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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2012 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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package org.glassfish.jersey.message.internal;

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

import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
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.core.Response.Status;
import javax.ws.rs.ext.Providers;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.UnmarshalException;
import javax.xml.bind.Unmarshaller;
import javax.xml.parsers.SAXParserFactory;

import org.glassfish.jersey.internal.LocalizationMessages;

import org.glassfish.hk2.Factory;

/**
 * Base XML-based message body reader for JAXB beans.
 *
 * @author Paul Sandoz
 * @author Marek Potociar (marek.potociar at oracle.com)
 */
public abstract class XmlRootObjectJaxbProvider extends AbstractJaxbProvider {

    private final Factory spf;

    XmlRootObjectJaxbProvider(Factory spf, Providers ps) {
        super(ps);

        this.spf = spf;
    }

    XmlRootObjectJaxbProvider(Factory spf, Providers ps, MediaType mt) {
        super(ps, mt);

        this.spf = spf;
    }

    @Override
    protected JAXBContext getStoredJaxbContext(Class type) throws JAXBException {
        return null;
    }

    /**
     * Provider for un-marshalling entities of {@code application/xml} media type
     * into JAXB beans using {@link Unmarshaller JAXB unmarshaller}.
     */
    @Produces("application/xml")
    @Consumes("application/xml")
    public static final class App extends XmlRootObjectJaxbProvider {

        public App(@Context Factory spf, @Context Providers ps) {
            super(spf, ps, MediaType.APPLICATION_XML_TYPE);
        }
    }

    /**
     * Provider for un-marshalling entities of {@code text/xml} media type
     * into JAXB beans using {@link Unmarshaller JAXB unmarshaller}.
     */
    @Produces("text/xml")
    @Consumes("text/xml")
    public static final class Text extends XmlRootObjectJaxbProvider {

        public Text(@Context Factory spf, @Context Providers ps) {
            super(spf, ps, MediaType.TEXT_XML_TYPE);
        }
    }

    /**
     * Provider for un-marshalling entities of {@code /+xml} media types
     * into JAXB beans using {@link Unmarshaller JAXB unmarshaller}.
     */
    @Produces("*/*")
    @Consumes("*/*")
    public static final class General extends XmlRootObjectJaxbProvider {

        public General(@Context Factory spf, @Context Providers ps) {
            super(spf, ps);
        }

        @Override
        protected boolean isSupported(MediaType m) {
            return m.getSubtype().endsWith("+xml");
        }
    }

    @Override
    public boolean isReadable(Class type, Type genericType, Annotation annotations[], MediaType mediaType) {
        try {
            return Object.class == type && isSupported(mediaType) && getUnmarshaller(type, mediaType) != null;
        } catch (JAXBException cause) {
            throw new RuntimeException(LocalizationMessages.ERROR_UNMARSHALLING_JAXB(type), cause);
        }
    }

    @Override
    public Object readFrom(
            Class type,
            Type genericType,
            Annotation annotations[],
            MediaType mediaType,
            MultivaluedMap httpHeaders,
            InputStream entityStream) throws IOException {
        try {
            return getUnmarshaller(type, mediaType).
                    unmarshal(getSAXSource(spf.get(), entityStream));
        } catch (UnmarshalException ex) {
            throw new WebApplicationException(ex, Status.BAD_REQUEST);
        } catch (JAXBException ex) {
            throw new WebApplicationException(ex, Status.INTERNAL_SERVER_ERROR);
        }
    }

    @Override
    public boolean isWriteable(Class arg0, Type arg1, Annotation[] arg2, MediaType mediaType) {
        return false;
    }

    @Override
    public void writeTo(Object arg0, Class arg1, Type arg2, Annotation[] arg3,
            MediaType arg4, MultivaluedMap arg5, OutputStream arg6)
            throws IOException, WebApplicationException {
        throw new IllegalArgumentException();
    }
} 















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