com.fasterxml.jackson.databind.deser.impl.InnerClassProperty Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including
all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and
Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
package com.fasterxml.jackson.databind.deser.impl;
import java.io.IOException;
import java.lang.reflect.Constructor;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.SettableBeanProperty;
import com.fasterxml.jackson.databind.introspect.*;
import com.fasterxml.jackson.databind.util.ClassUtil;
/**
* This sub-class is used to handle special case of value being a
* non-static inner class. If so, we will have to use a special
* alternative for default constructor; but otherwise can delegate
* to regular implementation.
*/
public final class InnerClassProperty
extends SettableBeanProperty.Delegating
{
private static final long serialVersionUID = 1L;
/**
* Constructor used when deserializing this property.
* Transient since there is no need to persist; only needed during
* construction of objects.
*/
final protected transient Constructor> _creator;
/**
* Serializable version of single-arg constructor we use for value instantiation.
*/
protected AnnotatedConstructor _annotated;
public InnerClassProperty(SettableBeanProperty delegate,
Constructor> ctor)
{
super(delegate);
_creator = ctor;
}
/**
* Constructor used with JDK Serialization; needed to handle transient
* Constructor, wrap/unwrap in/out-of Annotated variant.
*/
protected InnerClassProperty(SettableBeanProperty src, AnnotatedConstructor ann)
{
super(src);
_annotated = ann;
_creator = (_annotated == null) ? null : _annotated.getAnnotated();
if (_creator == null) {
throw new IllegalArgumentException("Missing constructor (broken JDK (de)serialization?)");
}
}
@Override
protected SettableBeanProperty withDelegate(SettableBeanProperty d) {
if (d == this.delegate) {
return this;
}
return new InnerClassProperty(d, _creator);
}
/*
/**********************************************************
/* Deserialization methods
/**********************************************************
*/
@Override
public void deserializeAndSet(JsonParser p, DeserializationContext ctxt, Object bean)
throws IOException
{
JsonToken t = p.currentToken();
Object value;
if (t == JsonToken.VALUE_NULL) {
value = _valueDeserializer.getNullValue(ctxt);
} else if (_valueTypeDeserializer != null) {
value = _valueDeserializer.deserializeWithType(p, ctxt, _valueTypeDeserializer);
} else { // the usual case
try {
value = _creator.newInstance(bean);
} catch (Exception e) {
ClassUtil.unwrapAndThrowAsIAE(e, String.format(
"Failed to instantiate class %s, problem: %s",
_creator.getDeclaringClass().getName(), e.getMessage()));
value = null;
}
_valueDeserializer.deserialize(p, ctxt, value);
}
set(bean, value);
}
@Override
public Object deserializeSetAndReturn(JsonParser p, DeserializationContext ctxt, Object instance)
throws IOException
{
return setAndReturn(instance, deserialize(p, ctxt));
}
// these are fine with defaults
// public final void set(Object instance, Object value) throws IOException { }
// public Object setAndReturn(Object instance, Object value) throws IOException { }
/*
/**********************************************************
/* JDK serialization handling
/**********************************************************
*/
// When reading things back,
Object readResolve() {
return new InnerClassProperty(this, _annotated);
}
Object writeReplace() {
// need to construct a fake instance to support serialization
if (_annotated == null) {
return new InnerClassProperty(this, new AnnotatedConstructor(null, _creator, null, null));
}
return this;
}
}
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