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package javax.xml.bind.attachment;

import javax.activation.DataHandler;

/**
 * 

Enables JAXB unmarshalling of a root document containing optimized binary data formats.

* *

This API enables an efficient cooperative processing of optimized * binary data formats between a JAXB 2.0 implementation and MIME-based package * processor (MTOM/XOP and WS-I AP 1.0). JAXB unmarshals the body of a package, delegating the * understanding of the packaging format being used to a MIME-based * package processor that implements this abstract class.

* *

This abstract class identifies if a package requires XOP processing, {@link #isXOPPackage()} and provides retrieval of binary content stored as attachments by content-id.

* *

Identifying the content-id, cid, to pass to getAttachment*(String cid)

* * * @author Marc Hadley * @author Kohsuke Kawaguchi * @author Joseph Fialli * * @since JAXB 2.0 * * @see javax.xml.bind.Unmarshaller#setAttachmentUnmarshaller(AttachmentUnmarshaller) * * @see XML-binary Optimized Packaging * @see WS-I Attachments Profile Version 1.0. * @see Describing Media Content of Binary Data in XML */ public abstract class AttachmentUnmarshaller { /** *

Lookup MIME content by content-id, cid, and return as a {@link DataHandler}.

* *

The returned DataHandler instance must be configured * to meet the following required mapping constaint. *

* * * * * * * * * * * * * * * * * * * * * * * * * * *
* Required Mappings between MIME and Java Types *
MIME TypeJava Type
DataHandler.getContentType()instanceof DataHandler.getContent()
image/gifjava.awt.Image
image/jpegjava.awt.Image
text/xml or application/xmljavax.xml.transform.Source
* Note that it is allowable to support additional mappings.

* * @param cid It is expected to be a valid lexical form of the XML Schema * xs:anyURI datatype. If {@link #isXOPPackage()} * ==true, it must be a valid URI per the cid: URI scheme (see RFC 2387) * * @return * a {@link DataHandler} that represents the MIME attachment. * * @throws IllegalArgumentException if the attachment for the given cid is not found. */ public abstract DataHandler getAttachmentAsDataHandler(String cid); /** *

Retrieve the attachment identified by content-id, cid, as a byte[]

. * * @param cid It is expected to be a valid lexical form of the XML Schema * xs:anyURI datatype. If {@link #isXOPPackage()} * ==true, it must be a valid URI per the cid: URI scheme (see RFC 2387) * * @return byte[] representation of attachment identified by cid. * * @throws IllegalArgumentException if the attachment for the given cid is not found. */ public abstract byte[] getAttachmentAsByteArray(String cid); /** *

Read-only property that returns true if JAXB unmarshaller needs to perform XOP processing.

* *

This method returns true when the constraints specified * in Identifying XOP Documents are met. * This value must not change during the unmarshalling process.

* * @return true when MIME context is a XOP Document. */ public boolean isXOPPackage() { return false; } }




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