@SuppressWarnings("unchecked")
public JsonDeserializer<Object> buildThrowableDeserializer(
DeserializationContext ctxt, JavaType type, BeanDescription beanDesc)
throws JsonMappingException {
final DeserializationConfig config = ctxt.getConfig();
// first: construct like a regular bean deserializer...
BeanDeserializerBuilder builder = constructBeanDeserializerBuilder(ctxt, beanDesc);
builder.setValueInstantiator(findValueInstantiator(ctxt, beanDesc));
addBeanProps(ctxt, beanDesc, builder);
// (and assume there won't be any back references)
// But then let's decorate things a bit
/* To resolve [JACKSON-95], need to add "initCause" as setter
* for exceptions (sub-classes of Throwable).
*/
AnnotatedMethod am = beanDesc.findMethod("initCause", INIT_CAUSE_PARAMS);
if (am != null) { // should never be null
SimpleBeanPropertyDefinition propDef = new SimpleBeanPropertyDefinition(am, "cause");
SettableBeanProperty prop =
constructSettableProperty(ctxt, beanDesc, propDef, am.getGenericParameterType(0));
if (prop != null) {
/* 21-Aug-2011, tatus: We may actually have found 'cause' property
* to set (with new 1.9 code)... but let's replace it just in case,
* otherwise can end up with odd errors.
*/
builder.addOrReplaceProperty(prop, true);
}
}
// And also need to ignore "localizedMessage"
builder.addIgnorable("localizedMessage");
// [JACKSON-794]: JDK 7 also added "getSuppressed", skip if we have such data:
builder.addIgnorable("suppressed");
/* As well as "message": it will be passed via constructor,
* as there's no 'setMessage()' method
*/
builder.addIgnorable("message");
// [JACKSON-440]: update builder now that all information is in?
if (_factoryConfig.hasDeserializerModifiers()) {
for (BeanDeserializerModifier mod : _factoryConfig.deserializerModifiers()) {
builder = mod.updateBuilder(config, beanDesc, builder);
}
}
JsonDeserializer<?> deserializer = builder.build();
/* At this point it ought to be a BeanDeserializer; if not, must assume
* it's some other thing that can handle deserialization ok...
*/
if (deserializer instanceof BeanDeserializer) {
deserializer = new ThrowableDeserializer((BeanDeserializer) deserializer);
}
// [JACKSON-440]: may have modifier(s) that wants to modify or replace serializer we just built:
if (_factoryConfig.hasDeserializerModifiers()) {
for (BeanDeserializerModifier mod : _factoryConfig.deserializerModifiers()) {
deserializer = mod.modifyDeserializer(config, beanDesc, deserializer);
}
}
return (JsonDeserializer<Object>) deserializer;
}
