de.hoegertn.demo.cxfsimple.JacksonProvider.java Source code

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Here is the source code for de.hoegertn.demo.cxfsimple.JacksonProvider.java

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package de.hoegertn.demo.cxfsimple;

/*
 * #%L Daemon with Spring and CXF %% Copyright (C) 2013 Taimos GmbH %% 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. #L%
 */

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.type.TypeFactory;

/**
 * Copyright 2013 Taimos<br>
 * <br>
 * 
 * @author hoegertn
 * 
 */
@Provider
@Consumes(MediaType.WILDCARD)
@Produces(MediaType.WILDCARD)
public class JacksonProvider implements MessageBodyReader<Object>, MessageBodyWriter<Object> {

    private ObjectMapper mapper;

    public void setMapper(ObjectMapper mapper) {
        this.mapper = mapper;
    }

    @Override
    public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        if (mediaType.getSubtype().equals("json") || mediaType.getSubtype().endsWith("+json")) {
            return true;
        }
        return false;
    }

    @Override
    public long getSize(Object t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return -1;
    }

    @Override
    public void writeTo(Object t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
            MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream)
            throws IOException, WebApplicationException {
        entityStream.write(this.mapper.writeValueAsBytes(t));
    }

    @Override
    public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        if (mediaType.getSubtype().equals("json") || mediaType.getSubtype().endsWith("+json")) {
            return true;
        }
        return false;
    }

    @Override
    public Object readFrom(Class<Object> type, Type genericType, Annotation[] annotations, MediaType mediaType,
            MultivaluedMap<String, String> httpHeaders, InputStream entityStream)
            throws IOException, WebApplicationException {
        if (genericType.equals(null)) {
            return this.mapper.readValue(entityStream, type);
        }
        return this.mapper.readValue(entityStream, TypeFactory.defaultInstance().constructType(genericType));
    }

}