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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

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package com.sun.xml.internal.bind.v2.runtime;

import javax.activation.DataHandler;

import javax.xml.bind.annotation.XmlAttachmentRef;

import javax.xml.bind.annotation.adapters.XmlAdapter;

import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;

import javax.xml.bind.attachment.AttachmentMarshaller;

import javax.xml.bind.attachment.AttachmentUnmarshaller;

import com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingContext;

/**

 * {@link XmlAdapter} that binds the value as a SOAP attachment.

 *

 * <p>

 * On the user classes the SwA handling is done by using the {@link XmlAttachmentRef}

 * annotation, but internally we treat it as a {@link XmlJavaTypeAdapter} with this

 * adapter class. This is true with both XJC and the runtime.

 *

 * <p>

 * the model builder code and the code generator does the conversion and

 * shield the rest of the RI from this mess.

 * Also see @see <a href="http://webservices.xml.com/pub/a/ws/2003/09/16/wsbp.html?page=2">http://webservices.xml.com/pub/a/ws/2003/09/16/wsbp.html?page=2</a>.

 *

 * @author Kohsuke Kawaguchi

 */

public final class SwaRefAdapter extends XmlAdapter<String,DataHandler> {

    public SwaRefAdapter() {

    }

    public DataHandler unmarshal(String cid) {

        AttachmentUnmarshaller au = UnmarshallingContext.getInstance().parent.getAttachmentUnmarshaller();

        // TODO: error check

        return au.getAttachmentAsDataHandler(cid);

    }

    public String marshal(DataHandler data) {

        if(data==null)      return null;

        AttachmentMarshaller am = XMLSerializer.getInstance().attachmentMarshaller;

        // TODO: error check

        return am.addSwaRefAttachment(data);

    }

}