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 SettableBeanProperty implementation used for virtual property that represents Object Id that is used for some POJO types (or properties).
/** * 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 extends Annotation> A getAnnotation(Class<A> 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); } }