com.infinities.nova.util.jackson.NullStringSerializer.java Source code

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Here is the source code for com.infinities.nova.util.jackson.NullStringSerializer.java

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/*******************************************************************************
 * Copyright 2015 InfinitiesSoft Solutions Inc.
 *
 * 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.infinities.nova.util.jackson;

import java.io.IOException;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

/**
 * @author pohsun
 *
 */
public class NullStringSerializer extends JsonSerializer<String> {

    public static final String NULL_SUBSITUTE = "null";

    /*
     * (non-Javadoc)
     * 
     * @see
     * com.fasterxml.jackson.databind.JsonSerializer#serialize(java.lang.Object,
     * com.fasterxml.jackson.core.JsonGenerator,
     * com.fasterxml.jackson.databind.SerializerProvider)
     */
    @Override
    public void serialize(String value, JsonGenerator jgen, SerializerProvider provider)
            throws IOException, JsonProcessingException {
        if (value.equals(NULL_SUBSITUTE)) {
            jgen.writeNull();
        } else {
            jgen.writeString(value);
        }

    }

}