/*
* Copyright 2014-2016 the original author or authors.
*
* 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.springframework.data.rest.webmvc.json.patch;
import lombok.NonNull;
import lombok.RequiredArgsConstructor;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
/**
* {@link LateObjectEvaluator} implementation that assumes values represented as JSON objects.
*
* @author Craig Walls
* @author Oliver Trosien
* @author Oliver Gierke
*/
@RequiredArgsConstructor
class JsonLateObjectEvaluator implements LateObjectEvaluator {
private final @NonNull ObjectMapper mapper;
private final @NonNull JsonNode valueNode;
/*
* (non-Javadoc)
* @see org.springframework.data.rest.webmvc.json.patch.LateObjectEvaluator#evaluate(java.lang.Class)
*/
@Override
public <T> Object evaluate(Class<T> type) {
try {
return mapper.readValue(valueNode.traverse(), type);
} catch (Exception e) {
throw new PatchException(String.format("Could not read %s into %s!", valueNode, type), e);
}
}
}