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package cz.xelfi.quoridor.webidor;

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.Provider;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;

import org.xml.sax.SAXException;

/**

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

@Provider

@Consumes(MediaType.TEXT_XML)

public class W3CDocumentReader implements javax.ws.rs.ext.MessageBodyReader<Document> {

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

        return type == Document.class;

    }

    public Document readFrom(Class<Document> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException, WebApplicationException {

        try {

            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

            DocumentBuilder builder = factory.newDocumentBuilder();

            return builder.parse(entityStream);

        } catch (ParserConfigurationException ex) {

            throw new WebApplicationException(ex);

        } catch (SAXException ex) {

            throw new WebApplicationException(ex);

        }

    }

}