JsonProvider.java

/**
 * Copyright (c) 2011 Toby Brain
 * 
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *  
 *  The above copyright notice and this permission notice shall be included in
 *  all copies or substantial portions of the Software.
 *  
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *  THE SOFTWARE.
 */
package com.createsend.util.jersey;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.text.DateFormat;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;

import org.codehaus.jackson.jaxrs.JacksonJsonProvider;
import org.codehaus.jackson.map.DeserializationConfig;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.annotate.JsonSerialize.Inclusion;

/**
 * An extension of the Jersey JacksonJsonProvider used to set Jackson 
 * serialisation/deserialisation properties
 */
public class JsonProvider extends JacksonJsonProvider {

    public static final DateFormat ApiDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm") {
        final SimpleDateFormat ApiDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        final SimpleDateFormat ApiDateFormatTz = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");

        @Override
        public Date parse(String source, ParsePosition pos) {
            if (source.length() - pos.getIndex() == ApiDateFormat.toPattern().length())
                return ApiDateFormat.parse(source, pos);
            return ApiDateFormatTz.parse(source, pos);
        }
    };

    @Override
    public void writeTo(Object value, Class<?> type, Type genericType,
            Annotation[] annotations, MediaType mediaType,
            MultivaluedMap<String, Object> httpHeaders,
            OutputStream entityStream) throws IOException {
        ObjectMapper mapper = locateMapper(type, mediaType);
        mapper.setSerializationInclusion(Inclusion.NON_NULL);
        
        super.writeTo(value, type, genericType, annotations, mediaType, httpHeaders,
                entityStream);
    }
    
    @Override
    public Object readFrom(Class<Object> type, Type genericType,
            Annotation[] annotations, MediaType mediaType,
            MultivaluedMap<String, String> httpHeaders, InputStream entityStream)
            throws IOException {
        ObjectMapper mapper = locateMapper(type, mediaType);
        mapper.setDateFormat(ApiDateFormat);
        mapper.disable(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES);

        return super.readFrom(type, genericType, annotations, mediaType, httpHeaders,
                entityStream);
    }
}