com.pdd.pop.ext.fasterxml.jackson.databind.deser.DefaultDeserializationContext Maven / Gradle / Ivy
package com.pdd.pop.ext.fasterxml.jackson.databind.deser;
import java.util.*;
import java.util.Map.Entry;
import com.pdd.pop.ext.fasterxml.jackson.annotation.ObjectIdGenerator;
import com.pdd.pop.ext.fasterxml.jackson.annotation.ObjectIdResolver;
import com.pdd.pop.ext.fasterxml.jackson.annotation.ObjectIdGenerator.IdKey;
import com.pdd.pop.ext.fasterxml.jackson.core.JsonParser;
import com.pdd.pop.ext.fasterxml.jackson.databind.*;
import com.pdd.pop.ext.fasterxml.jackson.databind.cfg.HandlerInstantiator;
import com.pdd.pop.ext.fasterxml.jackson.databind.deser.impl.ReadableObjectId;
import com.pdd.pop.ext.fasterxml.jackson.databind.deser.impl.ReadableObjectId.Referring;
import com.pdd.pop.ext.fasterxml.jackson.databind.introspect.Annotated;
import com.pdd.pop.ext.fasterxml.jackson.databind.util.ClassUtil;
/**
* Complete {@link DeserializationContext} implementation that adds
* extended API for {@link ObjectMapper} (and {@link ObjectReader})
* to call, as well as implements certain parts that base class
* has left abstract.
* The remaining abstract methods ({@link #createInstance}, {@link #with})
* are left so that custom implementations will properly implement them
* to return intended subtype.
*/
public abstract class DefaultDeserializationContext
extends DeserializationContext
implements java.io.Serializable // since 2.1
{
private static final long serialVersionUID = 1L;
protected transient LinkedHashMap _objectIds;
private List _objectIdResolvers;
/**
* Constructor that will pass specified deserializer factory and
* cache: cache may be null (in which case default implementation
* will be used), factory cannot be null
*/
protected DefaultDeserializationContext(DeserializerFactory df, DeserializerCache cache) {
super(df, cache);
}
protected DefaultDeserializationContext(DefaultDeserializationContext src,
DeserializationConfig config, JsonParser jp, InjectableValues values) {
super(src, config, jp, values);
}
protected DefaultDeserializationContext(DefaultDeserializationContext src,
DeserializerFactory factory) {
super(src, factory);
}
/**
* @since 2.4.4
*/
protected DefaultDeserializationContext(DefaultDeserializationContext src) {
super(src);
}
/**
* Method needed to ensure that {@link ObjectMapper#copy} will work
* properly; specifically, that caches are cleared, but settings
* will otherwise remain identical; and that no sharing of state
* occurs.
*
* @since 2.4.4
*/
public DefaultDeserializationContext copy() {
throw new IllegalStateException("DefaultDeserializationContext sub-class not overriding copy()");
}
/*
/**********************************************************
/* Abstract methods impls, Object Id
/**********************************************************
*/
@Override
public ReadableObjectId findObjectId(Object id, ObjectIdGenerator gen, ObjectIdResolver resolverType)
{
/* 02-Apr-2015, tatu: As per [databind#742] should allow 'null', similar to how
* missing id already works.
*/
if (id == null) {
return null;
}
final ObjectIdGenerator.IdKey key = gen.key(id);
if (_objectIds == null) {
_objectIds = new LinkedHashMap();
} else {
ReadableObjectId entry = _objectIds.get(key);
if (entry != null) {
return entry;
}
}
// Not seen yet, must create entry and configure resolver.
ObjectIdResolver resolver = null;
if (_objectIdResolvers == null) {
_objectIdResolvers = new ArrayList(8);
} else {
for (ObjectIdResolver res : _objectIdResolvers) {
if (res.canUseFor(resolverType)) {
resolver = res;
break;
}
}
}
if (resolver == null) {
resolver = resolverType.newForDeserialization(this);
_objectIdResolvers.add(resolver);
}
ReadableObjectId entry = createReadableObjectId(key);
entry.setResolver(resolver);
_objectIds.put(key, entry);
return entry;
}
/**
* Overridable factory method to create a new instance of ReadableObjectId or its
* subclass. It is meant to be overridden when custom ReadableObjectId is
* needed for {@link #tryToResolveUnresolvedObjectId}.
* Default implementation simply constructs default {@link ReadableObjectId} with
* given key.
*
* @param key The key to associate with the new ReadableObjectId
* @return New ReadableObjectId instance
*
* @since 2.7
*/
protected ReadableObjectId createReadableObjectId(IdKey key) {
return new ReadableObjectId(key);
}
@Override
public void checkUnresolvedObjectId() throws UnresolvedForwardReference
{
if (_objectIds == null) {
return;
}
// 29-Dec-2014, tatu: As per [databind#299], may also just let unresolved refs be...
if (!isEnabled(DeserializationFeature.FAIL_ON_UNRESOLVED_OBJECT_IDS)) {
return;
}
UnresolvedForwardReference exception = null;
for (Entry entry : _objectIds.entrySet()) {
ReadableObjectId roid = entry.getValue();
if (!roid.hasReferringProperties()) {
continue;
}
// as per [databind#675], allow resolution at this point
if (tryToResolveUnresolvedObjectId(roid)) {
continue;
}
if (exception == null) {
exception = new UnresolvedForwardReference(getParser(), "Unresolved forward references for: ");
}
Object key = roid.getKey().key;
for (Iterator iterator = roid.referringProperties(); iterator.hasNext(); ) {
Referring referring = iterator.next();
exception.addUnresolvedId(key, referring.getBeanType(), referring.getLocation());
}
}
if (exception != null) {
throw exception;
}
}
/**
* Overridable helper method called to try to resolve otherwise unresolvable {@link ReadableObjectId};
* and if this succeeds, return true to indicate problem has been resolved in
* some way, so that caller can avoid reporting it as an error.
*
* Default implementation simply calls {@link ReadableObjectId#tryToResolveUnresolved} and
* returns whatever it returns.
*
* @since 2.6
*/
protected boolean tryToResolveUnresolvedObjectId(ReadableObjectId roid)
{
return roid.tryToResolveUnresolved(this);
}
/*
/**********************************************************
/* Abstract methods impls, other factory methods
/**********************************************************
*/
@SuppressWarnings("unchecked")
@Override
public JsonDeserializer