com.fasterxml.jackson.databind.DeserializationConfig Maven / Gradle / Ivy
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package com.fasterxml.jackson.databind;
import java.text.DateFormat;
import java.util.*;
import com.fasterxml.jackson.annotation.*;
import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
import com.fasterxml.jackson.core.*;
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.MapperConfigBase;
import com.fasterxml.jackson.databind.deser.DeserializationProblemHandler;
import com.fasterxml.jackson.databind.introspect.AnnotatedClass;
import com.fasterxml.jackson.databind.introspect.ClassIntrospector;
import com.fasterxml.jackson.databind.introspect.NopAnnotationIntrospector;
import com.fasterxml.jackson.databind.introspect.VisibilityChecker;
import com.fasterxml.jackson.databind.jsontype.NamedType;
import com.fasterxml.jackson.databind.jsontype.SubtypeResolver;
import com.fasterxml.jackson.databind.jsontype.TypeDeserializer;
import com.fasterxml.jackson.databind.jsontype.TypeResolverBuilder;
import com.fasterxml.jackson.databind.node.JsonNodeFactory;
import com.fasterxml.jackson.databind.type.ClassKey;
import com.fasterxml.jackson.databind.type.TypeFactory;
import com.fasterxml.jackson.databind.util.LinkedNode;
/**
* Object that contains baseline configuration for deserialization
* process. An instance is owned by {@link ObjectMapper}, which
* passes an immutable instance to be used for deserialization process.
*
* Note that instances are considered immutable and as such no copies
* should need to be created for sharing; all copying is done with
* "fluent factory" methods.
* Note also that unlike with Jackson 1, these instances can not be
* assigned to {@link ObjectMapper}; in fact, application code should
* rarely interact directly with these instance (unlike core Jackson code)
*/
public final class DeserializationConfig
extends MapperConfigBase
implements java.io.Serializable // since 2.1
{
// for 2.1.0
private static final long serialVersionUID = -4227480407273773599L;
/**
* Set of features enabled; actual type (kind of features)
* depends on sub-classes.
*/
protected final int _deserFeatures;
/**
* Linked list that contains all registered problem handlers.
* Implementation as front-added linked list allows for sharing
* of the list (tail) without copying the list.
*/
protected final LinkedNode _problemHandlers;
/**
* Factory used for constructing {@link com.fasterxml.jackson.databind.JsonNode} instances.
*/
protected final JsonNodeFactory _nodeFactory;
/*
/**********************************************************
/* Life-cycle, constructors
/**********************************************************
*/
/**
* Constructor used by ObjectMapper to create default configuration object instance.
*/
public DeserializationConfig(BaseSettings base,
SubtypeResolver str, Map> mixins)
{
super(base, str, mixins);
_deserFeatures = collectFeatureDefaults(DeserializationFeature.class);
_nodeFactory = JsonNodeFactory.instance;
_problemHandlers = null;
}
/**
* Copy constructor used to create a non-shared instance with given mix-in
* annotation definitions and subtype resolver.
*/
private DeserializationConfig(DeserializationConfig src, SubtypeResolver str)
{
super(src, str);
_deserFeatures = src._deserFeatures;
_nodeFactory = src._nodeFactory;
_problemHandlers = src._problemHandlers;
}
private DeserializationConfig(DeserializationConfig src,
int mapperFeatures, int deserFeatures)
{
super(src, mapperFeatures);
_deserFeatures = deserFeatures;
_nodeFactory = src._nodeFactory;
_problemHandlers = src._problemHandlers;
}
private DeserializationConfig(DeserializationConfig src, BaseSettings base)
{
super(src, base);
_deserFeatures = src._deserFeatures;
_nodeFactory = src._nodeFactory;
_problemHandlers = src._problemHandlers;
}
private DeserializationConfig(DeserializationConfig src, JsonNodeFactory f)
{
super(src);
_deserFeatures = src._deserFeatures;
_problemHandlers = src._problemHandlers;
_nodeFactory = f;
}
private DeserializationConfig(DeserializationConfig src,
LinkedNode problemHandlers)
{
super(src);
_deserFeatures = src._deserFeatures;
_problemHandlers = problemHandlers;
_nodeFactory = src._nodeFactory;
}
private DeserializationConfig(DeserializationConfig src, String rootName)
{
super(src, rootName);
_deserFeatures = src._deserFeatures;
_problemHandlers = src._problemHandlers;
_nodeFactory = src._nodeFactory;
}
private DeserializationConfig(DeserializationConfig src, Class view)
{
super(src, view);
_deserFeatures = src._deserFeatures;
_problemHandlers = src._problemHandlers;
_nodeFactory = src._nodeFactory;
}
/**
* @since 2.1
*/
protected DeserializationConfig(DeserializationConfig src, Map> mixins)
{
super(src, mixins);
_deserFeatures = src._deserFeatures;
_problemHandlers = src._problemHandlers;
_nodeFactory = src._nodeFactory;
}
/**
* @since 2.3
*/
protected DeserializationConfig(DeserializationConfig src, ContextAttributes attrs)
{
super(src, attrs);
_deserFeatures = src._deserFeatures;
_problemHandlers = src._problemHandlers;
_nodeFactory = src._nodeFactory;
}
// for unit tests only:
protected BaseSettings getBaseSettings() { return _base; }
/*
/**********************************************************
/* Life-cycle, factory methods from MapperConfig
/**********************************************************
*/
@Override
public DeserializationConfig with(MapperFeature... features)
{
int newMapperFlags = _mapperFeatures;
for (MapperFeature f : features) {
newMapperFlags |= f.getMask();
}
return (newMapperFlags == _mapperFeatures) ? this :
new DeserializationConfig(this, newMapperFlags, _deserFeatures);
}
@Override
public DeserializationConfig without(MapperFeature... features)
{
int newMapperFlags = _mapperFeatures;
for (MapperFeature f : features) {
newMapperFlags &= ~f.getMask();
}
return (newMapperFlags == _mapperFeatures) ? this :
new DeserializationConfig(this, newMapperFlags, _deserFeatures);
}
@Override
public DeserializationConfig with(MapperFeature feature, boolean state)
{
int newMapperFlags;
if (state) {
newMapperFlags = _mapperFeatures | feature.getMask();
} else {
newMapperFlags = _mapperFeatures & ~feature.getMask();
}
return (newMapperFlags == _mapperFeatures) ? this :
new DeserializationConfig(this, newMapperFlags, _deserFeatures);
}
@Override
public DeserializationConfig with(ClassIntrospector ci) {
return _withBase(_base.withClassIntrospector(ci));
}
@Override
public DeserializationConfig with(AnnotationIntrospector ai) {
return _withBase(_base.withAnnotationIntrospector(ai));
}
@Override
public DeserializationConfig with(VisibilityChecker vc) {
return _withBase(_base.withVisibilityChecker(vc));
}
@Override
public DeserializationConfig withVisibility(PropertyAccessor forMethod, JsonAutoDetect.Visibility visibility) {
return _withBase( _base.withVisibility(forMethod, visibility));
}
@Override
public DeserializationConfig with(TypeResolverBuilder trb) {
return _withBase(_base.withTypeResolverBuilder(trb));
}
@Override
public DeserializationConfig with(SubtypeResolver str) {
return (_subtypeResolver == str) ? this : new DeserializationConfig(this, str);
}
@Override
public DeserializationConfig with(PropertyNamingStrategy pns) {
return _withBase(_base.withPropertyNamingStrategy(pns));
}
@Override
public DeserializationConfig withRootName(String rootName) {
if (rootName == null) {
if (_rootName == null) {
return this;
}
} else if (rootName.equals(_rootName)) {
return this;
}
return new DeserializationConfig(this, rootName);
}
@Override
public DeserializationConfig with(TypeFactory tf) {
return _withBase( _base.withTypeFactory(tf));
}
@Override
public DeserializationConfig with(DateFormat df) {
return _withBase(_base.withDateFormat(df));
}
@Override
public DeserializationConfig with(HandlerInstantiator hi) {
return _withBase(_base.withHandlerInstantiator(hi));
}
@Override
public DeserializationConfig withInsertedAnnotationIntrospector(AnnotationIntrospector ai) {
return _withBase(_base.withInsertedAnnotationIntrospector(ai));
}
@Override
public DeserializationConfig withAppendedAnnotationIntrospector(AnnotationIntrospector ai) {
return _withBase(_base.withAppendedAnnotationIntrospector(ai));
}
@Override
public DeserializationConfig withView(Class view) {
return (_view == view) ? this : new DeserializationConfig(this, view);
}
@Override
public DeserializationConfig with(Locale l) {
return _withBase(_base.with(l));
}
@Override
public DeserializationConfig with(TimeZone tz) {
return _withBase(_base.with(tz));
}
@Override
public DeserializationConfig with(Base64Variant base64) {
return _withBase(_base.with(base64));
}
@Override
public DeserializationConfig with(ContextAttributes attrs) {
return (attrs == _attributes) ? this : new DeserializationConfig(this, attrs);
}
private final DeserializationConfig _withBase(BaseSettings newBase) {
return (_base == newBase) ? this : new DeserializationConfig(this, newBase);
}
/*
/**********************************************************
/* Life-cycle, deserialization-specific factory methods
/**********************************************************
*/
/**
* Fluent factory method that will construct a new instance with
* specified {@link JsonNodeFactory}
*/
public DeserializationConfig with(JsonNodeFactory f) {
if (_nodeFactory == f) {
return this;
}
return new DeserializationConfig(this, f);
}
/**
* Method that can be used to add a handler that can (try to)
* resolve non-fatal deserialization problems.
*/
public DeserializationConfig withHandler(DeserializationProblemHandler h)
{
// Sanity check: let's prevent adding same handler multiple times
if (LinkedNode.contains(_problemHandlers, h)) {
return this;
}
return new DeserializationConfig(this,
new LinkedNode(h, _problemHandlers));
}
/**
* Method for removing all configured problem handlers; usually done to replace
* existing handler(s) with different one(s)
*/
public DeserializationConfig withNoProblemHandlers() {
if (_problemHandlers == null) {
return this;
}
return new DeserializationConfig(this,
(LinkedNode) null);
}
/**
* Fluent factory method that will construct and return a new configuration
* object instance with specified features enabled.
*/
public DeserializationConfig with(DeserializationFeature feature)
{
int newDeserFeatures = (_deserFeatures | feature.getMask());
return (newDeserFeatures == _deserFeatures) ? this :
new DeserializationConfig(this, _mapperFeatures, newDeserFeatures);
}
/**
* Fluent factory method that will construct and return a new configuration
* object instance with specified features enabled.
*/
public DeserializationConfig with(DeserializationFeature first,
DeserializationFeature... features)
{
int newDeserFeatures = _deserFeatures | first.getMask();
for (DeserializationFeature f : features) {
newDeserFeatures |= f.getMask();
}
return (newDeserFeatures == _deserFeatures) ? this :
new DeserializationConfig(this, _mapperFeatures, newDeserFeatures);
}
/**
* Fluent factory method that will construct and return a new configuration
* object instance with specified features enabled.
*/
public DeserializationConfig withFeatures(DeserializationFeature... features)
{
int newDeserFeatures = _deserFeatures;
for (DeserializationFeature f : features) {
newDeserFeatures |= f.getMask();
}
return (newDeserFeatures == _deserFeatures) ? this :
new DeserializationConfig(this, _mapperFeatures, newDeserFeatures);
}
/**
* Fluent factory method that will construct and return a new configuration
* object instance with specified feature disabled.
*/
public DeserializationConfig without(DeserializationFeature feature)
{
int newDeserFeatures = _deserFeatures & ~feature.getMask();
return (newDeserFeatures == _deserFeatures) ? this :
new DeserializationConfig(this, _mapperFeatures, newDeserFeatures);
}
/**
* Fluent factory method that will construct and return a new configuration
* object instance with specified features disabled.
*/
public DeserializationConfig without(DeserializationFeature first,
DeserializationFeature... features)
{
int newDeserFeatures = _deserFeatures & ~first.getMask();
for (DeserializationFeature f : features) {
newDeserFeatures &= ~f.getMask();
}
return (newDeserFeatures == _deserFeatures) ? this :
new DeserializationConfig(this, _mapperFeatures, newDeserFeatures);
}
/**
* Fluent factory method that will construct and return a new configuration
* object instance with specified features disabled.
*/
public DeserializationConfig withoutFeatures(DeserializationFeature... features)
{
int newDeserFeatures = _deserFeatures;
for (DeserializationFeature f : features) {
newDeserFeatures &= ~f.getMask();
}
return (newDeserFeatures == _deserFeatures) ? this :
new DeserializationConfig(this, _mapperFeatures, newDeserFeatures);
}
/*
/**********************************************************
/* MapperConfig implementation
/**********************************************************
*/
/**
* Method for getting {@link AnnotationIntrospector} configured
* to introspect annotation values used for configuration.
*/
@Override
public AnnotationIntrospector getAnnotationIntrospector()
{
/* 29-Jul-2009, tatu: it's now possible to disable use of
* annotations; can be done using "no-op" introspector
*/
if (isEnabled(MapperFeature.USE_ANNOTATIONS)) {
return super.getAnnotationIntrospector();
}
return NopAnnotationIntrospector.instance;
}
@Override
public boolean useRootWrapping()
{
if (_rootName != null) { // empty String disables wrapping; non-empty enables
return (_rootName.length() > 0);
}
return isEnabled(DeserializationFeature.UNWRAP_ROOT_VALUE);
}
/**
* Accessor for getting bean description that only contains class
* annotations: useful if no getter/setter/creator information is needed.
*/
@Override
public BeanDescription introspectClassAnnotations(JavaType type) {
return getClassIntrospector().forClassAnnotations(this, type, this);
}
/**
* Accessor for getting bean description that only contains immediate class
* annotations: ones from the class, and its direct mix-in, if any, but
* not from super types.
*/
@Override
public BeanDescription introspectDirectClassAnnotations(JavaType type) {
return getClassIntrospector().forDirectClassAnnotations(this, type, this);
}
@Override
public VisibilityChecker getDefaultVisibilityChecker()
{
VisibilityChecker vchecker = super.getDefaultVisibilityChecker();
if (!isEnabled(MapperFeature.AUTO_DETECT_SETTERS)) {
vchecker = vchecker.withSetterVisibility(Visibility.NONE);
}
if (!isEnabled(MapperFeature.AUTO_DETECT_CREATORS)) {
vchecker = vchecker.withCreatorVisibility(Visibility.NONE);
}
if (!isEnabled(MapperFeature.AUTO_DETECT_FIELDS)) {
vchecker = vchecker.withFieldVisibility(Visibility.NONE);
}
return vchecker;
}
public final boolean isEnabled(DeserializationFeature f) {
return (_deserFeatures & f.getMask()) != 0;
}
/**
* "Bulk" access method for checking that all features specified by
* mask are enabled.
*
* @since 2.3
*/
public final boolean hasDeserializationFeatures(int featureMask) {
return (_deserFeatures & featureMask) == featureMask;
}
public final int getDeserializationFeatures() {
return _deserFeatures;
}
/*
/**********************************************************
/* Other configuration
/**********************************************************
*/
/**
* Method for getting head of the problem handler chain. May be null,
* if no handlers have been added.
*/
public LinkedNode getProblemHandlers() {
return _problemHandlers;
}
public final JsonNodeFactory getNodeFactory() {
return _nodeFactory;
}
/*
/**********************************************************
/* Introspection methods
/**********************************************************
*/
/**
* Method that will introspect full bean properties for the purpose
* of building a bean deserializer
*
* @param type Type of class to be introspected
*/
@SuppressWarnings("unchecked")
public T introspect(JavaType type) {
return (T) getClassIntrospector().forDeserialization(this, type, this);
}
/**
* Method that will introspect subset of bean properties needed to
* construct bean instance.
*/
@SuppressWarnings("unchecked")
public T introspectForCreation(JavaType type) {
return (T) getClassIntrospector().forCreation(this, type, this);
}
/**
* @since 2.0
*/
@SuppressWarnings("unchecked")
public T introspectForBuilder(JavaType type) {
return (T) getClassIntrospector().forDeserializationWithBuilder(this, type, this);
}
/*
/**********************************************************
/* Support for polymorphic type handling
/**********************************************************
*/
/**
* Helper method that is needed to properly handle polymorphic referenced
* types, such as types referenced by {@link java.util.concurrent.atomic.AtomicReference},
* or various "optional" types.
*
* @since 2.4
*/
public TypeDeserializer findTypeDeserializer(JavaType baseType)
throws JsonMappingException
{
BeanDescription bean = introspectClassAnnotations(baseType.getRawClass());
AnnotatedClass ac = bean.getClassInfo();
TypeResolverBuilder b = getAnnotationIntrospector().findTypeResolver(this, ac, baseType);
/* Ok: if there is no explicit type info handler, we may want to
* use a default. If so, config object knows what to use.
*/
Collection subtypes = null;
if (b == null) {
b = getDefaultTyper(baseType);
if (b == null) {
return null;
}
} else {
subtypes = getSubtypeResolver().collectAndResolveSubtypes(ac, this, getAnnotationIntrospector());
}
/* 04-May-2014, tatu: When called from DeserializerFactory, additional code like
* this is invoked. But here we do not actually have access to mappings, so not
* quite sure what to do, if anything. May need to revisit if the underlying
* problem re-surfaces...
*/
/*
if ((b.getDefaultImpl() == null) && baseType.isAbstract()) {
JavaType defaultType = mapAbstractType(config, baseType);
if (defaultType != null && defaultType.getRawClass() != baseType.getRawClass()) {
b = b.defaultImpl(defaultType.getRawClass());
}
}
*/
return b.buildTypeDeserializer(this, baseType, subtypes);
}
}