BankAccountReaderProvider.java

package org.javamoney.examples.jaxrs.infrastructure.bank;

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

import javax.ws.rs.Consumes;
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;

import org.apache.commons.io.IOUtils;
import org.javamoney.examples.jaxrs.model.BankAccount;

import com.google.gson.Gson;

@Provider
@Consumes(MediaType.APPLICATION_JSON)
public class BankAccountReaderProvider implements MessageBodyReader<BankAccount> {

	private Gson gson = new Gson();

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

		return BankAccount.class.isAssignableFrom(type); 
	}

	@Override
	public BankAccount readFrom(Class<BankAccount> type, Type genericType,
			Annotation[] annotations, MediaType mediaType,
			MultivaluedMap<String, String> httpHeaders, InputStream entityStream)
			throws IOException, WebApplicationException {
		
		String json = IOUtils.toString(entityStream);
		return gson.fromJson(json, BankAccountJS.class).to();
	}

}