/*
* Copyright 2011 VZ Netzwerke Ltd
* Copyright 2014 devbliss GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.mongojack.internal;
import org.mongojack.DBRef;
import org.mongojack.Id;
import org.mongojack.ObjectId;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.introspect.Annotated;
import com.fasterxml.jackson.databind.introspect.NopAnnotationIntrospector;
import com.fasterxml.jackson.databind.type.TypeFactory;
import com.fasterxml.jackson.databind.PropertyName;
/**
* Annotation introspector that supports @ObjectId's
*
* @author James Roper
* @since 1.0
*/
public class MongoAnnotationIntrospector extends NopAnnotationIntrospector {
private final TypeFactory typeFactory;
public MongoAnnotationIntrospector(TypeFactory typeFactory) {
this.typeFactory = typeFactory;
}
// Handling of javax.persistence.Id
@Override
public PropertyName findNameForDeserialization(Annotated a) {
String rawName = findPropertyName(a);
if (rawName != null) {
return new PropertyName(rawName);
}
return null;
}
@Override
public PropertyName findNameForSerialization(Annotated a) {
String rawName = findPropertyName(a);
if (rawName != null) {
return new PropertyName(rawName);
}
return null;
}
private String findPropertyName(Annotated annotated) {
if (annotated.hasAnnotation(Id.class)
|| annotated.hasAnnotation(javax.persistence.Id.class)) {
return "_id";
}
return null;
}
// Handling of ObjectId annotated properties
@Override
public Object findSerializer(Annotated am) {
if (am.hasAnnotation(ObjectId.class)) {
return ObjectIdSerializer.class;
}
return null;
}
@Override
public Object findDeserializer(Annotated am) {
if (am.hasAnnotation(ObjectId.class)) {
return findObjectIdDeserializer(typeFactory.constructType(am
.getGenericType()));
}
return null;
}
@Override
public JsonDeserializer findContentDeserializer(Annotated am) {
if (am.hasAnnotation(ObjectId.class)) {
JavaType type = typeFactory.constructType(am.getGenericType());
if (type.isCollectionLikeType()) {
return findObjectIdDeserializer(type.containedType(0));
} else if (type.isMapLikeType()) {
return findObjectIdDeserializer(type.containedType(1));
}
}
return null;
}
public JsonDeserializer findObjectIdDeserializer(JavaType type) {
if (type.getRawClass() == String.class) {
return new ObjectIdDeserializers.ToStringDeserializer();
} else if (type.getRawClass() == byte[].class) {
return new ObjectIdDeserializers.ToByteArrayDeserializer();
} else if (type.getRawClass() == DBRef.class) {
JavaType dbRefType;
if (type.isContainerType()) {
if (type.isCollectionLikeType()) {
dbRefType = type.containedType(0);
} else if (type.isMapLikeType()) {
dbRefType = type.containedType(1);
} else {
return null;
}
} else {
dbRefType = type;
}
JsonDeserializer keyDeserializer = findObjectIdDeserializer(dbRefType
.containedType(1));
return new DBRefDeserializer(dbRefType.containedType(0),
dbRefType.containedType(1), keyDeserializer);
} else if (type.getRawClass() == org.bson.types.ObjectId.class) {
// Don't know why someone would annotated an ObjectId with
// @ObjectId, but handle it
return new ObjectIdDeserializers.ToObjectIdDeserializer();
}
return null;
}
}