package com.fasterxml.jackson.databind.deser;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.ObjectIdGenerator;
import com.fasterxml.jackson.annotation.ObjectIdGenerators;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.impl.*;
import com.fasterxml.jackson.databind.deser.std.ContainerDeserializerBase;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import com.fasterxml.jackson.databind.introspect.*;
import com.fasterxml.jackson.databind.jsontype.TypeDeserializer;
import com.fasterxml.jackson.databind.type.ClassKey;
import com.fasterxml.jackson.databind.util.Annotations;
import com.fasterxml.jackson.databind.util.ClassUtil;
import com.fasterxml.jackson.databind.util.NameTransformer;
import com.fasterxml.jackson.databind.util.TokenBuffer;
/**
* Base class for <code>BeanDeserializer</code>.
*/
public abstract class BeanDeserializerBase
extends StdDeserializer<Object>
implements ContextualDeserializer, ResolvableDeserializer
{
/*
/**********************************************************
/* Information regarding type being deserialized
/**********************************************************
*/
/**
* Annotations from the bean class: used for accessing
* annotations during resolution phase (see {@link #resolve}).
*/
final protected Annotations _classAnnotations;
/**
* Declared type of the bean this deserializer handles.
*/
final protected JavaType _beanType;
/*
/**********************************************************
/* Configuration for creating value instance
/**********************************************************
*/
/**
* Object that handles details of constructing initial
* bean value (to which bind data to), unless instance
* is passed (via updateValue())
*/
protected final ValueInstantiator _valueInstantiator;
/**
* Deserializer that is used iff delegate-based creator is
* to be used for deserializing from JSON Object.
*/
protected JsonDeserializer<Object> _delegateDeserializer;
/**
* If the bean needs to be instantiated using constructor
* or factory method
* that takes one or more named properties as argument(s),
* this creator is used for instantiation.
* This value gets resolved during general resolution.
*/
protected PropertyBasedCreator _propertyBasedCreator;
/**
* Flag that is set to mark "non-standard" cases; where either
* we use one of non-default creators, or there are unwrapped
* values to consider.
*/
protected boolean _nonStandardCreation;
/**
* Flag that indicates that no "special features" whatsoever
* are enabled, so the simplest processing is possible.
*/
protected boolean _vanillaProcessing;
/*
/**********************************************************
/* Property information, setters
/**********************************************************
*/
/**
* Mapping of property names to properties, built when all properties
* to use have been successfully resolved.
*/
final protected BeanPropertyMap _beanProperties;
/**
* List of {@link ValueInjector}s, if any injectable values are
* expected by the bean; otherwise null.
* This includes injectors used for injecting values via setters
* and fields, but not ones passed through constructor parameters.
*/
final protected ValueInjector[] _injectables;
/**
* Fallback setter used for handling any properties that are not
* mapped to regular setters. If setter is not null, it will be
* called once for each such property.
*/
protected SettableAnyProperty _anySetter;
/**
* In addition to properties that are set, we will also keep
* track of recognized but ignorable properties: these will
* be skipped without errors or warnings.
*/
final protected HashSet<String> _ignorableProps;
/**
* Flag that can be set to ignore and skip unknown properties.
* If set, will not throw an exception for unknown properties.
*/
final protected boolean _ignoreAllUnknown;
/**
* Flag that indicates that some aspect of deserialization depends
* on active view used (if any)
*/
final protected boolean _needViewProcesing;
/**
* We may also have one or more back reference fields (usually
* zero or one).
*/
final protected Map<String, SettableBeanProperty> _backRefs;
/*
/**********************************************************
/* Related handlers
/**********************************************************
*/
/**
* Lazily constructed map used to contain deserializers needed
* for polymorphic subtypes.
* Note that this is <b>only needed</b> for polymorphic types,
* that is, when the actual type is not statically known.
* For other types this remains null.
*/
protected HashMap<ClassKey, JsonDeserializer<Object>> _subDeserializers;
/**
* If one of properties has "unwrapped" value, we need separate
* helper object
*/
protected UnwrappedPropertyHandler _unwrappedPropertyHandler;
/**
* Handler that we need iff any of properties uses external
* type id.
*/
protected ExternalTypeHandler _externalTypeIdHandler;
/**
* If an Object Id is to be used for value handled by this
* deserializer, this reader is used for handling.
*/
protected final ObjectIdReader _objectIdReader;
/*
/**********************************************************
/* Life-cycle, construction, initialization
/**********************************************************
*/
/**
* Constructor used when initially building a deserializer
* instance, given a {@link BeanDeserializerBuilder} that
* contains configuration.
*/
protected BeanDeserializerBase(BeanDeserializerBuilder builder,
BeanDescription beanDesc,
BeanPropertyMap properties, Map<String, SettableBeanProperty> backRefs,
HashSet<String> ignorableProps, boolean ignoreAllUnknown,
boolean hasViews)
{
super(beanDesc.getType());
AnnotatedClass ac = beanDesc.getClassInfo();
_classAnnotations = ac.getAnnotations();
_beanType = beanDesc.getType();
_valueInstantiator = builder.getValueInstantiator();
_beanProperties = properties;
_backRefs = backRefs;
_ignorableProps = ignorableProps;
_ignoreAllUnknown = ignoreAllUnknown;
_anySetter = builder.getAnySetter();
List<ValueInjector> injectables = builder.getInjectables();
_injectables = (injectables == null || injectables.isEmpty()) ? null
: injectables.toArray(new ValueInjector[injectables.size()]);
_objectIdReader = builder.getObjectIdReader();
_nonStandardCreation = (_unwrappedPropertyHandler != null)
|| _valueInstantiator.canCreateUsingDelegate()
|| _valueInstantiator.canCreateFromObjectWith()
|| !_valueInstantiator.canCreateUsingDefault()
;
_needViewProcesing = hasViews;
_vanillaProcessing = !_nonStandardCreation
&& (_injectables == null)
&& !_needViewProcesing
;
}
protected BeanDeserializerBase(BeanDeserializerBase src)
{
this(src, src._ignoreAllUnknown);
}
protected BeanDeserializerBase(BeanDeserializerBase src, boolean ignoreAllUnknown)
{
super(src._beanType);
_classAnnotations = src._classAnnotations;
_beanType = src._beanType;
_valueInstantiator = src._valueInstantiator;
_delegateDeserializer = src._delegateDeserializer;
_propertyBasedCreator = src._propertyBasedCreator;
_beanProperties = src._beanProperties;
_backRefs = src._backRefs;
_ignorableProps = src._ignorableProps;
_ignoreAllUnknown = ignoreAllUnknown;
_anySetter = src._anySetter;
_injectables = src._injectables;
_objectIdReader = src._objectIdReader;
_nonStandardCreation = src._nonStandardCreation;
_unwrappedPropertyHandler = src._unwrappedPropertyHandler;
_needViewProcesing = src._needViewProcesing;
_vanillaProcessing = src._vanillaProcessing;
}
protected BeanDeserializerBase(BeanDeserializerBase src, NameTransformer unwrapper)
{
super(src._beanType);
_classAnnotations = src._classAnnotations;
_beanType = src._beanType;
_valueInstantiator = src._valueInstantiator;
_delegateDeserializer = src._delegateDeserializer;
_propertyBasedCreator = src._propertyBasedCreator;
_backRefs = src._backRefs;
_ignorableProps = src._ignorableProps;
_ignoreAllUnknown = (unwrapper != null) || src._ignoreAllUnknown;
_anySetter = src._anySetter;
_injectables = src._injectables;
_objectIdReader = src._objectIdReader;
_nonStandardCreation = src._nonStandardCreation;
_unwrappedPropertyHandler = src._unwrappedPropertyHandler;
if (unwrapper != null) {
// delegate further unwraps, if any
if (_unwrappedPropertyHandler != null) { // got handler, delegate
_unwrappedPropertyHandler.renameAll(unwrapper);
}
// and handle direct unwrapping as well:
_beanProperties = src._beanProperties.renameAll(unwrapper);
} else {
_beanProperties = src._beanProperties;
}
_needViewProcesing = src._needViewProcesing;
// probably adds a twist, so:
_vanillaProcessing = false;
}
public BeanDeserializerBase(BeanDeserializerBase src, ObjectIdReader oir)
{
super(src._beanType);
_classAnnotations = src._classAnnotations;
_beanType = src._beanType;
_valueInstantiator = src._valueInstantiator;
_delegateDeserializer = src._delegateDeserializer;
_propertyBasedCreator = src._propertyBasedCreator;
_backRefs = src._backRefs;
_ignorableProps = src._ignorableProps;
_ignoreAllUnknown = src._ignoreAllUnknown;
_anySetter = src._anySetter;
_injectables = src._injectables;
_nonStandardCreation = src._nonStandardCreation;
_unwrappedPropertyHandler = src._unwrappedPropertyHandler;
_needViewProcesing = src._needViewProcesing;
_vanillaProcessing = src._vanillaProcessing;
// then actual changes:
_objectIdReader = oir;
if (oir == null) {
_beanProperties = src._beanProperties;
} else {
_beanProperties = src._beanProperties.withProperty(new ObjectIdProperty(oir));
}
}
@Override
public abstract JsonDeserializer<Object> unwrappingDeserializer(NameTransformer unwrapper);
public abstract BeanDeserializerBase withObjectIdReader(ObjectIdReader oir);
/*
/**********************************************************
/* Public accessors
/**********************************************************
*/
@Override
public boolean isCachable() { return true; }
public boolean hasProperty(String propertyName) {
return _beanProperties.find(propertyName) != null;
}
public boolean hasViews() {
return _needViewProcesing;
}
/**
* Accessor for checking number of deserialized properties.
*/
public int getPropertyCount() {
return _beanProperties.size();
}
public final Class<?> getBeanClass() { return _beanType.getRawClass(); }
@Override public JavaType getValueType() { return _beanType; }
/**
* Accessor for iterating over properties this deserializer uses; with
* the exception that properties passed via Creator methods
* (specifically, "property-based constructor") are not included,
* but can be accessed separate by calling
* {@link #creatorProperties}
*/
public Iterator<SettableBeanProperty> properties()
{
if (_beanProperties == null) {
throw new IllegalStateException("Can only call after BeanDeserializer has been resolved");
}
return _beanProperties.allProperties();
}
/**
* Accessor for finding properties that represents values to pass
* through property-based creator method (constructor or
* factory method)
*
* @since 2.0
*/
public Iterator<SettableBeanProperty> creatorProperties()
{
if (_propertyBasedCreator == null) {
return Collections.<SettableBeanProperty>emptyList().iterator();
}
return _propertyBasedCreator.properties().iterator();
}
/**
* Accessor for finding the property with given name, if POJO
* has one. Name used is the external name, i.e. name used
* in external data representation (JSON).
*
* @since 2.0
*/
public SettableBeanProperty findProperty(String propertyName)
{
SettableBeanProperty prop = (_beanProperties == null) ?
null : _beanProperties.find(propertyName);
if (prop == null && _propertyBasedCreator != null) {
prop = _propertyBasedCreator.findCreatorProperty(propertyName);
}
return prop;
}
/**
* Method needed by {@link BeanDeserializerFactory} to properly link
* managed- and back-reference pairs.
*/
public SettableBeanProperty findBackReference(String logicalName)
{
if (_backRefs == null) {
return null;
}
return _backRefs.get(logicalName);
}
public ValueInstantiator getValueInstantiator() {
return _valueInstantiator;
}
/*
/**********************************************************
/* Validation, post-processing
/**********************************************************
*/
/**
* Method called to finalize setup of this deserializer,
* after deserializer itself has been registered.
* This is needed to handle recursive and transitive dependencies.
*/
@Override
public void resolve(DeserializationContext ctxt)
throws JsonMappingException
{
// if ValueInstantiator can use "creator" approach, need to resolve it here...
if (_valueInstantiator.canCreateFromObjectWith()) {
SettableBeanProperty[] creatorProps = _valueInstantiator.getFromObjectArguments(ctxt.getConfig());
_propertyBasedCreator = PropertyBasedCreator.construct(ctxt, _valueInstantiator, creatorProps);
}
Iterator<SettableBeanProperty> it = _beanProperties.allProperties();
UnwrappedPropertyHandler unwrapped = null;
ExternalTypeHandler.Builder extTypes = null;
while (it.hasNext()) {
SettableBeanProperty origProp = it.next();
SettableBeanProperty prop = origProp;
// May already have deserializer from annotations, if so, skip:
if (!prop.hasValueDeserializer()) {
prop = prop.withValueDeserializer(findDeserializer(ctxt, prop.getType(), prop));
} else { // may need contextual version
JsonDeserializer<Object> deser = prop.getValueDeserializer();
if (deser instanceof ContextualDeserializer) {
JsonDeserializer<?> cd = ((ContextualDeserializer) deser).createContextual(ctxt, prop);
if (cd != deser) {
prop = prop.withValueDeserializer(cd);
}
}
}
// [JACKSON-235]: need to link managed references with matching back references
prop = _resolveManagedReferenceProperty(ctxt, prop);
// [JACKSON-132]: support unwrapped values (via @JsonUnwrapped)
SettableBeanProperty u = _resolveUnwrappedProperty(ctxt, prop);
if (u != null) {
prop = u;
if (unwrapped == null) {
unwrapped = new UnwrappedPropertyHandler();
}
unwrapped.addProperty(prop);
continue;
}
// [JACKSON-594]: non-static inner classes too:
prop = _resolveInnerClassValuedProperty(ctxt, prop);
if (prop != origProp) {
_beanProperties.replace(prop);
}
/* one more thing: if this property uses "external property" type inclusion
* (see [JACKSON-453]), it needs different handling altogether
*/
if (prop.hasValueTypeDeserializer()) {
TypeDeserializer typeDeser = prop.getValueTypeDeserializer();
if (typeDeser.getTypeInclusion() == JsonTypeInfo.As.EXTERNAL_PROPERTY) {
if (extTypes == null) {
extTypes = new ExternalTypeHandler.Builder();
}
extTypes.addExternal(prop, typeDeser.getPropertyName());
// In fact, remove from list of known properties to simplify later handling
_beanProperties.remove(prop);
}
}
}
// "any setter" may also need to be resolved now
if (_anySetter != null && !_anySetter.hasValueDeserializer()) {
_anySetter = _anySetter.withValueDeserializer(findDeserializer(ctxt,
_anySetter.getType(), _anySetter.getProperty()));
}
// as well as delegate-based constructor:
if (_valueInstantiator.canCreateUsingDelegate()) {
JavaType delegateType = _valueInstantiator.getDelegateType(ctxt.getConfig());
if (delegateType == null) {
throw new IllegalArgumentException("Invalid delegate-creator definition for "+_beanType
+": value instantiator ("+_valueInstantiator.getClass().getName()
+") returned true for 'canCreateUsingDelegate()', but null for 'getDelegateType()'");
}
AnnotatedWithParams delegateCreator = _valueInstantiator.getDelegateCreator();
// Need to create a temporary property to allow contextual deserializers:
BeanProperty.Std property = new BeanProperty.Std(null,
delegateType, _classAnnotations, delegateCreator);
_delegateDeserializer = findDeserializer(ctxt, delegateType, property);
}
if (extTypes != null) {
_externalTypeIdHandler = extTypes.build();
// we consider this non-standard, to offline handling
_nonStandardCreation = true;
}
_unwrappedPropertyHandler = unwrapped;
if (unwrapped != null) { // we consider this non-standard, to offline handling
_nonStandardCreation = true;
}
// may need to disable vanilla processing, if unwrapped handling was enabled...
_vanillaProcessing = _vanillaProcessing && !_nonStandardCreation;
}
/**
* Although most of post-processing is done in resolve(), we only get
* access to referring property's annotations here; and this is needed
* to support per-property ObjectIds.
*/
@Override
public JsonDeserializer<?> createContextual(DeserializationContext ctxt,
BeanProperty property) throws JsonMappingException
{
ObjectIdReader oir = _objectIdReader;
// First: may have an override for Object Id:
if (property != null) {
final AnnotationIntrospector intr = ctxt.getAnnotationIntrospector();
final AnnotatedMember accessor = property.getMember();
final ObjectIdInfo objectIdInfo = intr.findObjectIdInfo(accessor);
if (objectIdInfo != null) { // some code duplication here as well (from BeanDeserializerFactory)
Class<?> implClass = objectIdInfo.getGeneratorType();
// Property-based generator is trickier
JavaType idType;
SettableBeanProperty idProp;
ObjectIdGenerator<?> idGen;
if (implClass == ObjectIdGenerators.PropertyGenerator.class) {
String propName = objectIdInfo.getPropertyName();
idProp = findProperty(propName);
if (idProp == null) {
throw new IllegalArgumentException("Invalid Object Id definition for "
+getBeanClass().getName()+": can not find property with name '"+propName+"'");
}
idType = idProp.getType();
idGen = new PropertyBasedObjectIdGenerator(objectIdInfo.getScope());
} else { // other types need to be simpler
JavaType type = ctxt.constructType(implClass);
idType = ctxt.getTypeFactory().findTypeParameters(type, ObjectIdGenerator.class)[0];
idProp = null;
idGen = ctxt.objectIdGeneratorInstance(accessor, objectIdInfo);
}
JsonDeserializer<?> deser = ctxt.findRootValueDeserializer(idType);
oir = ObjectIdReader.construct(idType, objectIdInfo.getPropertyName(),
idGen, deser, idProp);
}
}
// either way, need to resolve serializer:
if (oir != null && oir != _objectIdReader) {
return withObjectIdReader(oir);
}
return this;
}
/**
* Helper method called to see if given property is part of 'managed' property
* pair (managed + back reference), and if so, handle resolution details.
*/
protected SettableBeanProperty _resolveManagedReferenceProperty(DeserializationContext ctxt,
SettableBeanProperty prop)
{
String refName = prop.getManagedReferenceName();
if (refName == null) {
return prop;
}
JsonDeserializer<?> valueDeser = prop.getValueDeserializer();
SettableBeanProperty backProp = null;
boolean isContainer = false;
if (valueDeser instanceof BeanDeserializerBase) {
backProp = ((BeanDeserializerBase) valueDeser).findBackReference(refName);
} else if (valueDeser instanceof ContainerDeserializerBase<?>) {
JsonDeserializer<?> contentDeser = ((ContainerDeserializerBase<?>) valueDeser).getContentDeserializer();
if (!(contentDeser instanceof BeanDeserializerBase)) {
String deserName = (contentDeser == null) ? "NULL" : contentDeser.getClass().getName();
throw new IllegalArgumentException("Can not handle managed/back reference '"+refName
+"': value deserializer is of type ContainerDeserializerBase, but content type is not handled by a BeanDeserializer "
+" (instead it's of type "+deserName+")");
}
backProp = ((BeanDeserializerBase) contentDeser).findBackReference(refName);
isContainer = true;
} else if (valueDeser instanceof AbstractDeserializer) { // [JACKSON-368]: not easy to fix, alas
throw new IllegalArgumentException("Can not handle managed/back reference for abstract types (property "+_beanType.getRawClass().getName()+"."+prop.getName()+")");
} else {
throw new IllegalArgumentException("Can not handle managed/back reference '"+refName
+"': type for value deserializer is not BeanDeserializer or ContainerDeserializerBase, but "
+valueDeser.getClass().getName());
}
if (backProp == null) {
throw new IllegalArgumentException("Can not handle managed/back reference '"+refName+"': no back reference property found from type "
+prop.getType());
}
// also: verify that type is compatible
JavaType referredType = _beanType;
JavaType backRefType = backProp.getType();
if (!backRefType.getRawClass().isAssignableFrom(referredType.getRawClass())) {
throw new IllegalArgumentException("Can not handle managed/back reference '"+refName+"': back reference type ("
+backRefType.getRawClass().getName()+") not compatible with managed type ("
+referredType.getRawClass().getName()+")");
}
return new ManagedReferenceProperty(prop, refName, backProp,
_classAnnotations, isContainer);
}
/**
* Helper method called to see if given property might be so-called unwrapped
* property: these require special handling.
*/
protected SettableBeanProperty _resolveUnwrappedProperty(DeserializationContext ctxt,
SettableBeanProperty prop)
{
AnnotatedMember am = prop.getMember();
if (am != null) {
NameTransformer unwrapper = ctxt.getAnnotationIntrospector().findUnwrappingNameTransformer(am);
if (unwrapper != null) {
JsonDeserializer<Object> orig = prop.getValueDeserializer();
JsonDeserializer<Object> unwrapping = orig.unwrappingDeserializer(unwrapper);
if (unwrapping != orig && unwrapping != null) {
// might be cleaner to create new instance; but difficult to do reliably, so:
return prop.withValueDeserializer(unwrapping);
}
}
}
return null;
}
/**
* Helper method that will handle gruesome details of dealing with properties
* that have non-static inner class as value...
*/
protected SettableBeanProperty _resolveInnerClassValuedProperty(DeserializationContext ctxt,
SettableBeanProperty prop)
{
/* Should we encounter a property that has non-static inner-class
* as value, we need to add some more magic to find the "hidden" constructor...
*/
JsonDeserializer<Object> deser = prop.getValueDeserializer();
// ideally wouldn't rely on it being BeanDeserializerBase; but for now it'll have to do
if (deser instanceof BeanDeserializerBase) {
BeanDeserializerBase bd = (BeanDeserializerBase) deser;
ValueInstantiator vi = bd.getValueInstantiator();
if (!vi.canCreateUsingDefault()) { // no default constructor
Class<?> valueClass = prop.getType().getRawClass();
Class<?> enclosing = ClassUtil.getOuterClass(valueClass);
// and is inner class of the bean class...
if (enclosing != null && enclosing == _beanType.getRawClass()) {
for (Constructor<?> ctor : valueClass.getConstructors()) {
Class<?>[] paramTypes = ctor.getParameterTypes();
if (paramTypes.length == 1 && paramTypes[0] == enclosing) {
if (ctxt.getConfig().canOverrideAccessModifiers()) {
ClassUtil.checkAndFixAccess(ctor);
}
return new InnerClassProperty(prop, ctor);
}
}
}
}
}
return prop;
}
/*
/**********************************************************
/* Partial deserializer implementation
/**********************************************************
*/
@Override
public final Object deserializeWithType(JsonParser jp, DeserializationContext ctxt,
TypeDeserializer typeDeserializer)
throws IOException, JsonProcessingException
{
/* 16-Feb-2012, tatu: ObjectId may be used as well... need to check
* that first
*/
if (_objectIdReader != null) {
JsonToken t = jp.getCurrentToken();
// should be good enough check; we only care about Strings, integral numbers:
if (t != null && t.isScalarValue()) {
return deserializeUsingObjectId(jp, ctxt);
}
}
// In future could check current token... for now this should be enough:
return typeDeserializer.deserializeTypedFromObject(jp, ctxt);
}
/**
* Method called in cases where it looks like we got an Object Id
* to parse and use as a reference.
*/
protected final Object deserializeUsingObjectId(JsonParser jp, DeserializationContext ctxt)
throws IOException, JsonProcessingException
{
Object id = _objectIdReader.deserializer.deserialize(jp, ctxt);
ReadableObjectId roid = ctxt.findObjectId(id, _objectIdReader.generator);
// do we have it resolved?
Object pojo = roid.item;
if (pojo == null) { // not yet; should wait...
throw new IllegalStateException("Could not resolve Object Id ["+id+"]");
}
return pojo;
}
/*
/**********************************************************
/* Overridable helper methods
/**********************************************************
*/
protected void injectValues(DeserializationContext ctxt, Object bean)
throws IOException, JsonProcessingException
{
for (ValueInjector injector : _injectables) {
injector.inject(ctxt, bean);
}
}
/**
* Method called when a JSON property is encountered that has not matching
* setter, any-setter or field, and thus can not be assigned.
*/
@Override
protected void handleUnknownProperty(JsonParser jp, DeserializationContext ctxt,
Object beanOrClass, String propName)
throws IOException, JsonProcessingException
{
/* 22-Aug-2010, tatu: Caller now mostly checks for ignorable properties, so
* following should not be necessary. However, "handleUnknownProperties()" seems
* to still possibly need it so it is left for now.
*/
// If registered as ignorable, skip
if (_ignoreAllUnknown ||
(_ignorableProps != null && _ignorableProps.contains(propName))) {
jp.skipChildren();
return;
}
/* Otherwise use default handling (call handler(s); if not
* handled, throw exception or skip depending on settings)
*/
super.handleUnknownProperty(jp, ctxt, beanOrClass, propName);
}
/**
* Method called to handle set of one or more unknown properties,
* stored in their entirety in given {@link TokenBuffer}
* (as field entries, name and value).
*/
protected Object handleUnknownProperties(DeserializationContext ctxt, Object bean, TokenBuffer unknownTokens)
throws IOException, JsonProcessingException
{
// First: add closing END_OBJECT as marker
unknownTokens.writeEndObject();
// note: buffer does NOT have starting START_OBJECT
JsonParser bufferParser = unknownTokens.asParser();
while (bufferParser.nextToken() != JsonToken.END_OBJECT) {
String propName = bufferParser.getCurrentName();
// Unknown: let's call handler method
bufferParser.nextToken();
handleUnknownProperty(bufferParser, ctxt, bean, propName);
}
return bean;
}
/**
* Helper method called to (try to) locate deserializer for given sub-type of
* type that this deserializer handles.
*/
protected JsonDeserializer<Object> _findSubclassDeserializer(DeserializationContext ctxt,
Object bean, TokenBuffer unknownTokens)
throws IOException, JsonProcessingException
{
JsonDeserializer<Object> subDeser;
// First: maybe we have already created sub-type deserializer?
synchronized (this) {
subDeser = (_subDeserializers == null) ? null : _subDeserializers.get(new ClassKey(bean.getClass()));
}
if (subDeser != null) {
return subDeser;
}
// If not, maybe we can locate one. First, need provider
JavaType type = ctxt.constructType(bean.getClass());
/* 30-Jan-2012, tatu: Ideally we would be passing referring
* property; which in theory we could keep track of via
* ResolvableDeserializer (if we absolutely must...).
* But for now, let's not bother.
*/
// subDeser = ctxt.findValueDeserializer(type, _property);
subDeser = ctxt.findRootValueDeserializer(type);
// Also, need to cache it
if (subDeser != null) {
synchronized (this) {
if (_subDeserializers == null) {
_subDeserializers = new HashMap<ClassKey,JsonDeserializer<Object>>();;
}
_subDeserializers.put(new ClassKey(bean.getClass()), subDeser);
}
}
return subDeser;
}
/*
/**********************************************************
/* Helper methods for error reporting
/**********************************************************
*/
/**
* Method that will modify caught exception (passed in as argument)
* as necessary to include reference information, and to ensure it
* is a subtype of {@link IOException}, or an unchecked exception.
*<p>
* Rules for wrapping and unwrapping are bit complicated; essentially:
*<ul>
* <li>Errors are to be passed as is (if uncovered via unwrapping)
* <li>"Plain" IOExceptions (ones that are not of type
* {@link JsonMappingException} are to be passed as is
*</ul>
*/
public void wrapAndThrow(Throwable t, Object bean, String fieldName,
DeserializationContext ctxt)
throws IOException
{
/* 05-Mar-2009, tatu: But one nasty edge is when we get
* StackOverflow: usually due to infinite loop. But that
* usually gets hidden within an InvocationTargetException...
*/
while (t instanceof InvocationTargetException && t.getCause() != null) {
t = t.getCause();
}
// Errors and "plain" IOExceptions to be passed as is
if (t instanceof Error) {
throw (Error) t;
}
boolean wrap = (ctxt == null) || ctxt.isEnabled(DeserializationFeature.WRAP_EXCEPTIONS);
// Ditto for IOExceptions; except we may want to wrap mapping exceptions
if (t instanceof IOException) {
if (!wrap || !(t instanceof JsonMappingException)) {
throw (IOException) t;
}
} else if (!wrap) { // [JACKSON-407] -- allow disabling wrapping for unchecked exceptions
if (t instanceof RuntimeException) {
throw (RuntimeException) t;
}
}
// [JACKSON-55] Need to add reference information
throw JsonMappingException.wrapWithPath(t, bean, fieldName);
}
public void wrapAndThrow(Throwable t, Object bean, int index, DeserializationContext ctxt)
throws IOException
{
while (t instanceof InvocationTargetException && t.getCause() != null) {
t = t.getCause();
}
// Errors and "plain" IOExceptions to be passed as is
if (t instanceof Error) {
throw (Error) t;
}
boolean wrap = (ctxt == null) || ctxt.isEnabled(DeserializationFeature.WRAP_EXCEPTIONS);
// Ditto for IOExceptions; except we may want to wrap mapping exceptions
if (t instanceof IOException) {
if (!wrap || !(t instanceof JsonMappingException)) {
throw (IOException) t;
}
} else if (!wrap) { // [JACKSON-407] -- allow disabling wrapping for unchecked exceptions
if (t instanceof RuntimeException) {
throw (RuntimeException) t;
}
}
// [JACKSON-55] Need to add reference information
throw JsonMappingException.wrapWithPath(t, bean, index);
}
protected void wrapInstantiationProblem(Throwable t, DeserializationContext ctxt)
throws IOException
{
while (t instanceof InvocationTargetException && t.getCause() != null) {
t = t.getCause();
}
// Errors and "plain" IOExceptions to be passed as is
if (t instanceof Error) {
throw (Error) t;
}
boolean wrap = (ctxt == null) || ctxt.isEnabled(DeserializationFeature.WRAP_EXCEPTIONS);
if (t instanceof IOException) {
// Since we have no more information to add, let's not actually wrap..
throw (IOException) t;
} else if (!wrap) { // [JACKSON-407] -- allow disabling wrapping for unchecked exceptions
if (t instanceof RuntimeException) {
throw (RuntimeException) t;
}
}
throw ctxt.instantiationException(_beanType.getRawClass(), t);
}
}