/**
* Contextualization is needed to see whether we can "inline" deserialization of String values, or
* if we have to use separate value deserializer.
*/
@Override
public JsonDeserializer<?> createContextual(DeserializationContext ctxt, BeanProperty property)
throws JsonMappingException {
JsonDeserializer<?> deser = _elementDeserializer;
// May have a content converter
deser = findConvertingContentDeserializer(ctxt, property, deser);
JavaType type = ctxt.constructType(String.class);
if (deser == null) {
deser = ctxt.findContextualValueDeserializer(type, property);
} else { // if directly assigned, probably not yet contextual, so:
deser = ctxt.handleSecondaryContextualization(deser, property, type);
}
// One more thing: allow unwrapping?
Boolean unwrapSingle =
findFormatFeature(
ctxt, property, String[].class, JsonFormat.Feature.ACCEPT_SINGLE_VALUE_AS_ARRAY);
// Ok ok: if all we got is the default String deserializer, can just forget about it
if ((deser != null) && isDefaultDeserializer(deser)) {
deser = null;
}
if ((_elementDeserializer == deser) && (_unwrapSingle == unwrapSingle)) {
return this;
}
return new StringArrayDeserializer(deser, unwrapSingle);
}
@Override
public JsonDeserializer<Object> createBuilderBasedDeserializer(
DeserializationContext ctxt,
JavaType valueType,
BeanDescription beanDesc,
Class<?> builderClass)
throws JsonMappingException {
// First: need a BeanDescription for builder class
JavaType builderType = ctxt.constructType(builderClass);
BeanDescription builderDesc = ctxt.getConfig().introspectForBuilder(builderType);
return buildBuilderBasedDeserializer(ctxt, valueType, builderDesc);
}
protected void addObjectIdReader(
DeserializationContext ctxt, BeanDescription beanDesc, BeanDeserializerBuilder builder)
throws JsonMappingException {
ObjectIdInfo objectIdInfo = beanDesc.getObjectIdInfo();
if (objectIdInfo == null) {
return;
}
Class<?> implClass = objectIdInfo.getGeneratorType();
JavaType idType;
SettableBeanProperty idProp;
ObjectIdGenerator<?> gen;
// Just one special case: Property-based generator is trickier
if (implClass
== ObjectIdGenerators.PropertyGenerator.class) { // most special one, needs extra work
String propName = objectIdInfo.getPropertyName();
idProp = builder.findProperty(propName);
if (idProp == null) {
throw new IllegalArgumentException(
"Invalid Object Id definition for "
+ beanDesc.getBeanClass().getName()
+ ": can not find property with name '"
+ propName
+ "'");
}
idType = idProp.getType();
gen = new PropertyBasedObjectIdGenerator(objectIdInfo.getScope());
} else {
JavaType type = ctxt.constructType(implClass);
idType = ctxt.getTypeFactory().findTypeParameters(type, ObjectIdGenerator.class)[0];
idProp = null;
gen = ctxt.objectIdGeneratorInstance(beanDesc.getClassInfo(), objectIdInfo);
}
// also: unlike with value deserializers, let's just resolve one we need here
JsonDeserializer<?> deser = ctxt.findRootValueDeserializer(idType);
builder.setObjectIdReader(
ObjectIdReader.construct(idType, objectIdInfo.getPropertyName(), gen, deser, idProp));
}
public void testDeserializationContext() throws Exception {
DeserializationContext ctxt = MAPPER.getDeserializationContext();
// should be ok to try to resolve `null`
assertNull(ctxt.constructType((Class<?>) null));
assertNull(ctxt.constructType((java.lang.reflect.Type) null));
}