com.addthis.codec.jackson.WriteonlyPropertyIgnorer.java Source code

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/*
 * 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.addthis.codec.jackson;

import java.io.IOException;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.ObjectCodec;
import com.fasterxml.jackson.databind.BeanDescription;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.deser.DeserializationProblemHandler;
import com.fasterxml.jackson.databind.introspect.BeanPropertyDefinition;

public class WriteonlyPropertyIgnorer extends DeserializationProblemHandler {

    @Override
    public boolean handleUnknownProperty(DeserializationContext ctxt, JsonParser jp,
            JsonDeserializer<?> deserializer, Object beanOrClass, String propertyName)
            throws IOException, JsonProcessingException {
        ObjectCodec objectCodec = jp.getCodec();
        if (objectCodec instanceof ObjectMapper) {
            ObjectMapper objectMapper = (ObjectMapper) objectCodec;
            BeanDescription beanDescription = objectMapper.getSerializationConfig()
                    .introspect(ctxt.constructType(beanOrClass.getClass()));
            for (BeanPropertyDefinition propertyDefinition : beanDescription.findProperties()) {
                if (propertyName.equals(propertyDefinition.getName())) {
                    jp.skipChildren();
                    return true;
                }
            }
        }
        return false;
    }
}