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package com.fasterxml.jackson.databind.deser.impl;
import java.io.IOException;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.NullValueProvider;
import com.fasterxml.jackson.databind.deser.SettableBeanProperty;
import com.fasterxml.jackson.databind.introspect.AnnotatedField;
import com.fasterxml.jackson.databind.introspect.AnnotatedMember;
import com.fasterxml.jackson.databind.introspect.BeanPropertyDefinition;
import com.fasterxml.jackson.databind.jsontype.TypeDeserializer;
import com.fasterxml.jackson.databind.util.Annotations;
import com.fasterxml.jackson.databind.util.ClassUtil;
/**
* This concrete sub-class implements property that is set
* directly assigning to a Field.
*/
public final class FieldProperty
extends SettableBeanProperty
{
private static final long serialVersionUID = 1L;
final protected AnnotatedField _annotated;
/**
* Actual field to set when deserializing this property.
* Transient since there is no need to persist; only needed during
* construction of objects.
*/
final protected transient Field _field;
/**
* @since 2.9
*/
final protected boolean _skipNulls;
public FieldProperty(BeanPropertyDefinition propDef, JavaType type,
TypeDeserializer typeDeser, Annotations contextAnnotations, AnnotatedField field)
{
super(propDef, type, typeDeser, contextAnnotations);
_annotated = field;
_field = field.getAnnotated();
_skipNulls = NullsConstantProvider.isSkipper(_nullProvider);
}
protected FieldProperty(FieldProperty src, JsonDeserializer deser,
NullValueProvider nva) {
super(src, deser, nva);
_annotated = src._annotated;
_field = src._field;
_skipNulls = NullsConstantProvider.isSkipper(nva);
}
protected FieldProperty(FieldProperty src, PropertyName newName) {
super(src, newName);
_annotated = src._annotated;
_field = src._field;
_skipNulls = src._skipNulls;
}
/**
* Constructor used for JDK Serialization when reading persisted object
*/
protected FieldProperty(FieldProperty src)
{
super(src);
_annotated = src._annotated;
Field f = _annotated.getAnnotated();
if (f == null) {
throw new IllegalArgumentException("Missing field (broken JDK (de)serialization?)");
}
_field = f;
_skipNulls = src._skipNulls;
}
@Override
public SettableBeanProperty withName(PropertyName newName) {
return new FieldProperty(this, newName);
}
@Override
public SettableBeanProperty withValueDeserializer(JsonDeserializer deser) {
if (_valueDeserializer == deser) {
return this;
}
// 07-May-2019, tatu: As per [databind#2303], must keep VD/NVP in-sync if they were
NullValueProvider nvp = (_valueDeserializer == _nullProvider) ? deser : _nullProvider;
return new FieldProperty(this, deser, nvp);
}
@Override
public SettableBeanProperty withNullProvider(NullValueProvider nva) {
return new FieldProperty(this, _valueDeserializer, nva);
}
@Override
public void fixAccess(DeserializationConfig config) {
ClassUtil.checkAndFixAccess(_field,
config.isEnabled(MapperFeature.OVERRIDE_PUBLIC_ACCESS_MODIFIERS));
}
/*
/**********************************************************
/* BeanProperty impl
/**********************************************************
*/
@Override
public A getAnnotation(Class acls) {
return (_annotated == null) ? null : _annotated.getAnnotation(acls);
}
@Override public AnnotatedMember getMember() { return _annotated; }
/*
/**********************************************************
/* Overridden methods
/**********************************************************
*/
@Override
public void deserializeAndSet(JsonParser p,
DeserializationContext ctxt, Object instance) throws IOException
{
Object value;
if (p.hasToken(JsonToken.VALUE_NULL)) {
if (_skipNulls) {
return;
}
value = _nullProvider.getNullValue(ctxt);
} else if (_valueTypeDeserializer == null) {
value = _valueDeserializer.deserialize(p, ctxt);
// 04-May-2018, tatu: [databind#2023] Coercion from String (mostly) can give null
if (value == null) {
if (_skipNulls) {
return;
}
value = _nullProvider.getNullValue(ctxt);
}
} else {
value = _valueDeserializer.deserializeWithType(p, ctxt, _valueTypeDeserializer);
}
try {
_field.set(instance, value);
} catch (Exception e) {
_throwAsIOE(p, e, value);
}
}
@Override
public Object deserializeSetAndReturn(JsonParser p,
DeserializationContext ctxt, Object instance) throws IOException
{
Object value;
if (p.hasToken(JsonToken.VALUE_NULL)) {
if (_skipNulls) {
return instance;
}
value = _nullProvider.getNullValue(ctxt);
} else if (_valueTypeDeserializer == null) {
value = _valueDeserializer.deserialize(p, ctxt);
// 04-May-2018, tatu: [databind#2023] Coercion from String (mostly) can give null
if (value == null) {
if (_skipNulls) {
return instance;
}
value = _nullProvider.getNullValue(ctxt);
}
} else {
value = _valueDeserializer.deserializeWithType(p, ctxt, _valueTypeDeserializer);
}
try {
_field.set(instance, value);
} catch (Exception e) {
_throwAsIOE(p, e, value);
}
return instance;
}
@Override
public void set(Object instance, Object value) throws IOException
{
try {
_field.set(instance, value);
} catch (Exception e) {
// 15-Sep-2015, tatu: How could we get a ref to JsonParser?
_throwAsIOE(e, value);
}
}
@Override
public Object setAndReturn(Object instance, Object value) throws IOException
{
try {
_field.set(instance, value);
} catch (Exception e) {
// 15-Sep-2015, tatu: How could we get a ref to JsonParser?
_throwAsIOE(e, value);
}
return instance;
}
/*
/**********************************************************
/* JDK serialization handling
/**********************************************************
*/
Object readResolve() {
return new FieldProperty(this);
}
}