public EnumMapDeserializer(
JavaType mapType,
KeyDeserializer keyDeserializer,
JsonDeserializer<?> valueDeser,
TypeDeserializer valueTypeDeser) {
super(mapType);
_mapType = mapType;
_enumClass = mapType.getKeyType().getRawClass();
_keyDeserializer = keyDeserializer;
_valueDeserializer = (JsonDeserializer<Object>) valueDeser;
_valueTypeDeserializer = valueTypeDeser;
}
@Override
public EnumMap<?, ?> deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
// Ok: must point to START_OBJECT
if (jp.getCurrentToken() != JsonToken.START_OBJECT) {
return _deserializeFromEmpty(jp, ctxt);
}
EnumMap result = constructMap();
final JsonDeserializer<Object> valueDes = _valueDeserializer;
final TypeDeserializer typeDeser = _valueTypeDeserializer;
while ((jp.nextToken()) == JsonToken.FIELD_NAME) {
String keyName = jp.getCurrentName(); // just for error message
// but we need to let key deserializer handle it separately, nonetheless
Enum<?> key = (Enum<?>) _keyDeserializer.deserializeKey(keyName, ctxt);
if (key == null) {
if (!ctxt.isEnabled(DeserializationFeature.READ_UNKNOWN_ENUM_VALUES_AS_NULL)) {
throw ctxt.weirdStringException(
keyName,
_enumClass,
"value not one of declared Enum instance names for " + _mapType.getKeyType());
}
/* 24-Mar-2012, tatu: Null won't work as a key anyway, so let's
* just skip the entry then. But we must skip the value as well, if so.
*/
jp.nextToken();
jp.skipChildren();
continue;
}
// And then the value...
JsonToken t = jp.nextToken();
/* note: MUST check for nulls separately: deserializers will
* not handle them (and maybe fail or return bogus data)
*/
Object value;
try {
if (t == JsonToken.VALUE_NULL) {
value = valueDes.getNullValue(ctxt);
} else if (typeDeser == null) {
value = valueDes.deserialize(jp, ctxt);
} else {
value = valueDes.deserializeWithType(jp, ctxt, typeDeser);
}
} catch (Exception e) {
wrapAndThrow(e, result, keyName);
return null;
}
result.put(key, value);
}
return result;
}
/** @since 2.8 */
public static MapSerializer construct(
Set<String> ignoredEntries,
JavaType mapType,
boolean staticValueType,
TypeSerializer vts,
JsonSerializer<Object> keySerializer,
JsonSerializer<Object> valueSerializer,
Object filterId) {
JavaType keyType, valueType;
if (mapType == null) {
keyType = valueType = UNSPECIFIED_TYPE;
} else {
keyType = mapType.getKeyType();
valueType = mapType.getContentType();
}
// If value type is final, it's same as forcing static value typing:
if (!staticValueType) {
staticValueType = (valueType != null && valueType.isFinal());
} else {
// also: Object.class can not be handled as static, ever
if (valueType.getRawClass() == Object.class) {
staticValueType = false;
}
}
MapSerializer ser =
new MapSerializer(
ignoredEntries,
keyType,
valueType,
staticValueType,
vts,
keySerializer,
valueSerializer);
if (filterId != null) {
ser = ser.withFilterId(filterId);
}
return ser;
}
/**
* Method called to finalize setup of this deserializer, when it is known for which property
* deserializer is needed for.
*/
@Override
public JsonDeserializer<?> createContextual(DeserializationContext ctxt, BeanProperty property)
throws JsonMappingException {
// note: instead of finding key deserializer, with enums we actually
// work with regular deserializers (less code duplication; but not
// quite as clean as it ought to be)
KeyDeserializer kd = _keyDeserializer;
if (kd == null) {
kd = ctxt.findKeyDeserializer(_mapType.getKeyType(), property);
}
JsonDeserializer<?> vd = _valueDeserializer;
final JavaType vt = _mapType.getContentType();
if (vd == null) {
vd = ctxt.findContextualValueDeserializer(vt, property);
} else { // if directly assigned, probably not yet contextual, so:
vd = ctxt.handleSecondaryContextualization(vd, property, vt);
}
TypeDeserializer vtd = _valueTypeDeserializer;
if (vtd != null) {
vtd = vtd.forProperty(property);
}
return withResolved(kd, vd, vtd);
}
public static MapSerializer construct(
String[] ignoredList,
JavaType mapType,
boolean staticValueType,
TypeSerializer vts,
JsonSerializer<Object> keySerializer,
JsonSerializer<Object> valueSerializer) {
HashSet<String> ignoredEntries = toSet(ignoredList);
JavaType keyType, valueType;
if (mapType == null) {
keyType = valueType = UNSPECIFIED_TYPE;
} else {
keyType = mapType.getKeyType();
valueType = mapType.getContentType();
}
// If value type is final, it's same as forcing static value typing:
if (!staticValueType) {
staticValueType = (valueType != null && valueType.isFinal());
}
return new MapSerializer(
ignoredEntries, keyType, valueType, staticValueType, vts, keySerializer, valueSerializer);
}
/**
* Method called to see if given method has annotations that indicate a more specific type than
* what the argument specifies. If annotations are present, they must specify compatible Class;
* instance of which can be assigned using the method. This means that the Class has to be raw
* class of type, or its sub-class (or, implementing class if original Class instance is an
* interface).
*
* @param a Method or field that the type is associated with
* @param type Type derived from the setter argument
* @return Original type if no annotations are present; or a more specific type derived from it if
* type annotation(s) was found
* @throws JsonMappingException if invalid annotation is found
*/
private JavaType modifyTypeByAnnotation(DeserializationContext ctxt, Annotated a, JavaType type)
throws JsonMappingException {
// first: let's check class for the instance itself:
AnnotationIntrospector intr = ctxt.getAnnotationIntrospector();
Class<?> subclass = intr.findDeserializationType(a, type);
if (subclass != null) {
try {
type = type.narrowBy(subclass);
} catch (IllegalArgumentException iae) {
throw new JsonMappingException(
"Failed to narrow type "
+ type
+ " with concrete-type annotation (value "
+ subclass.getName()
+ "), method '"
+ a.getName()
+ "': "
+ iae.getMessage(),
null,
iae);
}
}
// then key class
if (type.isContainerType()) {
Class<?> keyClass = intr.findDeserializationKeyType(a, type.getKeyType());
if (keyClass != null) {
// illegal to use on non-Maps
if (!(type instanceof MapLikeType)) {
throw new JsonMappingException(
"Illegal key-type annotation: type " + type + " is not a Map(-like) type");
}
try {
type = ((MapLikeType) type).narrowKey(keyClass);
} catch (IllegalArgumentException iae) {
throw new JsonMappingException(
"Failed to narrow key type "
+ type
+ " with key-type annotation ("
+ keyClass.getName()
+ "): "
+ iae.getMessage(),
null,
iae);
}
}
JavaType keyType = type.getKeyType();
/* 21-Mar-2011, tatu: ... and associated deserializer too (unless already assigned)
* (not 100% why or how, but this does seem to get called more than once, which
* is not good: for now, let's just avoid errors)
*/
if (keyType != null && keyType.getValueHandler() == null) {
Object kdDef = intr.findKeyDeserializer(a);
if (kdDef != null) {
KeyDeserializer kd = ctxt.keyDeserializerInstance(a, kdDef);
if (kd != null) {
type = ((MapLikeType) type).withKeyValueHandler(kd);
keyType = type.getKeyType(); // just in case it's used below
}
}
}
// and finally content class; only applicable to structured types
Class<?> cc = intr.findDeserializationContentType(a, type.getContentType());
if (cc != null) {
try {
type = type.narrowContentsBy(cc);
} catch (IllegalArgumentException iae) {
throw new JsonMappingException(
"Failed to narrow content type "
+ type
+ " with content-type annotation ("
+ cc.getName()
+ "): "
+ iae.getMessage(),
null,
iae);
}
}
// ... as well as deserializer for contents:
JavaType contentType = type.getContentType();
if (contentType.getValueHandler()
== null) { // as with above, avoid resetting (which would trigger exception)
Object cdDef = intr.findContentDeserializer(a);
if (cdDef != null) {
JsonDeserializer<?> cd = null;
if (cdDef instanceof JsonDeserializer<?>) {
cdDef = (JsonDeserializer<?>) cdDef;
} else {
Class<?> cdClass =
_verifyAsClass(cdDef, "findContentDeserializer", JsonDeserializer.None.class);
if (cdClass != null) {
cd = ctxt.deserializerInstance(a, cdClass);
}
}
if (cd != null) {
type = type.withContentValueHandler(cd);
}
}
}
}
return type;
}
