com.fb.resttest.AuthorListReader.java Source code

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Here is the source code for com.fb.resttest.AuthorListReader.java

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package com.fb.resttest;

import com.google.gson.Gson;
import com.google.gson.stream.JsonReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.List;
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.Provider;

/**
 *
 * @author Francesco
 */
@Provider
@Produces(MediaType.APPLICATION_JSON)
public class AuthorListReader implements MessageBodyReader<List<Author>> {

    @Override
    public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return true;
    }

    @Override
    public List<Author> readFrom(Class<List<Author>> type, Type genericType, Annotation[] annotations,
            MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream)
            throws IOException, WebApplicationException {
        final Author[] authors = new Gson().fromJson(new JsonReader(new InputStreamReader(entityStream)),
                Author[].class);
        return Arrays.asList(authors);
    }

}