The AttachmentMarshaller.java Java example source code
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package javax.xml.bind.attachment;
import javax.activation.DataHandler;
import javax.xml.bind.Marshaller;
/**
* <p>Enable JAXB marshalling to optimize storage of binary data.
*
* <p>This API enables an efficient cooperative creation of optimized
* binary data formats between a JAXB marshalling process and a MIME-based package
* processor. A JAXB implementation marshals the root body of a MIME-based package,
* delegating the creation of referenceable MIME parts to
* the MIME-based package processor that implements this abstraction.</p>
*
* <p>XOP processing is enabled when {@link #isXOPPackage()} is true.
* See {@link #addMtomAttachment(DataHandler, String, String)} for details.
* </p>
*
* <p>WS-I Attachment Profile 1.0 is supported by
* {@link #addSwaRefAttachment(DataHandler)} being called by the
* marshaller for each JAXB property related to
* {http://ws-i.org/profiles/basic/1.1/xsd}swaRef.</p>
*
*
* @author Marc Hadley
* @author Kohsuke Kawaguchi
* @author Joseph Fialli
* @since JAXB 2.0
*
* @see Marshaller#setAttachmentMarshaller(AttachmentMarshaller)
*
* @see <a href="http://www.w3.org/TR/2005/REC-xop10-20050125/">XML-binary Optimized Packaging
* @see <a href="http://www.ws-i.org/Profiles/AttachmentsProfile-1.0-2004-08-24.html">WS-I Attachments Profile Version 1.0.
*/
public abstract class AttachmentMarshaller {
/**
* <p>Consider MIME content data for optimized binary storage as an attachment.
*
* <p>
* This method is called by JAXB marshal process when {@link #isXOPPackage()} is
* <code>true, for each element whose datatype is "base64Binary", as described in
* Step 3 in
* <a href="http://www.w3.org/TR/2005/REC-xop10-20050125/#creating_xop_packages">Creating XOP Packages.
*
* <p>
* The method implementor determines whether <code>data shall be attached separately
* or inlined as base64Binary data. If the implementation chooses to optimize the storage
* of the binary data as a MIME part, it is responsible for attaching <code>data to the
* MIME-based package, and then assigning an unique content-id, cid, that identifies
* the MIME part within the MIME message. This method returns the cid,
* which enables the JAXB marshaller to marshal a XOP element that refers to that cid in place
* of marshalling the binary data. When the method returns null, the JAXB marshaller
* inlines <code>data as base64binary data.
*
* <p>
* The caller of this method is required to meet the following constraint.
* If the element infoset item containing <code>data has the attribute
* <code>xmime:contentType or if the JAXB property/field representing
* <code>datais annotated with a known MIME type,
* <code>data.getContentType() should be set to that MIME type.
*
* <p>
* The <code>elementNamespace and elementLocalName
* parameters provide the
* context that contains the binary data. This information could
* be used by the MIME-based package processor to determine if the
* binary data should be inlined or optimized as an attachment.
*
* @param data
* represents the data to be attached. Must be non-null.
* @param elementNamespace
* the namespace URI of the element that encloses the base64Binary data.
* Can be empty but never null.
* @param elementLocalName
* The local name of the element. Always a non-null valid string.
*
* @return
* a valid content-id URI (see <a href="http://www.w3.org/TR/xop10/#RFC2387">RFC 2387) that identifies the attachment containing data.
* Otherwise, null if the attachment was not added and should instead be inlined in the message.
*
* @see <a href="http://www.w3.org/TR/2005/REC-xop10-20050125/">XML-binary Optimized Packaging
* @see <a href="http://www.w3.org/TR/xml-media-types/">Describing Media Content of Binary Data in XML
*/
public abstract String addMtomAttachment(DataHandler data, String elementNamespace, String elementLocalName);
/**
* <p>Consider binary data for optimized binary storage as an attachment.
*
* <p>Since content type is not known, the attachment's MIME content type must be set to "application/octet-stream".
*
* <p>
* The <code>elementNamespace and elementLocalName
* parameters provide the
* context that contains the binary data. This information could
* be used by the MIME-based package processor to determine if the
* binary data should be inlined or optimized as an attachment.
*
* @param data
* represents the data to be attached. Must be non-null. The actual data region is
* specified by <tt>(data,offset,length) tuple.
*
* @param offset
* The offset within the array of the first byte to be read;
* must be non-negative and no larger than array.length
*
* @param length
* The number of bytes to be read from the given array;
* must be non-negative and no larger than array.length
*
* @param mimeType
* If the data has an associated MIME type known to JAXB, that is passed
* as this parameter. If none is known, "application/octet-stream".
* This parameter may never be null.
*
* @param elementNamespace
* the namespace URI of the element that encloses the base64Binary data.
* Can be empty but never null.
*
* @param elementLocalName
* The local name of the element. Always a non-null valid string.
*
* @return content-id URI, cid, to the attachment containing
* <code>data or null if data should be inlined.
*
* @see #addMtomAttachment(DataHandler, String, String)
*/
public abstract String addMtomAttachment(byte[] data, int offset, int length, String mimeType, String elementNamespace, String elementLocalName);
/**
* <p>Read-only property that returns true if JAXB marshaller should enable XOP creation.
*
* <p>This value must not change during the marshalling process. When this
* value is true, the <code>addMtomAttachment(...) method
* is invoked when the appropriate binary datatypes are encountered by
* the marshal process.</p>
*
* <p>Marshaller.marshal() must throw IllegalStateException if this value is true
* and the XML content to be marshalled violates Step 1 in
* <a href="http://www.w3.org/TR/2005/REC-xop10-20050125/#creating_xop_packages">Creating XOP Pacakges
* http://www.w3.org/TR/2005/REC-xop10-20050125/#creating_xop_packages.
* <i>"Ensure the Original XML Infoset contains no element information item with a
* [namespace name] of "http://www.w3.org/2004/08/xop/include" and a [local name] of Include"</i>
*
* <p>When this method returns true and during the marshal process
* at least one call to <code>addMtomAttachment(...) returns
* a content-id, the MIME-based package processor must label the
* root part with the application/xop+xml media type as described in
* Step 5 of
* <a href="http://www.w3.org/TR/2005/REC-xop10-20050125/#creating_xop_packages">Creating XOP Pacakges.
*
* @return true when MIME context is a XOP Package.
*/
public boolean isXOPPackage() { return false; }
/**
* <p>Add MIME data as an attachment and return attachment's content-id, cid.
*
* <p>
* This method is called by JAXB marshal process for each element/attribute typed as
* {http://ws-i.org/profiles/basic/1.1/xsd}swaRef. The MIME-based package processor
* implementing this method is responsible for attaching the specified data to a
* MIME attachment, and generating a content-id, cid, that uniquely identifies the attachment
* within the MIME-based package.
*
* <p>Caller inserts the returned content-id, cid, into the XML content being marshalled.
*
* @param data
* represents the data to be attached. Must be non-null.
* @return
* must be a valid URI used as cid. Must satisfy Conformance Requirement R2928 from
* <a href="http://www.ws-i.org/Profiles/AttachmentsProfile-1.0-2004-08-24.html#Referencing_Attachments_from_the_SOAP_Envelope">WS-I Attachments Profile Version 1.0.
*/
public abstract String addSwaRefAttachment(DataHandler data);
}
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