| 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 extends Annotation> A getAnnotation(Class<A> 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); |
| } |
| } |