FormPropertiesReader.java

/*******************************************************************************
 * This file is part of OpenNMS(R).
 *
 * Copyright (C) 2008-2011 The OpenNMS Group, Inc.
 * OpenNMS(R) is Copyright (C) 1999-2011 The OpenNMS Group, Inc.
 *
 * OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
 *
 * OpenNMS(R) is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 *
 * OpenNMS(R) is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenNMS(R).  If not, see:
 *      http://www.gnu.org/licenses/
 *
 * For more information contact:
 *     OpenNMS(R) Licensing <license@opennms.org>
 *     http://www.opennms.org/
 *     http://www.opennms.com/
 *******************************************************************************/

package org.opennms.web.rest;

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

import javax.servlet.http.HttpServletRequest;
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.ext.MessageBodyReader;
import javax.ws.rs.ext.Provider;

@Provider
public class FormPropertiesReader implements MessageBodyReader<MultivaluedMapImpl> {	
    @Context private HttpServletRequest m_httpServletRequest;
    
    /** {@inheritDoc} */
    public boolean isReadable(final Class<?> type, final Type genericType, final Annotation[] annotations, final MediaType mediaTypes) {
        return type.isAssignableFrom(MultivaluedMapImpl.class);
    }

	
    /** {@inheritDoc} */
    public MultivaluedMapImpl readFrom(final Class<MultivaluedMapImpl> type, final Type genericType, final Annotation[] annotations, final MediaType mediaType,
            final MultivaluedMap<String, String> httpHeaders, final InputStream entityStream) throws IOException, WebApplicationException {
	    
        final MultivaluedMapImpl result = new MultivaluedMapImpl();
		
		@SuppressWarnings("unchecked")
		final Enumeration<String> en = m_httpServletRequest.getParameterNames();
		while(en.hasMoreElements()) {
		    final String parmName = en.nextElement();
		    final String[] parmValue = m_httpServletRequest.getParameterValues(parmName);
            result.put(parmName, parmValue);
		}
		
		return result;
	}

}