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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;


XmlAdapter that binds the value as a SOAP attachment. 
 On the user classes the SwA handling is done by using the XmlAttachmentRef annotation, but internally we treat it as a XmlJavaTypeAdapter with this adapter class. This is true with both XJC and the runtime. 

the model builder code and the code generator does the conversion and
shield the rest of the RI from this mess.
Also see @see http://webservices.xml.com/pub/a/ws/2003/09/16/wsbp.html?page=2.
Author:
Kohsuke Kawaguchi/**
 * {@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);
    }
}