com.fasterxml.jackson.databind.deser.impl.ObjectIdValueProperty Maven / Gradle / Ivy
package com.fasterxml.jackson.databind.deser.impl;
import java.io.IOException;
import java.lang.annotation.Annotation;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.*;
import com.fasterxml.jackson.databind.introspect.AnnotatedMember;
/**
* Specialized {@link SettableBeanProperty} implementation used
* for virtual property that represents Object Id that is used
* for some POJO types (or properties).
*/
public final class ObjectIdValueProperty
extends SettableBeanProperty
{
private static final long serialVersionUID = 1L;
protected final ObjectIdReader _objectIdReader;
public ObjectIdValueProperty(ObjectIdReader objectIdReader,
PropertyMetadata metadata)
{
super(objectIdReader.propertyName, objectIdReader.getIdType(), metadata,
objectIdReader.getDeserializer());
_objectIdReader = objectIdReader;
}
protected ObjectIdValueProperty(ObjectIdValueProperty src, JsonDeserializer deser,
NullValueProvider nva)
{
super(src, deser, nva);
_objectIdReader = src._objectIdReader;
}
protected ObjectIdValueProperty(ObjectIdValueProperty src, PropertyName newName) {
super(src, newName);
_objectIdReader = src._objectIdReader;
}
@Override
public SettableBeanProperty withName(PropertyName newName) {
return new ObjectIdValueProperty(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 ObjectIdValueProperty(this, deser, nvp);
}
@Override
public SettableBeanProperty withNullProvider(NullValueProvider nva) {
return new ObjectIdValueProperty(this, _valueDeserializer, nva);
}
// // // BeanProperty impl
@Override
public A getAnnotation(Class acls) {
return null;
}
@Override public AnnotatedMember getMember() { return null; }
/*
/**********************************************************
/* Deserialization methods
/**********************************************************
*/
@Override
public void deserializeAndSet(JsonParser p, DeserializationContext ctxt,
Object instance) throws IOException
{
deserializeSetAndReturn(p, ctxt, instance);
}
@Override
public Object deserializeSetAndReturn(JsonParser p,
DeserializationContext ctxt, Object instance) throws IOException
{
/* 02-Apr-2015, tatu: Actually, as per [databind#742], let it be;
* missing or null id is needed for some cases, such as cases where id
* will be generated externally, at a later point, and is not available
* quite yet. Typical use case is with DB inserts.
*/
// note: no null checks (unlike usually); deserializer should fail if one found
if (p.hasToken(JsonToken.VALUE_NULL)) {
return null;
}
Object id = _valueDeserializer.deserialize(p, ctxt);
ReadableObjectId roid = ctxt.findObjectId(id, _objectIdReader.generator, _objectIdReader.resolver);
roid.bindItem(instance);
// also: may need to set a property value as well
SettableBeanProperty idProp = _objectIdReader.idProperty;
if (idProp != null) {
return idProp.setAndReturn(instance, id);
}
return instance;
}
@Override
public void set(Object instance, Object value) throws IOException {
setAndReturn(instance, value);
}
@Override
public Object setAndReturn(Object instance, Object value) throws IOException
{
SettableBeanProperty idProp = _objectIdReader.idProperty;
if (idProp == null) {
throw new UnsupportedOperationException(
"Should not call set() on ObjectIdProperty that has no SettableBeanProperty");
}
return idProp.setAndReturn(instance, value);
}
}