XMLJAXBElementProvider.java

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package com.sun.jersey.core.impl.provider.entity;

import com.sun.jersey.core.provider.jaxb.AbstractJAXBElementProvider;
import com.sun.jersey.spi.inject.Injectable;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.charset.Charset;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.Providers;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.parsers.SAXParserFactory;

/**
 *
 * @author Paul.Sandoz@Sun.Com
 */
public class XMLJAXBElementProvider extends AbstractJAXBElementProvider {
    
    // Delay construction of factory
    private final Injectable<SAXParserFactory> spf;
    
    public XMLJAXBElementProvider(Injectable<SAXParserFactory> spf, Providers ps) {
        super(ps);

        this.spf = spf;
    }
    
    public XMLJAXBElementProvider(Injectable<SAXParserFactory> spf, Providers ps, MediaType mt) {
        super(ps, mt);        

        this.spf = spf;
    }
    
    @Produces("application/xml")
    @Consumes("application/xml")
    public static final class App extends XMLJAXBElementProvider {
        public App(@Context Injectable<SAXParserFactory> spf, @Context Providers ps) {
            super(spf, ps , MediaType.APPLICATION_XML_TYPE);
        }
    }
    
    @Produces("text/xml")
    @Consumes("text/xml")
    public static final class Text extends XMLJAXBElementProvider {
        public Text(@Context Injectable<SAXParserFactory> spf, @Context Providers ps) {
            super(spf, ps , MediaType.TEXT_XML_TYPE);
        }
    }
    
    @Produces("*/*")
    @Consumes("*/*")
    public static final class General extends XMLJAXBElementProvider {
        public General(@Context Injectable<SAXParserFactory> spf, @Context Providers ps) {
            super(spf, ps);
        }

        @Override
        protected boolean isSupported(MediaType m) {
            return m.getSubtype().endsWith("+xml");
        }
    }
    
    protected final JAXBElement<?> readFrom(Class<?> type, MediaType mediaType,
            Unmarshaller u, InputStream entityStream)
            throws JAXBException {
        return u.unmarshal(getSAXSource(spf.getValue(), entityStream), type);
    }

    protected final void writeTo(JAXBElement<?> t, MediaType mediaType, Charset c,
            Marshaller m, OutputStream entityStream)
            throws JAXBException {        
        m.marshal(t, entityStream);
    }
}