resultFile, Object value)
throws IOException, JsonGenerationException, JsonMappingException
{
_configAndWriteValue(_jsonFactory.createGenerator(resultFile, JsonEncoding.UTF8), value);
}
/**
* Method that can be used to serialize any Java value as
* JSON output, using output stream provided (using encoding
* {@link JsonEncoding#UTF8}).
*
* Note: method does not close the underlying stream explicitly
* here; however, {@link JsonFactory} this mapper uses may choose
* to close the stream depending on its settings (by default,
* it will try to close it when {@link JsonGenerator} we construct
* is closed).
*/
public void writeValue(OutputStream out, Object value)
throws IOException, JsonGenerationException, JsonMappingException
{
_configAndWriteValue(_jsonFactory.createGenerator(out, JsonEncoding.UTF8), value);
}
/**
* Method that can be used to serialize any Java value as
* JSON output, using Writer provided.
*
* Note: method does not close the underlying stream explicitly
* here; however, {@link JsonFactory} this mapper uses may choose
* to close the stream depending on its settings (by default,
* it will try to close it when {@link JsonGenerator} we construct
* is closed).
*/
public void writeValue(Writer w, Object value)
throws IOException, JsonGenerationException, JsonMappingException
{
_configAndWriteValue(_jsonFactory.createGenerator(w), value);
}
/**
* Method that can be used to serialize any Java value as
* a String. Functionally equivalent to calling
* {@link #writeValue(Writer,Object)} with {@link java.io.StringWriter}
* and constructing String, but more efficient.
*
* Note: prior to version 2.1, throws clause included {@link IOException}; 2.1 removed it.
*/
@SuppressWarnings("resource")
public String writeValueAsString(Object value)
throws JsonProcessingException
{
// alas, we have to pull the recycler directly here...
SegmentedStringWriter sw = new SegmentedStringWriter(_jsonFactory._getBufferRecycler());
try {
_configAndWriteValue(_jsonFactory.createGenerator(sw), value);
} catch (JsonProcessingException e) { // to support [JACKSON-758]
throw e;
} catch (IOException e) { // shouldn't really happen, but is declared as possibility so:
throw JsonMappingException.fromUnexpectedIOE(e);
}
return sw.getAndClear();
}
/**
* Method that can be used to serialize any Java value as
* a byte array. Functionally equivalent to calling
* {@link #writeValue(Writer,Object)} with {@link java.io.ByteArrayOutputStream}
* and getting bytes, but more efficient.
* Encoding used will be UTF-8.
*
* Note: prior to version 2.1, throws clause included {@link IOException}; 2.1 removed it.
*/
@SuppressWarnings("resource")
public byte[] writeValueAsBytes(Object value)
throws JsonProcessingException
{
ByteArrayBuilder bb = new ByteArrayBuilder(_jsonFactory._getBufferRecycler());
try {
_configAndWriteValue(_jsonFactory.createGenerator(bb, JsonEncoding.UTF8), value);
} catch (JsonProcessingException e) { // to support [JACKSON-758]
throw e;
} catch (IOException e) { // shouldn't really happen, but is declared as possibility so:
throw JsonMappingException.fromUnexpectedIOE(e);
}
byte[] result = bb.toByteArray();
bb.release();
return result;
}
/*
/**********************************************************
/* Extended Public API: constructing ObjectWriters
/* for more advanced configuration
/**********************************************************
*/
/**
* Convenience method for constructing {@link ObjectWriter}
* with default settings.
*/
public ObjectWriter writer() {
return new ObjectWriter(this, getSerializationConfig());
}
/**
* Factory method for constructing {@link ObjectWriter} with
* specified feature enabled (compared to settings that this
* mapper instance has).
*/
public ObjectWriter writer(SerializationFeature feature) {
return new ObjectWriter(this, getSerializationConfig().with(feature));
}
/**
* Factory method for constructing {@link ObjectWriter} with
* specified features enabled (compared to settings that this
* mapper instance has).
*/
public ObjectWriter writer(SerializationFeature first,
SerializationFeature... other) {
return new ObjectWriter(this, getSerializationConfig().with(first, other));
}
/**
* Factory method for constructing {@link ObjectWriter} that will
* serialize objects using specified {@link DateFormat}; or, if
* null passed, using timestamp (64-bit number.
*/
public ObjectWriter writer(DateFormat df) {
return new ObjectWriter(this, getSerializationConfig().with(df));
}
/**
* Factory method for constructing {@link ObjectWriter} that will
* serialize objects using specified JSON View (filter).
*/
public ObjectWriter writerWithView(Class serializationView) {
return new ObjectWriter(this, getSerializationConfig().withView(serializationView));
}
/**
* Factory method for constructing {@link ObjectWriter} that will
* serialize objects using specified root type, instead of actual
* runtime type of value. Type must be a super-type of runtime
* type.
*/
public ObjectWriter writerWithType(Class rootType) {
return new ObjectWriter(this, getSerializationConfig(),
// 15-Mar-2013, tatu: Important! Indicate that static typing is needed:
((rootType == null) ? null :_typeFactory.constructType(rootType)),
/*PrettyPrinter*/null);
}
/**
* Factory method for constructing {@link ObjectWriter} that will
* serialize objects using specified root type, instead of actual
* runtime type of value. Type must be a super-type of runtime type.
*/
public ObjectWriter writerWithType(TypeReference rootType) {
return new ObjectWriter(this, getSerializationConfig(),
// 15-Mar-2013, tatu: Important! Indicate that static typing is needed:
((rootType == null) ? null : _typeFactory.constructType(rootType)),
/*PrettyPrinter*/null);
}
/**
* Factory method for constructing {@link ObjectWriter} that will
* serialize objects using specified root type, instead of actual
* runtime type of value. Type must be a super-type of runtime type.
*/
public ObjectWriter writerWithType(JavaType rootType) {
return new ObjectWriter(this, getSerializationConfig(), rootType, /*PrettyPrinter*/null);
}
/**
* Factory method for constructing {@link ObjectWriter} that will
* serialize objects using specified pretty printer for indentation
* (or if null, no pretty printer)
*/
public ObjectWriter writer(PrettyPrinter pp) {
if (pp == null) { // need to use a marker to indicate explicit disabling of pp
pp = ObjectWriter.NULL_PRETTY_PRINTER;
}
return new ObjectWriter(this, getSerializationConfig(), /*root type*/ null, pp);
}
/**
* Factory method for constructing {@link ObjectWriter} that will
* serialize objects using the default pretty printer for indentation
*/
public ObjectWriter writerWithDefaultPrettyPrinter() {
return new ObjectWriter(this, getSerializationConfig(),
/*root type*/ null, _defaultPrettyPrinter());
}
/**
* Factory method for constructing {@link ObjectWriter} that will
* serialize objects using specified filter provider.
*/
public ObjectWriter writer(FilterProvider filterProvider) {
return new ObjectWriter(this,
getSerializationConfig().withFilters(filterProvider));
}
/**
* Factory method for constructing {@link ObjectWriter} that will
* pass specific schema object to {@link JsonGenerator} used for
* writing content.
*
* @param schema Schema to pass to generator
*/
public ObjectWriter writer(FormatSchema schema) {
_verifySchemaType(schema);
return new ObjectWriter(this, getSerializationConfig(), schema);
}
/**
* Factory method for constructing {@link ObjectWriter} that will
* use specified Base64 encoding variant for Base64-encoded binary data.
*
* @since 2.1
*/
public ObjectWriter writer(Base64Variant defaultBase64) {
return new ObjectWriter(this, getSerializationConfig().with(defaultBase64));
}
/**
* Factory method for constructing {@link ObjectReader} that will
* use specified character escaping details for output.
*
* @since 2.3
*/
public ObjectWriter writer(CharacterEscapes escapes) {
return writer().with(escapes);
}
/**
* Factory method for constructing {@link ObjectWriter} that will
* use specified default attributes.
*
* @since 2.3
*/
public ObjectWriter writer(ContextAttributes attrs) {
return new ObjectWriter(this, getSerializationConfig().with(attrs));
}
/*
/**********************************************************
/* Extended Public API: constructing ObjectReaders
/* for more advanced configuration
/**********************************************************
*/
/**
* Factory method for constructing {@link ObjectReader} with
* default settings. Note that the resulting instance is NOT usable as is,
* without defining expected value type.
*/
public ObjectReader reader() {
return new ObjectReader(this, getDeserializationConfig())
.with(_injectableValues);
}
/**
* Factory method for constructing {@link ObjectReader} with
* specified feature enabled (compared to settings that this
* mapper instance has).
* Note that the resulting instance is NOT usable as is,
* without defining expected value type.
*/
public ObjectReader reader(DeserializationFeature feature) {
return new ObjectReader(this, getDeserializationConfig().with(feature));
}
/**
* Factory method for constructing {@link ObjectReader} with
* specified features enabled (compared to settings that this
* mapper instance has).
* Note that the resulting instance is NOT usable as is,
* without defining expected value type.
*/
public ObjectReader reader(DeserializationFeature first,
DeserializationFeature... other) {
return new ObjectReader(this, getDeserializationConfig().with(first, other));
}
/**
* Factory method for constructing {@link ObjectReader} that will
* update given Object (usually Bean, but can be a Collection or Map
* as well, but NOT an array) with JSON data. Deserialization occurs
* normally except that the root-level value in JSON is not used for
* instantiating a new object; instead give updateable object is used
* as root.
* Runtime type of value object is used for locating deserializer,
* unless overridden by other factory methods of {@link ObjectReader}
*/
public ObjectReader readerForUpdating(Object valueToUpdate)
{
JavaType t = _typeFactory.constructType(valueToUpdate.getClass());
return new ObjectReader(this, getDeserializationConfig(), t, valueToUpdate,
null, _injectableValues);
}
/**
* Factory method for constructing {@link ObjectReader} that will
* read or update instances of specified type
*/
public ObjectReader reader(JavaType type)
{
return new ObjectReader(this, getDeserializationConfig(), type, null,
null, _injectableValues);
}
/**
* Factory method for constructing {@link ObjectReader} that will
* read or update instances of specified type
*/
public ObjectReader reader(Class type)
{
return reader(_typeFactory.constructType(type));
}
/**
* Factory method for constructing {@link ObjectReader} that will
* read or update instances of specified type
*/
public ObjectReader reader(TypeReference type)
{
return reader(_typeFactory.constructType(type));
}
/**
* Factory method for constructing {@link ObjectReader} that will
* use specified {@link JsonNodeFactory} for constructing JSON trees.
*/
public ObjectReader reader(JsonNodeFactory f)
{
return new ObjectReader(this, getDeserializationConfig()).with(f);
}
/**
* Factory method for constructing {@link ObjectReader} that will
* pass specific schema object to {@link JsonParser} used for
* reading content.
*
* @param schema Schema to pass to parser
*/
public ObjectReader reader(FormatSchema schema) {
_verifySchemaType(schema);
return new ObjectReader(this, getDeserializationConfig(), null, null,
schema, _injectableValues);
}
/**
* Factory method for constructing {@link ObjectReader} that will
* use specified injectable values.
*
* @param injectableValues Injectable values to use
*/
public ObjectReader reader(InjectableValues injectableValues) {
return new ObjectReader(this, getDeserializationConfig(), null, null,
null, injectableValues);
}
/**
* Factory method for constructing {@link ObjectReader} that will
* deserialize objects using specified JSON View (filter).
*/
public ObjectReader readerWithView(Class view) {
return new ObjectReader(this, getDeserializationConfig().withView(view));
}
/**
* Factory method for constructing {@link ObjectReader} that will
* use specified Base64 encoding variant for Base64-encoded binary data.
*
* @since 2.1
*/
public ObjectReader reader(Base64Variant defaultBase64) {
return new ObjectReader(this, getDeserializationConfig().with(defaultBase64));
}
/**
* Factory method for constructing {@link ObjectReader} that will
* use specified default attributes.
*
* @since 2.3
*/
public ObjectReader reader(ContextAttributes attrs) {
return new ObjectReader(this, getDeserializationConfig().with(attrs));
}
/*
/**********************************************************
/* Extended Public API: convenience type conversion
/**********************************************************
*/
/**
* Convenience method for doing two-step conversion from given value, into
* instance of given value type. This is functionality equivalent to first
* serializing given value into JSON, then binding JSON data into value
* of given type, but may be executed without fully serializing into
* JSON. Same converters (serializers, deserializers) will be used as for
* data binding, meaning same object mapper configuration works.
*
* @throws IllegalArgumentException If conversion fails due to incompatible type;
* if so, root cause will contain underlying checked exception data binding
* functionality threw
*/
@SuppressWarnings("unchecked")
public T convertValue(Object fromValue, Class toValueType)
throws IllegalArgumentException
{
// sanity check for null first:
if (fromValue == null) return null;
return (T) _convert(fromValue, _typeFactory.constructType(toValueType));
}
@SuppressWarnings("unchecked")
public T convertValue(Object fromValue, TypeReference toValueTypeRef)
throws IllegalArgumentException
{
return (T) convertValue(fromValue, _typeFactory.constructType(toValueTypeRef));
}
@SuppressWarnings("unchecked")
public T convertValue(Object fromValue, JavaType toValueType)
throws IllegalArgumentException
{
// sanity check for null first:
if (fromValue == null) return null;
return (T) _convert(fromValue, toValueType);
}
/**
* Actual conversion implementation: instead of using existing read
* and write methods, much of code is inlined. Reason for this is
* that we must avoid wrapping/unwrapping both for efficiency and
* for correctness. If wrapping/unwrapping is actually desired,
* caller must use explicit writeValue and
* readValue methods.
*/
@SuppressWarnings("resource")
protected Object _convert(Object fromValue, JavaType toValueType)
throws IllegalArgumentException
{
// also, as per [Issue-11], consider case for simple cast
/* But with caveats: one is that while everything is Object.class, we don't
* want to "optimize" that out; and the other is that we also do not want
* to lose conversions of generic types.
*/
Class targetType = toValueType.getRawClass();
if (targetType != Object.class
&& !toValueType.hasGenericTypes()
&& targetType.isAssignableFrom(fromValue.getClass())) {
return fromValue;
}
/* Then use TokenBuffer, which is a JsonGenerator:
* (see [JACKSON-175])
*/
TokenBuffer buf = new TokenBuffer(this, false);
try {
// inlined 'writeValue' with minor changes:
// first: disable wrapping when writing
SerializationConfig config = getSerializationConfig().without(SerializationFeature.WRAP_ROOT_VALUE);
// no need to check for closing of TokenBuffer
_serializerProvider(config).serializeValue(buf, fromValue);
// then matching read, inlined 'readValue' with minor mods:
final JsonParser jp = buf.asParser();
Object result;
// ok to pass in existing feature flags; unwrapping handled by mapper
final DeserializationConfig deserConfig = getDeserializationConfig();
JsonToken t = _initForReading(jp);
if (t == JsonToken.VALUE_NULL) {
DeserializationContext ctxt = createDeserializationContext(jp, deserConfig);
result = _findRootDeserializer(ctxt, toValueType).getNullValue();
} else if (t == JsonToken.END_ARRAY || t == JsonToken.END_OBJECT) {
result = null;
} else { // pointing to event other than null
DeserializationContext ctxt = createDeserializationContext(jp, deserConfig);
JsonDeserializer