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/*
* Copyright 2014 Basis Technology Corp.
*
* 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 com.basistech.rosette.dm.jackson;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.databind.DatabindContext;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.jsontype.impl.TypeIdResolverBase;
/**
* Jackson custom type info resolver for the data model.
*/
public class DmTypeIdResolver extends TypeIdResolverBase {
@Override
public void init(JavaType javaType) {
//
}
@Override
public String idFromValue(Object o) {
return idFromValueAndType(o, o.getClass());
}
@Override
public String idFromValueAndType(Object o, Class aClass) {
KnownAttribute attribute = KnownAttribute.getAttributeForClass(o.getClass());
return attribute.key();
}
@Override
public JavaType typeFromId(DatabindContext context, String id) {
KnownAttribute attribute = KnownAttribute.getAttributeForKey(id);
if (attribute == null) {
attribute = KnownAttribute.UNKNOWN; // extension mechanism, build a BaseAttribute.
}
return context.constructType(attribute.attributeClass());
}
@Override
public JsonTypeInfo.Id getMechanism() {
return JsonTypeInfo.Id.CUSTOM;
}
}