package com.fasterxml.jackson.module.paranamer;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.AnnotatedElement;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.introspect.Annotated;
import com.fasterxml.jackson.databind.introspect.AnnotatedParameter;
import com.fasterxml.jackson.databind.introspect.NopAnnotationIntrospector;
import com.thoughtworks.paranamer.*;
/**
* Stand-alone {@link AnnotationIntrospector} that defines functionality
* to discover names of constructor (and factory method) parameters,
* without using any defaulting.
* Can be used as chainable add-on introspector.
*/
public class ParanamerAnnotationIntrospector
extends NopAnnotationIntrospector
{
private static final long serialVersionUID = 1;
protected final Paranamer _paranamer;
public ParanamerAnnotationIntrospector() {
this(new CachingParanamer(new BytecodeReadingParanamer()));
}
public ParanamerAnnotationIntrospector(Paranamer pn) {
_paranamer = pn;
}
@Override
public String findDeserializationName(AnnotatedParameter param)
{
return _findParaName(param);
}
@Override
public PropertyName findNameForDeserialization(Annotated a)
{
if (a instanceof AnnotatedParameter) {
String rawName = _findParaName((AnnotatedParameter) a);
if (rawName != null) {
return new PropertyName(rawName);
}
}
return null;
}
/*
/**********************************************************
/* Internal methods
/**********************************************************
*/
protected String _findParaName(AnnotatedParameter param)
{
int index = param.getIndex();
AnnotatedElement ctor = param.getOwner().getAnnotated();
String[] names = _paranamer.lookupParameterNames((AccessibleObject) ctor);
if (names != null) {
if (index < names.length) {
return names[index];
}
}
return null;
}
}