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Extension to Yoga for simplified JAX-RS integration

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package org.skyscreamer.yoga.resteasy.view;

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

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.MessageBodyWriter;

import org.skyscreamer.yoga.listener.RenderingListenerRegistry;
import org.skyscreamer.yoga.mapper.ResultTraverser;
import org.skyscreamer.yoga.selector.MapSelector;
import org.skyscreamer.yoga.selector.parser.SelectorParser;
import org.skyscreamer.yoga.view.AbstractYogaView;
import org.springframework.beans.factory.annotation.Autowired;

public abstract class AbstractSelectorMessageBodyWriter implements MessageBodyWriter
{
    @Autowired
    protected ResultTraverser _resultTraverser;

    @Autowired
    protected SelectorParser _selectorParser;

    @Autowired
    protected RenderingListenerRegistry _renderingListenerRegistry;

    @Autowired
    protected MapSelector _selector;
    
    @Context
    HttpServletRequest _request;

    @Context
    HttpServletResponse _response;

    @Override
    public long getSize( Object arg0, Class arg1, Type arg2, Annotation[] arg3, MediaType arg4 )
    {
        return -1;
    }

    @Override
    public boolean isWriteable( Class arg0, Type arg1, Annotation[] arg2, MediaType arg3 )
    {
        return true;
    }

    @Override
    public void writeTo( Object t, Class type, Type genericType, Annotation[] annotations,
            MediaType mediaType, MultivaluedMap httpHeaders,
            OutputStream entityStream ) throws IOException, WebApplicationException
    {
        try
        {
            AbstractYogaView view = getView();
            view.setResultTraverser( _resultTraverser );
            view.setSelectorParser( _selectorParser );
            view.setSelector( _selector );
            view.setRegistry( _renderingListenerRegistry );
            view.render( _request, _response, t, entityStream );
        }
        catch (RuntimeException e)
        {
            throw e;
        }
        catch (Exception e)
        {
            throw new WebApplicationException( e, Response.Status.BAD_REQUEST );
        }
    }

    protected abstract AbstractYogaView getView();
}
    

    

    

            

    

            



    
    






    
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