# DefaultResponseReader.java

    /**
     *
     * Copyright 2009-2011 Rickard Öberg AB
     *
     * 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.
     */

    package org.qi4j.library.rest.client.responsereader;

    import java.io.IOException;
    import org.json.JSONException;
    import org.json.JSONTokener;
    import org.qi4j.library.rest.client.spi.ResponseReader;
    import org.restlet.Response;
    import org.restlet.data.MediaType;
    import org.restlet.resource.ResourceException;

    /**
     * ResponseReader for simple types from JSON
     */
    public class DefaultResponseReader
       implements ResponseReader
    {
        @Override
       public Object readResponse(Response response, Class<?> resultType) throws ResourceException
       {
          if (MediaType.APPLICATION_JSON.equals(response.getEntity().getMediaType()))
             if (resultType.equals(String.class))
             {
                try
                {
                   return response.getEntity().getText();
                } catch (IOException e)
                {
                   throw new ResourceException(e);
                }
             } else if (Number.class.isAssignableFrom(resultType))
             {
                try
                {
                   Number value = (Number) new JSONTokener(response.getEntityAsText()).nextValue();
                   if (resultType.equals(Integer.class))
                      return Integer.valueOf(value.intValue());
                } catch (JSONException e)
                {
                   throw new ResourceException(e);
                }
             }

          return null;
       }
    }