org.apache.wink.server.internal.handlers.PopulateResponseStatusHandler Maven / Gradle / Ivy

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package org.apache.wink.server.internal.handlers;

import javax.servlet.http.HttpServletResponse;
import javax.ws.rs.core.GenericEntity;
import javax.ws.rs.core.Response;

import org.apache.wink.server.handlers.AbstractHandler;
import org.apache.wink.server.handlers.MessageContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class PopulateResponseStatusHandler extends AbstractHandler {

    private static final Logger logger =
                                           LoggerFactory
                                               .getLogger(PopulateResponseStatusHandler.class);

    public void handleResponse(MessageContext context) throws Throwable {
        Object entity = context.getResponseEntity();

        int status = -1;

        if (entity instanceof Response) {
            Response response = (Response)entity;
            status = response.getStatus();
            entity = response.getEntity();
        }

        if (entity instanceof GenericEntity) {
            GenericEntity genericEntity = (GenericEntity)entity;
            entity = genericEntity.getEntity();
        }

        if (status == -1) {
            if (entity == null) {
                logger
                    .trace("No status set and no entity so setting response status to 204 No Content"); //$NON-NLS-1$
                status = HttpServletResponse.SC_NO_CONTENT;
            } else {
                logger.trace("No status set so setting response status to 200 OK"); //$NON-NLS-1$
                status = HttpServletResponse.SC_OK;
            }
        }

        context.setResponseStatusCode(status);
    }

}